NL7908278A - PROCESS FOR THE MANUFACTURE OF A DIMETHYL ETHER PREPARATION FOR SAFE TRANSPORTATION AND THE USE THEREOF AS FLUID SUBSTANCE FILLING AND AEROSOL BUSHES. - Google Patents

Description

-1- 21013 / CV / ts

Applicant: Hans Schwarzkopf GmbH in Hamburg, Federal Republic of Germany.

Short designation: Method for the manufacture of a safe transportable dimethyl ether preparation and its use .. as propellant filling and aerosol cans.

5

The invention relates to a method for the manufacture of a safely transportable dimethyl ether preparation and the use thereof as a propellant filling in aerosol cans.

As is known, dimethyl ether boils at -25 ° C and forms an ethereally-smelling, colorless gas hazardous to vapors, of which 37 liters of gaseous dimethyl ether dissolve in 1 liter of water at 18 ° C. It is also known that strict legal regulations must be taken into account in the transport, storage and handling of dimethyl ether.

The object of the invention is to provide 1. A process for the manufacture of a safely transportable dimethyl ether preparation.

2. The dimethyl ether preparation obtained by the process must be suitable as a carrier mixture and propellant for the manufacture of aerosol preparations.

3. In the manufacture and use of the dimethyl ether preparation in pressurized containers, it must be present as a stable homogeneous solution, ie as a single-phase system, so that the spray always releases in the same composition during use. .

4. In the dimethyl ether preparation, the highest possible proportion of non-flammable components must be present, so that transport, storage and use can take place as far as possible free of risk of accidents and without damage to the environment.

5. When using the dimethyl ether preparation for formulating aerosol preparations, they must be free from chlorofluorinated hydrocarbons and hydrocarbon propellants.

6. The drying times and the spraying behavior for aerosol preparations manufactured using the dimethyl ether preparation must, at least using a specially adapted pressure valve, correspond to a great extent to the behavior that consumers have become accustomed to using known aerosol preparations on the 35 based on the fluorochlorocarbon propellants.

7 · The dimethyl ether preparation must not give a flame jet in the usual methods of flame jet measurement and not more than 45 wt. % of flammable components.

7908278 -2-21013 / GV / ts * 1 1 »

In Japanese Patent Application Laid-open No. Shü 46-28440, a single-phase aerosol composition of (a) contains 1 to 5 wt. % pesticides for harmful organisms (b) 0 to 20 wt. % of short chain alcohol, with two to three carbon atoms, ethylene glycol monoalkyl-5 ether with 1 to 4 carbon atoms in the alkyl radical or diethylene glycol monoalkyl ether with 1 to 4 carbon atoms in the alkyl radical (c) 1.5 to 15 wt. % polyoxyethylene alkylaryl ether with 8 to 18 polyoxyethylene residues or polyoxyethylene higher alcohol ethers with 6-15 polyoxyethylene residues, (d) 20 to 50 wt. % water and (e) 20 to 50 wt. % dimethyl ether described. The drying times of the sprayed aerosol are very high compared to the drying times of comparable aerosols based on fluorocarbons as propellants. Japanese Patent Application No. Sho 47-22599 discloses an aerosol of a shaping dispersion for hair treatment which contains a mixture which for the aqueous dispersion of a corresponding amount of a shaping agent by dispersing organic amine, wetting agents, thioreum or urea and perfume in the aqueous solution of a cationic resin, 20 to 50 wt. % of dimethyl ether, based on the dispersion, as an addition, is filled in the spray can and closed. The drawback of this aero-20 sol preparation is that it is a dispersion and not a clear solution. In the above Japanese patent applications, the dimethyl ether is pressed as such into the aerosol cans. Dimethyl ether water mixtures are not described or indicated there.

The object of the invention is a method for manufacturing a safely transportable dimethyl ether preparation, characterized in that (a) the dimethyl ether is mixed with water under pressure to form a homogeneous solution, or b) the dimethyl ether with methylene chloride and / or 1,1,1-trichloroethane is mixed under pressure until a homogeneous solution and a mixture of a) or b) or both mixtures a) and b) are used as propellant for the production of carrier mixtures in aerosol preparations.

A further embodiment of the method according to a) is characterized in that about 6.0 to about 32.0 wt. % dimethyl ether and about 68.0 to about 94 wt. % water, the wt.

35% of both components together up to 100 wt. % must complete.

A special embodiment of the process according to a) is characterized in that about 27.0 to about 32.0 wt.% Dimethyl ether and about 68.0 to about 73.0 wt. % water are used, with the 79 0 8 2 7-8. * -3- 21013 / CV / ts wt. % of the two components together up to 100 wt. % must complete.

A further embodiment of the method according to a) or b) is characterized in that the mixture a) or b) in the absence of up to about 11 wt. % ethanol and / or n-propanol and / or iso-propanol is produced, with the specification of the wt. % refers to the weight of the mixture a) or the mixture b).

A further special embodiment of the method according to a) is characterized in that about 10.0 to about 40.0 wt. % dimethyl ether, about 15.0 to about 5.0 wt. ethyl alcohol and / or iso-propanol and / or n-propanol and about 85.0 to about 45.0 wt. % water are used, the wt. % of the components must complement each other up to 100 wt. %.

A further special embodiment of the method according to b) is characterized in that about 10.0 to about 40.0 wt. % dimethyl ether, about 15.0 to about 5.0 wt. % ethyl alcohol and / or iso-propanol and / or n-propanol and about 85.0 to about 45.0 wt. % methylene chloride and / or 1,1,1-trichloroethane are used, the weight percent of the components having to complement each other to 100 wt. ?.

The subject of the invention also includes the use of 20th dimethyl ether mixtures obtainable by the process of the invention as propellant in pressurized carrier mixtures for aerosol preparations or in aerosol preparations.

In a first special application, one of the mixtures or several of the mixtures must therefore produce aerosol preparations which, as pressurized aerosol preparations, which are for example sprayable as a cosmetic, space or medicinal spray, mixtures of propellants and organic solvents as propellants. Solvents for the active substances are formulated, are present, the mixture being present as a homogeneous solution and at least 50 wt. %, preferably at least 55 wt. % of non-flammable components, based on the total weight of the mixture, and contains as propellant carbon dioxide and dimethyl ether and as non-flammable components at least water, carbon dioxide, methylene chloride and / or 1,1,1-trichloroethane.

In a further special application, one of the mixtures serves to produce carrier mixtures for aerosol preparations and aerosol preparations therefrom, which as a pressurized carrier mixture for aerosol preparations has a self-propelled spray system for use as a universal spray on the basis of active substances to be dispensed, organic solvents, water with propellants 7908278 V-4-21013 / CV / ts are present in a spray container and the carrier mixture is present as a homogeneous solution and these 70.0 - 50.1 wt. % water, 38.5-28.7 wt. % dimethyl ether, 0.5-10.0 wt. % iso-propanol and / or ethanol and / or n-propanol and 3.4-0.8 wt. % carbon dioxide, the indicated wt. % must complement each other up to 100 wt. %.

The mixtures obtainable according to the process of the invention a) or b) 10 are advantageously already made by the manufacture of the dimethyl ethers by adding water and optionally ethanol and / or isopropanol and / or n-propanol. dimethyl ether, or, if appropriate, ethanol and / or isopropanol and / or n-propanol added to the dimethyl ether by adding methylene chloride and / or trichloroethane. The transport and storage of such dimethyl ether mixtures is considerably safer, as a result of which considerable technical simplifications are permissible for the transport and the storage device and at the manufacturer of the aerosol preparations, so that the mixtures manufactured according to the invention give considerable technical advances in different directions.

The dimethyl ether mixtures produced according to the method of the invention can be processed into carrier mixtures for aerosol preparations of the most various kinds, whereby additional propellant, for example carbon dioxide, can optionally also be used. Insofar as the aerosol preparations produced therewith must be present in the form of a wet spray, the usual aerosol spray valves can be used.

If, however, the drying times and the spraying behavior for aerosol preparations manufactured using the dimethyl ether preparations obtainable according to the present process must correspond to those of the known aerosol preparations on the basis of fluorochloro-hydrocarbon propellants, it is expedient to use a specially adapted apply a pressure valve.

The invention relates to the use of the homogeneous solution manufactured according to one of the above embodiments of the method as a propellant filling in aerosol cans, which are present as a medicinal, cosmetic or space spray, which fine spraying valve with a self-closing gas nozzle and / or liquid-containing solutions containing pressure container provided with a valve shaft which is axially movable within a valve housing in the opening direction against the action of a closing compression spring, which is supported via the valve housing, whereby in the clay shaft an axial outlet channel is connected to the interior of the pressurized container by means of a radial outlet channel, which opens into an annular groove in the valve shaft, the radial outlet channel of which is closed by an elastic annular sealing disc is closed, of which the cylindrical birch circumference i with radial pretension g engages in the annular groove and the outer edge of which is not clamped between the valve body and the coupling head, 10 wherein in the closed position the shoulder of the annular groove facing the holder rests on the sealing disc under the action of the closing compression spring, while the one of the annular groove in the valve shaft on the circumferential part of the hole in the sealing disc lying above the neutral bending zone, forces acting in a radial and axis-parallel force component, which are largest at the top edge and when the valve is closed, disintegrate with respect to the valve shaft The forces acting by the annular groove in the valve shaft on the circumferential part of the hole in the sealing disc lying below the neutral bending zone also disintegrate in a radial and axially parallel force component with respect to the valve shaft, these force components on the lower edge. of the sealing disc hole are the largest, though ke is adapted to the special purpose due to the combination of the versions a, b, c, d, e and f, so that a}. A throttling body, which is designed as a cylindrical pierced body, is pressed into the axial outlet channel of the valve shaft section and a bridge section with the passage opening in the center of the throttling body is arranged in the center of the throttling body, b). The vortex nozzle with built-in vortex nozzle is fixed, but is detachably mounted and the nozzle has a cylindrical nozzle receiving tap, which comprises two axially parallel planes, which are arranged perpendicularly viewed from the nozzle opening c). The nozzle receiving tap pressed up carries the vortex nozzle, four of which are provided on the end face of the nozzle receiving tap d). The four ridges on the nozzle opening on the inside of the swirl nozzle form an approximately cylindrical swirl chamber and the ridges release the entry channels tangentially to the circular nozzle opening, 7908278> - -6-21013 / CV / t / e). A cylindrical recess is provided on the outer surface of the swirl nozzle concentrically to the nozzle opening, f). The vortex spray head comprises an approximately eccentrically arranged narrowing joint which communicates with the annular channel 5 and passes below the receiving opening for receiving the valve shaft portion.

*

The invention will be explained in more detail below with reference to some exemplary embodiments shown in the accompanying figures.

Fig. 1 shows a section over a spray valve in closed position.

FIG. 2 shows the spray valve shown in FIG. 1 in open position.

Fig. 3 shows a further embodiment of a spray valve in longitudinal section, wherein the spray valve is shown in the left part in the open position and in the right part in the closed position.

Fig. 4 is a sectional view of a throttle body.

FIG. 5 is a sectional view of a vortex nozzle.

Fig. 6 is a sectional view of the vortex spray head healed in FIG. 5, taken along line A-B.

Fig. 7 shows a cross section through the nozzle receiving tap of the vortex nozzle with inserted nozzle.

FIG. 8 shows a view of the inner bottom of the insert nozzle.

Fig. 9 is a vertical sectional view of the nozzle partially shown in FIG. 8.

. Fig. 10 shows a further embodiment of a spray valve in longitudinal section.

FIG. 11 shows part of FIG. 10 on a larger scale.

Fig. 12 shows a modified embodiment of the construction shown in FIGS. 10 and 11.

Fig. 13 shows an aerosol spray can in longitudinal section provided with a spray valve of the kind shown in FIGS. 1-12 and filled with an aerosol preparation.

Figures 1 and 2 show a self-closing spray valve for a gas-liquid solution, for instance a liquefied propellant-containing aerosol preparation containing a pressurized container, not shown in more detail, which spray valve at least substantially consists of a housing 1, a valve shaft 2, a elastic sealing disc 3 and a closing spring 4 exist. The valve shaft 2 is movable in the opening direction against the action of the closing compression spring 4 and the elasticity of the sealing disc. The hole edge of the sealing disc 3 is inserted with radial pretension in a 79 0 8 2 7 ff-7-21013CV / ts annular groove 5 of the valve shaft, the largest width of which is approximately one third larger than the thickness of the sealing disc.

In the closed position of the valve shown in Fig. 1, the peripheral parts of the hole in the sealing disc 3 of the hole in the sealing disc 3, which lie from the annular groove 5 in the valve shaft 2 on the above and below the neutral bending zone, are simultaneously acting in a force relative to the valve shaft 2 counts approximately radial and approximately axially parallel force component decomposed. Due to the profile shape of the annular groove, the two force components at the top and bottom hole edges are IQ. size of the sealing disc. In the exemplary embodiment in Figs. 1 and 2, this is achieved by an approximately arcuately circular annular groove in transverse profile. Furthermore, the profile of the annular groove can, however, also have the form of a chain line or a parabola or the like, or it can also be V-shaped. It is only important that, in the vicinity of the holder: - or the hole edge turned away in the sealing disc, a particularly high specific flat pressure is present, so that a particularly good sealing effect is achieved on both the upper and the lower inner edge. reached. Depending on the radial bias and the type of material for the sealing disc, the formation of an annular space 6 between the bottom of the annular groove 5 and the cylindrical inner surface of the hole in the sealing disc is possible. Even when using a particularly elastic material for the sealing disc; that the groove completely fills up. however, the objective of an increased specific surface pressure at both the upper and the lower hole edge is achieved by the decomposition of the annular groove according to the invention.

The annular groove / d at least overlaps a radial outlet channel 7} which flows in the flow direction of the solution of gas and liquid into an axial outlet channel 8 of the valve shaft 2, which starts in the vicinity of the radial outlet channel 7 and only to the the outer end is open.

On the valve shaft portion 9 enclosing the axial outlet channel 8, a plastic vortex spray head 10 with an inserted vortex nozzle 37 is fixed but detachably mounted. The vortex spray head 10 stands - as can be seen in particular from Figs. 5-9, from a spray head 12 (without nozzle) with a cylindrical nozzle receiving tap 13, which comprises two axially parallel surfaces 3¾ which are arranged perpendicularly viewed from the nozzle opening 36. . The nozzle receiving tap 13 carries 7908278g. 21013 '/ CV / ts presses the swirl nozzle 37 from which four ridges 38 lie on the end face 39 of the nozzle receiving tap 13. Around the nozzle opening 36 on the inside of the swirl nozzle 37, the four ridges 38 form an approximately cylindrical swirl chamber 44. The ridges 38 mutually release the entry channels 40, which are tangential to the circular nozzle opening 36. The ridges 38 have a cylindrical exterior, which is interrupted by entry channels 40. A cylindrical recess 41 is provided on the outer surface of the swirl nozzle 37 concentrically with the nozzle opening 36.

The vortex nozzle 10 comprises an approximately eccentrically arranged constricting chamber 11 which communicates with the annular channel 42 and passes below the receiving opening 43 for receiving the valve shaft portion 9. In the axial outlet channel 8 of the valve shaft portion 9, a throttling body 32, which is particularly clearly shown in Fig. 4, is pressed in and which is designed as a pierced cylindrical body. The centrally arranged throttling channel 33 is arranged in a bridge section 31 lying in the middle of the throttling body 32. The passage opening 27 is about 2.0 to 3.0 ram, preferably 2.5 mm. The diameter of the radial outlet channel 7 in the valve stem 2 may be about 0.2 to 0.3 mm, preferably 0.25 mm. The throttle channel 33 in the bridge section 31 has a spring: diameter (1 / d) ratio of 1.0 to 3.0, the diameter being on the order of radial outlet channel 7. The height of the bridge portion 31 is approximately 1/10 of the length of the throttle body 32, the diameter of the inlet and outlet openings of the throttle body 32 being 0.5 mm to 1.0 mm, preferably 0.8 mm. The passage channel 45 between the nozzle receiving tap 13 and the swirl nozzle 37, which is formed by the surfaces 35 on the nozzle receiving tap 13 and the inner wall of the swirl nozzle 37, has a width of 0.15 to 0 at the maxi11® * ® position. 25 mm, preferably 0.20 mm. The length of this passage channel 45 is approximately 3.5 mm. The front annular channel 47 on the end face 39 of the nozzle receiving tap 13 has an outer diameter of about 4 mm, an inner diameter formed by the cylindrical contour of the ridges 38. This internal diameter is 2 to 3 mm and the front ring channel 47 has a channel height equal to the back height, from 0.2 to 0.3 mm, preferably 0.25 mm. The entry channels 40 are 0.15 to 0.30 mm wide and have the height of the ridges 38. The whirl chamber 44 has an approximately cylindrical diameter of 7908278 "9-21013 / CV / ts" <0.70 to 1.30 mm , preferably 0.90 mm. The height of the swirl chamber 44 is equal to the height of the ridges 38. The nozzle opening 36 has a length: diameter (1 / d) ratio of 0.3 to 1.0, preferably about 0.5, the diameter 0.3 to 0.6, preferably 0.5 mm. The cylindrical recess 41 has a diameter of about 1 mm and a depth of 0.2 mm. The outer valve shaft portion 9 surrounding the axial outlet channel 8 protrudes through a center opening 14 in the dome 15 of a lid 16 of the container. The valve housing 1 is placed in the dome, the central opening 14 of which in the dome faces the outer beveled outer surface of the outer edge of the sealing disc facing the inner side of the dome by depressing the cylindrical part of the dome. dome under a section 17 of the valve body widened in diameter and tightly clamped.

On the side of the annular surface 18 facing the holder, a diameter of the inner guide shaft section 22 greatly reduced in diameter is guided axially displaceably on guide claws 23 arranged inside the valve housing 1. The guide claws are connected to the inner wall and the bottom of the valve body 1 and are designed as relatively narrow ribs. They enclose gaps between them which form connecting channels 24 between the interior of the container and the valve body.

The two ends of the closing compression spring surrounding the guide shaft portion 22 are supported on the end faces of the annular face 18 on the annular shoulder 25 and against the end faces 26 of the valve housing 23 facing the said facing faces. The inner guide shaft 22 of the valve cone is in the vicinity of the outer end of the closing compression spring 4 lying against the ring shoulder 25 of a small length in diameter approximately adapted to the inner diameter of the closing compression spring, the outer diameter of which corresponds approximately to that of the outer valve shaft section 9 The main part of the inner valve shaft part 22 is smaller than the inner diameter 30 of the closing compression spring 4 in order to avoid friction between the parts moving relative to each other. The guide claws 23 also expediently have in the vicinity of their end side 26 facing the closing compression spring the inner end of the closing compression spring surrounding not externally shown attachments, so that the end of the spring is fixed.

The valve housing 1 is provided in the bottom with a passage opening 27 which opens into an extension 28 directed in the holder for a dip tube 29 slid on it. The extension 28 can be provided with a tooth-shaped annular collar 30, through which a locking connection between the dip tube and the extension 28 is achieved.

The embodiment shown in Fig. 3 is characterized in that • the top edge of the valve housing 1 is designed to slope upwards from the outside. The center opening 14 in the dome of the tray has a beaded inner roll 34. The outer valve shaft portion 2 is smaller in diameter with respect to the valve shaft.

. The embodiments shown in Figures 10, 11 and 12 differ from the embodiment shown in Figures 1 and 2 in that the bottom 5a of the annular groove 5 in the valve shaft 2 with the holder facing away from the groove, the upper side of the valve shaft approximately normal side wall 5b of the groove encloses an approximately right angle. On the side facing the container, the bottom 5a extends radially downwards and outwards in the manner of a cone. The groove-profile according to Fig. 11 and Fig. 12 shows that the bottom is approximately cylindrical at the top third of the groove width and is then designed in an arc-shaped manner downwards. Instead of an accurately circular arc-shaped line, the groove can also run downwards in the form of another arc-shaped line. It is important that in the vicinity of the hole edge 3a facing the colder in the elastic sealing disc 3 a particularly high specific surface pressure is achieved in order to achieve a high sealing effect.

In the embodiment according to Fig. 11 it is expedient to insert the radial passage channel 7 in the valve shaft 2 also into the part of the annular groove exposed to the axial and radial force components. Accordingly, the distance between the soul of the passage channel 7 and the imperfect cutting line between the arcuate flared groove and the cylindrical lateral surface of the underlying portion of the valve shaft 2 is approximately 1/5 of the total width 30 of the groove between the cutting line 5c and the upper axial transverse shoulder 5b. In this way, the radial pretension under which the sealing disc engages in the groove is joined by the radial and axial force components, which are generated in the sense of an increased surface pressure in the vicinity of the radial passage channel 7 by the closing force of the compression spring 4.

In the embodiment according to Fig. 12, the valve shaft 2 also has at least a radially projecting surface 46 directly above its annular groove 46 for precise determination of its closing position, even with swollen sealing disc 3, which abuts against the inside of the valve 7908278 11 "210'3 / CV / ts" house 1 enclosing dome 15 of a holding lid 16. In this case, it may be advisable to place the radial passage channel 7 slightly higher, since the sealing disc 3, due to the always accurately determined closing position, with its upper hole edge lies in the vicinity of the upper axial transverse shoulder 5b. In order to ensure the accurately flat position of the sealing disc also in the vicinity of its hole edge i, the edge 15a of the dome 15 of the container cover 16 delimiting the opening 14 for the valve shaft 2 is over the height of the radial attachment piece forming the stop surface 34 the valve cone is pressed upwards during the manufacture of the container lid.

In use, the world nozzle 10 is pressed down. The radial outlet channel 7, which is closed in the rest position by the elastic sealing disc 3, is herein moved downwards and connected to the free annular space. Simultaneously, the closing compression spring is compressed and tensioned. The medium to be sprayed is pressed by the internal pressure in the can through the dip tube 29, the passage opening 27, and the connecting channels 24 into the free annular space 20 and flows through the radial outlet channel 7. The expansion, in the axial outlet channel 8 of the valve cap 2 processes vaporization, whereby the one-phase mixture turns into a two-phase mixture. As the flow continues through the throttling body 32, in particular through the throttling channel 33, the mixture is compressed and accelerated, thereby refining the droplet size of the mixture upon expansion behind the throttling body and into the chamber space 11. The already drop-shaped prepared mixture flows from the chamber 11 into the annular channel 42, there it is divided into two streams axially with respect to the nozzle receiving pin 13, which passes through the passage channels 45, through the front ring channel to the inlet channels. The four entry channels 40 again act as throttle members and simultaneously effect a rotary shape of the mixture flow into the swirl chamber.

Both the expansion in the swirl chamber and the diffusion effect of the entry channels 40 reduce the droplet size of the two-phase mixture again. The nozzle opening 36 performs a one-time throttling with subsequent expansion. The rotation of the flow in the whirl chamber continues as it exits the nozzle orifice 36 and additionally effects distribution of the droplets of the two-phase mixture after leaving the orifice. The determining factor for the shape of the spray jet is the length: diameter (1 / d) - 7908278

* * I

12 -12- 21013 / CV / ts ratio of the nozzle opening 36 and the geometry of the cylindrical recess 41 lying before it.

The first special use of one of the mixtures or several of the mixtures, which contain methylene chloride 5 and / or 1,1,1-trichloroethane and dimethyl ether, which are obtained according to the process of the invention, is now briefly indicated, for the production of aero sol preparations described in more detail.

As organic solvents for the propellants to form the propellant and as a solvent for the active substances, acetone, ethyl methyl ketone, diethyl ether, dimethoxymethane, diethyl carbonate, ethyl alcohol, n-propanol, isopropanol, methyl acetate, ethyl acetate, methoxyacetone hydroxyacetone, methyl isopropalketone, diethyl ketone, diisopropyl ketone, dipropyl ketone, diacetone alcohol, dichloroethylene, ethyl chloride, 1,1-dichloroethane, 1-chlorobutane, individually or in mixtures.

For the purposes of the present application, non-flammable constituents are understood to be water, carbon dioxide, methylene chloride and / or 1,1,1-trichloroethane and the like other constituents, for example active substances, which have an ignition temperature above 600 ° C.

The preparations according to the invention can be filtrated with cosmetic, hygienic or medicinal active ingredients (active / liquid) and give preparations for various purposes, for example as a cosmetic, space or medicinal spray.

As active ingredients, for example, substances for the maintenance of the hair, hair spray resin, antiperspirant agents, deodorants, bactericidal agents, perfumes, fungicides, plant and / or organ extracts are included.

The propellant system used in the formulations of the compositions of the invention is based on the propellants carbon dioxide and dimethyl ether and organic solvents as propellant. The propellant system includes 30% propellant soluble materials methylene chloride and / or 1,1,1-trichloroethane and water.

An exemplary embodiment of the aerosol preparation is characterized in that the propellant gas contains 4-6 wt. % carbon dioxide and 6-10 wt. % dimethyl ether, the wt. % are based on the total weight of the components filled in.

Another embodiment of the aerosol preparation is characterized in that it contains 12.9 to 18 wt. % water, the wt.

*% based on the total weight of the filled in ingredients.

7908278 -13- 21013 / CV / ts

A further embodiment of the aerosol preparation is characterized in that it contains 32 to 35 wt. % of methylene chloride and / or 1,1,1-trichloroethane, the wt. % of the total weight of the components filled in.

A further embodiment of the aerosol preparation is characterized in that it comprises 33 to 43 wt. % organic propellant and hormone solvent, wt. % of the total weight of the filled-in components and the pressure in the aerosol container is about 5 to 7 bar.

In a preferred embodiment, the aerosol preparation is characterized in that it is 12.9 to 17.5 wt. % water, 4 to 6 wt. % carbon dioxide, 6 to 8 wt.% % dimethyl ether, 35 to 40 wt. % organic solvents, 32 to 35 wt. % methylene chloride and / or 1,1,1-trichloroethane and 0.5 to 3.1 wt. ? active substance, the indicated wt. % up to 100 wt. $ must complete 20.

The type and amount of active substance required, organic solvents for the propellants, solvents for the active substance, carbon dioxide, dimethyl ether, water and methylene chloride and / or 1,1,1-trichloroethane are taken into account in the application purpose in a test amount. Qualitatively and quantitatively taking into account the abovementioned weight percent areas in such a way that a homogeneous solution is created as the only phase, which can be perfectly sprayed into an aerosol ready for use.

Taking into account the above rules for technical handling, the following tolerance range for an aerosol preparation specially manufactured according to the invention, which was present as a homogeneous solution and as the single phase and which was perfectly sprayable, was determined: 13.62 to 14.35 wt. % water, 4.57 to 4.27 wt. % carbon dioxide, from 6.95 to 7.76 wt. % dimethyl ether, 34.06 to 32.86 wt. % iso-propanol and / or ethanol and / or n-propanol, * 3.72 to 4.36 wt. % acetone and / or methoxyacetone, 35.00 to 33.93 wt. % methylene chloride and / or 1,1,1-trichloro, 7908278 * 14-14 21013 / CV / ts * 1 ethane and 2.08 to 2.47 wt. % active ingredient

Again, the data for the wt. % so that the sum is 100 wt. % gives. In manufactured aerosol formulations of the above-mentioned preferred embodiment, the content of non-flammable ingredients was 55.02 to 55.33 wt. %. Compared with the prior art according to German patent application 2,705,872, this means 2 with a maximum of 40 wt. % flammable components a leap forward. On this basis, the aerosol preparations. 10 according to the invention have been used for the indicated purpose in transport, storage and use as a low-risk accident product, so that it can be referred to as a "safety aerosol preparation".

The above-described preferred embodiment 15 of the pressurized aerosol composition is illustrated by Examples 1 'to 5.

All aerosol preparations ,. described in Examples 1 to 5 are present as a homogeneous solution and as the only phase in the container. All aerosol preparations according to Examples 1 to 5 were easy to spray at 20 ° C, so that the entire contents of the box could be used according to the intended use. The ready-to-use aerosol products of Examples 1 to 5 have a pressure of about 5 to 7 bar after filling.

Further sample-like experimental studies have shown that in the aerosol preparation according to the invention approximately with the composition 13.62 to 14.35 wt. % water, 4.57 to 4.27 wt. % carbon dioxide, 6.95 to 7.76 wt. % dimethyl ether, 37.78 to 37.22 wt. % organic solvent, 35.00 to 33.93 wt. % methylene chloride and / or 1,1,1-trichloroethane and 2.08 to 2.47 wt. % active substance in which the values of the. % must make up to 100 35 wt. % taking into account the application purpose when examining test quantities, whereby a homogeneous solution as single phase is created and which can be sprayed perfectly, for example the following organic solvents up to the following quantities separately used 7908278 -15- 21013 / CV / ts could be; acetone 3.72 - 4.36 wt. % Ethyl acetate up to 4.36 wt. %, only in combination with 1,1,1-trichloroethane, 5 diacetone alcohol 1, 9δ - 2.37 wt. %, dimethoxymethane up to 4.3 wt. % only in combination with 1,1,1-trichloroethane, hydroxyacetone 3.72 - 4.36 wt. %, methoxyacetone 3.72-4.36 wt. 10 methyl acetate to 4.36 wt. ? only in combination with 1 / -1,1-trichloroethane, methyl ethyl ketone up to 4.36 wt. % only in combination with 1,1,1-trichloroethane, methyl isopropyl ketone up to 4.36 wt. % only in combination with 15 1, J, 1-trichloroethane.

Further random surveys have shown that mixtures of hydroxyacetone and methoxyacetone also range from 3.72 to 4.36 wt. % be useful.

EXAMPLE 1. A

In the manufacture of the dimethyl ether, a mixture of 16.7 wt.% Is mixed by mixing in a container. % dimethyl ether and 83.3 wt. % methylene chloride. This mixture is transported to the aerosol preparation manufacturer and further processed in the following manner.

25 B

A hair spray is manufactured. For this purpose, 2.37 g copolymerisate from N-vinylpyrrolidone and vinyl acetate in a weight ratio of 30: 70, 0.10 g perfume oil, 33.65 g iso-propanol, 13.70 g water and 3.97 g acetone are dissolved and brought a suitable aerosol container. The aerosol container is fitted with a spray valve according to. Fig. 1, Fig. 3 or Fig. 10, but without vortex nozzle 10. Then, 41.64 g of dimethyl ether-methylene chloride solution (16.7 wt.% dimethyl ether and 83.3 wt.% methylene chloride) and 4 are passed through the spray valve. 57 g of carbon dioxide pressed into the aerosol container.

7908278) t -16-21013 / CV / ts

A vortex nozzle 10 was then placed on the spray valve. The filled aerosol canister is illustrated by FIG.

The spraying behavior of this aerosol filling, due to the use of an aerosol preparation and a device according to the invention, largely corresponds to the behavior of corresponding hair sprays formulated with hydrofluorocarbons as propellant. EXAMPLE 2.

• A

At the place of manufacture of the dimethyl ether, a mixture of 18.6 wt.% Is mixed by mixing in a container. % dimethyl ether and 41.8 wt. % methylene chloride. This mixture is transported to the aerosol preparation manufacturer and further processed in the following manner.

B

15 A hair spray is manufactured. To this end, 2.47 g copolymerisate of N-vinylpyrrolidone and vinyl acetate in a weight ratio of 30: 70, 0.1 g perfume oil, 32.86 g ethanol, 14.35 g water and 4.26 g methoxyacetone are dissolved and filled in a suitable aerosol container . The aerosol container is equipped with a spray valve according to fig.

1, fig. 3 or fig. 10, but without a vortex nozzle. Then, 41.59 g of dimethyl ether methylene chloride solution (18.6% by weight of dimethyl ether and 81.4% by weight of methylene chloride) and 4.27 g of carbon dioxide are pressed into the aerosol container through the spray valve.

Then a vortex spray head 10 is placed on the spray valve.

The filled aerosol container is illustrated by Fig. 13.

The spraying behavior of this aerosol filling by the use of an aerosol preparation and a device according to the invention largely corresponds to the behavior of corresponding hair spray products formulated with fluorochlorocarbons as propellant. EXAMPLE 3-

35 A

At the place of manufacture of the dimethyl ether, a mixture of 16.6 wt.% Is mixed by mixing in a container. % dimethyl ether and 83.4 wt. % 1,1,1-trichloroethane. This mixture is transported to the manufacturer of aerosol formulations and further processed in the following manner.

B

A hair spray was made. For this purpose 2.08 g copolyeraisate from N-vinylpyrrolidone and vinyl acetate in a volume ratio of 70:30, 0.1 g perfume oil, 33.96 g iso-propanol, 13.62 g water and 10 3.72 g acetone were dissolved and filled in a suitable aerosol container.

The aerosol container was equipped with a spray valve according to fig. 1, fig. 3 or fig. 10, but without vortex nozzle 10. Then 41.95 g of dimethyl ether - 1,1,1-trichloroethane solution (16.6 wt. % dimethyl ether and 83.4% by weight of 1,1,1-trichloroethane) and 4.57 g of carbon dioxide in the aerosol container. A vortex spray head 10 was then placed on the spray valve. The filled aerosol container is illustrated by Fig. 13.

The spraying behavior of this aerosol filling, due to the use of an aerosol preparation and a device according to the invention, largely corresponds to the behavior of corresponding hair spray products, which have been formulated with hydrofluorocarbon propellants. EXAMPLE 4.i

a

At the place of manufacture of the dimethyl ether, a mixture of 18.6 wt.% Was mixed by mixing in a container. % dimethyl ether and 81.4 wt. % 1,1,1-trichloroethane. This mixture was transported to the aerosol formulator manufacturer and further processed in the following manner.

30 B

A deodorant spray was produced. To this end, 0.10 g of 2,4,4-trichloro-2-hydroxydiphenyl ether, 2.37 g of benzoic acid ethyl ester, were added.

14.35 g of water, 32.86 g of iso-propanol, 3.86 g of acetone and 0.50 g of perfume oil are dissolved and filled into a suitable aerosol container. The aerosol container was fitted with a spray valve according to fig. 1, 7908278 -18- 21013 / CV / ts fig. 3 or fig. 10, but without vortex nozzle 10. Subsequently 41.69 g of dimethyl ether-1,1,1 were passed through the spray valve trichloroethane solution (18.6 wt.% dimethyl ether and 81.4 wt.% 1,1,1-trichloroether) and 5 4.27 g carbon dioxide pressed into the aerosol container. The vortex spray head 10 was then placed on the spray valve. The filled aerosol box is illustrated by Fig. 13.

The spraying behavior of this aerosol filling by the use of an aerosol preparation and a device according to the invention corresponds to a great extent to the behavior of a corresponding deo-spray product formulated with hydrofluorocarbon as propellant.

EXAMPLE 5.

a

At the place of manufacture of the dimethyl ether, a mixture of 16.6 wt.% Was mixed by mixing in a container. % dimethyl ether and 83.4 wt. % 1,1,1-trichloroethane. This mixture was supplied to the aerosol formulator manufacturer and further processed in the following manner.

B

20. A deodorant spray was produced. To this end, 0.10 g of 2,4,4-trichloro-2-hydroxyphenyl ether 1.98 g of benzoic acid ethyl ester, 13.62 g of water, 3.3> 56 g of ethanol, 3> 72 g of methoxyacetone, and 0.50 g perfume oil dissolved and placed in a suitable aerosol container. The aerosol container was equipped with a spray valve according to fig.

1, fig. 3 or fig. 10, but without vortex nozzle 10. Then 41.95 g of dimethyl ether, 1,1,1-trichloroethane solution (16.6 wt.

dimethyl ether and 83.4 wt. % 1,1,1-trichloroethane) and 4.57 g of carbon dioxide pressed into the aerosol container.

A vortex spray head 10 was then placed on the spray valve. The filled aerosol can is illustrated by Fig. 13.

The spraying behavior of this aerosol filling, due to the use of an aerosol preparation and a device according to the invention, largely corresponds to the behavior of corresponding deo-spray products, which are formulated with hydrofluorocarbons as propellant.

7908278 -19- 21013 / CV / ts

In the above Examples 1-5 and the further investigations, an aerosol can according to Fig. 13 was used, which was provided with a spray valve according to Fig. 1, Fig. 3 or Fig. 10. The water contained in the aerosol can according to Fig. 13 technical progress achieved with homogeneous filling is shown in the following Table I in comparison with the aerosol preparations according to German patent application 2,705,872.

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The following components were taken into account when calculating the comparatives for the non-flammable components: hair spray resin, methylene chloride, water, carbon dioxide, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 1.1 , 1-trichloroethane, benzoic acid ethyl ester.

The aluminum chlorohydroxide-propylene glycol complex present in Example 10 of German patent application 2,705,872 * was added as 50 wt.

% not flammable.

The above comparative figures show that a leap-improved aerosol preparation is provided by the present invention, since, according to the prior art, 40% by weight of non-flammable components are present in the fluorocarbon-free aerosol preparation, while the aerosol preparation according to the invention, the content of non-flammable components in all examples is at least 55.02 wt. %.

The second special use of mixtures of water and dimethyl ether, which are obtained according to the method of the invention, for the manufacture of aerosol preparations is now briefly described.

Hereby a pressurized carrier mixture for aerosol preparations of a self-propelled spray system for use as a universal spray on the basis of active / solvent solvents, water and propellants to be dispensed is manufactured in a spray container, the carrier mixture being present as a homogeneous solution and it is 60.0 - 50.1 wt. % water, 38.5-28.7 wt. % dimethyl ether, 0.5-10.0 wt. % iso-propanol and / or ethanol and / or n-propanol, and 1.4-0.8 wt. % carbon dioxide, said wt. % must complement each other up to 100 wt. %.

For the purposes of the present invention, non-flammable ingredients are understood to be water, carbon dioxide, and the like other ingredients, for example, hormones, which have an ignition temperature above 600 ° C.

The carrier mixtures of the aerosol preparations according to the invention can be formulated with cosmetic, hygienic or medicinally active ingredients (active ingredients) and give preparations for various purposes, for example as cosmetic, space or medicinal spray, preferably de-sprays.

7908278 -22- 21013 / CV / ts

As active ingredients, hair care substances, hairspay resin, perspiration inhibitors, deodorants, bactericides, perfume, fungicides, plant and / or organ extracts can be included.

The aqueous carrier mixture used in the aerosol preparations according to the invention is based on the propellants carbon dioxide and dimethyl ether as propellant.

An embodiment of the carrier mixture is characterized in that as propellant 0.7 - 1.1 wt. % carbon dioxide and 28.7-38.5 µm.% 10 of dimethyl ether, the wt. % of the total weight of the aqueous carrier mixture.

Another embodiment of the carrier mixture is characterized in that it contains 54.0 -70.0 wt. % water, the wt. % of the total weight of the aqueous carrier mixture.

A further embodiment of the carrier mixture is characterized in that it contains 5.0-10.0 wt. % organic solvent, the wt. % are based on the total weight of the aqueous carrier mixture.

In a preferred embodiment, the carrier mixture is characterized in that it contains 54.0 - 55.0 wt.% Water, 0.9 - 1.1 wt. % carbon dioxide, 38.5 - 35.1 wt. % dimethyl ether, 9.0-6.4 wt. % alcohols with 2 and / or 3 C atoms, the indicated weight percent by weight of up to 100 wt.% % must complete.

In the manufacture of the carrier mixture or the aerosol compositions of the invention, the type and amount of active ingredients required of the said species, carbon dioxide, dimethyl ether and water, are taken into account in the test's intended purpose. -30 quantity qualitatively and quantitatively taking into account the above-mentioned wt. areas are adjusted in such a way that a homogeneous solution is created as the only phase, which can be perfectly sprayed into an aerosol ready for use.

In manufactured carrier mixtures for aerosol preparations of the above-mentioned preferred embodiment, the content of non-flammable components was 55.1 - 55.9 wt. %.

This means with respect to the prior art according to German patent application 2,705,872 example 2, with a maximum of 40 wt. % 7908278 «* -23- 21013 / CV / ts non-flammable components a leap forward. For this reason, the aerosol preparations according to the invention are supplied for the stated purpose during transport, storage and use as a very low risk of accidents product, so that it can be referred to as a "safe heis aerosol preparation".

Compositions for suitable carrier mixtures are shown in Table II.

EXAMPLE 6.

a

At the place of manufacture of the dimethyl ether, a mixture of 30.0 wt.% is mixed by mixing in a container. % dimethyl ether and 70.0 wt. % water manufactured. This mixture is transported to the aerosol preparation manufacturer and further processed in the following manner.

B

15 Following the carrier mixture J given in Table II

a hair care product is manufactured. To this end, 0.80 g of polyvinylpyrrolidone, 0.10 g of perfume oil and 6.86 g of isopropanol 20 are introduced into a suitable aerosol container. The aerosol container is fitted with a spray valve according to fig. 1, fig. 3 or fig. 10, but without vortex nozzle 10. Then, through the spray valve, 77.04 g of an aqueous dimethyl ether solution (30 wt.% Of dimethyl ether and 70 wt.% Of water) are added, 14.11 g of dimethyl ether and 1.09 g of carbon dioxide are pressed into the aerosol container. A vortex nozzle 10 is then placed on the spray valve. The filled aerosol can is filled by fi g. 13 clarified.

The spraying behavior of this aerosol filling, due to the use of a carrier mixture and a device according to the invention, largely corresponds to the behavior of corresponding hair care products, which are formulated with hydrofluorocarbons as propellant.

EXAMPLE 7.

a

"Work is as described in Example 6, Part A.

7908278 -24- 21013 / CV / ts

B

Following the carrier mixture H indicated in Table II, a deo-spray preparation is prepared according to the following formulation: 98.00 wt. % carrier mixture H, 5 ', 0.10 wt. % bactericidal agent for deo-spray, 0.50 wt. % perfume oil, 0.30 wt. % solvents and 1.10 wt. % degreaser for deo-spray.

To this end, 0.10 g of bactericidal agent for deo-spray, 0.50 g of perfume oil, 0.30 g of solvent and 1.10 g of degreaser for deo-spray were dissolved in 8.40 g of ethanol and filled in a suitable aerosol container. . The aerosol container was equipped with a spray valve according to Fig. 1, Fig. 3 or Fig. 10, but without a vortex nozzle 10. Subsequently, 76.57 g of an aqueous dimethyl ether solution (30% by weight of dimethyl ether and 70% by weight of water) were passed through the spray valve. .03 g of dimethyl ether and 1.00 g of carbon dioxide are pressed into the aerosol container.

The vortex spray head 10 was then placed on the spray valve. The filled aerosol can is illustrated by Fig. 13.

The spraying behavior of this aerosol filling, due to the use of a carrier mixture and a device according to the invention, largely corresponds to the behavior of corresponding deo-spray products which have been formulated with hydrofluorocarbons as propellant. EXAMPLE 8 ..

a

30 Work was performed as indicated in Example 6, Part A.

B

Following the carrier mixture I shown in Table II, an anti-transparency composition of the following formulation was prepared.

96.7 wt. % carrier mixture I, 35 3.0 wt. % antiperspirant antagonist, and 0.3 wt. $ perfume oil.

To this end, 3.0 g of antiperspirant, 7908278 -25- 21013 / CV / ts, 0.3 g of parfumokie, 10.0 g of water and 9.67 g of ethanol were dissolved and placed in a suitable aerosol container. The aerosol container was equipped with a spray valve according to Fig. 1, 5, Fig. 3 or Fig. 10, but without vortex nozzle 10. Subsequently, through the spray valve, 60.31 S aqueous dimethyl ether solution (30 wt.% Dimethyl ether and 70 wt.% Water) 15.75 g of dimethyl ether and 0.97 g of carbon dioxide are introduced into the aerosol container.

A vortex spray head 10 was then placed on the spray valve.

The filled aerosol can is illustrated by Fig. 13.

The spraying behavior of this aerosol filling, due to the use of a carrier mixture and a device according to the invention, corresponds to a great extent to the behavior of corresponding anti-perspiration spray products formulated with hydrofluorocarbons as propellant.

7908278 -26- 21013 / CV / ts

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Further investigations have shown that the carrier mixtures H and I in Table II, due to the corresponding addition of active ingredients, are particularly well suited to aerosol preparations for body care products, hair care products, household articles, medicinal sprays. manufacture technical aerosols and perfume sprays.

EXAMPLE 9.

a

At the place of manufacture of the dimethyl ether, a mixture of 36.08 wt.% Is mixed by mixing in a container. % dimethyl ether, 55.26 wt. % water and 8.66 wt. % ethanol. This mixture is transported to the aerosol preparation manufacturer and further processed in the following manner.

B

Following the carrier mixture H indicated in Table II, a deo-spray preparation is prepared according to the following formulation: 98.00 wt. % carrier mixture H, 0.10 wt. % bactericidal agent for deo-spray, 0.50 wt. % perfume oil, 0.30 wt. % solvents and 1.10 wt. % degreaser for deo-spray.

To this end, 0.10 g of deodorant bactericidal agent, 0.50 g of perfume oil, 0.30 g of solvent and 1.10 g of deo-spray degreaser were introduced into a suitable aerosol container. The aerosol container was equipped with a spray valve according to fig. 1, fig. 3 or fig. 10, but without vortex nozzle 10.

Then, 97.0 g of a single-phase, aqueous-alcoholic dimethyl ether solution (36.08% by weight of dimethyl ether, 55, 26% by weight of water and 8.66% by weight of ethanol) and 1.00 g of carbon dioxide were introduced into the aerosol container through the spray valve.

The vortex spray head 10 was then placed on the spray valve. The filled aerosol can is illustrated by Fig. 13. The spraying behavior of this aerosol filling, due to the use of a carrier mixture and a device according to the invention, largely corresponds to the behavior of corresponding deo-spray products which are formulated with hydrofluorocarbons as propellant.

7908278 -28- 21013 / CV / ts EXAMPLE 10.

a

At the place of manufacture of the dimethyl ether, a mixture of 35.35 wt.% Was mixed by mixing in a container. % dimethyl ether, 54.55 wt. % water and 10.10 wt. % ethanol. This mixture was transported to the aerosol formulator manufacturer and further processed in the following manner.

B

Following the carrier mixture I shown in Table II, an antiperspirant spray preparation of the following formulation was prepared: 96.70 wt. % carrier mixture I, 3, 0 wt. % antiperspirant and 0.30 wt. % paffum oil.

For this purpose 3.0 g of antiperspirant and 0.3 g of perfume oil were introduced into a suitable aerosol container. The aerosol container was equipped with a spray valve according to Fig. 1, Fig. 3 or Fig. 10, but without vortex nozzle 10. Then, through the spray valve, 95.73 g of a single-phase aqueous alcoholic dimethyl ether solution (35.35% by weight of dimethyl ether, 54, 55 wt.% Water and 10.10 wt.% Ethanol) and 0.97 g of carbon dioxide are pressed into the aerosol container.

A vortex spray head 10 was then placed on the spray valve.

The filled aerosol can is illustrated by Fig. 13. The spraying behavior of this aerosol filling, due to the use of a carrier mixture and a device according to the invention, largely corresponds to the behavior of corresponding antiperspirant spray products, which are formulated with hydrofluorocarbons as propellant. EXAMPLE 11.

"30 a

At the place of manufacture of the dimethyl ether, a mixture of 37.98 wt. % dimethyl ether, 55.02 wt. % water and 7.00 wt. % isopropyl alcohol.

B

A hair care product was manufactured in addition to the carrier mixture J shown in Table II. For this purpose, 0.80 g of polyvinylpyrrolidone and 7908278-29- 21013 / CV / ts 0.10 g of perfume oil were introduced into a suitable aerosol container.

The aerosol container was equipped with a spray valve according to Fig. 1, Fig. 3 or Fig. 10, but without vortex nozzle 10. Then, 98.01 g of a single-phase aqueous iso-propyl alcoholic dimethyl ether solution (37.98% by weight of dimethyl ether, 55.02% by weight of water and 7.00% by weight of isopropyl alcohol) were passed through the spray valve. and 1.09 g of carbon dioxide are pressed into the aerosol container. A vortex spray head 10 was then placed on the spray valve. The filled aerosol can is illustrated by Fig. 13.

The spraying behavior of this aerosol filling, due to the use of a carrier mixture and a device according to the invention, largely corresponds to the behavior of corresponding hair care products, which are formulated with hydrofluorocarbons as propellant.

15 EXAMPLE 12.

The formulation was prepared according to the data in Example 9, however, in deviation therefrom in a mixing tank previously dissolved in the carrier mixture H, which is still free of carbon dioxide, the indicated amount of bacteria repellant, perfume oil, solvent promoter and degreaser. The mixture was then pressed into an aerosol container with mounted spray valve, but without vortex nozzle 10.

The specified amount of carbon dioxide was then pressed through the spray valve into the aerosol container. The vortex spray head 10 was then placed on the spray valve.

The spraying behavior of this aerosol filling is similar to that of Example 9-EXAMPLE 13-

The formulation was prepared according to the data in Example 10. However, deviating from this, the method given in Example 12 was performed.

The spraying behavior of this aerosol filling corresponds to that of the filling according to example 10.

EXAMPLE 1¾.

The formulation according to the data in Example 11 was prepared. However, in deviation therefrom, the procedure shown in Example 12 was carried out.

The spraying behavior of this aerosol filling corresponds to that of the filling according to example 11.

7908278 -30- 21013 / CV / ts

In the above-described embodiments, for example, 2,4,4'-trichloro-2'-hydroxy-phenyl ether can be used as a bactericidal agent for deo-spray. In the examples above, hydrogenated castor oil, ethoxylated, with about 40 moles of ethylene oxide per mole, may be used as the promoter solution for deospray. In the previous embodiments, for example, polyethylene glycol having an average molecular weight 400 can be used as a degreasing agent for deo-spray. In the above examples, aluminum hydroxychloride can be used as antiperspirant.

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The following components were considered when calculating the comparative figures for the non-flammable components.

1. According to German patent application 2,705,872: hair spray resin, methylene chloride, water, 1,1,1-trichloroethane, the aluminum chlorohydroxide-propylene glycol complex present in example 10 was assumed to be 50% non-flammable. 2. According to the present invention: hair spray resin,. water, carbon dioxide, bacteria pesticide, perspiration inhibitor, solution improver.

The above comparative figures show that improved carrier mixtures or aerosol preparations are made available in rapid succession by the present invention, since, according to the prior art, advantageously, in the fluorochlorocarbon-free aerosol preparation, wt. % non-flammable components are present, while in the carrier mixture according to the invention the content of non-flammable components in all examples is at least 55 wt. %.

- CONCLUSIONS - 7908278

Claims (9)

Process for the production of a dimethyl ether preparation which is safe to transport, characterized in that 5 a) the dimethyl ether is mixed with water under pressure to form a homogeneous solution, or b) the dimethyl ether with methylene chloride and / or 1,1,1 trichloroethane is mixed under pressure until a homogeneous solution and a mixture of a) or b) or both mixtures a) and b) is used as propellant for the production of carrier mixtures in aerosol preparations. A method according to claim 1, characterized in that a) about 6.0 to about 32.0 wt. % dimethyl ether and about 68.0 to about 94.0 wt. % water, the wt. % of the two components together up to 100 wt. % must complete. 15 The method according to claim 1, characterized in that a) about 27% to about 32.0% by weight. % dimethyl ether and about 68.0 to about 73> 0 wt. % water, the wt. % of the two components together up to 100 wt. % must complete. A method according to claim 1, characterized in that b) about 20 10.0 to about 45.0 wt. % dimethyl ether and about 55.0 to about 90.0 wt. % of methylene chloride and / or 1,1,1-trichlorobrethane are used, the wt. % of the components together up to 100 wt. % must complete. 5. A method according to any one of the preceding claims, characterized in that the mixture a) or b) in the presence of up to about 11 wt. % ethanol and / or n-propanol and / or iso-propanol is produced, the wt. % indications refer to the weight of the mixture a) or the mixture b). A method according to claim 1, characterized in that a) about 30 10.0 to about 40.0 wt. % dimethyl ether, about 15.0 to about 5.0 wt. % ethyl alcohol and / or iso-propanol and / or n-propanol and about 85.0 to about 45.0 wt. % water, the wt. % of the components together up to 100 wt. % must complete. A method according to claim 1, characterized in that: b) about 35 10.0 to 40.0 wt. % dimethyl ether, about 15.0 to about 5.0 wt. % ethyl alcohol and / or iso-propanol, and / or n-propanol and about 85.0 to about 45.0 wt. % of methylene chloride and / or 1,1,1-trichloroethane are used, the wt. % of the components together up to 100 wt. 7908278 -34- 21013 / CV / TS% must be completed. Use of a dimethyl ether mixture obtainable according to any one of claims 1 to 7 as propellant in pressurized carrier mixtures for aerosol preparations or in aerosol preparations. Use of the homogeneous solution manufactured according to any one of claims 1 to 7, as a propellant filling in aerosol cans, which are present as a medicinal, cosmetic, space or universal spray, which form as a fine atomizing valve with a self-closing spray valve for gas and / or liquid solutions containing The pressurized container is equipped with a 14th shaft which is axially movable within a valve body against the action of a closing compression spring, which is supported via the valve body, an axial outlet channel in the valve shaft with the internal of the pressurized container is connected by means of a radial outlet channel, which opens into an annular groove in the valve shaft, the radial outlet channel of which is closed in the closed position by an elastic annular sealing disc, the cylindrical inner circumference of which radial prestressing engages the annular groove and the outer edge of which is between valve body and cover dome is not clamped, in the closed position the shoulder of the annular groove facing the container rests close to the sealing disc under the action of the closing compression spring, while the of the annular groove in the valve shaft is on the above neutral bending zone the circumferential parts of the hole in the sealing disc act in forces that are in each case radially and axially parallel to the valve shaft, which force components are largest at the top edge and, when the valve is closed, also the annular groove in the valve shaft at the bottom neutral. bending zone circumferential portion of the hole in the sealing disc forces forces into a force component which is radial to the valve shaft and which is an axis-parallel force component, these 30 force components being the largest on the bottom hole edge of the sealing disc, characterized in that they are used for the special purpose the combination of versions a, b, c, d, e and f It is also present so that, a) a throttle body (32) is formed in the axial outlet channel (8) of the valve shaft portion 35. (2), which is constructed as a cylindrical pierced body and in the centrally arranged throttle channel. (33) a bridge section (3-1) with the passage opening (27) lying in the middle of the throttle body (32) is provided, 7908278 -35- 21013 / CV / ts b) the swirl nozzle (10) with swirl nozzle inserted (37) is fixed but releasably mounted and the spray head (12) has a cylindrical nozzle receiving pin (13), which has two axially parallel faces (35), which are arranged perpendicularly from the nozzle opening (36), 5 c) the nozzle receiving pin ( 13) when pressed, carries the swirl nozzle (37), of which four ridges (38) are located on the end face of the nozzle receiving tap (13), d) the four ridges (38) around the nozzle opening (36) on the inside of the swirl nozzle ( 37) form an approximately cylindrical swirl chamber 10 (44) and the ridges {38) release the entry channels (40) which lie tangentially to the circular nozzle opening (36), concentrically on the outer surface of the swirl nozzle (37) relative to the nozzle opening (3D a cylindrical extension mating (14) is provided, 15 f) the vortex nozzle (10) comprises an approximately eccentrically arranged narrowing chamber (11) communicating with the annular channel (42) and below the receiving opening (43) below it for receiving of the folding shaft part (9) for fine atomization of the completed spray preparation. 7908278