DE1444092C - Process for improving the dyeability of fibers and yarns - Google Patents

Description

1 2

The invention relates to a method for tion or crosslinking of the polyepoxides and thus a

Improvement of the dyeability of textile fibers, the chemical change of the fiber takes place,

be obtained by pressing mixtures, It has now surprisingly been found that

which are essentially obtained from noticeably better properties,

a) a highly crystalline polyolefin, which with the help. 5 if one takes from the above-described mixtures stereospecific catalysts produced gene obtained fibers not with the already formed was, and · Diepoxydverbindungen, but with the corresponding

b) a basic nitrogen-containing compound treated the chlorohydrins and sodium hydroxide, exist. where the diepoxy compounds at the moment of addition

In Italian patent 1 611 258, the io has to be brought together or, even better, directly on the

Applicant has already described a method according to which fibers are formed.

the textile fibers made of polyolefins with a special contrast to the way of working of the Austrian

Ability to absorb dyes from various class patents 219 001 and Belgian patents

sen, especially for acidic dyes by pressing 589 909, after which the fiber, for example, with ethylene

sen of mixtures of crystalline polyolefin with 15 glycol diglycidyl ether treated as a diepoxy compound

The procedure according to the invention has 1 to 25 percent by weight, based on the weight delt

of the polyolefin and a polymeric basic stick advantage of the greater stability of the modi

substance-containing compound can be obtained. fication products. It is known that ethylene glycol

It is also known to use cellulose textile fibers with diglycidyl ether because of the strong polymerization epoxies, treat like epichlorohydrin, although the epoxy groups tend to be very unstable. The after free hydroxyl groups of cotton on the poly-epoxy obtained by the procedure according to the invention under opening. of the epoxy ring, olefin fibers and threads are also, according to An (J. B. M c K e 1 ν e y, Textile Research Journal, 29, also color in their wash and rub resistance Pp. 918 to 925; French patent 1 178 919). think. Furthermore, the working die according to the invention Addition of epichlorohydrin to cellulose is much easier than that according to the Belgian one with the use of aqueous alkali can lead to patent specification 589 909 or Austrian patent crosslinking of the cellulose macromolecule chains signed 219 001, since the cumbersome isolation of the used with each other (British patent specification Diepoxyverbindungen not applicable.

.596 282, Swedish patent specification 133 768 and USA.- The dichlorohydrins are in aqueous solutions,

U.S. Patent 2,985,501). Alkali is only dissolved in organic solvents or in water

used for the purpose of the reaction between the free state, used.

To catalyze cellulose and the crosslinking agent. The sodium hydroxide goes straight into the jar

An improvement in the dyeability by the apparatus or apparatus in which the fibers are treated

Treatment with epoxies and alkali is not carried out immediately before or after

Speech. - 35 Introducing the fibers into the vessel.

From the German Auslegeschrift 1 002 283 it is The treatment of the yarns is before and or or

also already known, yarns made from thioureas for a few seconds up to 2 to after they have been drawn

Improvement of toughness with epoxy resins to 3 hours at a temperature of room temperature

treat. However, the treatment is carried out in the absence of up to about 1O ⁰ C below the melting point of the

Essence of alkali. Performed according to the Canadian patent 4 ° Polymers. The sodium hydroxide will

558 726 synthetic fibers and gel are added to the solution of dichlorohydrin in the amount

weave to improve their dyeing properties with the stoichiometric for its implementation in the di-

Polyepoxides and an amine as hardening catalyst is required. The dichlorohydrin can be

treated in an aqueous medium and used either pure or in the raw state,

finally at temperatures between 100 and 200 ^° C. The invention is illustrated in the following examples

hardened. A polymerisation is explained by the hardening.

Example 1
Dichlorohydrin from ethylene glycol diglycidyl ether

/ CH ₂ -CH-CH ₂ -O-CH ₂ -CH ₂ -O-CH ₂ -CH-Ch ₂ X

\ C1 OH OH Cl /

is prepared by adding 64 g (1 mol) of ethylene for 5 minutes at 25 ° C. in a 5% strength aqueous solution

giykol and 0.4 ml of boron trifluoride in a 45% ethereal solution of ethylene glycol diglycidyl ether dichlorohydric

Bring the solution into a 500 ml three-necked flask, which was brought with it, to which 13 g NaOH / l solution was added

Thermometer, stirrer and reflux condenser had been provided. The yarn is made with the help of rollers

is. It is now ^{heated to 90 °} C. and squeezed off within, with approximately 70% of the solution on

185 g of epichlorohydrin were added for 2 hours. The mi-yarn are left on, and then one for 20 minutes

The mixture is left to react at 90 ° C for 1 hour and subjected to thermal treatment at 120 ° C for 60 years,

then cooled to room temperature. The treated yarn thus obtained is treated with the following dyes

Dichlorohydrin with a titer of approximately 72% is colored:

ready to use. Then a yarn, the alizarin yellow 2 G (C. 1.14 025) (sour)

by melt spinning a mixture of 95% wool red B (C.I. 27 200) (acidic)

65 Alizarin Red S (C. I. 58 005) (acidic) produced by means of stereospecific catalysts

Polypropylene ([η] = 1.51, ash content = 0.028%, alizarin blue SE (CI 63 000) (acidic)

Residue after heptane extraction = 95.6%) and 5% acid black JVS (C. I. 20 470) (acidic)

Octadecylamine- epichlorohydrin-piperazine- condensate Setacyllichtblau BG (C.I. 61 505) (plastol-soluble)

Claims (6)

I 444 092 3 4 The colorations are carried out using Example5
Yarn is kept in baths containing 2.5% dye, based on the weight of the threads, in a ratio- A yarn obtained by melt spinning a mini from threads to bath of 1:40 included, schung from 95% with the help of stereospecific The staining with acidic or metallized 5 catalysts produced polypropylene ([η] = 1.51, Dyes are in the presence of 3% ammonia ash content = 0.028%, residue after heptane acetate (based on the fiber weight) and 1% of an extraction = 95.6%) and 5% of an octadecylamine surface-active agent, namely the condensate - epichlorohydrin - hexamethylenediamine - condensate, Sation product of ethylene oxide with an alkyl is 30 minutes at 60 ° C in a 3% aqueous phenol, carried out 30 minutes after the beginning of the io solution of dichlorohydrin of ethylene glycol Sedens, 2%, based on the fiber weight, glycidyl ether is introduced. a 10% acetic acid solution is added to the Then, as in Example 4, sodium hydroxide solution is added Improve utilization of bathrooms. puts. The yarn is heated with hot air for 20 minutes The stains are treated with plastic-soluble dyes at 130 °, washed with water and dried, are in the presence of 2% (based on the fiber weight) of a surface-active agent to dye the dyes listed intensively and genuinely, leads. After dyeing, the yarns are flowable. . rinsed with water and appear both at acidic and - B e 1 s ρ 1 e 1 0 even with metallized or plasto-soluble dye. A yarn obtained by melt spinning a Intense colored fabrics. The authenticity of the stains 20 mixture of 95% with the help of stereospecific Polypropylene produced against light, against washing and against friction with catalysts ([η] = 1.51, turns out to be completely satisfactory. Ash content = 0.028%, residue after heptane extraction = 95.6%) and 5% isotactic crystalline Example 2 _nem poly-2-vinylpyridine with [η] = 0.22, 40 minutes The yarn obtained according to Example 1 is in a 25 th at 40 ° C in a 10% aqueous solution of Di-Bad brought the 100 g / l dichlorohydrin of ethylene chlorohydrin of ethylene glycol diglycidyl ether eineglykoldiglycidyläther and contains 26 g / l NaOH. That dives. Feed speed of the yarn is 10 m / then the stoichiometrically equivalent Minute, the bath temperature 30 ° C. The yarn is added 2 Mi- amount of sodium hydroxide solution. Finally, centric leave the grooves in the epoxidation bath. Finally, it is fuged for 30 minutes, treated with hot air at 130 ° C for 30 minutes, it is carried out between rollers, the yarn being 2% washed with water and dried. That so Epoxy (based on pure epoxy) remain. The yarn in question can be used with the The collected yarn is dyed intensely and genuinely in an autoclave at 120 ° C. Treated with steam for 1 hour. The yarn receives with ρ ■. ,. the dyes mentioned in Example 1 intensive and 35 real staining. 21 monochloroglycerin and 5 ml of a 45% essential solution of boron trifluoride will be in a Example 3 3-1 three-necked flask placed with a thermometer, A yarn obtained by melt spinning is provided with a reflux condenser and dropping funnel. the Mixture of 95% with the help of stereospecific 40 Mixture is heated to 95 to 100 ° C and 610 ml Polypropylene prepared from catalysts ([η ] = 1.51, epichlorohydrin added within 2 hours so that Ash content = 0.028%, residue after heptane, the temperature is kept constant. After the end extraction = 95.6%) and 5% Octadecylamine-Epi- des addition, the flask is for a further 2 hours chlorohydrin-piperazine condensate, is held for 5 minutes at 95 to 100 ° C, and the excess of mono- 40 ° C in a 6% aqueous solution of ethylene glycol 45 chloroglycerol is distilled off under vacuum, diglycidyl ether dichlorohydrin immersed. Then the dichlorohydrin Sodium hydroxide is added, corresponding to 80% of the q ^ CH-CH O CH CH CH theoretical amount, based on dichlorohydrin, to 1 ² 1 ^{2 2} ι ι ² set; Finally it is centrifuged, in the warmth '' _H ' _H ' treated and dried. The treated yarn leaves 5 ° with the dyes listed in Example 1 at 150 to 165 ° C under a pressure of 3 mm and really stain. distilled. The yield of pure dichlorohydrin . . ,. lies over. 80%. Example 4 A 40% strength aqueous solution of this di- A yarn obtained by melt spinning a 55 chlorhydrins and using the theoretical Mixture of 95% polypropylene, made with a lot of sodium hydroxide solution. A strand of the im With the help of stereospecific catalysts ([η] = 1.51, Example 1 described yarn is in the thus obtained Ash content = 0.028%, residue brought to heptane solution, squeezed between rollers, extraction = 95.6%), and 5% of a dichloroethane with about 2% pure diglycidyl ether on the yarn Hexamethylenediamine condensate, will remain for 10 minutes 60, and then with hot air 15 minutes on heated at 20 ° C in a 3% aqueous solution of ethylene 130 °. It will be acidic and metallized glycol diglycidyl ether dichlorohydrin immersed. Real and real dyes after this epoxy treatment finally the equivalent amount of sodium bright stains are obtained, hydroxyd added as in example 3, then centrifu- _D ... yed, treated in an autoclave for 1 hour at 120 ° C, 65 ^v atent claims: washed with water and dried. The treated 1. method for improving the dyeability Yarn can be with those listed in Example 1 of fibers and yarns made by pressing Coloring dyes intensely and genuinely. Mixtures of essentially crystalline poly- olefinic and polymeric basic nitrogen-containing compounds were obtained, characterized in that that the fibers and yarns of the action of a dichlorohydrin and a alkaline compound are subjected to the corresponding diepoxyd with the chlorohydrin can form. 2. The method according to claim 1, characterized in that fibers and yarns simultaneously or in two successive stages with dichlorohydrin and sodium hydroxide solution as the alkaline compound be treated. 3. Process according to Claims 1 and 2, characterized in that the treatment of the fibers is carried out for a few seconds to 2 to 3 hours at temperatures between room temperature and about 10 ^° C. below the softening point of the polyolefin. 4. Process according to Claims 1 to 3, characterized in that the crystalline polyolefin highly crystalline polypropylene is used. 5. Process according to Claims 1 to 4, characterized in that the dichlorohydrin is in anhydrous State used in aqueous solution or in solution in an organic solvent will. '' · 6. The method according to claims 1 to 5, characterized in that the treatment of the fibers is carried out continuously or discontinuously before or after stretching.