DE1669261C - Removable coating agent based on polyethylene, plasticizers and common additives - Google Patents

Description

Pu ■■ - uuesencie. \ rhmUnvi he / iehl MeIi on an aiviehhares I hcr / ii ^ i- ιηιΙΊοΙ on the basis of l'i'l-.ailnleii. Plasticizers, and usual additives.

i ι 1 ^ ί bcr / iigsiiniiel of the message isi intended to Oil items especially during the first half of the year and storage against corrosion and mechanical damage 7U schül / cn

I ni the metal products with this coating / u

vi-Jien. one dips the same into the melted min about IMO to I ¹ JO C and then cools it down after I take it out of the wheel.

I) ei., RiiL.e K.orroMonsschut / initiel were initially mainly made of wax, chlorinated paraffin or ail ·.! 1 made of human substances. This protective principle iia-.i'.Mi however does not have the necessary mechanical I nausea and were against the lin! Luli of alternating not resistant to low and high temperatures.

I in I ori stepped on this (iebiet bedi'uleic one kiTrosiousichut / mass. which on the (wound '.on Cellulose- nnil Polystv rol-Veibmdungcii made will. Athvlcellulose with plasticizers (like Phthalal. Sebacal) and (Ilen (like Mineral and vegetable oils). Wax, llar / en and a number of other ingredients.

One disadvantage of the cells is their limited thermal and chemical resistance. At'u! Cellulose is subject to a temperature above | s () (of the decomposition. The Polvstvrol mass on the other hand has only an extremely low resistance to the effects of organic solvents.

With the annulment of the annulment overcome these disadvantages.

(The nature of the irindiing is thus something that can be deduced (iber / ugsiniltel to tier (inmdlage son Pol \: itln! en. Plasticizers and usual / usät / s. which daili '/ vh is known because the ί Iber / iigsmillei as plasticizer I) oct \ lphthalate in an amount of 'JD to' JS (iewiclitsteilen enlhäll.

ί surprisingly became i'jf siuleii, dall das Invention according to the invention and towards the effect of organic Solvent is relatively stable.

In French Patent ^l J:> 7/42 be / was iige of a (iemisch \ on Polsätlnlen and amorphous paraffin described via /, such coatings are not awarded the high anti-corrosive benefit of a Polyüthylenüber / uges the Irfuulung, as they not only have a lower load, but the polyamide is only suspended in the paraffin milk, which means that the polyamide cannot function as a binding agent.

From the German publication 7 ⁽ ) 4dl6 i'eriier ■ • in process / ur 1 is a performance of Polväthvlenfolien

known to entliallen small amounts (about H) ^0. ,,) mineral oil. The film produced by pressing has self-adhesive properties and adheres to various smooth surfaces. As i'her / 'igsmitiel in the sense of the present I-rlindiing this-. However, material not suitable.

The French patent specification I 255 954 describes Ciemische of Polvätlnlen and waxes. Oic waxes but do not play here as in the present case the Ilaupirolle, but theirs is only one helpful role in this respect / thought. than she got that from the Compress the actual Lber / ug of precipitated polymers should.

The rushes of the French Patcishnfi! IM) 47.1 consist of polyallels and low levels of ¹ , -: - cool coal .vasserslolTen. liier is there ·. Polyälhvlen in the beirächthclien ί berschul.l available. Coatings cannot be made using the mashing process because of the high melting properties of eggs.

Iu the German patents I 104 17 ^ and! I ^ς . ^Λ · S ¹ JO. the Austrian Palentschrift 22S 4T-. The USA patent ^{specification 2 ι} >(> 2 4Λ4 and in particular the Belgian Palenischrifl dM) 702 v ^ earth mixtures of polymers, in the patent mentioned last also Polväihvlenen. and plasticizers, but all of these mixtures contain an amount of plasticizer of 50 or less than 50 degrees Celsius. These chemicals cannot be applied to the objects to be coated by simply immersing them; you have to apply the LiIm in other, more laborious ways, such as (iials, syringes, presses, etc. .. With such a working method, however, it is not possible to obtain a thin, even and, above all, coherent LiIm / u , the eiiK ■■> effective Schulz.

The original painting is used in the Made in a way that the individual components are continuously mixed at a temperature of about ISO C bis / ur solution of the polyethylene are heated and then the mass to room temperature is cooled.

Examples of common / i: \ alze are substances like: (Kydaiionsinhibitoren. Fatty acid Sal / .e. Corrosion inhibitors, synthetic and natural polymers. Resins. Waxes. Stabilizers and dyes.

Is can also contain pigments and fillers be admitted.

The following example explains the process.

example

In the reactor, JO is ¹ kg DioctyIphthalal sow it ¹ 10 kg of IOI) UlInIcIi and e.rhil / 1 completely dissolves the (ian / e urier continuous mixing at a temperature of about 1X0 C. until the polyethylene. Thereafter, the mass put in special containers and cooled down to room temperature.

The excellent protective wii sound according to the invention Anti-corrosion coatings compared to those according to French patent 957 742 (Example 2) show the following tests:

There were ') steel plates!) with a coating according to the French patent specification (5 "" Polyäthylen and 'J5 "" amorphous paraffin ") or with an invented paraffin Cover (5 "" Polyethylene and ')> "'" DioclvlphthalaU provided. The ilnias were then each cut with a knife and

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the samples in an acid-halline bath ize'ancrl. Already after 4 there was clear corrosion of the eel

After a few days, three test specimens were put into the bath. while he was treated

taken and the surface of the test specimens after Prülplaiien after storage for one day still none

the removal of the coating begins. Corrosion could be determined.

Ls was arrested. that according to the wMcru.ihii- 5 This clearly proves the superiority of the

The French patent specification hehandelien l'ntlhiiüe tindungsiiemärt l ^: ber / üge.

Claims (1)

P a tent ii 11 - ρ r nc h: Alviehb.iTes coating agent on the (irundlagc ■ .on! Ίι | \ Γιΐ! Ι> Ilmi. Wcii.hiiiai.horn ι: nc! Usual /u-.ät/en. Dadur C Ii · ι eke η η / eieh net .il.il> that coating agent as a plasticizer dioctylphiiialate in a menu \ on 'h) his') 5 (iewichisteilen complies).