SU825569A1 - Composition for removing paint-varnish coatings - Google Patents

Description

This composition also has insufficient efficacy in removing paint coatings.

The purpose of the invention is to increase the effectiveness of the composition for removing paintwork.

The goal is achieved by the fact that the composition for removing paint coatings, including methylene chloride, ethyl alcohol, organic acid containing 1-3 carbon atoms and non-ionic emulsifier, additionally contains a dioxane selected from the group: 4-methyl-4-phenyl-1,3 -dioxane, 4-pheny1, 3-dioxane, 4,4-dimethyl-1,3-dioxane, 5-chloromethyl-5-morpholine-2-alkyl1, 3-dioxane with 1-5 carbon atoms in alkyl, with the following ratio components, mass:

Methylene chloride-100

Ethyl alcohol5-25

Organic acid 1-10 Non-ionic emulsion,

gator0.5-5

Dioxane derivative1-10

The following is a characteristic of 1,3-dioxane derivatives.

In the proposed composition, water can be introduced in an amount of 10-15 mass.h to reduce volatility, while the water is located in the upper layer, forming a water seal.

In order to remove coatings from large-sized products, a thickener may be added to the composition in the amount of 1030 mass parts.

To obtain the composition, the 1,3-dioxane derivative is dissolved in ethyl alcohol at 20 ± 2 ° C with stirring, then Methylene chloride, emulsifier and acid are added to the reactor

y-y V 4f. V

Application of a thickened composition

on large-sized products the implementation of the name of the derivative .1,3-dioxane

4-Methyl-4-fensh1-1,3-dioxane (UNIST-11)

4-Phenyl-1,3-dioxane (UNIST-12)

4,4-Dimethyl-1,3-dioxane (UNIST-15)

5-ChloEmethyl-5-morpholine-alkyl-1, 3-dioxane with 1-5 C atoms in the alkyl (UNIST-16)

is a spatula or brush; otherwise, the liquid composition is used in baths.

As an emulsifier, various non-ionic with surfactants can be used: ethoxylated alkylphenols (preparations OP-7 and OP-10), ethoxylated higher alcohols (sintanol DS-10), hydroxylated higher acids

Q (stearox-6), polyethylene esters of esters of fatty acids and polyatomic alcohols (preparation PP-10 polyethylene ester of pentoerythritol stearate) and others.

Examples of composition are given in

5 table.2.

The resulting compositions are used to remove paint coatings based on polyacrylic (soil AK0 070), epoxy-polyimide (EP-140 enamel), melamine-formaldehyde (ML-165 enamel), griftale (GF-020 primer), polyvinyl acetal (VL02), (epoxy EP -755), perchlorvis nilovye (enamel HV-53), phenolphylmaldehyde (primer FL-OZK) and penhaphthalic (enamel PF-218) resins and other binders,

The results are shown in table 3.

0c table 4 shows the comparative

data on the toxicity of the composition according to the invention and the known composition.; Toxicity assessment was carried out

calculated by the maximum allowable concentrations in the air of the working area (MAC of the river).

As can be seen from the data given in the tables, the proposed composition for

The removal of paintwork has a higher efficacy while maintaining incombustibility and a lower level of toxicity.

Table 1

I ::: I :::: L ::

Ls

PA

102 1.0872 1.5236 42.3 112 1.0763 1.5305 109 1.0335 1.4938

1,0935 1,5873

Component Name

TX LCLT ± LJTI.TiIi 100 100 100 Methylene chloride 11 5 25 Ethyl alcohol Acid: Muravina Uxusna Propnonova Preparate OP-7 Sintanol DS-10 about Stearox-b Preparant PP-10 UNIST-11 UNIST-12 UNIST-15 UNIST-11-UNIST-11 UNIST-15 UNIST-11-UNIST-11 UNIST-UNIST-11 (paste of hydrogenated castor oil modified with polyamide resin and chloroparaffin or betonite and chloroparaffin, taken in a ratio of 1; 1)

The quantitative content of the components, mash 0.5 5, 1.0 10 00 100 100 100 100 20 18 20 20 20 10 10 2.0 2.8 2.9 4, 0 40, 0 The formula of the invention

A composition for removing paintwork, including methylene chloride, ethyl alcohol, organic acid containing 1–3 atsma of carbon and a non-ionic emulsifier, which also has a dioxane derivative in order to increase its effectiveness. selected from the group: 4-methyl-4-feiyl-, 3-dioxane, 4-phenyl-1,3-dioxane, 4,4-dimethyl-1,3-dioxane, 5-chloromethyl-5-morpholin-2- alksh1-1, 3-diok. San with 1-5 carbon atoms in, PEM the following ratio of mass components:

Methylene chloride 100 Ethyl alcohol 5-25 Organic acid 1-10 Non-ionic emulsifier 0, 5g-5 Dioxane derivative 1-10

Sources of information taken into account in the examination

1. Composition for removing paint and varnish coating AFT-1, TU-b-10-120271.

2. Authors certificate of the USSR 517618, CP. From 09 D 9/04, 1974.

3 .. Patent Poland 59061, cl. From 09 D to publish. 1970 (prototype).

Claims (1)

Claim Composition for removing paint coatings, including methylene chloride, ethyl alcohol, organic acid 25 containing 1-3 carbon atoms and a nonionic emulsifier ', characterized in that, in order to increase the effectiveness of the action, it additionally contains a derivative of dioxane, θ sana, selected from groups: 4-methyl-4 ~ phenyl-1,3-dioxane, 4-phenyl-1,3-dioxane, 4,4-dimethyl-1,3-dioxane, 5-chloromethyl-5-morpholin-2 -apkyl-1,3-dioxane with 1-5 carbon atoms in adkil,, with the following ratio of components ³³ wt.h: Methylene chloride 100 Ethyl alcohol 5-25 Organic acid 1-10 Nonionic emulsifier 0.5 g 5 Dioxane derivative 1-10