SU891728A1 - Coating composition - Google Patents

Description

(54) COATING COMPOSITION

one

FIELD OF THE INVENTION The invention relates to the paint industry, in particular to the production of weather-resistant paints and varnishes with high decorative properties.

A known composition for a coating based on polyvinyl chloride chloro, bath resin, alkyd resin, plasticizers, pigments and solvents (enamel XB-1100) 1..

However, coatings based on this enamel have a low gloss (17% in FB-2) and do not retain decorative materials (discoloration, bronzing, haze, gravel) when used in the atmosphere.

Closest to the invention in its technical essence and the achieved result is a coating composition comprising chlorine-containing film-forming, alkyd-acrylic resin, plasticizer, stabilizer, pigments, fillers and organic solvents 2.

However, coatings based on this enamel have a low gloss (37 according to FB-2) and high holding. Therefore, it cannot be used as weather resistant.

coatings operated in the atmosphere of chemical plants.

The purpose of the invention is to increase the gloss of the coating and reduce its gr.

This goal is achieved in that the coating composition comprising a chlorine-containing film-forming agent, an alkyd-acrylic resin, a plasticizer, a stabilizer, pigments, fillers, and organic solvents contains as chlorine-containing film-forming 5000150000 chlorine content of 63-67 %, and as an alkyd-acrylic resin product copolymerization alkyd resin based on castor and / or sunflower oil, glycerin and

20 phthalic anhydride with a fat content of 53% and methyl- and butyl methacrylate in a 1: 1 ratio in the following ratio of components, wt.%:

Chlorinated Pau 25

12,50-16,50 polyethylene

Alkyd acrylic

6.25-8.25

resin

3.00-5.25

Plasticizer

0.75-1.32

Stabilizer

thirty

11.00-20.00

Pigments

Fillers. 3.68-5.00

Organic

solvents Else.

According to the invention, chlorinated polyethylene (HPE) is used, which is obtained by chlorinating polyethylene in carbon tetrachloride at elevated temperature and elevated pressure with dispersed carbon tetrachloride.

HPE indicators;

Loose white powder appearance.

Viscosity

20% solution in toluene

at, cp

9-22

Content

63-67

chlorine,%

Content

No more than 0.05

ash%

Content Not more than 0.3

moisture%

Content Not more than 0.005

chlorine,%

Molecule

5,000-10,000.

weight

Chloroparaffin CP-470, dibutyl phthalate, tricresyl phosphate, etc. are used as a plasticizer. Epoxidized soybean or sunflower oil is used as a stabilizer.

Red iron oxide pigment, titanium dioxide, carbon black, zinc white, etc. are used as pigments. Talc and bentonite are used as fillers.

From solvents use xylene, solvent, toluene, acetone butyl acetate.

The composition is prepared as follows.

Preparation of pigment paste. Pigment paste is prepared in a bead mill. Chlorinated polyethylene solution, solvent and pigments are loaded. Dispersing is carried out to a degree of dispersion of not more than Z.km.

Preparation of the composition. A prescription amount of a solution of chlorinated polyethylene is loaded into the mixer I, pigment paste and solvent are added with stirring. After a homogeneous composition is obtained, the alkyd-acrylic resin, the plasticizer and the stabilizer are added. Stirring is carried out until a homogeneous paint / varnish composition is obtained.

The controls are conducted according to the content of non-volatile substances (40 ± 2%) and viscosity (30-80С according to VZ-4 at: 20 + 0.5 ° С).

The paint-and-lacquer composition is applied by pneumatic spraying onto body steel pre-primed with HS-059 primer. Complex coating thickness not less than 70 microns

The proposed coating compositions are given in Table. 1, the physicomechanical and protective properties of the coatings are given in table. 2

Claims (2)

The coatings on the basis of the composition of the invention have good physical and mechanical properties, good gloss retains a stable decorative appearance throughout the year, practically does not change colors and gloss and have a slight amount of retention. Claims A coating composition comprising a chlorine-containing film-forming apical-acrylic resin, a plasticizer, a stabilizer, pigments, fillers and organic solvents, characterized in that, in order to increase the gloss of the coating and; to reduce its holding capacity, it contains chlorine-containing film-forming chlorinated polyethylene with a molecular weight of 5,000 10,000 and a chlorine content of 63-67%, and as an alkyd-acrylic resin, a product of copolymerization of an alkyd resin with a fat content of 53% and methyl and butyl methacryl that in a 1: 1 ratio in the following ratio of components, May. %: 14 Chlorinated polyethylene 12.50-16-50 Alkyd-acrylic resin 6.25-8.25 Plasticizer 3.00-5.25 Stabilizer 0.75-1.32 Gshgmenty 11.00-20 QO Fillers 3.68 -5,00 Organic solvents Else. .. Sources of information, ntye taken into account in the examination 1. Golberg M. m. Paint coating materials. M. Chem. 2, s. 221. 2. Enamels XC-119 and XC-119E, T 21824-76 (prototype).