SU897817A1 - Varnish-paint composition - Google Patents

Description

one

The invention relates to paints and varnishes, namely, to paint and varnish compositions for the production of coatings for natural and hot drying.

The known composition for coatings of natural and hot drying, containing alkyd resin, pigments, desiccants and solvents. P1 However, coatings based on this composition have a low hardness.

The closest to the present invention is the composition 12, containing pentaphthalic sheave resin, modified with solvent oil and rosin, pigments, desiccant, solvent in the following ratio of components, wt.%

Alkyd resin23-47

Pigments11-35

Dryer 0.1-0.2

SolventExtra

The coatings based on this composition, cured for 1.5 hours at 80 ° C, have a low relative hardness.

The purpose of the invention is to increase the hardness of the coating based on the paint-and-lacquer composition.

The goal is achieved by the fact that a paint and varnish composition comprising an alkyd resin, pigments, a desiccant, a solvent, as an alkyd resin contains the product of the apgolysis of vegetable oils with a mixture of polyhydric alcohol with xylitol-containing odec with a strong number of 1750-1900 mg KOH / g

10 ratio of polyhydric alcohol; Xylenc-containing shade 1.0: 1.5-1.0: 0.8 in the following ratio of components, wt.%: Alkyd resin 23-47

Pigments11-35

ts

Dryer 0.1-0.2

SolventExtra

The alkyd resin is obtained by alcoholysis of vegetable oils with a hydroxyl-containing component followed by the interaction of alcoholysis products with polyosiamic acids or their anhydrides, and a mixture of polyhydric alcohol (glycerol or pentaerythritol) with xylitol containing a mixture of xyloxane containing glycine or pentaerythritol with xylitol containing a mix of polyhydric alcohol (glycerol or pentaerythritol) with xylitol containing a mixture of glycol or glycerol or anhydrides with xylitol containing a mixture of polyhydric alcohols with xylitol containing anhydrous acid, glycol, or anhydrides; :eight.

Xylitol-containing orrei is a waste product of xylitol production and has the following composition, wt%;

Sorbitol21.0-24.0

Xylitol72.0-77.0

Glycerin 1.0-2.5

Erythrit03-0.6

Unidentified

substances with hydroxyl number. 1750-

1900 mg KOH / G.0.5-0.9

The compositions and main indicators of alkyd resin are given in table. one.

Table 1

Indicators and components

Sunflower oil slightly oxidized

Tung oil

Sunflower oil .

Glycerol

Pentazritrit

Xylitol swelling

(100%)

Phthalic anhydride

Maleinovy angisch id.

Rosin

Acid number, mg KOH / g

Solution viscosity

in xylene on VZ-4 at 20 ° C,

Viscosity of 60% solution

in xylene on VZ-4 at 20 ° C,

Titanium dioxide, iron oxide pigments, lead crown, milorn, etc. are used as pigments. For example, lead-manganese NF-1 or NK-1 are used as desiccants. From the solvent Haioiib3yut xylene, solvent, white spirit or mixtures thereof. It is also possible to add targeted additives and fillers.

Paint composition. preliminary dispersion of the calculated. amounts of pigments. on conform

513

513

6.2

6.2

9.1

10.2

18.4

19.6

2.5

SW

10.8

16.7

18.3

108

63

56

use the equipment — up to the required degree of wedge spacing — and add to the next component through the recipe. The composition has a viscosity of 45-65 s by VZ-4 viscometer at 20 ° C. Before use, it is smashed to a viscosity of 22-25 s by VZ-4 with xylene, salt white heat or mixtures thereof.

In tab. 2 shows the composition of the components and computable.

Components

Li Li-lr

23.0

-053

4D)

21.0

To obtain a coating of paint and varnish. composite material is applied to the surface with pneumatic spray, drenching, or eye spray.

table 2

Composition, May. % examples

Famous

47L

32.0

32.0 3fl

13

ZD) 8jO

18

18.5

0.2

13.0

19D

0 avniteli properties of coatings based on the proposed .and known compositions in Table. 3

After thermal aging (60 ° С-120 h)

Bending of the film, mm

After heat aging

(60 ° С-120 h)

The water resistance of the film after testing for 10 hours at 18-20 ° C should not be a change in the appearance, durability of the bending and impact

Claims (2)

Oil resistance of the captivity after testing for 24 hours at 18-20 ° C. There should be no change in appearance; strength at impact and How V5gdao from table. 3, the coatings on the proposed composition possess high hardness and preservation of properties at thermostaresh. Claims Paint-and-lacquer composites, including alkyd resin, pigments, desiccant, solvent, characterized in that. 50 1 50 1 50 1 50 1 Stand Sustained in order to increase the hardness of the coating based on it, as an alkyd resin it contains an alcoholysis product to grow "slurry oils with a mixture of a polyhydric alcohol with xylitol-containing hydroxy extract with 1m number of 1750-1900 mg KOH / G in the ratio of polyatomic sp. xylitol containing swell 1,; 0: 8.0 Yr by the following ratio of components, wt.%: 9897817 Alkyd resin 23-47 Pigments 11-35. Dryer 0,1-0,2 Solvent Else lU Sources of information, received in-house with expert 1. GOST 6465-63 PF-5 enamel. 2. GOST 926-63 PF-133 Enamel.