SU1666216A1 - Method for production polyester coating - Google Patents

Abstract

This invention relates to methods for producing decorative coatings based on polyester lacquers. The invention allows to increase the curing speed, hardness and gloss of the coating, to reduce the dose of the stream of accelerated electrons. This is due to the fact that in the process of obtaining a polyester coating by impregnating texture paper with polyester varnish, applying it to wood-shaving or asbestos-cement slabs, applying polyethylene terephthalate film and curing by a stream of accelerated electrons on a moving conveyor, the polyester film is impregnated with a mixture of polyester film - 284 based on unsaturated oligoethylene glycol fumarate resin and N, N-dimethyl-N-benzyl-N-methacryloylammonium chloride with their ratio, wt.%, (98 - 99.88) :( 0.12 - 2.0), and curing The flow of accelerated electrons with a dose of 8 Mrad at a speed of movement of the conveyor of 4.5 - 5 m / min. 2 tab.

Description

The invention relates to the production of decorative coatings in the manufacture of furniture, radio equipment, and finishing building materials.

The purpose of the invention is to increase the curing speed, hardness and gloss of coatings and reduce the dose of accelerated electrons.

As a polyester lacquer used polyester lacquer PE-284 B (TU6-10-17-15-1579) of the following composition, wt.%:

Ethylene glycol24,2-13,1

Trimethylolpropane diallyl ether 25.6-13.8

Fumaric acid 32,5-17,5

Triethylene glycol dimethyl ether 27, 6

Triethylene glycol phthalate dimethacrylate18, 4

M, N-dimethyl-N-benzyl-M-metg phylayl ammonium chloride has the following structural formula

(Lpz

SI,

21

SNG with

Ag. i

co

s & 0-sn2-ci2 C A I

; N

i t

se

sn 0 ъ

4.78% C 112.8%

13 h

elemental composition:

From 65.9% H 8.00% N., .-, -, - .......

Values of chemical shifts of C NiN-dimethyl-L-benzyl-M-methacryloylammonium of hporida

AiJliflCi Cz Сз СА Cs Се Се Се

128,4136,118.0 168.9 59.6 62.4 51.6 61.7

EXAMPLE 1 The preparation of a lacquer and curing is carried out as follows: 99.88% by weight of PE-284B are mixed at room temperature with 0.12% by weight of N, N-dimethyl-M-benzyl-M-methacryloyl monium chloride before homogenization, then a chipboard or asbestos-cement surface is applied to the pre-primed surface, texture paper is impregnated with varnish, polyterephthalate film is immediately rolled, curing is carried out with a stream of accelerated electrons with a dose of 8 Mrad at a speed of 4.5 m / min. Thereafter, the polyterephthalate film is easily removed from the cured lacquer surface.

PRI me R 2. PE-284 B lacquer, 99.75 May,% is mixed with 0.25 wt% M, M-dimethyl-N-benzyl-M-methacryloylammonium chloride at room temperature until homogenization, then also as in Example 1, onto the primed surface texture paper impregnated with lacquer is applied, curing is covered with polytetraphthalate film and accelerated electron flow with a dose of 8 Mrad with a movement speed of 4.8 m / min.

Example 3. PE-284B varnish 98.0 wt.% Is mixed with 2.0 wt.% M, H-dimethyl-K1-

ten

15

20

25

thirty

35

benzyl-M-metacoyloyl monium chloride at room temperature until homogenization, then also, as in example 1, texture paper impregnated with varnish is applied to the primed surface, a polyethylene film is cured by a stream of accelerated electrons with a dose of 8 Mrad with a displacement rate of 5.0 m / min

Impregnation varnish compositions, curing conditions and coating properties are presented in Tables 1 and 2.

Claims (1)

The method of obtaining a polyester coating by impregnating textural paper with a polyester varnish, applying it to wood chipboard or asbestos-cement slabs, applying a polyethylene terephthalate film and then curing it with a stream of accelerated electrons on a moving conveyor, characterized in that, in order to increase the speed of hardening, electrons are hardened. and gloss coatings and reduce accelerated electrons, as the polyester varnish use a mixture of polyester varnish PE-284 based on unsaturated oligoethylene glycol umaratnoy resin and N, N-dimethyl-N-benzyl-N-metakriloilam- moniyhlorida at a ratio, in weight%. (98-99.88) :( 0.12-2.0) and curing is carried out at a conveyor movement speed of 4.5-5 m / min with a dose of accelerated electrons of 8 Mrad. Polyester Impregnation Compositions Curing Conditions and Coating Properties Table 1 table 2 Continued table. 2