RU2001080C1 - Method of preparing coatings for leather-like materials - Google Patents

Description

Butylolysis of Amino-Formaldehyde Resin 7-15

para-toluenesulfonic acid 1.2-1.8

Organic solvent Else

Moreover, both organic and inorganic nature pigment is used as a pigment. Acetobutyrate cellulose is used as acetobutyrate of both domestic (TU 6-05-13-64-90) and imported (Istman, USA) production. As melamine-formaldehyde resins, melamine (K-421-02, K-423-02) and urinary formaldehyde (K-4 11-02) resins are used.

As a result of using this method, a multi-colored fashionable coating is obtained that imitates natural leather with a good impression due to the high coloring power of the ink, the strength of the ink film and the low distortion of the size of the raster dot. The quality of the print was estimated by the size of the distortion of the size of the raster point, which was evaluated using a Biolam microscope. The strength of the ink film is evaluated by the optical density of the ink after abrasion measured on a RD-914 densitometer. Abrasion is carried out on a Tabor-Abraiser device with a helix of Kh 12. The dye strength of the paint is also estimated by the optical density of the paint when diluted with a thinner 1265 (isobutanol, butyl acetate, xylene, isopropanol, methyl ethyl ketone in a weight ratio of 30, respectively: 10: 20: 30: 10) in the ratio of paint: thinner equal to 1: 1. Absorbance was measured on a Macbeth instrument with a blue filter.

Resistance to varnishing is determined according to GOST 26160-84. Eriksen flexural resistance was determined by the method of TsNIIIP1 / 1K. using the device 202 C manufactured by Simatek (Germany).

Example 1. To 100 g of a primer based on a polyester and aminoformaldehyde resin (see table), 1.8, - iac.% Para-toluenesulfonic acid was added and, using a Simatec smooth-shaft primer (Germany), was applied to leather-like rubber (TU 17 of the RSFSR 21-03200-04-89). The primer is applied in 3 lines, drying each layer under the reflector at 50-60 ° C. Next, on the soil drain using a printing machine with a Dakar shaft, printing ink of the following composition is applied, wt.%:

25% cellulose acetate butyrate solution

in butyl acetate 29.8

Butanolized melamine formaldehyde resin 14.9

Polydimethylsiloxane 0.05

Pigments: 6.0

yellow lightfast 232,12

red 5S1.00

titanium dioxide P-022.12

soot P-8030.76

Organic solvent: isobutyl alcohol 9.00

xylene8.00

Ethyl acetate Else (18.3)

Ethyl cellosolve, butyl acetate can also be used as solvents. isopropyl alcohol, cellulose acetate butyrate can be pre-dissolved in ethyl acetate.

Dry paint residue (according to GOST 17537-72) 25.08%

Viscosity according to VZ - 4 (according to GOST 8420-57) 22 s

The degree of grinding according to the device wedge (according to GOST 8420-57) - 10 microns Color - brown

Then, using a smooth shaft machine, a layer of surface varnish is applied (composition, see table) containing 1.2% pa-toluenesulfonic acid. The composite coating is dried under an infrared source with a specific power of 5 kW / m. The curing time to drying degree 3 (according to GOST 19007-73 is 30 s. A finish coating is obtained with a thickness of 30 μm, mixed, with good print quality. The properties of the coating are shown in the table (column 3). Required properties (adhesives according to GOST 15140 -78, elasticity. Solvent resistance m) satisfactory and not listed in the table.

Example 2. The same as in example 1, but the concentration of the components in the range from the specified intervals. The properties of the coating are shown in the table (column 4).

Example 3. The same as in example 1, but the concentration of the components according to the average value from the declared intervals. The properties of the coating are given in the table (column 5).

Example 4. Same as Example 3, but urea-formaldehyde resin is used in the printing ink. The properties of the coating are given in the table (column 6).

Example 5. The same as in example 3, but on the quality of leather-like rubber, a leather jacket of the current production of the Ivanovo artificial sole plant (OST 17-91) is used. The coating properties are shown on the table (column 9).

PRI me R 6. The same as in example 3, but on the composition of the printing ink inorganic pigments are used: yellow iron oxide - 11.29%, red iron oxide - 2.05%, titanium dioxide - 2.19% soot - 0.17%. The color of the coating is brown. The properties of the coating are given in the table (column 7).

PRI me R 7. The same as example 1, but the concentration of the components beyond the minimum.

The coating property is given in the table (column 8),

P r and -1 about r Ya. Go. as in example 1,

;: about the component copy output

for maximum concentration values.

The properties of

(column 9).

(56) Patent GDR M; 210548, cl. C 00 D 3/72. 1904.

Patent CPP No. 92309, cl. C 09 D 3/80, 1907.

USSR copyright certificate M-1183518, cl. C 09 D 175 / OG, 1985.

Handbook of a printing technologist, Torzhok: Book, 1988.Vol. S3, p. 175, 186.

 -type tzO-.i

70.5 I Ch

l FVV | S

13517 Continued

Sales Tables

Table continuation

Claims (1)

1. METHOD FOR PRODUCING COATINGS ON SKIN-LIKE MATERIALS, comprising sequentially applying layers of compositions containing an aminoformaldehyde resin, characterized in that a primer is first applied on the basis of a composition containing, in May,%: Saturated hydroxyl-containing polyethylene diene resin based on adide and glycerol. mol. m. 1480-1700 with a content of hydroxyl groups of 2.0 - 2.3% and carboxyl groups of 0.5-1.0% 11.97-17.34 Butanolized Amino-Formaldehyde Resin 4.41-9.78 Polydimethylsiloxane 0.08 - 0.09 para-toluenesulfonic acid 1.8 - 2.0 Pigment 15.5 - 28.0 Filler 2.5-9.5 Organic solvent. The remainder is then coated with ink. 5 about 5 newer composition containing, wt.%; 25% solution of cellulose acetate butyrate in butyl acetate 29 .8 - 40.3 Butanolized amine-formaldehyde resin 14.9 -16.4 Polydimethylsiloxane 0.05 - 0.07 Pigment 6-10 Organic solvent Else and the last is applied a layer of surface varnish based on a composition containing wt.%: The copolymer of butyl methacrylate, styrene, butyl acrylate, ethylene glycol monomethacrylate ester, a mixture of alkyl methacrylates C - C12 or Ce - Ci mol. m 2500 - 4500 with a content of hydroxyl groups of 0.6-2.5% 29-37 Butanolized amino formaldehyde resin 7-15 para-toluenesulfonic acid 1.2 -1.8 Organic solvent Else