SU1219625A1 - Compound for coatings - Google Patents

Description

The invention relates to a paint and varnish industry, in particular, to compositions for coating rubber products with subsequent vulcanization, and can be used for applying a color print on rubber footwear by screen printing.

The purpose of the invention is the possibility of applying the composition by screen printing, improving the uniformity of color and hiding power.

The composition is prepared as follows.

Mixing komnoneitov in accordance with the formulation of the composition and dispersion of pigments carried out on rollers. First, mix the styrene-thermoplastic elastomer DST-30 with polyvigric chloride resin on the rolls, then 1 water for dibutyl phthalate, pigments and filler (lithopone). The rolls are held for 20 mni, then the plastic is removed from the rolls on a thin gap. The composition thus obtained is cut into small pieces (approximately 5x10 mm), placed in a container and filled with a mixture of gasoline, ethyl acetate, cyclohexanone and 1,2,3,4-tetragndronaphtaliya. After 1 day, the composition is stirred until a uniform consistency is obtained and the rest of the calculated solvent quantity is added. The working viscosity of the composition according to BZ-4 is 60 ± 5 s, the degree of chafing of the paint according to the method of 1 μm 10 μm.

The prepared composition is used to apply a colored imprint on pevulkash-gzirovannye rubber products using the stencil method. On a special table, decomposing uncured stockpiles (the sounds of shoes and in a certain position fix the printed form. On the printed form, panos m op.66252

a certain amount of the composition of the same color, which with the help of rubber | the squeegee is forced through the printing plates. Then, using the same method, the next imprint of a different color composition is applied to the rubber billet to obtain a specific pattern.

The drying parameters of the individual layers 10 of the composition (first and subsequent, depending on the number of colors in the drawing) are as follows: drying time is not more than 3 minutes, drying temperature C. Shoes with varnish 15 applied and composition vulcanized according to the following mode;

When vozna- When steam vapor phase

20 temperature, C 1440 148 pressure,

MPa 0,24-0,26 0,24-0,26 time, 25 min 50 ± D 30 ± 1

Total curing time 80tl min. The divinyl styrene thermoplastic elastomer DST-30 introduced into the composition is a film material, poly-30 vinyl chloride resin E-6250 - white powder, titanium dioxide PI and pigment PI - white powder, phthalocyanine pigment - powder, Kpaciam pigment — iron oxide — pyroxyfine, white powder; shock, lithopone dry, dibutyl phthalate, cyclohexanone, 1,2,3,4-tetrahydronaphthalene, gasoline BR-1, ethyl acetate are also introduced.

Examples of the proposed composition are given in Table I.

Table 2 shows the physico-mechanical properties for the known and proposed coating compositions.

6, 25 5.0

0.63 0.61 3.13 3.13

1.5 1.0 2.0 10.5

6.25

Table 1

5.81

0.87 1.16 2.50 3.31

6.42

1.92 1.28 6.42 1.28

5.78

2.3

2.3

3.0

 8.6

5.81

Claims (2)

COMPOSITION FOR COATINGS, including divinyl styrene thermoplastic elastomer, pigment, filler, gasoline and ethyl acetate, characterized in that, in order to ensure the possibility of applying the composition by screen printing, to increase the uniformity of color and hiding power, it contains lithium-pon and additionally polyvinyl chloride resin, 1,2,3,4-tetrahydronaphthalene, cyclohexanone and dibutyl phthalate in the following ratio of components, wt.%: Divinyl styrene thermoplastic elastomer Polyvinyl chloride resin Pigment Lithopone Dibutylft a'm Cyclohexanone 1, 2,3,4-tetrahydronaphthalene Gasoline Ethyl acetate 5.00-6.42 -0.87-1.92 3.2-10.5 2.00-6.42 1,00-1,28 _th 5.76-6.00 8 25.0-26.0 1 1.56-12.52 Rest SUn. 1219625>