The composition for impregnation of textile cords

 

(57) Abstract:

The invention relates to an impregnating composition for attaching a reinforcing textile material and can be used in tire and rubber industry. The composition according to the invention includes the following components, wt.h. dry matter: latex of copolymer of butadiene containing 0.04 to 0.3 g-EQ nitrile groups and 0.003 - 0.07 g-EQ amide groups per 100 g of polymer, or its combination with carboxyl-containing butadiene latex - 20 - 100, resorcine or alkylresorcinol-formaldehyde resin 14 - 35, optional ammonia in the form of a 25% aqueous solution of 0 - 5, water - 30 - 1200. The invention improves the durability of the textile cords with rubber. table 1.

The invention relates to impregnating compositions, with which the fastening reinforcing textile material to rubber materials in the manufacture of tires and other rubber products, and can be used in tire and rubber industry.

Known laeknaritarar.informe.com compositions with the use of butadiene-2-methyl-5-vinylpyridine (DMIT-10X) and carboxyl-containing butadiene (CDS-1) latex (Shmurak, I. L., Matiukhin S. A., L. Dashevsky, I. mounting Technology Sinn is received by the emulsion copolymerization of butadiene and methacrylic amide acid.

Closest to the proposed invention is an impregnating composition containing latex carboxyl-containing butadiene rubber or latex butadiene-2-methyl-5-vinylpyridine rubber or a combination of these latexes in their mass ratio of 1:1, resorcine-formaldehyde resin, formaldehyde, sodium hydroxide, 25% aqueous ammonia, sucrose, salt of the metal, such as copper sulfate, and water in the following number of components per 100 wt. hours of dry matter of latex (wt.h. on dry substance): resorcine-formaldehyde resin 13 - 20, formaldehyde 4.8V - 8.4V, sodium hydroxide and 0.8 to 8.0 25% aqueous ammonia 0,6 - 3,0, sucrose 10 - 40 specified metal salt of 7 - 18 and water 800 - 1800 (Ed. St. USSR N 1535870, MKI 08 L 9/10, 08 K 13/02, 15.01.90,) prototype.

Known technical solutions do not provide the level of bond strength with rubbers promising types of cords analnogo and polyester that provides the desired performance of the tire carcass. In addition, the release of latex DMIT-10X now ceased, and the latex with methacrylamide groups and impregnating compositions based on it do not have sufficient stability. Introduction in the impregnating composition of food - sucrose is unreasonable is the end of a composition for impregnation of textile cords.

This goal is achieved by the fact that as the basis for impregnating composition used latex of copolymer of butadiene containing 0.04 to 0.3 g-EQ nitrile groups and 0.003 - 0.07 g-EQ amide groups per 100 g of polymer, or its combination with carboxyl-containing butadiene latex SKD-1C. The composition also contains, by weight. hours at 100 wt. including latex, counting on the dry matter: resorcine-formaldehyde or alkylresorcinol-formaldehyde resin 14 - 35, ammonia 0 - 5, water 30 - 1200.

The difference between the claimed impregnating composition is the use of latex with a combination of nitrile and amide groups in the polymer that meets the criterion of "inventive step".

The essence of the invention is illustrated by the following examples.

Example 1 (comparative). Impregnating composition contains, by weight.h. on 100 wt. including latex, counting on the dry matter: latest DMIT-10X (OST 3803136-77) 70, latex SKD-1C (GOST 11604-79) 30, resorcine-formaldehyde resin in the form of a 5% aqueous solution 24, ammonia in the form of a 25% aqueous solution of 1 and water 830.

Example 2 (comparative). Impregnating composition contains, by weight.h. on 100 wt. including latex, counting on the dry matter: latex with methacrylamide groups received the 5% aqueous solution 24, ammonia in the form of a 25% aqueous solution of 1 and water 830.

Example 3 (prototype). Impregnating composition contains, by weight.h. on 100 wt.h. latex, counting on the dry matter: latex DMIT-10X (OST 3803136-77) 50, latex SKD-1C (GOST 11604-79) 50, Novolac resorcine-formaldehyde resin SF-282 16.5, and formaldehyde 6,6, sodium hydroxide 6, copper sulfate 10, sucrose 20, ammonia in the form of a 25% aqueous solution of 1,2 and water 1064.

Example 4. Impregnating composition contains, by weight.h. on 100 wt.h. latex, counting on the dry matter: latex of copolymer of butadiene containing 0.04 g-EQ nitrile groups and 0.07 g-EQ amide groups per 100 g of the polymer obtained by the emulsion copolymerization of (wt.%) 92 butadiene, 2 of Acrylonitrile, 6 amide of methacrylic acid, 100, resorcine-formaldehyde resin in the form of a 7.5% aqueous solution of 35 and water 1200.

Example 5. Impregnating composition contains, by weight.h. on 100 wt.h. latex, counting on the dry matter: latex of copolymer of butadiene containing 0.3 g-EQ nitrile groups and 0.003 g-EQ amide groups per 100 g of the polymer obtained by the emulsion copolymerization of (wt.%) 84,7 butadiene, 15 Acrylonitrile, 0,3 amide of methacrylic acid, 100, resorcine-formaldehyde resin in the form of a 7.5% aqueous solution 14, the ammonia in the form of a 25% aqueous rest the STV: latex of copolymer of butadiene, containing 0.1 g-EQ nitrile groups and 0.02 g-EQ amide groups per 100 g of the polymer obtained by the emulsion copolymerization of (wt.%) 93.3 butadiene, 5 Acrylonitrile, 1,7 amide of methacrylic acid, 100, resorcine-formaldehyde resin in the form of a 5% aqueous solution 24, ammonia in the form of a 25% aqueous solution of 1 and water 830.

Example 7. Impregnating composition contains, by weight.h on 100 wt.h latex, counting on the dry matter: latex of copolymer of butadiene with nitrile and amide groups, for example 6 50, latex SKD-1C (GOST 11604-79) 50, resorcine-formaldehyde resin in the form of a 5% aqueous solution 24, ammonia in the form of a 25% aqueous solution of 1 and water 830.

Example 8. Impregnating composition contains, by weight.h. on 100 wt.h latex, counting on the dry matter: latex of copolymer of butadiene with nitrile and amide groups, for example 6 to 20, latex SKD-1C (GOST 11604-79) 80, resorcine-formaldehyde resin in the form of a 5% aqueous solution 24, ammonia in the form of a 25% aqueous solution of 1 and water 830.

Example 9. Impregnating composition contains, by weight.h. on 100 wt.h. latex, counting on the dry matter: latex of copolymer of butadiene containing 0.1 g-EQ nitrile groups and 0.02 g-EQ amide groups per 100 g of the polymer obtained by the emulsion copolymerizing (wt. %) Hagena resin in the form of a 5% aqueous solution 24, ammonia in the form of a 25% aqueous solution of 1 and water 830.

The compositions of examples 1 to 9 impregnate analny cord 30A thread patterns 188 Tex x 1 x 2 (TC 6-06-04-95) and dried 4 minutes at 135 - 140oC and 40 s at 200 - 210oC. the bond Strength of impregnated cord with rubber-based isoprene rubber SKI-3 is determined by the H-method (GOST 23785.7-89). The obtained data are given in the table.

Example 10 (comparative). Impregnating composition contains, by weight.h. on 100 wt. including latex, counting on the dry matter: latex DMIT-10X (OST 3803136-77) 100, resorcine-formaldehyde resin in a mixture of Novolac resin SF-282 and formaldehyde 31, ammonia in the form of a 25% aqueous solution of 1.5 and a water 740.

Example 11 (comparative). Impregnating composition contains, by weight.h. on 100 wt. including latex, counting on the dry matter: latex with methacrylamide groups obtained by the emulsion copolymerization of butadiene and amide of methacrylic acid, 100, resorcine-formaldehyde resin according to example 10 31, ammonia in the form of a 25% aqueous solution of 1.5 and a water 740.

Example 12 (prototype). Impregnating composition contains, by weight.h. on 100 wt.h. latex, counting on the dry matter: latex DMIT-10X (OST 3803136-77) 100, Novolac resorcine-formaldehyde resin SF-282 20, FD

Example 13. Impregnating composition contains, by weight.h. on 100 wt.h. latex, counting on the dry matter: latex of copolymer of butadiene containing 0.1 g-EQ nitrile groups and 0.02 g-EQ amide groups per 100 g of the polymer obtained by the emulsion polymerization of (wt. %) 93.3 butadiene, 5 Acrylonitrile, 1,7 amide of methacrylic acid, 100, resorcine-formaldehyde resin according to example 10 31, ammonia in the form of a 25% aqueous solution of 1.5 and a water 740.

Example 14. Impregnating composition contains, by weight.h on 100 wt.h. latex, counting on the dry matter: latex of copolymer of butadiene containing 0.3 g-EQ nitrile groups and 0.02 g-EQ amide groups per 100 g of the polymer obtained by the emulsion copolymerization of (wt.%) 83.3 butadiene, 15 Acrylonitrile, 1,7 amide of methacrylic acid, 100, alkylresorcinol-formaldehyde resin in a mixture of Novolac resin SF-PM (13009132 TU 1:95) and formaldehyde 31, ammonia in the form of a 25% aqueous solution of 1.5 and a water 740.

The compositions of examples 10-14 impregnated with polyester cord 20 POINTS from threads 111 Tex x 1 x 3 (TU 6-12-31-03-95) and dried 4 minutes at 135-140oC and 40 s at 180 - 185oC. the bond Strength of impregnated cord with rubber-based isoprene rubber SKI-3 is determined by the H-method (GOST 23785.7-89). The obtained data are given which helps to increase the bond strength between textile cords with rubber on average by 15% in comparison with the known compounds. The increase in the ammonia content and resorcine-formaldehyde resin above the proposed limits is not economically feasible.

The composition for impregnation of textile cords, including latex, formaldehyde resin and water, characterized in that it contains as latex latex of copolymer of butadiene containing 0.04 to 0.3 g-EQ nitrile groups and 0.003 - 0.07 g-EQ amide groups per 100 g of the polymer or its combination with carboxyl-containing butadiene latex as formaldehyde resins, resorcin or alkylresorcinol-formaldehyde resin, optionally, ammonia in the form of a 25% aqueous solution in the following ratio of components, wt.h. dry matter:

The latex of copolymer of butadiene with a specified amount of nitrile and amide groups of 20 - 100

Carboxyl-containing butadiene latex - 0 - 80

Resorcine or alkylresorcinol-formaldehyde resin - 14 - 35

Ammonia in the form of a 25% aqueous solution is 0 to 5

Water - 30 - 1200

 

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