SU937489A1 - Rubber stock based on unsaturated urethane rubber - Google Patents

Description

(54) RUBBER MIXTURE BASED ON UNSATURATED URETHANE RUBBER

 one .

The invention relates to the rubber industry, in particular to the development of a rubber mixture based on unsaturated urethane rubbers, and can be used in the industry of rubber products.

A known rubber mixture based on unsaturated urethane rubber, including sulfur as a vulcanizing agent in combination with vulcanization accelerators and zinc oxide, as well as complex salts of heterocyclic amines 13.

The disadvantage is the difficulty of synthesizing complex salts and the toxicity of some starting materials.

The closest technical solution is a rubber mixture based on unsaturated urethane rubber, including vulcanization accelerators (altax, captax), fillers (carbon black), sulfur, and zinc oxide.

complex compound cadmium or zinc and mercaptobenzthia.zola (or dibenzthiazolyl disulfide) in a ratio, respectively, mash: 100: 6: 50: 1.5: 5 .: 1 2.

The disadvantage of the known mixture is the low rate of vulcanization of the mixture while maintaining the high strength properties of rubber from it.

The purpose of the invention is to increase the rate of vulcanization of the mixture while maintaining the high strength properties of rubber from it.

The goal is achieved 5 by the fact that the rubber mixture based on unsaturated urethane rubber (SKU-PFL, SKU-PF, SKU-50), including sulfur, accelerators-vulcanization, fillers, and oxide, zinc, additionally contains hexachlor-p-xylene and 1,1,1,5-tetrachloropentane in the following ratio of components, wt.

Unsaturated urethane

100

rubber

Vulcanization AcceleratorsSBTtSa4

EXAMPLE 1-5. As rubbers use unsaturated urethane rubbers on the basis of relative elongation,%

Residual elongation,%

Shore hardness, Elasticity,%

  . . ,

Abrasion resistance, hours As follows from the data presented, the use of hexachloro-p-xyloa and 1,1,1,5-tetrachloropentane as an activator of vulcanization in the presence of zinc oxide allows an increase of about 2.5 times the rate of vulcanization of unsaturated acids while maintaining physico-mechanical properties. How. It can be seen from the presented data that the invention will allow to increase the rate of vulcanization of rubber by about 2.5 times, to expand the range of activators used 1 1 1f5-TeTpaxnopneHTaH also has plasticizing properties and improves the technological properties of mixtures. Formula of the invention. Rubber mixture based on unsaturated urethane rubber, including sulfur, vulcanization accelerators, fillers and zinc oxide, and tl and Psm table. 2

1 (00

1 | 00

350

6

6

I

AT

10 70 27

76 2k

80

75 25

72

2

22

, 0

36.0 125.0 130.0 137.0 that, in order to increase the rate of curing, smash while maintaining the high strength, properties of rubbers from it, it additionally contains or-1-x-x1 lol hexes and 1 1 1 5 tetrachloropentane with the following ratio of components, h.p .: Unsaturated urethane rubber Vulcanization accelerators Fillers Zinc oxide Hexachloro-p-xylene 1. 5 Tetrachloropentane Sources of information taken into account in examination 1, US Patent tf 2921927, Cl, 260-77.5 publish I960. 2. US patent If 2921926, cl. 2ВО-77,5, published. I960 (prototype).

Claims (1)

The rubber mixture based on unsaturated urethane rubber, including sulfur, vulcanization accelerators, fillers and zinc oxide, is such that in order to increase the rate of vulcanization of the mixture while maintaining the high strength and properties of the rubber from it, it additionally contains hexachlor -p-xylene and 1,1,1, 5 ~ tetrachloropentane in the following ratio of components, parts by weight: Unsaturated urethane rubber Vulcanization Accelerators 2-8 Fillers 10-60 Sulfur1’3 Zinc Oxide 1 ~ 5 Hexachlor-p-xylene 0.5’4 1.1 ”1” 5Tetrachloropentane. 2-4 I