Sulfur-modified chloroprene rubber composition, vulcanized product, molded article using said vulcanized product and method for producing sulfur-modified chloroprene rubber composition

A technology of chloroprene rubber and chloroprene, applied to sulfur-modified chloroprene rubber compositions and vulcanized products, molded articles using the vulcanized compounds, and sulfur-modified chloroprene rubber compositions In the manufacturing field, it achieves the effect of reducing heat generation, compression set and excellent wear resistance
CN111372986AActive Publication Date: 2020-07-03DENKA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DENKA CO LTD
Publication Date
2020-07-03

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Abstract

Provided is a technology for producing a sulfur-modified chloroprene rubber which has excellent compression set and excellent wear resistance, while being reduced in heat generation. Provided is a sulfur-modified chloroprene rubber composition that is obtained by having a sulfur-modified chloroprene rubber, which contains at least a sulfur-modified chloroprene polymer and an emulsifying agent, contain a sulfenamide which may have an arbitrary substituent in an amount of 0.0005-0.01 part by mass per 100 parts by mass of the sulfur-modified chloroprene rubber.
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Description

Background technique

[0001] Sulfur-modified chloroprene rubber exerts its excellent dynamic characteristics and is widely used as a material for general industrial transmission belts or conveyor belts, air springs for automobiles, anti-vibration rubber, and sponge products. Since these products undergo repeated deformation-recovery due to dynamic stress, there are problems such as deterioration of the rubber itself due to heat generation or shortening of product life. Therefore, development of sulfur-modified chloroprene rubber with reduced heat generation has been strongly desired.

[0002] As a technique for reducing the exothermic properties of rubber, there is known a low exothermic rubber composition containing an elastomer such as acrylonitrile-butadiene copolymer rubber that can be crosslinked by an organic peroxide-based crosslinking agent, α , metal salt of β-ethylenically unsaturated carboxylic acid, BET specific surface area is 25m 2 Magnesium oxide and organic pe...

Claims

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