Rubber composition, laminated body of rubber composition and metal, and vulcanized rubber product

Patent metadata

Field	Value
Publication number	US-9932464-B2
Application number	US-201715619319-A
Country	US
Kind code	B2
Filing date	Jun 9, 2017
Priority date	May 19, 2014
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

A rubber composition of the present technology comprises: from 0.5 parts by mass to 1.5 parts by mass of sulfur, from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator, from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator, from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, and from 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator per 100 parts by mass of a diene polymer containing a chloroprene rubber.

First claim

The invention claimed is:

1. A rubber composition comprising:
from 0.5 parts by mass to 1.5 parts by mass of sulfur,
from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator,
from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator,
from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, and
from 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator,
per 100 parts by mass of a diene polymer containing a chloroprene rubber and a styrene butadiene rubber,
wherein, in the diene polymer, a content of the chloroprene rubber is not less than 40 mass %, and a content of the styrene butadiene rubber is not greater 60 mass %.

2. A vulcanized rubber product comprising the rubber composition described in claim 1 .

3. The rubber composition according to claim 1 , wherein, the compounded amount of the diene polymer is from 20 mass % to 70 mass % relative to the total amount of the rubber composition.

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Miyamoto Tomoaki

Classifications

• C08L11/00 Primary

  Compositions of homopolymers or copolymers of chloroprene · CPC title

• B32B15/04

  comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)} · CPC title

• B32B2307/306

  Resistant to heat · CPC title

• C08L19/003

  Precrosslinked rubber; Scrap rubber; Used vulcanised rubber · CPC title

• B32B1/08

  Tubular products · CPC title