Patent · US Expired

Rubber articles consisting of different rubber layers, the production and use thereof

US4720433A · kind A · utility

1Cited by

2References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Heinrich Konigshofen · Bensberg, DE
Zsolt Szentivanyi · Leverkusen, DE

Key dates

Filing date	Apr 14, 1986
Grant date	Jan 19, 1988
Priority date	—
Expiry date	Apr 14, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31928
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Rubber articles consisting of at least two layers consisting of at least two different elastomers, the layers being joined tightly together by sulphur vulcanization, are obtained by using a diene rubber as the first elastomer and a hydrogenated NBR-rubber with a degree of hydrogenation of from 85 to 99.7% by weight as the second elastomer, the hydrogenated NBR-rubber having an acrylonitrile content of from 16 to 49% by weight.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.