Patent · US Expired

Low molecular weight copolymers and covulcanizates produced therefrom

US4829128A · kind A · utility

5Cited by

3References

2Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hartmuth Buding · Titz, DE
Zsolt Szentivanyi · Leverkusen, DE
Joachim Thormer · Leverkusen, DE

Key dates

Filing date	Oct 24, 1986
Grant date	May 9, 1989
Priority date	—
Expiry date	Oct 24, 2006

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Statistical copolymers of from 85 to 52% by weight of a conjugated diene, from 15 to 48% by weight of at least one unsaturated nitrile and from 0 to 10% by weight of further monomers, copolymerizable with diene and nitrile, which have a molecular weight M.sub.n of from 0.5 to 30 kg/mol and a degree of hydrogenation of the double bonds of greater than 80%, give nitrile rubbers, which are mixed and colvulcanized with these copolymers, an increased ozone resistance.

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