Ethylene propylene copolymer composition and process for producing vulcanizates therefor
US7005467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Jan 30, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/013
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer composition useful to produce a vulcanizate having improved hot air aging properties is described. The polymer composition includes two components. The first component is a polymer having a main polymer chain derived from: (i) at least about 30% by weight of a first monomer which introduces at least one of a secondary carbon and a tertiary carbon to the backbone, and (ii) from 0 to about 70% by weight of at least one other monomer. The second component is a salt of a strong base and a weak acid, the salt comprising a metal selected from Group I of the Periodic Table of Elements. The polymer compositions may further comprise optional ingredients such as one or more of: a vulcanization system, a polycarbodiimide and a filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.