Interpolymer cures of blends comprising halogenated isoolefin/para-alkylstyrene elastomers and unsaturated elastomers
US5656694A · kind A · utility
18Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1995 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | May 3, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/283
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vulcanizable blends containing a halogenated copolymer of a C.sub.4 -C.sub.7 isomonoolefin and para-alkylstyrene mixed with one or more olefinically unsaturated elastomeric polymers are disclosed. Cure is preferably effected using zinc stearate as a curative at levels below about 3.0 phr which gives rise to vulcanizates having selective interpolymer addition of benzylic halogen present in the halogenated copolymer to the double bond of the unsaturated polymer with no significant self curing of the halogenated polymer taking place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.