Thermoplastic elastomer, composition therefor and production process thereof, as well as molded or otherwise formed product obtained from the thermoplastic elastomer
US5525675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Mar 23, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Described is a thermoplastic elastomer comprising (A) 10-90 wt. % of polypropylene having substantially a syndiotactic structure, and (B) 90-10 wt. % of an ethylene-propylene-nonconjugated diene copolymer rubber and/or ethylene-propylene copolymer rubber, said (B) having been partially crosslinked. The elastomer according to the present invention is useful for obtaining formed products, particularly automotive bumper fascias, automotive mud guards and automotive trim skin material, which are excellent not only in flexibility, rubber elasticity and mechanical strength but also in external appearance and touch, and are substantially free from bleeding and fogging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.