Resin composition for automobile bumper
US5001182A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 22, 1988 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Jun 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A resin composition excellent in impact resistance, rigidity and coatability properties, is easily moldable without causing voids and flow marks, and is suitable for the manufacture of automobile bumpers, which has a melt flow rate of not lower than 10 g/10 min. and which comprises: PA1 (A) 60 to 85 parts by weight of a crystalline propylene/ethylene block copolymer component having an ethylene unit content of 10 to 30 mole % and a melt flow rate of 10 to 30 g/10 min. (Comopnent A), PA1 (B) 5 to 20 parts by weight of an non-crystalline ethylene/alpha-olefin random copolymer component having an ethylene unit content of 60 to 85 mole %, a melt flow rate of 0.1 to 5.0 g/10 min and a crystallinity, measured by X-ray, of not more than 15% (Component B), and PA1 (C) 8 to 15 parts by weight of a talc or calcium carbonate component having an average particle size of 0.1 to 5 .mu. (Component C), in which values by the "parts by weight" are selected so as to amount to 100 parts by weight in total.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.