Polypropylene resin compositions and moldings thereof
US4211690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Aug 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides polypropylene resin compositions of excellent gloss, impact resistance and rigidity comprising (A) 100 parts by weight of propylene homopolymer having an intrinsic viscosity in tetraline at 135.degree. C. of no less than 1.9, (B) 40-150 parts by weight of ethylene/propylene copolymer having an intrinsic viscosity in tetralin at 135.degree. C. of 1.4-1.7 and an ethylene content of 2-15 molar % and (C) 40-150 parts by weight of ethylene/propylene copolymer having an intrinsic viscosity in tetralin at 135.degree. C. of no less than 1.9 and an ethylene content of 2-20 molar % or comprising above components (A) through (C) and (D) 5-120 parts by weight of a powdery inorganic filler of an average particle diameter of no more than 0.8 .mu.m, and moldings, i.e. molded articles, prepared from these compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.