Polypropylene resin compositions, coating process for moldings thereof and its coated moldings
US5324771A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 28, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/035
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A coated molded article having good adhesion to a coating film and resistance to gasohol as well as excellent appearance can be obtained by applying a primer coating to the surface of a molded article or irradiating the surface with plasma without applying any washing-treatment with a halogen atom-containing organic solvent and then applying a top coat onto the article, if the molded article is formed from a resin composition comprising (A)a polypropylene; (B)a specific ethylene-propylene-diene terpolymer rubber; (C) a specific ethylene-propylene copolymer rubber; and (D) a specific polyhydroxypolyolefin, the amounts of these components (A) to (D) satisfying the following relations: EQU 10.ltoreq.[(B)+(C)]/[(A)+(B)+(C)].ltoreq.60 (% by weight) EQU 1.ltoreq.(C)/[(B)+(C)].ltoreq.50 (% by weight) EQU 0.5.ltoreq.(D)/[(A)+(B)+(C)+(D)].ltoreq.10 (% by weight)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.