Heat-foamable olefinic resin composition and process for production of olefinic resin foam from said composition
US4510031A · kind A · utility
93Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1984 |
| Grant date | Apr 9, 1985 |
| Priority date | — |
| Expiry date | Apr 25, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/915
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A heat-foamable olefinic resin composition comprising PA0 (a) an ethylenic polymer, PA0 (b) a propylene/alpha-olefin copolymer having a melting point of 130.degree. to 160.degree. C., PA0 (c) a propylene polymer having a melting point at least 10.degree. C. higher than the melting point of the propylene/alpha-olefin copolymer, and PA0 (d) a blowing agent, and optionally PA0 (e) a crosslinking agent and/or a crosslinking promoting agent; and PA0 a process for producing an olefinic resin foam comprising crosslinking and heat-foaming the aforesaid heat-foamable olefinic resin composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.