Composition of a polyphenylene ether, a styrene resin, a precompounded polymer system and a block copolymer of a vinyl aromatic compound and an olefinic elastomer
US4145377A · kind A · utility
25Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1976 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Dec 3, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There are provided compositions comprising (a) a polyphenylene ether; (b) a polystyrene resin; (c) a precompounded polymer system comprising an olefinic resin and an elastomeric block copolymer alone, or in further combination with a dispersing agent; and (d) an elastomeric block copolymer resin. The use of (c) and (d) together provides, surprisingly, higher impact strength over the entire composition range of (a) to (b), with lower amounts of (c) and (d), based on the total resinous components of the system, being required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.