High-impact polystyrene and process for the production thereof
US4153645A · kind A · utility
12Cited by
2References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1978 |
| Grant date | May 8, 1979 |
| Priority date | — |
| Expiry date | Jun 12, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved high-impact polystyrene is disclosed comprising a blend of a polystyrene having a large rubber particle size and a polystyrene having a very fine rubber particle size, combined in such proportions that an improved balance of properties is achieved. Preferably, each polystyrene graft copolymer is prepared by a mass-suspension polymerization process and has a specific degree of grafting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.