High impact polystyrene composition
US4145376A · kind A · utility
9Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1976 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Oct 20, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L21/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising a mixture of a styrene polymer, a rubbery dienic polymer and a sequenced copolymer of styrene and a diene, the total styrene polymer content which includes the free polystyrene and the polystyrene present in the sequenced copolymer is between 50 and 99% by weight of the composition, the total rubber content, which include the rubbery dienic polymer and the dienic polymer present in the sequenced copolymer, is between 1 and 50% by weight of the composition, the amount of sequenced copolymer being such as to bring to the composition from 3 to 90% by weight of the total rubber in the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.