Process for preparing impact resistant polyvinyl aromatics
US4088712A · kind A · utility
1Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Aug 12, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F255/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed an improved bulk-suspension process for polymerizing vinyl aromatic monomers in the presence of an ethylene-propylene-nonconjugated diene-rubber, which comprises using, in the suspension polymerization step, peroxy-carbonic esters as the polymerization initiator. The process of the invention yields products having improved notched impact strength, weatherability and elongation at break combined with a good shear stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.