Process for producing a thermoplastic resin composition and a graft copolymer
US5418289A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | May 28, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic resin composition comprising 10 to 60 parts by weight off a maleimide series graft copolymer (A) and 90 to 40 parts by weight of a hard polymer (B) described below: PA1 (A) a maleimide series graft series copolymer obtained by emulsion graft copolymerization of a specific monomer mixture to a crosslinked latex containing an ethylene-propylene-non-conjugated diene copolymer and PA1 (B) a hard polymer containing a mixture of specific monomers. A process for producing a maleimide series graft copolymer, in which a monomer mixture and a redox type initiator are added to the polymerization system for more than one hour and the pH value of the aqueous polymerization phase is kept at 10.0-7.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.