Process for producing impact resistant resins
US4487890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1982 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Oct 8, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F279/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing an impact resistant graft polymer which comprises first polymerizing a portion of monomer mixture (b) consisting of specified unsaturated acid, alkyl acrylate having C.sub.1 -C.sub.12 alkyl and other copolymerizable monomer (said portion of monomer mixture (b) does not contain said unsaturated acid), followed by consecutively polymerizing the residual portion of monomer mixture (b) (said residual portion of monomer mixture (b) contains said unsaturated acid) to obtain an acid residue-containing copolymer (B) latex, adding 0.1-5 parts by weight (as weight of solid component) of said acid residue-containing copolymer (B) latex to 100 parts by weight (as weight of solid component) of synthetic rubber (A) latex which has been adjusted to pH 7 or higher to obtain an agglomerated rubber (C) latex, and polymerizing 93-30 parts by weight of a grafting monomer (d) comprising 30% by weight or more of at least one monomer selected from styrene, acrylonitrile and methyl methacrylate in the presence of 7-70 parts by weight (as weight of solid component) of said agglomerated rubber (C) latex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.