Vinyl chloride polymer composition
US4690977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1986 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Aug 20, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A vinyl chloride polymer composition comprising PA0 (A) 3 to 50 parts by weight of a grafted copolymer and PA0 (B) 97 to 50 parts by weight of a vinyl chloride polymer, a total amount of the copolymer (A) and the polymer (B) being 100 parts by weight; the grafted copolymer (A) comprising PA0 (1) 50 to 80 parts by weight of a rubber copolymer and PA0 (2) 50 to 20 parts by weight of a grafting monomer, a total amount of the component (1) and the component (2) being 100 parts by weight; the component (1) comprising PA0 (a) 60 to 90% by weight of the rubber copolymer comprising 99 to 85% by weight of alkyl acrylate having an alkyl group of 2 to 8 carbon atoms, 1 to 15% by weight of conjugated diolefin and 0 to 5% by weight of polyfunctional cross-linking agent and PA0 (b) 40 to 10% by weight of a surface rubber copolymer comprising 98 to 70% by weight of alkyl acrylate having an alkyl group of 2 to 8 carbon atoms, 2 to 30% by weight of conjugated diolefin and 0 to 5% by weight of polyfunctional cross-linking agent and being obtained by polymerizing the component (a) to give a core rubber copolymer and then polymerizing the surface rubber copolymer component (b) in the presence of the c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.