Vinyl chloride resin composition
US6686411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Apr 9, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a vinyl chloride-based resin composition which is highly excellent in weatherability, impact resistance and gloss is provided, which comprises:(A) 100 parts by weight of a vinyl chloride-based resin;(B) from 1 to 30 parts by weight of a graft copolymer which is obtained by graft-polymerizing;(C) from 0.1 to 5 parts by weight of a methyl methacrylate-based two stages polymer which is obtained by, in the presence of a polymer while a solution of 0.1 g of said polymer in 100 ml of chloroform showing a specific viscosity (&eegr;sp) of 0.7 or more at 30° C., comprising from 0 to 50% by weight of a repeating unit derived from methyl methacrylate, while a solution of 0.1 g of said two stages polymer in 100 ml of chloroform showing a specific viscosity of 0.5 or more at 30° C.; and(D) from 1 to 20 parts by weight of calcium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.