Flame-retardant injection-molding resin composition
US5116909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Mar 9, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L55/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame-retardant injection-molding resin composition. The composition contains (A) 100 parts by weight of a flame-retardant resin composed of 30% to 80% by weight of styrene resin having a reduced viscosity of methyl-ethyl-ketone soluble portions of 0.2 to 0.55 dl/g in N,N-dimethylformamide at a concentration of 0.3 g/dl at 30.degree. C., and from 20% to 70% by weight of a polyvinyl chloride resin having a polymerization degree of from 400 to 800; and (B) 0.5 to 10 parts by weight of a copolymer of from 3% to 35% by weight of a vinyl cyanide compound, 30% to 97% by weight of an alkyl acrylate and 0% to 67% by weight of a vinyl monomer being copolymerizable with the vinyl cyanide compound and the alkyl acrylate. The flame-retardant injection-molding resin composition provides injection-molded articles of high impact strength and low delamination tendency and has excellent thermal stability, flame resistance and heat stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.