Trimodal ABS compositions having good gloss and reduced gloss sensitivity
US5041498A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Jan 2, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F279/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Rubber modified styrene-acrylonitrile (ABS) resins are provided which have three different types of rubber particles. One particle type is a small, emulsion-produced particle and another is a large emulsion-produced particle. The third particle type is a large, mass-polymerized graft copolymer particle which comprisees as its rubbery substrate a diene polymer ingredient containing at least about 80 weight percent of a polymerized diene monomer and which constitutes no more than about 30 weight percent of the total rubber components contained within the compositions of interest. The resulting compositions have very high gloss characteristics and reduced gloss sensitivity to molding condition variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.