Method of production of acrylic resin for film use and an acrylic resin obtained therefrom
US4115480A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F265/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing acrylic resin for use as a film and having reduced tendency to stress whitening and acrylic resins produced by such method. An elastomer is prepared by copolymerizing a cross-linking monomer with a monomer mixture comprising a major proportion of acrylic acid alkyl ester containing 1 to 8 carbon atoms in the alkyl group and having gel content of more than 60%, degree of swelling of less than 15 and mean particle size of 500 to 2000 A. A resin component comprising a major proportion of methacrylic acid alkyl ester containing 1 to 4 carbon atoms in the alkyl group is graft polymerized to a degree of grafting of over 30% in an emulsion of the elastomer to produce the desired resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.