Solvent cast acrylic film
US4584231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1983 |
| Grant date | Apr 22, 1986 |
| Priority date | — |
| Expiry date | Dec 2, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Acrylic films having superior properties are produced by casting a solution comprising an organic solvent and a polymer system of one or more completely polymerized acrylic polymers onto a carrier, removing the solvent thereby forming the film on the carrier, and stripping the film from the carrier. The polymer system comprises at least one polymer prepared by polymerizing monomers of the general formula (I): ##STR1## wherein: R.sub.1 is hydrogen or methyl; and R.sub.2 is straight branched alkyl of about 1-20 carbon atoms, preferably about 1-8 carbon atoms, more preferably 1-4 carbon atoms, and most preferably 1-2 carbon atoms. The polymers are homopolymers, mixed copolymers, and graft copolymers. They may be cross-linked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.