Copolymers of vinyl acetate and poly(alkyleneoxy) acrylates
US4708999A · kind A · utility
7Cited by
13References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Aug 8, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A substantially homogeneous random vinyl acetate copolymer comprising the following general structure: ##STR1## wherein R is hydrogen or methyl; PA1 R.sup.1 is hydrogen or methyl; PA1 R.sup.2 is hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.6 -C.sub.20 aryl or C.sub.7 -C.sub.30 alkylaryl; PA1 n is a number from 1-1,000; PA1 y is 50-99.999 mole%; and PA1 z is 0.001-50 mole%. The vinyl acetate copolymer is hydrolyzed to provide a substantially random homogeneous vinyl alcohol copolymer that can be thermoplastically processed into shaped articles possessing good gas barrier properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.