Polymeric blends of polyvinyl alcohol copolymers with copolymers of unsaturated monomers
US5362803A · kind A · utility
16Cited by
17References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Jul 16, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers containing a high percentage of vinyl alcohol units, when treated with acid to remove impurities, may be blended with low levels of copolymers of alkyl methacrylates and N-vinyllactams or N-vinylamides, optionally containing copolymerized acid, and processed into sheet, film, fiber and other objects which exhibit a useful balance of barrier and strength properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.