Water soluble film
US5102950A · kind A · utility
12Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1991 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Jul 29, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J5/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are water soluble films comprising a modified polyvinyl alcohol containing 2-pyrrolidone ring. The films have excellent water solubility, which can be maintained over a long period of time and under the condition of being contacted with an alkaline or acid substance, and at the same time have an appropriate touch and flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.