Cold water soluble films and film forming compositions
US5272191A · kind A · utility
74Cited by
14References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1991 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Aug 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L1/286
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The rate of disintegration in cold water of water soluble packaging films is improved by incorporating into a film forming polymer composition, to form a dry blend or aqueous dispersion, a substantially water insoluble cellulose material prepared from alkali metal salts of carboxy(lower alkyl) cellulose or hydroxy(lower alkyl) cellulose. The increased disintegration is achieved without loss of film stability and, in some cases, the film stability is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.