Nonbiodegradable polymers
US4035457A · kind A · utility
4Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 1975 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | May 1, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B3/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A new composition, cellulose acetate-chlorobutyrate pyridinium salt, which has superior biodegradation resistance and polymer membrane forming characteristics and related compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.