Modified nonionic cellulose ethers
US4228277A · kind A · utility
158Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Feb 12, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B11/193
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C.sub.10 to C.sub.24 long chain alkyl group in an amount between about 0.2% by weight and the amount which makes them less than 1% soluble in water. Hydroxyethyl cellulose is a preferred water-soluble cellulose ether for modification according to the invention. These products exhibit substantially improved viscosifying effect compared to their unmodified cellulose ether counterparts and also exhibit some surface activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.