Process for preparing cellulose ethers
US4537958A · kind A · utility
7Cited by
7References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 29, 1984 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Jun 29, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B11/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Non-gelling cellulose ethers are purified by mixing same with a dialdehyde under acidic conditions and under high agitation, forming a slurry of the treated cellulose ether, rapidly transferring the slurry to a filter and then dewatering said slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.