Preparation of gels derived from carboxymethyl cellulose alkali metal salt
US8633254B2 · kind B2 · utility
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3References
16Claims
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Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Dec 29, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2301/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of preparing a gel from carboxymethyl cellulose alkali metal salt, which is an anionic cellulose derivative, by using acid or acid solution. To increase the strength and the elasticity of a gel, a water-insoluble metal compound or organic reinforcement is added when mixing. The obtained gel is one of environmentally friendly type gels because the raw material is derived from plant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.