Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof
US4316982A · kind A · utility
38Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1980 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Apr 23, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B11/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a process for reducing the viscosity of cellulose ethers by reacting a water-soluble cellulose ether with ozone in the presence of water, wherein said cellulose ether which is moist with water and has a dry content of from 20 to 95% by weight is reacted with an ozone/oxygen mixture or with an ozone/air mixture at a temperature of about 0.degree. to 60.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.