Aqueous solution of cellulose ether acetate
US10961355B2 · kind B2 · utility
0Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2017 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Nov 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/54
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An aqueous composition comprising a cellulose ether acetate being at least partially dissolved in an aqueous liquid is produced in a process, wherein an aqueous liquid is mixed with a cellulose ether acetate having a degree of substitution of acetyl groups, DSAc, of from 0.05 to 0.75 and the temperature of the mixture of the cellulose ether acetate and the aqueous liquid is set to less than 10 C to at least partially dissolve the cellulose ether acetate in the aqueous liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.