Process for the control of carboxyl end groups in fiber-forming polyesters
US4016142A · kind A · utility
21Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1966 |
| Grant date | Apr 5, 1977 |
| Priority date | — |
| Expiry date | Nov 9, 1986 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In the preparation of a fiber-forming polyester, the number of free carboxyl end groups present in the polymer may be reduced by adding to the polymerized polyester a glycidyl ether which reacts with the carboxyl end groups present to form free hydroxyl end groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.