Preparation of polyester copolymers
US5175237A · kind A · utility
2Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Feb 1, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/78
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Preparation of polyester resins from dimethylterephthalate by forming bis(2-hydroxyethyl) terephthalate, and using a portion of this product as solvent for one or more dicarboxylic acids and one or more dihydric alcohols, reacting the acids and alcohols, and combining the portions, and polymerizing the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.