Process for making polyester polymer
US4119614A · kind A · utility
4Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Dec 22, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/87
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The method of making a polyester polymer by polycondensing a glycol phthalate prepolymer in the presence of a germanium dioxide/tetraalkyl ammonium hydroxide catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.