Process for preparing polyesters with a catalyst system comprising an antimony-containing poly-condensation catalyst and an ethylenically unsaturated compound
US4067856A · kind A · utility
3Cited by
0References
7Claims
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Key dates
| Filing date | May 21, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | May 21, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polycondensation process employing a catalyst system comprising an antimony-containing polycondensation catalyst and selected ethylenically unsaturated compounds, such as allyl glycidyl ether. The ethylenically unsaturated compound stabilizes the antimony-containing catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.