PREPARATION OF UNSATURATED POLYESTERS
The present invention relates to a process for making unsaturated polyester with high fumarate/maleate ratio. In particular, the process comprises making unsaturated polyester with ethylenically unsaturated compound as one of the starting material followed by isomerization using N,N-dimethylacetoace...
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Main Authors | , , |
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Format | Patent |
Language | English French |
Published |
03.08.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention relates to a process for making unsaturated polyester with high fumarate/maleate ratio. In particular, the process comprises making unsaturated polyester with ethylenically unsaturated compound as one of the starting material followed by isomerization using N,N-dimethylacetoacetamide (DMAA) as the catalyst. The polyester has a fumarate/maleate ratio of 90/10 or greater.
La présente invention concerne un procédé de fabrication d'un polyester insaturé ayant un rapport fumarate/maléate élevé. En particulier, le procédé comprend la fabrication d'un polyester insaturé avec un composé éthyléniquement insaturé en tant que l'un des matériaux de départ suivi d'une isomérisation à l'aide de N, N-diméthylacétoacétamide (DMAA) en tant que catalyseur. Le polyester a un rapport fumarate/maléate de 90/10 ou plus. |
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Bibliography: | Application Number: WO2023US61219 |