PHOSPHORUS-CONTAINING CELLULOSE ESTERS, METHODS FOR THEIR PREPARATION, THEIR USE, AND FLAME RETARDANTS
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United States of America Patent
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Oct 20, 2022
app pub date -
Sep 11, 2020
filing date -
Sep 11, 2019
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Abstract
The invention relates to cellulose esters, the ester groups of which are at least partially containing phosphorus and are based on unsaturated carboxylic acids and reactive phosphorus components, wherein the latter are preferably phosphorus derivatives of sugar alcohols or of tartaric acid derivatives. The invention also relates to methods for preparing novel phosphorus-containing cellulose esters and to their use as flame retardants for plastics.
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