Polyol polyester synthesis

Details Polyol polyester synthesis Polyol polyester synthesis

C - Chemistry, Metallurgy

07

H

260/483, 352/32.

C07H 13/06 (2006.01) C07C 67/48 (2006.01) C07C 69/58 (2006.01)

Patent

CA 2027418

Polyol polyesters are purified by a process comprising bleaching with a specific silica gel and/or treating with oxygen followed by heat treatment and removal of volatile products by steam deodorization. Any steam deodorization is accomplished at reduced temperatures or in admixture with triglycerides to minimize thermal degradation of the polyol polyesters.

Polyesters de polyol purifiés selon un processus de blanchiment à l'aide d'un gel de silice particulier et/ou un traitement au moyen d'oxygène, suivis d'un traitement thermique et de l'enlèvement de produits volatils par désodorisation à la vapeur. Toute désodorisation à la vapeur est accomplie à des températures réduites ou durant le mélange additionnel de triglycérides, afin de limiter la dégradation thermique des polyesters de polyol.

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