Transesterification of polyesters
AssigneeBASF SE
InventorsZhenguo Liu, Siqi Xue, Ting Liu, Eason Sun
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Abstract
The present invention relates to a polyester composition comprising: (A) 15 to 99 wt % of polyester blend of two or more polyesters based on the total weight of the polyester composition, (B) 0.05 to 5 wt % of a transesterification accelerator based on the total weight of the polyester composition, wherein the transesterification accelerator comprises alkali metal carbonate salt, alkali earth metal carbonate salt, alkali metal bicarbonate salt, alkali earth metal bicarbonate salt and combination thereof, (C) optionally a reinforcing filler, and (D) optionally further an additive. The present invention also relates to an article prepared from the polyester composition and a method of preparing the article.
Claims23
A polyester composition comprising:
- (A) 15 to 99 wt % of a polyester blend of two or more polyesters based on the total weight of the polyester composition,
- (B) 0.05 to 5 wt % of a transesterification accelerator based on the total weight of the polyester composition, wherein the transesterification accelerator is selected from the group consisting of alkali metal carbonate salt, alkali earth metal carbonate salt, alkali metal bicarbonate salt, alkali earth metal bicarbonate salt and combinations thereof,
- (C) optionally a reinforcing filler, and
- (D) optionally further an additive.
A method of transesterifying polyesters comprising the use of a bicarbonate salt as a transesterification accelerator.
Dependencies are inferred from the claim text.