Method for producing aliphatic polyester having increased molecular weight

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United States of America Patent

PATENT NO 8852517
APP PUB NO 20130289221A1
SERIAL NO

13997364

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Abstract

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The present invention addresses the problem of providing a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight by preventing evaporation of a diisocyanate when blending the diisocyanate with an aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point thereof so that the diisocyanate and the aliphatic polyester prepolymer are uniformly blended.

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Patent Owner(s)

  • SHOWA DENKO K.K.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichikawa, Yasushi Tokyo, JP 214 4119
Ishii, Akira Tokyo, JP 183 1679
Kimura, Hideharu Tokyo, JP 13 93

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