PROCESS FOR PREPARING POLYESTERS BY USING AN ADDITIVE
A process for reducing the amount of hydroxyl-end-groups of a polyester, wherein the polyester is prepared from at least one dicarboxylic acid and at least one dihydroxy alcohol, and at least one additive selected from the group consisting of carboxylic acid anhydride and mono-isocyanate, and wherei...
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Main Authors | , , , , |
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Format | Patent |
Language | English Lithuanian |
Published |
27.12.2022
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Subjects | |
Online Access | Get full text |
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Summary: | A process for reducing the amount of hydroxyl-end-groups of a polyester, wherein the polyester is prepared from at least one dicarboxylic acid and at least one dihydroxy alcohol, and at least one additive selected from the group consisting of carboxylic acid anhydride and mono-isocyanate, and wherein the additive is added during a step of prepolycondensation and/or during a step of polycondensation and/or after a step of polycondensation. |
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Bibliography: | Application Number: LT17067033T |