Method for producing polyesterols having a reduced reactivity

Method for producing polyesterols having a reduced reactivity

A method for the production of polyesterols with reduced reactivity (I) by polycondensation of dicarboxylic acids or their derivatives with H-functional substances in presence of tin catalysts, involves bringing (I) into contact with oxygen after the end of the esterification reaction. An independen...

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1. Verfasser: KREITSCHMANN MIRKO,ROTERMUND UDO,FRITSCH PETER
Format: Patent
Sprache:eng
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator KREITSCHMANN MIRKO,ROTERMUND UDO,FRITSCH PETER
description A method for the production of polyesterols with reduced reactivity (I) by polycondensation of dicarboxylic acids or their derivatives with H-functional substances in presence of tin catalysts, involves bringing (I) into contact with oxygen after the end of the esterification reaction. An independent claim is also included for polyesterols obtained by this method.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title Method for producing polyesterols having a reduced reactivity
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