HIGH MOLECULAR AROMATIC POLYESTERS AND MANUFACTURE

HIGH MOLECULAR AROMATIC POLYESTERS AND MANUFACTURE

1. Phase interface process for the production of aromatic polyesters from iso- and/or terephthalic acid dichlorides, diphenols, chain terminators and optionally branching agents, in the presence of an alkali hydroxide and 0.2 to 3.0% by weight, based on the aromatic dicarboxylic acid dichlorides use...

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Hauptverfasser: UBE FUTSUKUSU, HANSUUYURUGEN MAISUNAA, DEIITAA FURAITAAKU
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 UBE FUTSUKUSU
HANSUUYURUGEN MAISUNAA
DEIITAA FURAITAAKU
description 1. Phase interface process for the production of aromatic polyesters from iso- and/or terephthalic acid dichlorides, diphenols, chain terminators and optionally branching agents, in the presence of an alkali hydroxide and 0.2 to 3.0% by weight, based on the aromatic dicarboxylic acid dichlorides used, of a tertiary amine, characterised in that the process is carried out using an excess of 0.3 to 1.8 mol % of the alkali hydroxide, based on phenolic hydroxyl, and the tertiary amine contains 1 to 4 heteroatoms incorporated in a 4- to 7- membered cycloaliphatic compound, at least one of these heteroatoms being a tertiary nitrogen atom.
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Phase interface process for the production of aromatic polyesters from iso- and/or terephthalic acid dichlorides, diphenols, chain terminators and optionally branching agents, in the presence of an alkali hydroxide and 0.2 to 3.0% by weight, based on the aromatic dicarboxylic acid dichlorides used, of a tertiary amine, characterised in that the process is carried out using an excess of 0.3 to 1.8 mol % of the alkali hydroxide, based on phenolic hydroxyl, and the tertiary amine contains 1 to 4 heteroatoms incorporated in a 4- to 7- membered cycloaliphatic compound, at least one of these heteroatoms being a tertiary nitrogen atom.</abstract><oa>free_for_read</oa></addata></record>
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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 HIGH MOLECULAR AROMATIC POLYESTERS AND MANUFACTURE
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