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PROCEDURE FOR THE PROMOTION OF POLICE-ESTER-AMID POLYMERS APPLICABLE FOR EXAMPLE OF PREPARATION, PREPARATION OR TRANSMISSION
PROCEDURE FOR THE PROMOTION OF POLICE-ESTER-AMID POLYMERS APPLICABLE FOR EXAMPLE OF PREPARATION, PREPARATION OR TRANSMISSION
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机译:促进警察-酯-酰胺聚合物的方法,适用于制备,制备或传输的例子
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摘要
Process for preparing ether-ester-amide block polymers. It consists in the reaction, in the molten state of a dicarboxylic polyamide having COOH end groups with a polyoxyalkylene glycol having hydroxyl end groups in the presence of metallic tetraalkoxide(s) as catalysts. The tetraalkoxide(s) used are of the formula M(OR)4 where M is Zr or Hf and the radicals R, identical or different are linear or branched C1-C24 alkyl radicals.
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