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Polyurethane elastomer thermally stable, based on poly (oxyalkylene) glycol transplant
Polyurethane elastomer thermally stable, based on poly (oxyalkylene) glycol transplant
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机译:基于聚(氧化烯)二醇移植的聚氨酯弹性体热稳定
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摘要
Flexible automobile exterior body parts are molded from a polyurethane elastomer prepared from a reaction mixture comprising: PP A. A "GRAFT" POLYOL PREPARED BY THE IN SITU POLYMERIZATION OF ONE OR MORE ETHYLENICALLY UNSATURATED MONOMERS IN A POLY(OXYPROPYLENE)- POLY(OXYETHYLENE) GLYCOL OF MOLECULAR WEIGHT FROM ABOUT 1750 TO ABOUT 4000 AND CONTAINING FROM 15 TO 50% OXYETHYLENE GROUPS BY WEIGHT,P PB. METHYLENEBIS(4-PHENYLISOCYANATE),PPC. 1,4- BUTANEDIOL.
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