噻吩,2-乙基-3-(1-甲基乙基)- (9CI) 1,3-Diazetidine-2,4-dione,1,3-bis((5-isocyanato-1,3,3-trimethylcyclohexyl)methyl)-,polymerwith1,4-butanediol,2-ethyl-1-hexanol-blocked

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