Citation: . PROPERTIES OF POLYURETHANE ELASTOMERS BASED ON POLY (OXYETHYLENE-co-OXYTETRAMETHYLENE) DIOL*[J]. Chinese Journal of Polymer Science, ;2001, 19(4): 371-376. shu

PROPERTIES OF POLYURETHANE ELASTOMERS BASED ON POLY (OXYETHYLENE-co-OXYTETRAMETHYLENE) DIOL*

Received Date: 13 July 2000
Revised Date: 5 September 2000

Polyurethane elastomers derived from 4,4'-methylene bis(phenyl isocyanate), butylene glycol and the lowoxyethylene moiety content copolyether of tetrahydrofuran and ethylene oxide, obtained by copolymerization usingheteropolyacid-ethylene oxide initiator system, were prepared. The polyurethanes exhibited an increased water absorptionand much better low temperature resilience, which remained high even at a temperature of -3℃, while that of polyurethanebased upon poly(tetramethylene ether) glycol of the same molecular weight,i.e. being 2000,and molecular weight distribution,i.e.in the range of 1.4-1.5,starts to decrease dramatically at 5℃.
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