Sulfur-modified polytetramethylene ether glycols, a method...

Details Sulfur-modified polytetramethylene ether glycols, a method... Sulfur-modified polytetramethylene ether glycols, a method...

C - Chemistry, Metallurgy

08

L

400/102, 402/137

C08L 81/02 (2006.01) C08G 18/50 (2006.01) C07C 149/18 (1985.01)

Patent

CA 1222779

TITLE Sulfur-Modified Polytetramethylene Ether Glycols, A Method for Preparing Them, and Polyurethanes Prepared Therefrom ABSTRACT OF THE DISCLOSURE Polytetramethylene ether glycol is modified so that it contains 1-25%, by weight of .beta.,.beta.'- dihydroxyalkyl sulfide moieties. These modified polytetramethylene ether gly- cols have enhanced resistance to degradation by heat and oxygen. The invention also relates to a method of making the modified PTMEG's, to their use as stabilizers against the degradation of the polyether chain, and to polyurethanes made with them. CH 1197

414170

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