C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
402/136, 260/634
C07C 43/13 (2006.01) C07C 43/315 (2006.01) C08G 4/00 (2006.01) C08G 18/48 (2006.01) C08G 18/56 (2006.01)
Patent
CA 1247652
TITLE Oligomeric Formal Diols of Poly(Tetramethylene Ether) Glycol and Polyurethanes Prepared Therefrom ABSTRACT OF THE DISCLOSURE Oligomeric formal diols are prepared by coupling segments of PTMEG, each having a molecular weight of 1000-3000, with formaldehyde. The formal diols are useful in preparing polyurethanes.
383613
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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