Process for preparing polyurethanes

Details Process for preparing polyurethanes Process for preparing polyurethanes

C - Chemistry, Metallurgy

08

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C08G 18/76 (2006.01) C08G 18/10 (2006.01) C08G 18/77 (2006.01) C08G 18/78 (2006.01) C08G 18/81 (2006.01) C09K 19/38 (2006.01)

Patent

CA 1332092

A PROCESS FOR PREPARING POLYURETHANES ABSTRACT OF THE DISCLOSURE Novel polyurethanes are prepared by reacting a) an organic diisocyanate of formula Image wherein M represents -CH=CH-; -N=N-; -CH=N-; -?-O-; or Image ; and where R1 through R4 may be the same or different and represent hydrogen, halogen, CN, CF3 or saturated aliphatic C1-C12 alkyl residues which may be interrupted by ether hydrogen atoms with b) compounds of molecular weights of from between 400 and 10,000 and which contain at least two active hydrogen atoms reactive toward isocyanate groups.

541160

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