Method of making purely primary diamines

Details Method of making purely primary diamines Method of making purely primary diamines

C - Chemistry, Metallurgy

07

C

260/446.3, 260/6

C07C 217/42 (2006.01) C07C 247/04 (2006.01) C07F 7/10 (2006.01) C08G 18/50 (2006.01) C08G 65/20 (2006.01) C08G 65/333 (2006.01)

Patent

CA 1320494

42015 CAN 4A Abstract The present invention provides a method for making primary amine terminated linear polyethers of molecular weight above about 3500 which have virtually no contamination from in-chain secondary amine functionalities or amine-terminated tertiary amine side-chains. This method involves the production of novel intermediates. The invention also provides purely linear polyether-polyurea block copolymers formed by chain extension of the primary amine terminated linear polyethers.

568395

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