Process for making diene polymer rubbers

Details Process for making diene polymer rubbers Process for making diene polymer rubbers

C - Chemistry, Metallurgy

08

C

402/31, 402/340

C08C 19/44 (2006.01)

Patent

CA 1257043

ABSTRACT A process for making a diene polymer rubber which comprises reacting an active diene polymer rubber having alkali metal and/or alkaline earth metal terminals, which is obtained by polymerizing a conjugated diene monomer alone or together with an aromatic vinyl monomer in a hydrocarbon solvent, using an alkali metal and/or alkaline earth metal initiator, with (1) a tin compound expressed by the general formula RaSnXb (in which R stands for an alkyl, alkenyl, cycloalkenyl or aromatic hydrocarbon group; X is a halogen atom; a is an integer of 0-2, and b is an integer of 2-4), and (2) at least one organic compound selected from the group consisting of aminoaldehydes, aminoketones, aminothioaldehydes, aminothioketones and the organic compounds having in their molecules Image linkages (in which A stands for an oxygen or sulfur atom).

493745

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