Process for producing diene polymer with alkaline earth metal

Details Process for producing diene polymer with alkaline earth metal Process for producing diene polymer with alkaline earth metal

1992-03-13

1993-09-28

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525347, 525348, 525351, 525352, 525375, C08C 1936, C08C 1920, C08C 1922

Patent

active

052487369

ABSTRACT:
There are provided a process for producing a diene polymer having markedly improved tensil strength and wear resistance and further having improved heat build-up, refound resilience, processability and wet skid resistance, as well as a rubber composition containing said diene polymer and having improved tensil strength, wear resistance, etc. Said diene polymer is produced by polymerizing a conjugated diene monomer or a mixture of the conjugated diene monomer and an aromatic vinyl monomer in a hydrocarbon solvent using a composite initiator containing an alkaline earth metal, and reacting active ends of the obtained active diene polymer with (a) a compound represented by the formula M.dbd.C.dbd.M (wherein M denotes an oxygen atom or a sulfur atom) or (b) N-substituted aminoketone, N-substituted thioaminoketone, N-substituted aminoaldehyde, N-substituted thioaminoaldehyde or a compound having an atomic group in a molecule represented by the formula --C(.dbd.M)--N< in a molecule.

REFERENCES:
patent: 4647625 (1987-03-01), Aohuma
CA77(8):49209d, "Polymers With Terminal Functional Groups," Petrov, et al., U.S.S.R., 1972, SU330178-240272.

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