Vinyl-substituted benzylorganotin compound and a polymer thereof

Details Vinyl-substituted benzylorganotin compound and a polymer thereof Vinyl-substituted benzylorganotin compound and a polymer thereof

1994-03-02

1996-04-09

Zitomer, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526335, 526340, 526347, 5263471, 556 87, C08F23004

Patent

active

055063195

ABSTRACT:
Disclosed are: a vinyl-substituted benzylorganotin compound represented by the following general formula A: ##STR1## wherein R.sup.1 R.sup.2 C.dbd.CR.sup.3 --, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are each a group bonded to the benzene ring and R.sup.1 to R.sup.7 are each one of a hydrogen atom and a hydrocarbon group having 1 to 30 carbon atoms which is one of aliphatic, alicyclic and aromatic hydrocarbon groups, R.sup.8 to R.sup.10 are each a hydrocarbon group having 1 to 30 carbon atoms which is one of aliphatic, alicyclic and aromatic hydrocarbon groups and R.sup.1 to R.sup.10 may be the same or different from each other; a process for preparing a polymer comprising copolymerizing, in a hydrocarbon solvent in the presence of an organolithium compound as the initiator, (1) at least one of conjugated dienes and vinylaromatic hydrocarbons and (2) the organotin compound represented by the general formula A; a copolymer comprising (1) at least one of conjugated diene units and vinylaromatic hydrocarbon units and (2) units of a vinyl-substituted benzylorganotin compound monomer represented by the general formula A; and a rubber composition comprising 100 weight parts of a rubber material containing 30 weight parts or more of a polymer having number-average molecular weight of 5.times.10.sup.4 to 80.times.10.sup.4 which is obtained by the above process, 20 to 100 weight parts of carbon black and 0.1 to 5 weight parts of a vulcanizing agent.

REFERENCES:
patent: 4397994 (1983-08-01), Takeuchi
patent: 4857618 (1989-08-01), Silver
patent: 5210143 (1993-05-01), Silver
patent: 5268439 (1993-12-01), Hergenrother
Mizuno et al., Chemistry Letters, The Chemical Society of Japan, (1993) 1349-1352.
Reynolds et al., J. Chem. Soc., Perkin Trans. 2, (1977) 971.

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