Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1991-03-07
1992-03-31
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526346, 502103, 502154, C08F 464
Patent
active
051009838
ABSTRACT:
A catalyst for polymerizing an aromatic vinyl compound, comprising a transition metal compound as a catalyst component (A) represented by the general formula ##STR1## where M is an element of Group IVb of the Periodic Table of Elements; X.sup.1 and X.sup.2 are respectively halogen; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are respectively hydrogen or an alkyl group of from 1 to 6 carbons; and m is an integer of 1 to 6; and an aluminoxane as a catalyst component (B) represented by the general formula (2) or (3): ##STR2## where n is an integer of from 4 to 60; and R.sup.7 is an alkyl of from 1 to 6 carbons, phenyl or benzyl, preferably methyl, and a process for producing a polymer of an aromatic vinyl compound, comprising polymerizing the aromatic vinyl compound in the presence of the catalyst.
REFERENCES:
patent: 4874734 (1989-10-01), Kioka et al.
patent: 4962262 (1990-10-01), Winter et al.
patent: 4978730 (1990-12-01), Maezawa et al.
patent: 5008356 (1991-04-01), Ishimaru et al.
patent: 5017665 (1991-05-01), Chang
Teskin Fred
Tosoh Corporation
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