Method for chain-opening polymerization of norbornene derivative

Details Method for chain-opening polymerization of norbornene derivative Method for chain-opening polymerization of norbornene derivative

1979-01-22

1981-02-10

Smith, Edward J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252429R, 525245, 526113, 526280, 526281, C08F 416, C08F 422, C08F 1800

Patent

active

042500630

ABSTRACT:
Polymers or copolymers of norbornene derivatives can be produced by contacting in the presence or absence of an inert solvent at least one norbornene derivative substituted by at least one polar group selected from the group consisting of ester, ether, nitrile, amide, imide, acid anhydride, halogen, and silyl, or by at least one substituent having one of said polar groups; or a combination of said norbornene derivative with at least one member selected from the group consisting of cycloalkenes having no polar substituent and polymers having olefinic carbon-to-carbon double bonds; with a catalyst consisting essentially of (a) at least one coordination compound of W or Mo, the oxidation number of which is 2, 1 or 0, (b) at least one titanium tetrahalide and, if necessary, (c) at least one compound selected from the group consisting of componds having an electron-accepting .pi. bond, N-halogen-substituted cyclic acid imides, sulfides, sulfoxides and phosphines. The above-mentioned catalyst is more active, cheaper, and easier to handle than the conventional catalysts containing organoaluminum compounds.

REFERENCES:
patent: 3856758 (1974-12-01), Meshima et al.
patent: 3859265 (1975-01-01), Hepworth
patent: 3933777 (1976-01-01), Babitsky et al.
patent: 3991139 (1976-11-01), Kokuryo et al.
patent: 4005047 (1977-01-01), Chauvin et al.
Michelotti et al., Journal of Polymer Science, Part A, 895 (1965).

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