Catalyst composition for ring-opening polymerization of norborne

Details Catalyst composition for ring-opening polymerization of norborne Catalyst composition for ring-opening polymerization of norborne

1974-10-07

1978-01-10

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 252430, 252431R, 526114, 526115, 526258, 526271, 526281, C08F 478

Patent

active

040680630

ABSTRACT:
A catalyst composition consisting essentially of a reaction mixture of (A) at least one member selected from the group consisting of compounds of W, Mo, Re and Ta, (B) at least one member selected from the group consisting of organometallic compounds of elements of Groups IA, IIA, IIB and IIIA of the Deming Periodic Table, and (C) at least one member selected from the group consisting of compounds of V, Cr, Mn, and elements of Groups IVB and VIII of the Deming Periodic Table, has a very high activity in the ring-opening polymerization of norbornene derivatives having at least one polar substituent selected from the group consisting of ester groups, nitrile groups, amide groups, imide groups, carboxylic acid anhydride groups and halogens. The metal atom ratio of (C)/(A) is usually 0.001 - 50, and the molar ratio of (B)/(A) is usually 1 - 10. At least one said norbornene derivative and at least one cycloolefin other than cyclohexene can also successfully be subjected to ring-opening copolymerization with said catalyst.

REFERENCES:
patent: 3458489 (1969-07-01), Natta et al.
patent: 3707520 (1972-12-01), Pampus et al.
patent: 3790544 (1974-02-01), Maertens et al.
patent: 3798175 (1974-03-01), Streck et al.
patent: 3856758 (1974-12-01), Ueshima et al.
patent: 3859265 (1975-01-01), Hepworth
patent: 3883495 (1975-05-01), Maertens et al.

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