Ring-opened copolymers of at least one norbornene-type monomer w

Details Ring-opened copolymers of at least one norbornene-type monomer w Ring-opened copolymers of at least one norbornene-type monomer w

1977-03-28

1978-08-29

Lilling, Herbert J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526137, 526153, 526280, 526281, 526282, 526916, C08F 3208, C08F23208, C08F 3600

Patent

active

041105281

ABSTRACT:
At least one norbornene-type monomer is copolymerized with about 0% to about 95% by weight of dicyclopentadiene, based upon total polymer weight. The polymerization is primarily by ring opening and is conducted in the presence of (1) a catalyst comprising (a) at least one compound selected from the group consisting of dialkylaluminum iodides, alkylaluminum diiodides and mixtures of trialkylaluminum compounds with iodine, (b) at least one dialkylaluminum chloride or alkylaluminum dichloride and (c) at least one monomer- or solvent-soluble tungsten compound, and (2) at least one nonconjugated acyclic olefin having at least one hydrogen on each double-bonded carbon atom. Catalyst components (a) and (b) are charged before catalyst component (c). Use of a catalyst containing components (a), (b) and (c) produces easy-processing and substantially gel-free polymers, whereas a catalyst containing only (a) and (c) or only (b) and (c) produces heavily gelled polymers.

REFERENCES:
patent: 3467633 (1969-09-01), Harris et al.
patent: 3577400 (1971-05-01), Judy
patent: 3597403 (1971-08-01), Ofstead
patent: 3684781 (1972-08-01), Nutzel et al.
patent: 3687921 (1972-08-01), Oberkirch et al.
patent: 3778420 (1973-12-01), Brown et al.
patent: 3790545 (1974-02-01), Minchak
patent: 3816382 (1974-06-01), Streck et al.
patent: 3836593 (1974-09-01), Streck et al.

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