Cyclopentene-dicyclopentadiene copolymers and method of making s

Details Cyclopentene-dicyclopentadiene copolymers and method of making s Cyclopentene-dicyclopentadiene copolymers and method of making s

1975-04-03

1977-01-11

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526169, 526185, 526308, 526916, C08F21000, C08F21200

Patent

active

040028151

ABSTRACT:
Substantially gel-free copolymers of cyclopentene with dicyclopentadiene are prepared by polymerizing these monomers 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 elemental iodine and (b) at least one solvent- or monomer-soluble tungsten compound, and (2) at least one nonconjugated acyclic olefin having at least one hydrogen on each double-bonded carbon atom. Catalyst component (a) is charged before catalyst component (b).

REFERENCES:
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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: 3790543 (1974-02-01), Lehnert et al.
patent: 3790545 (1974-02-01), Minchak
patent: 3853830 (1974-12-01), Minchak
Truett et al., J. Amer. Chem. Soc., 1960, 82, 2337-2340.
Rinehart in "Polymer Chemistry of Synthetic Elastomers", Part II (Interscience, New York, 1969) pp. 880-882.

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