Diaryl carbinol metathesis catalysts for ring-opening polymeriza

Details Diaryl carbinol metathesis catalysts for ring-opening polymeriza Diaryl carbinol metathesis catalysts for ring-opening polymeriza

1992-12-31

1994-01-04

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526134, 526135, 526140, 526141, 526143, 526146, 526147, 526166, 526169, 526283, 526308, 502111, 502117, 502167, 502168, 502169, 502172, 2643282, 26433113, 26433117, C08F 422, C08F 420, C08G 6108

Patent

active

052761185

ABSTRACT:
A catalyst and process for the metathesis polymerization of cyclic olefins, such as dicyclopentadiene, are disclosed. The catalyst comprises the reaction product of a transition metal halide preferably tungsten, molybdenum, or tantalum halides and a diaryl carbinol of the formula ##STR1## wherein G is independently C.sub.1-12 alkyl, C.sub.1-12 alkoxy, C.sub.1-12 alkylamino, C.sub.6-20 aryl, halide, or C.sub.1-6 haloalkyl; g is independently 0 to 4; R is independently hydrogen or G or the R's are combined as a single bond or as a bridging group X, where X is CH.sub.2, CH.sub.2 CH.sub.2, O, S, SO, SO.sub.2 or NR.sup.1, and R.sup.1 is H or C.sub.1-6 alkyl. Optional co-catalysts include borohydrides, organo tin hydrides and organo aluminum compounds. Polymerization can be carried out in a reaction injection molding process to prepare a molded article.

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Aldrich Chemical Co., Inc., "Catalog Handbook of Fine Chemicals", pp. 391, 699 (1992).
Aldrich Chemical Co., Inc., "Classes of Compounds and Numerical Cross Reference List", pp. 158-160 (1988).

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