Thermally activated two component metathesis catalyst system
AssigneeHercules Incorporated
InventorLawrence L. Nelson
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Abstract
Disclosed is a method of reducing the activation rate of an alkyl aluminum activator in the metathesis polymerization of strained ring cycloolefins. Activation rate is reduced by use of certain nucleophilic Lewis bases as the reaction rate moderator.
Claims22
In a process for preparing molded objects wherein a liquid reaction mass comprised of a metathesis polymerizable cycloolefin, a metathesis polymerization catalyst, an alkyl aluminum catalyst activator and a reaction rate moderator are charged to a mold wherein polymerization will take place, the improvement wherein said reaction rate moderator comprises a sterically unhindered or partially unhindered nucleophilic Lewis base selected from the class consisting of unsaturated cyclic amines and saturated polycyclic amines.
A polymerization feed composition comprising:
- (a) a metathesis polymerizable cycloolefin;
- (b) a metathesis polymerization catalyst;
- and
- (c) a catalyst activator comprising an alkyl aluminum compound and a reaction rate moderator comprising a sterically unhindered or partially unhindered nucleophilic Lewis base selected from the class consisting of unsaturated cyclic amines and saturated polycyclic amines.
Dependencies are inferred from the claim text.