Plasticized polydicyclopentadiene and a method for making the sa

Details Plasticized polydicyclopentadiene and a method for making the sa Plasticized polydicyclopentadiene and a method for making the sa

1983-11-15

1984-11-27

Schofer, Joseph L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524296, 524297, 524776, 526142, 526154, 526166, 526169, C08K 510

Patent

active

044852088

ABSTRACT:
Incorporation of an ester plasticizer having a solubility parameter from about 7.8 to about 10.2 (cal/cc).sup.1/2 increases the flexibility and impact strength of poly(dicyclopentadiene). In a preferred embodiment of the method for poly(dicyclopentadiene) synthesis, the plasticizer is incorporated into at least one of two parts of a metathesis-catalyst system: a catalyst/monomer solution or an activator/monomer solution. The two parts are then combined in the mixing head of a reaction injection molding machine and injected into a mold where the reaction mixture rapidly sets up into a thermoset polymer with greater flexibility and impact strength than is found in the corresponding unplasticized poly(dicyclopentadiene).

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The "Technology of Plasticizers", by Sears et al., pp. 1008, 1034, 1037, 1044.

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