Low shrinking thermosetting polyester resin compositions and...

Details Low shrinking thermosetting polyester resin compositions and... Low shrinking thermosetting polyester resin compositions and...

C - Chemistry, Metallurgy

08

L

400/4501, 400/50

C08L 67/06 (2006.01) C08F 299/04 (2006.01) C08G 63/553 (2006.01)

Patent

CA 1237217

- 68 - LOW SHRINKING THERMOSETTING POLYESTER RESIN COMPOSITIONS AND A PROCESS FOR THE PREPARATION THEREOF Abstract This invention relates to low shrinking, low viscosity curable polyester resin compositions, which compositions contain a mixture of (i) an unsaturated ester terminally modified with a reactive olefin such as dicyclopentadiene or other Diels-Alder adducts of cyclopentadiene with an olefinic or acetylenic hydrocarbon or alkylated derivative thereof, (ii) a copolymerizable ethylenically unsaturated monomer which serves to crosslink the unsaturated polyester to a thermoset product, and (iii) a thermoplastic polymer low profile additive. Cured articles prepared from these curable polyester resin compositions exhibit reduced surface roughness. Fiber reinforced thermoset articles can be produced from these curable resin compositions.

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