Terephthalic containing hybrid castable resins

Details Terephthalic containing hybrid castable resins Terephthalic containing hybrid castable resins

C - Chemistry, Metallurgy

08

G

402/134

C08G 18/68 (2006.01)

Patent

CA 1334463

Hybrid resins result from the combination of urethane and unsaturated polyester technology. Improved resin casting and laminate properties are obtained when polyalkylene terephthalate unsaturated polyesters are employed, in lieu of the isophthalic polyesters of the prior art. Especially notable are improved heat distortion temperatures which exceed substantially those of the isophthalic based resins. The economics of using such terephthalate resins is demonstrated. Also within the scope of the present invention is the use of secondary hydroxyl compounds in the preparation of the polyesters. It has previously been believed that such compounds led to embrittlement of the final hybrid.

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