Continuous manufacture of unsaturated polyesters

Details Continuous manufacture of unsaturated polyesters Continuous manufacture of unsaturated polyesters

C - Chemistry, Metallurgy

08

G

402/191, 402/193

C08G 63/52 (2006.01) C08G 63/68 (2006.01)

Patent

CA 1090039

ABSTRACT OF THE DISCLOSURE: An economical and environmentally advantageous process for the continuous manufacture of unsatur- ated polyesters, wherein the vapors formed during the polycon- densation are purified, in a two-part distillation column, to a degree where the residual content of organic starting materials is less than 1.5 per cent by weight, based on the total weight of the effluent, and the unconverted starting materials are recycled to the process.

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