Color improvement and acetaldehyde reduction in high...

Details Color improvement and acetaldehyde reduction in high... Color improvement and acetaldehyde reduction in high...

C - Chemistry, Metallurgy

08

G

402/187, 18/742

C08G 18/82 (2006.01) B29B 13/00 (2006.01) B29C 47/68 (2006.01) C08G 63/90 (2006.01) B29C 47/00 (2006.01)

Patent

CA 1197943

COLOR IMPROVEMENT AND ACETALDEHYDE REDUCTION IN HIGH MOLECULAR WEIGHT POLYESTERS Abstract of the Disclosure This invention relates to a method of improving the brightness and color of a polyester resin and reducing the acetaldehyde content by passing the resin through molecular sieves at a temperature of from 230°C to about 300°C.

417612

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