Polyterephthalates and copolymers thereof having high...

Details Polyterephthalates and copolymers thereof having high... Polyterephthalates and copolymers thereof having high...

C - Chemistry, Metallurgy

08

G

400/2014, 402/20

C08G 63/87 (2006.01)

Patent

CA 1231195

Abstract of the Disclosure POLYTEREPHTHALATES AND COPOLYMERS THEREOF HAVING HIGH CLARITY AND PROCESS FOR MAKING SAME This invention relates to polyethylene tere- phthalate and copolymers thereof having high clarity and process for making the same. The invention pro- vides a process for making PET using protonic acid catalysts which result in a polymer having a level of haze which is lower than has heretofore been attainable, using conventional metallic catalysts. Further, the polyesters so produced have a lower melt temperature which improves the processability.

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