Process for the production of high molecular weight...

Details Process for the production of high molecular weight... Process for the production of high molecular weight...

C - Chemistry, Metallurgy

08

G

C08G 63/91 (2006.01) C08G 63/20 (2006.01) C08G 63/80 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2083282

2083282 9217520 PCTABS00016 A process for the solid state polyaddition of a polyester resin in which the resin, blended in a molten state with a dianhydride of an aromatic tetracarboxylic acid is granulated, crystallized and then upgraded, characterized in that the crystallization and upgrading temperature is comprised in the range between the TG and 170 ·C, preferably between 130· and 170 ·C.

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