Process for the preparation of high molecular weight linear...

Details Process for the preparation of high molecular weight linear... Process for the preparation of high molecular weight linear...

C - Chemistry, Metallurgy

08

G

C08G 63/91 (2006.01) C08G 63/02 (2006.01) C08G 63/80 (2006.01)

Patent

CA 2069980

HOE 91/F 169 Abstract of the Disclosure: Process for the preparation of high molecular weight linear polyester. A process for the preparation of a high molecular weight polyester by post-condensation of a suspension of a solid, finely divided polyester of lower molecular weight at elevated temperature in a liquid heat transfer medium which does not penetrate into the polyester is described. The process is preferably employed for the post-conden- sation of polyesters of structural groups of the formulae III and IV (III) Image Image (IV) and silicone oils are used as the heat transfer medium. The resulting products are very substantially linear and are free from insoluble constituents.

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