Process for the production of high molecular weight polyester

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

1984-11-23

1985-11-19

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528302, 528305, 528480, 528501, C08G 6322

Patent

active

045543437

ABSTRACT:
Disclosed is a process for the preparation of high molecular weight polyesters comprising reacting substantially equimolar amounts of an acid component comprising at least one alicyclic or aromatic dicarboxylic anhydride or corresponding dicarboxylic acid with 1,3- or 1,4-cyclohexanedimethanol, at a temperature between about 110.degree. C. and about 180.degree. C. in a solvent, azeotropically removing water from the reaction mixture while condensing solvent vapor and returning it to the reaction mixture, and recovering the polyester after an inherent viscosity of at least 0.4 has been attained.

REFERENCES:
patent: 2901466 (1959-08-01), Kibler et al.
patent: 3004067 (1961-10-01), Whitfield et al.
patent: 3033822 (1962-05-01), Kibler et al.
patent: 3523923 (1970-08-01), Smith et al.
patent: 4107150 (1978-08-01), Campbell et al.
patent: 4201859 (1980-05-01), Agarwal

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