Process for making polyester polymer

Details Process for making polyester polymer Process for making polyester polymer

1977-12-22

1978-10-10

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

252431N, 252431R, 260429R, C08G 6322

Patent

active

041196147

ABSTRACT:
The method of making a polyester polymer by polycondensing a glycol phthalate prepolymer in the presence of a germanium dioxide/tetraalkyl ammonium hydroxide catalyst.

REFERENCES:
patent: 3455645 (1969-07-01), Kroes
patent: 3459711 (1969-08-01), Hartmann et al.
patent: 3497474 (1970-02-01), Jeurissen et al.
patent: 3497475 (1970-02-01), Conix et al.
patent: 3511811 (1970-05-01), Conix et al.
patent: 3647362 (1972-03-01), Head et al.
patent: 3651017 (1972-03-01), Tanabe et al.

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