Production of polyesters

Details Production of polyesters Production of polyesters

1976-07-22

1978-01-03

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

560 76, C08G 6318, C08G 6334

Patent

active

040666271

ABSTRACT:
Poly(alkylene terephthalates) are prepared by an improved process which provides high molecular weight, in a shortened reaction time, without excessive loss of the diol reactant to side reactions. In the process an excess of the diol reactant is heated with a mixture of the corresponding dialkyl terephthalate and from 5 to 95 mole % of terephthalic acid, based on the mixture.

REFERENCES:
patent: 3639448 (1972-02-01), Matsuzawa et al.
patent: 3836574 (1974-09-01), Achsel et al.
patent: 3859257 (1975-01-01), Schade et al.
patent: 3940367 (1976-02-01), Pelousek et al.

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