Process for the production of linear polyesters, particularly fo

Details Process for the production of linear polyesters, particularly fo Process for the production of linear polyesters, particularly fo

1989-02-23

1990-10-02

Jacobs, Lewis T.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524709, 524789, 524878, C08K 334, C08L 6702

Patent

active

049609157

ABSTRACT:
A process for the production of linear polyesters, the acid component consisting essentially of terephthalate units and the glycol component of ethylene glycol, by transesterification or direct esterification in the presence of an aluminum silicate-ethylene glycol suspension followed by polycondensation. An acidic phosphorus compound and subsequently an alkaline compound are added to the aluminum silicate before or during the formation of the suspension.

REFERENCES:
patent: 3366597 (1968-01-01), Fort
patent: 3376249 (1968-04-01), Meelheim
patent: 3419460 (1968-12-01), Ure
patent: 4654249 (1987-03-01), Barbey et al.

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