Stabilization of polycondensation catalysts

Details Stabilization of polycondensation catalysts Stabilization of polycondensation catalysts

1982-06-03

1984-01-03

Garvin, Patrick

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

528279, 528283, 502158, 502169, 502170, C08F 416

Patent

active

044241402

ABSTRACT:
The process for the stabilization of polycondensation catalysts and the stabilization composition used in such process for producing polyesters and copolyesters by the polycondensation of dicarboxylic acid and an aliphatic glycol using certain metal-containing polycondensation catalysts in conjunction with a stabilization composition formed as the reaction product of phosphoric acid, meta-phosphoric acid, superphosphoric acid or mixtures thereof and an aliphatic epoxide having between 2 and about 10 carbon atoms.

REFERENCES:
patent: Re30554 (1981-03-01), Weinberg et al.
patent: 4101526 (1978-07-01), Buxbaum
patent: 4115371 (1978-09-01), Bier et al.
patent: 4143057 (1979-03-01), Weinberg et al.
patent: 4361694 (1982-11-01), Weinberg et al.

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