Manufacture of polyesters

Details Manufacture of polyesters Manufacture of polyesters

1987-04-02

1988-12-06

Nielsen, Earl

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

Synthetic resins

From carboxylic acid or derivative thereof

528361, 525415, 525437, 560185, C08G 6376, C08G 6302

Patent

active

047897260

ABSTRACT:
A process for the manufacture of polyesters, especially polylactides or poly(lactide-co-glycolide) of specified low-medium molecular weight, by controlled hydrolysis of a higher molecular weight polyester.

REFERENCES:
patent: 3297033 (1967-01-01), Schmitt et al.
patent: 3773919 (1973-11-01), Boswell et al.
patent: 3839297 (1974-10-01), Wasserman et al.
patent: 4273920 (1981-06-01), Nevin
patent: 4443430 (1984-04-01), Mattei et al.
Makino et al., "Preparation and In Vitro Degradation Properties of Polylactide Microcapsules", Chem. Abst. 102,209367u (1985).

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