Polyglycolic acid sheet and production process thereof

Details Polyglycolic acid sheet and production process thereof Polyglycolic acid sheet and production process thereof

1997-04-18

1999-06-01

Truong, Duc

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

Synthetic resins

From carboxylic acid or derivative thereof

528425, 528503, 525419, 525420, 521 79, 264 461, 264 462, 264 75, 264 77, 264160, 264239, C08G 6308

Patent

active

059089172

ABSTRACT:
The invention provides a polyglycolic acid sheet obtainable by melt-extruding a thermoplastic resin material into a sheet in a temperature range of from the melting point, Tm of the polymer to 255.degree. C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1): ##STR1## measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec! being 500-100,000 Pa.s;

REFERENCES:
patent: 2668162 (1954-02-01), Lowe
patent: 2676945 (1954-04-01), Higgins
patent: 5502158 (1996-03-01), Sinclair et al.
D.K. Gilding et al (1979) Polymer, vol. 20, pp. 1459-1463.
European Search Report for Application No. 97302906.9 dated Sep. 4, 1997.

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