Copolymers of D,L-lactide and epsilon caprolactone

Details Copolymers of D,L-lactide and epsilon caprolactone Copolymers of D,L-lactide and epsilon caprolactone

1975-01-28

1977-08-30

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

156327, 260 9, 260 13, 260857R, 260874, C08G 6308, C08G 6310

Patent

active

040454185

ABSTRACT:
Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically inactive lactide, i.e., D,L-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 85 parts by weight of D,L-lactide and 15 parts by weight of epsilon caprolactone is a thermoplastic elastomer. A copolymer prepared from 90 parts by weight of D,L-lactide and 10 parts by weight of epsilon caprolactone is a rigid, clear, thermoplastic solid.

REFERENCES:
patent: 2703316 (1955-03-01), Schneider
patent: 2758987 (1956-08-01), Salzberg
patent: 2890208 (1959-06-01), Young
patent: 3284417 (1966-11-01), Hostettler et al.
patent: 3531561 (1970-12-01), Trehu
patent: 3636956 (1972-01-01), Schneider
patent: 3736646 (1973-06-01), Schmitt et al.
patent: 3839297 (1974-10-01), Wasserman et al.
patent: 3844987 (1974-10-01), Clendinning et al.

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