Copolymers of L-(-)-lactide and epsilon caprolactone

Details Copolymers of L-(-)-lactide and epsilon caprolactone Copolymers of L-(-)-lactide and epsilon caprolactone

1975-01-28

1977-11-08

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 6308

Patent

active

040575373

ABSTRACT:
Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically active lactide, i.e., L-(-)-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 75 parts by weight of L-(-)-lactide and 25 parts by weight of epsilon caprolactone is a thermoplastic elastomer. A copolymer prepared from 90 parts by weight of L-(-)-lactide and 10 parts by weight of epsilon caprolactone is a rigid, clear, thermoplastic solid.

REFERENCES:
patent: 2362511 (1944-11-01), Teeters
patent: 2683136 (1954-07-01), Higgins
patent: 2703316 (1955-03-01), Schneider
patent: 3169945 (1965-02-01), Hostettler et al.
patent: 3284417 (1966-11-01), Hostettler et al.
patent: 3636956 (1972-01-01), Schneider
patent: 3736646 (1973-06-01), Schmitt et al.
patent: 3839297 (1974-10-01), Wassermann et al.

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