Process for the synthesis of lactic acid polymers in the solid s

Details Process for the synthesis of lactic acid polymers in the solid s Process for the synthesis of lactic acid polymers in the solid s

1993-09-30

1994-10-25

Foelak, Morton

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

Synthetic resins

From carboxylic acid or derivative thereof

525415, 525450, 528357, 528361, C08G 6308

Patent

active

053590279

ABSTRACT:
Polymers and copolymers of L(+) and D(-) lactic acid, with high molecular weight and in the absence of catalysts, are prepared by upgrading low molecular weight polymers in the solid state.

REFERENCES:
patent: 4273920 (1992-06-01), Nevin
patent: 4644038 (1987-02-01), Protzman
patent: 4677191 (1987-06-01), Tanaka et al.
patent: 4849228 (1989-07-01), Yamamoto et al.
patent: 4960866 (1990-10-01), Bendix et al.

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