Method for preparing polyhydroxycarboxylic acid resin

Details Method for preparing polyhydroxycarboxylic acid resin Method for preparing polyhydroxycarboxylic acid resin

1996-07-02

1998-03-31

Truong, Duc

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

Synthetic resins

From carboxylic acid or derivative thereof

528354, 528357, 528361, C08G 6926

Patent

active

057340072

ABSTRACT:
There is provided a method for easily preparing a polyhydroxycarboxylic acid resin in a one pot reaction by adding 1,3-substituted-1,1,3,3-tetraorganodistanoxan as a polymerization catalyst to a hydroxycarboxylic acid, such as L-lactic acid containing 10 to 50% of water as a starting material, and stirring while heating under a reduced pressure condition or in an organic solvent.

REFERENCES:
patent: 5386004 (1995-01-01), Obuchi et al.

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