Aliphatic polyester and preparation process thereof

Details Aliphatic polyester and preparation process thereof Aliphatic polyester and preparation process thereof

1994-03-29

1995-03-28

Acquah, Samuel A.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528272, 528274, 528301, 528302, 528485, 528490, 524710, 524730, 524755, C08K 332

Patent

active

054017963

ABSTRACT:
A preparation process of aliphatic polyester having a weight average molecular weight of 15,000 or more by conducting a direct polycondensation reaction of an aliphatic polyhydric alcohol or a mixed aliphatic polyhydric alcohol and an aliphatic polybasic acid or a mixed aliphatic polybasic acid, or additionally a hydroxycarboxylic acid or a mixed hydroxycarboxylic acid or an oligomer of the hydroxycarboxylic acid in a reaction mixture containing an organic solvent.
The aliphatic polyester thus obtained contains an extremely small amount of impurities, has low color and can exhibit satisfactory strength in the form of films, filaments and other shaped articles.

REFERENCES:
patent: 5171308 (1992-12-01), Gallagher et al.
patent: 5295985 (1994-03-01), Romesser et al.
patent: 5310865 (1994-05-01), Enomoto et al.

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