Method of preparing condensation polymers by emulsion polymeriza

Details Method of preparing condensation polymers by emulsion polymeriza Method of preparing condensation polymers by emulsion polymeriza

1998-01-27

1999-01-05

Acquah, Sam 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...

528274, 528302, 528303, 528307, 528308, 525437, 525448, 524601, 524742, 524745, 524755, C08F 216, C08G 6378

Patent

active

058564012

ABSTRACT:
A method wherein polyesters are prepared under mild conditions by directly condensing hydroxycarboxylic acids or mixtures of polyfunctional alcohols and carboxylic acids in hydrophobic media using heterogeneous catalysts that can form a hydrophilic phase. The systems are inverse emulsions, inverse microemulsions and solid-in-liquid dispersions.

REFERENCES:
patent: 4355154 (1982-10-01), Saam et al.
patent: 4374953 (1983-02-01), Chou et al.

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