Process for preparing polyester resins cured at low temperature

Details Process for preparing polyester resins cured at low temperature Process for preparing polyester resins cured at low temperature

1990-12-12

1993-11-16

Foelak, Morton

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528272, 528296, 528297, 528300, 528307, 528308, C08G 5906, C08G 63123, C08G 63127

Patent

active

052625109

ABSTRACT:
A process for preparing polyester resins comprises (1) reacting a mixture of organic carboxylic monomers having at least two reactive carboxyl groups with a mixture composed of at least two aliphatic alcohols having at least two hydroxyl groups to form a prepolymer, and (2) reacting the prepolymer with a mixture composed of pyromellitic dianhydride and adipic acid or azelaic acid to form polyester resins.

REFERENCES:
patent: 4731422 (1988-03-01), Tanabe et al.
patent: 4804581 (1989-02-01), Geary et al.

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