Method for treating polyester resin system with organic acid to

Details Method for treating polyester resin system with organic acid to Method for treating polyester resin system with organic acid to

1979-07-27

1981-12-08

Ziegler, J.

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

260 16, 260 28R, 260 40R, 525 13, 525 25, 525 27, 525 39, 525 49, C08G 6376

Patent

active

043048781

ABSTRACT:
A method is disclosed for treating polyester resin systems to suppress gel-time drift for the useable storage life of the resin system. The method comprises contacting a solution containing a polyester binder with an organic acid either between formulation stages or after formulation of the resin system. Typically useful organic acids include aromatic dicarboxylic acids such as phthalic acid and unsaturated aliphatic dicarboxylic acids such as fumaric acid. Comparative data for gel times of polyester resin system samples treated according to the disclosed method show suppression of gel-time drift to as low as 6 percent of the gel-time drift of counterpart untreated resin system samples.

REFERENCES:
patent: 2664413 (1953-12-01), Parker

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