2-component paints based on unsaturated polyesters for the coati

Details 2-component paints based on unsaturated polyesters for the coati 2-component paints based on unsaturated polyesters for the coati

1995-08-28

1997-02-04

Michl, Paul R.

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...

4273722, 4273855, 427393, 428480, 428481, 428482, 524604, 525 10, 525 36, 525 40, 525 41, 525 42, 525 43, 525 49, 528303, C08J 300, C08K 320, C08L 6700, B05D 302

Patent

active

055998755

ABSTRACT:
Coating compositions and processes for coating wood and wood materials are described. The compositions comprise a first component comprising at least one reactive thinner and at least one unsaturated polyester, and a second component comprising a curing catalyst. The unsaturated polyester of the first component is the reaction product of: (a) a mixture of at least one saturated aliphatic dicarboxylic acid with 6 to 10 carbon atoms and at least one ethylenically unsaturated aliphatic dicarboxylic acid selected from maleic acid, fumaric acid, itaconic acid, citraconic acid, and mixtures thereof; (b) a diol component consisting of at least one of 1,4-dimethylolcyclohexane and substituted dimethylolcyclohexanes, with up to 50 mol % monomeric or oligomeric glycol, based on total moles of the diol component; and (c) up to 10 mol % of a polyol, based on total moles of polyester reactants. The compositions and processes of the invention result in coatings with improved hardness and aged cold crack resistance.

REFERENCES:
patent: 2879249 (1959-03-01), Raichle et al.
patent: 3674727 (1972-07-01), Fekete et al.

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