Solventless coatings based on low-viscosity polyesters

Details Solventless coatings based on low-viscosity polyesters Solventless coatings based on low-viscosity polyesters

1998-01-22

1999-07-13

Acquah, Samuel A.

Stock material or miscellaneous articles

Composite

Of polyester

5282955, 528300, 528301, 528302, 528303, 528306, 528307, 528308, 5283086, 525437, 525440, 525441, 525443, 5254445, 525447, 525448, 525539, 524 81, 524800, 428480, 501 14, B32B 2710, C08G 6348

Patent

active

059224746

ABSTRACT:
The present invention relates to polyesters formed by reacting components comprising: (a) from about 20 to about 45 mol% of a diol; (b) from about 4 to about 25 mol% of a polyol; (c) from about 5 to about 25 mol% of a diacid; (d) up to 6 mol% of an ethylenically unsaturated anhydride; and (e) from about 35 to about 45 mol% of a monofunctional fatty acid, where all mole percentages are based on the total mols of (a), (b), (c), (d) and (e). Further, the present invention is directed to liquid enamel compositions comprising: (1) from about 50 to about 90 wt. % of a polyester of the present invention; (2) about 10 to about 50 wt. % of a crosslinking agent; and (3) less than about 20 wt. % of a suitable organic solvent; where all weight percentages are based on the total weight of (1), (2) and (3). The liquid enamel compositions of the present invention have a viscosity of 50 to 1,000 mPa s (cP) at room temperature.

REFERENCES:
patent: 3994851 (1976-11-01), Chang
patent: 4222911 (1980-09-01), Christenson et al.
patent: 4251406 (1981-02-01), Heiberger

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