Discoloration prevention in pyrithione-containing coating compos

Details Discoloration prevention in pyrithione-containing coating compos Discoloration prevention in pyrithione-containing coating compos

1997-02-21

1999-08-17

Ceperley, Mary E.

Stock material or miscellaneous articles

Composite

Of metal

106 1833, 106 1834, 106 1836, 428472, B32B 1504

Patent

active

059392037

ABSTRACT:
Disclosed is an aqueous coating composition comprising: (a) water, (b) a base medium, (c) a pyrithione salt, in an amount of from 0.01% to 2.0% based upon the weight of the composition, and (d) zinc oxide compound selected from the many grades suitable for paint manufacture at a concentration of from 0.001% to 10% based upon the weight of the coating composition. Also disclosed is an aqueous antimicrobial coating composition, characterized by antimildew efficacy and protected against discoloration attributable to the presence of pyrithione therein, said composition being selected from the group consisting of water-based paints, adhesives, caulks and sealants, and combinations thereof, said composition comprising water, a pyrithione salt or acid, an organic base medium and a zinc compound, said zinc ion being present in said composition in an amount of from 0.001% to 10% based upon the weight of the coating composition.

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patent: 4565856 (1986-01-01), Trotz et al.
patent: 4818436 (1989-04-01), French et al.
patent: 4957658 (1990-09-01), French et al.
patent: 5518774 (1996-05-01), Kappock et al.
patent: 5562995 (1996-10-01), Kappock et al.

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