US 12,269,968 B2
Low VOC water-borne colorant compositions with improved microbial resistance and method for assessing microbial resistance of colorant compositions
Jacob S. Donlon, Chesterton, IN (US); Donald Diehl, Beecher, IL (US); Patricia L. Olofsson-Elkow, Frankfort, IL (US); Renee Clayton, Crown Point, IN (US); Carl Braun, Fairview Park, OH (US); and Tony A. Rook, Lakewood, OH (US)
Assigned to SWIMC LLC, Cleveland, OH (US)
Filed by SWIMC LLC, Cleveland, OH (US)
Filed on Apr. 22, 2024, as Appl. No. 18/641,679.
Application 18/641,679 is a continuation of application No. PCT/US2022/078685, filed on Oct. 26, 2022.
Claims priority of provisional application 63/273,383, filed on Oct. 29, 2021.
Prior Publication US 2024/0279492 A1, Aug. 22, 2024
Int. Cl. C09D 7/41 (2018.01); C09B 67/22 (2006.01); C09D 5/02 (2006.01); C09D 7/45 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 167/06 (2006.01); C12Q 1/18 (2006.01)
CPC C09D 7/41 (2018.01) [C09B 67/004 (2013.01); C09D 5/022 (2013.01); C09D 5/028 (2013.01); C09D 7/45 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 167/06 (2013.01); C12Q 1/18 (2013.01)] 20 Claims
 
1. A colorant composition comprising:
an alkyl-isothiazolin-3-one in an amount from about 25 ppm to about 200 ppm based on the total weight of components of the composition, having a structure

OG Complex Work Unit Chemistry
where R1 is a linear or branched chain alkyl group having 1-8 carbons; and
a halo-propynyl alkylcarbamate having the structure

OG Complex Work Unit Chemistry
where R1 and R2 are H or linear or branched chain alkyl groups having 1-7 carbons, and where R3 is a halogen atom (F, Cl, Br, I, or At) in an amount from about 1,000 ppm to about 10,000 ppm based on the total weight of components of the composition; and
a secondary amino-benzimidazole having the structure

OG Complex Work Unit Chemistry
where R1 is a carboxylate or ester group in an amount from about 500 ppm to about 4,000 ppm based on the total weight of components of the composition;
wherein the colorant composition contains less than 200 g/L VOCs; and
wherein the colorant composition comprises one or more pigments and a carrier and is substantially free of a film-forming polymer;
and wherein the colorant composition is a colorant for tinting a base coating composition.