Pigment dispersion

US10836910B2 · kind B2 · utility

Inventors

• David R. Wallace · San Francisco, US
• T. Howard Killilea · Minneapolis, US
• Stephen M. Korenkiewicz · Lake Zurich, US
• Thomas J. Melnyk · Greenfield, US
• Danny G. Hartinger · Columbus, US
• Jason S. Ness · Woodbury, US
• Jacob S. Donlon · Prospect, US
• Mark R. Coward · Jeffersonville, US

Key dates

• Filing date: Apr 1, 2016
• Grant date: Nov 17, 2020
• Expiry date: Jul 6, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/63
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Fluid concentrates, colorants and coating compositions contain solid pigment particles dispersed in a nonvolatilizing, reactive liquid diluent having a viscosity less than 1,000 cps and containing at least one molecular species having at least three reactive unsaturated sites. The reactive liquid diluent may serve as one or more of a dispersing medium for the solid pigment particles, a carrier, a coalescent and a humectant, and may crosslink or otherwise cure to form an interpenetrating polymer network in, or crosslink with, a pigmented coating composition containing a film-forming polymeric binder. Embodiments of the reactive liquid diluent can provide colorants and coating compositions having reduced levels of VOCs, conventional carriers, conventional dispersants, conventional coalescents and conventional humectants.