Patent ID: 9371457
Filing Date: 2016-06-21
CPC Classification: C09D

Claim Text:
1. A stable color-changing ink, comprising the following components in parts by weight: 10 to 60 parts of water, 0.1 to 2 parts of a pH regulator, 0.1 to 1 part of a corrosion inhibitor, 0.1 to 3 parts of a dispersant, the dispersant being a water-based polyurethane dispersant, 0.1 to 3 parts of an emulsion type lubricant, 0.5 to 10 parts of a water soluble resin, 10 to 50 parts of a microcapsule color-changing pigment, and 0.1 to 3 parts of a thickener; wherein the microcapsule color-changing pigment is an aqueous emulsion of a microcapsule pigment, or a mixture of an aqueous emulsion of a microcapsule pigment and a common pigment paste, or a mixture of an aqueous emulsion of a microcapsule pigment and a dye; and wherein the aqueous emulsion of a microcapsule pigment comprises one or more selected from a thermochromic microcapsule pigment, a photochromic microcapsule pigment, and a pressure-sensitive microcapsule pigment.