Patent ID: 8795421
Filing Date: 2014-08-05
Classification: C09D

Abstract:
1. A water-in-oil (W/O) emulsion ink for inkjet, having a water phase dispersed in an oil phase by utilizing a polyglyceryl fatty acid ester (A) and a nonionic surfactant (B) as emulsifiers, in which the fatty acid moiety of the polyglyceryl fatty acid ester (A) is oleic acid or isostearic acid, and the polyglyceryl fatty acid ester (A) has an HLB value of 7-14 and a glycerol polymerization degree of not less than 4, and the nonionic surfactant (B) is at least one selected from the group consisting of: (B-a) an esterification product of an organic compound with 3-5 hydroxyl groups and a fatty acid with 18 carbon atoms; (B-b) an alkyl glyceryl ether; (B-c) a diterpene alcohol; and (B-d) a sucrose fatty acid ester having an HLB value of not more than 13.