发明名称 |
W/O emulsion ink for inkjet |
摘要 |
A water-in-oil (W/O) emulsion ink which is suitable for use in inkjet printing and is superior in ejection performance and storage stability and low in viscosity is provided. A water-in-oil (W/O) emulsion ink which comprises a polyglycerin with a polymerization degree of not less than 3 in a water phase is provided. As an emulsifier, a polyglycerin fatty acid ester with an HLB value of 7-14 in which fatty acid moiety is oleic acid or isostearic acid, or a polyoxyethylene sorbit fatty acid ester is preferably used. The concentration of the polyglycerin in the water phase is preferably 10-70 mass % relative to 100 mass % of the whole water phase. The polymerization degree of the polyglycerin is preferably not less than 4. |
申请公布号 |
US8999049(B2) |
申请公布日期 |
2015.04.07 |
申请号 |
US201213543016 |
申请日期 |
2012.07.06 |
申请人 |
Riso Kagaku Corporation |
发明人 |
Ezaki Naofumi;Ando Kazuyuki;Shimura Shinichiro |
分类号 |
C09D11/02;C09D11/30;C09D11/023 |
主分类号 |
C09D11/02 |
代理机构 |
Fitch, Even, Tabin & Flannery LLP |
代理人 |
Fitch, Even, Tabin & Flannery LLP |
主权项 |
1. A water-in-oil (W/O) emulsion ink for inkjet comprising a water phase and an oil phase, wherein the water phase comprises a polyglycerin with a polymerization degree of not less than 3. |
地址 |
Tokyo JP |