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公开(公告)号：EP4345140A1
公开(公告)日：2024-04-03
申请号：EP23195788.7
申请日：2023-09-06
IPC分类号： C09D11/00 , C09D11/326
摘要： The purpose of the present invention is to provide a dispersant which allows disperse dyes and pigments to be dispersed even in a small addition amount, and can exhibit wettability, a dispersion which can exhibit redispersibility, an ink composition including the foregoing, and a method for producing the foregoing.
The present invention provides a dispersant containing 50 to 99 wt% of (A) a styrene-ethyleneoxy group-containing (meth)acrylic acid-based copolymer having a weight average molecular weight of 1,000 to 50,000, the copolymer having a styrene content of 1 to 40 wt%, and (B) 1 to 50 wt% of an acetylene-based surfactant which is acetylene glycol or an ethoxylated substance of acetylene glycol having a specific chemical formula, a dispersion, an ink composition, and a method for producing the foregoing.-
2.发明公开
公开(公告)号：EP4206303A1
公开(公告)日：2023-07-05
申请号：EP21860955.0
申请日：2021-06-28
摘要： The present invention provides: a dispersing agent characterized by containing (A) 1-50 mass% of an acetylene-based surfactant that has a molecular weight of 500 or less and is at least one kind of compound selected from acetylene glycols represented by a specific formula and ethoxylated acetylene glycols represented by a specific formula, and (B) 50-99 mass% of a partially or fully-neutralized styrene/maleic anhydride copolymer salt that has a weight average molecular weight of less than 10,000, and that is a salt in which a styrene/maleic anhydride copolymer represented by a specific formula and derivatives thereof have been partially or fully neutralized; a dispersion element and ink composition that use said dispersing agent; and a manufacturing method for the same.
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