親水化処理剤

Hydrophilization treatment agent

Abstract

PROBLEM TO BE SOLVED: To provide a hydrophilization treatment agent excellent in ability of hydrophilizing a solid surface, enabling slippage of the solid surface after being treated to be suppressed and excellent in dissolubility and dispersibility into water, and a hydrophilization treatment agent composition containing the hydrophilization treatment agent.SOLUTION: The hydrophilization treatment agent is provided which is composed of a block polymer having a polymer segment A composed of a special constituent unit (1) derived from a hydrophobic unsaturated monomer and a polymer segment B composed of a random polymer containing the special constituent unit (1) derived from a hydrophobic unsaturated monomer and a specific constituent unit (2) derived from a sulfobetaine group, the content of the polymer segment A in the block polymer being 2 mass% to 14 mass% and the content of the constituent unit (1) in the polymer segment B being 5 mass% to 30 mass%.SELECTED DRAWING: None
【課題】固体表面の親水化能力に優れ、処理後の固体表面のすべりを抑制でき、且つ水への溶解性ないし分散性にも優れた親水化処理剤及びそれを含有する親水化処理剤組成物を提供する。 【解決手段】疎水性不飽和単量体に由来する特定の構成単位(1)からなる重合体セグメントAと、疎水性不飽和単量体に由来する特定の構成単位(1)及びスルホベタイン基を有する特定の構成単位(2)を含むランダム重合体からなる重合体セグメントBとを有するブロック重合体からなる親水化処理剤であって、ブロック重合体中の重合体セグメントAの含有量が2質量%以上14質量%以下であり、重合体セグメントB中の構成単位(1)の含有量が5質量%以上30質量%以下である、親水化処理剤。 【選択図】なし

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