WATER ABSORPTIVE POLYMER SHEET
PROBLEM TO BE SOLVED: To provide a water absorptive polymer sheet having high transparency before and after water absorption.MEANS FOR SOLVING THE PROBLEM: A water absorptive polymer sheet contains (meth)acrylamide-based quaternary ammonium salt monomer unit of the formula (1) and a hydrophilic mono...
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Main Author | |
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Format | Patent |
Language | English Japanese |
Published |
16.05.2016
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide a water absorptive polymer sheet having high transparency before and after water absorption.MEANS FOR SOLVING THE PROBLEM: A water absorptive polymer sheet contains (meth)acrylamide-based quaternary ammonium salt monomer unit of the formula (1) and a hydrophilic monomer unit and has a haze degree of 8% or less. Formula (1), where Rand Rare each independently a hydrogen atom or a lower alkyl group, Rand Rare lower alkyl group, Ris a lower alkyl group, a lower alkenyl group or a benzyl group, A is a lower alkylene group and Xis a halogen anion or a perchlorate anion.SELECTED DRAWING: None
【課題】吸水前後で高い透明性を有する吸水性ポリマーシートを提供する。【課題を解決するための手段】吸水性ポリマーシートは、式(1)の(メタ)アクリルアミド系第4級アンモニウム塩モノマー単位と親水性モノマー単位とを含有し、8%以下のヘイズ度を有する。【化1】式(1)中、R1及びR2はそれぞれ独立的に水素原子又は低級アルキル基である。R3及びR4は低級アルキル基であり、R5は低級アルキル基、低級アルケニル基又はベンジル基であり、Aは低級アルキレン基であり、X−はハロゲンアニオン又は過塩素酸アニオンである。【選択図】なし |
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Bibliography: | Application Number: JP20140210727 |