THERMAL CROSSLINKING BINDER AQUEOUS SOLUTION FOR LITHIUM ION BATTERY, THERMAL CROSSLINKING SLURRY FOR LITHIUM ION BATTERY NEGATIVE ELECTRODE, NEGATIVE ELECTRODE FOR LITHIUM ION BATTERY, MATERIAL FOR LITHIUM ION BATTERY NEGATIVE ELECTRODE, AND LITHIUM ION BATTERY AND PRODUCTION METHOD THEREOF

To provide a thermal crosslinking binder aqueous solution for a lithium ion battery, a thermal crosslinking slurry for a lithium ion battery negative electrode, a negative electrode for a lithium ion battery, a material for a lithium ion battery negative electrode, and a lithium ion battery and production method thereof.SOLUTION: A thermal crosslinking binder aqueous solution for a lithium ion battery is provided according to a disclosure hereof comprises a water-soluble poly(meth)acrylamide (A) which is a polymer of a group of monomers containing (a) 2 to 60 mol% of a (meth)acrylamide group-containing compound (a) to 100 mol% of a group of monomers, (b) 10 to 50 mol% of one or more kinds of unsaturated acid selected from a group consisting of an unsaturated carboxylic acid and an unsaturated sulfonic acid, or an inorganic salt thereof, and (c) 15 to 78 mol% of a hydroxyalkyl (meth)acrylate having a hydroxyalkyl group having 2 to 4 carbon atoms. The thermal crosslinking binder aqueous solution is pH5 to pH7.SELECTED DRAWING: Figure 1 【課題】リチウムイオン電池用熱架橋性バインダー水溶液、リチウムイオン電池負極用熱架橋性スラリー、リチウムイオン電池用負極、リチウムイオン電池負極用材料、並びにリチウムイオン電池及びその製造方法を提供すること。【解決手段】本開示は、単量体群１００モル％に対して、（メタ）アクリルアミド基含有化合物（ａ）を２〜６０モル％、不飽和カルボン酸、及び不飽和スルホン酸からなる群から選択される１つ以上の不飽和酸又はその無機塩（ｂ）を１０〜５０モル％、並びに炭素数２〜４のヒドロキシアルキル基を有するヒドロキシアルキル（メタ）アクリレート（ｃ）を１５〜７８モル％含む単量体群の重合物である水溶性ポリ（メタ）アクリルアミド（Ａ）を含み、ｐＨが５〜７である、リチウムイオン電池用熱架橋性バインダー水溶液を提供する。【選択図】図１