JP2015038227A5

JP2015038227A5 -

Info

Publication number: JP2015038227A5
Application number: JP2014238530A
Authority: JP
Filing date: 2014-11-26
Publication date: 2015-04-16
Anticipated expiration: 2031-03-29

Description

＜比較例２＞
還流冷却管、攪拌機を備えた容量３００ｍＬのガラス製セパラブルフラスコに純水４５．０ｇおよびモール塩０．００５３ｇを仕込み、攪拌下７０℃に昇温した後、メタクリル酸２−ヒドロキシエチル（以下、ＨＥＭＡと称す。）２４．０ｇ、８０重量％アクリル酸水溶液（以下、８０％ＡＡと称す。）７０．０ｇ、４８重量％水酸化ナトリウム水溶液（以下、４８％ＮａＯＨと称す。）３．２ｇ、純水２２．７ｇ、１５重量％過硫酸ナトリウム（以下、１５％ＮａＰＳと称す。）１９．２ｇ、および、３５重量％亜硫酸水素ナトリウム（以下、３５％ＳＢＳと称す。）８．２ｇをそれぞれ別の滴下口より滴下した。それぞれの滴下時間は、ＨＥＭＡが１５０分間、８０％ＡＡ、４８％ＮａＯＨ、３５％ＳＢＳ、および純水が１８０分間、１５％ＮａＰＳが２００分間とした。なお滴下開始はすべて同時とした。ＨＥＭＡ、８０％ＡＡ、４８％ＮａＯＨ、３５％ＳＢＳ、および純水の滴下終了までの間、温度は７０℃を維持した。さらに同温度を１５％ＮａＰＳの滴下終了後、３０分間にわたって維持して熟成を行い、重合を完結した。重合の完結後、反応溶液を放冷してから、４８％ＮａＯＨ５９．６ｇを加えて中和した。このようにして、固形分濃度４１重量％、最終中和度９７ｍｏｌ％の共重合体を得た。
重合処方を表１に、重合結果を表２にまとめた。 <Comparative Example 2>
A 300 mL glass separable flask equipped with a reflux condenser and a stirrer was charged with 45.0 g of pure water and 0.0053 g of a Mole salt, heated to 70 ° C. with stirring, and then 2-hydroxyethyl methacrylate (hereinafter, 24.0 g, 80% by weight acrylic acid aqueous solution (hereinafter referred to as 80% AA) 70.0 g, 48% by weight sodium hydroxide aqueous solution (hereinafter referred to as 48% NaOH) 3.2 g, Separately, 22.7 g of pure water, 19.2 g of 15% by weight sodium persulfate (hereinafter referred to as 15% NaPS), and 8.2 g of 35% by weight sodium bisulfite (hereinafter referred to as 35% SBS) It was dripped from the dripping port. The dropping time of HEMA was 150 minutes, 80% AA, 48% NaOH, 35% SBS, and pure water were 180 minutes, and 15% NaPS was 200 minutes. The start of dropping was all simultaneous. The temperature was maintained at 70 ° C. until the end of dropping of HEMA, 80% AA, 48% NaOH, 35% SBS , and pure water. Further, after the dropwise addition of 15% NaPS, the same temperature was maintained for 30 minutes for aging to complete the polymerization. After completion of the polymerization, the reaction solution was allowed to cool and then neutralized by adding 59.6 g of 48% NaOH. Thus, a copolymer having a solid content concentration of 41% by weight and a final neutralization degree of 97 mol% was obtained.
The polymerization formulation is summarized in Table 1, and the polymerization results are summarized in Table 2.

Claims

1% by mass or more and 89% by mass or less of hydroxypropyl (meth) acrylate (A) -derived structural unit (a),
10% by mass or more and 98% by mass or less of the structural unit (b) derived from the carboxyl group-containing monomer (B),
And a structural unit (c) derived from the sulfonic acid group-containing monomer (C) represented by the following general formula (C1) of 1% by mass or more and 89% by mass or less as an essential structural unit, and having a weight average A copolymer having a molecular weight of 11,000 to 200,000.

In General Formula (C1), R ₁ represents a single bond, CH ₂ , or CH ₂ CH ₂ structure, R ₂ represents a hydrogen atom or a methyl group, and X and Y represent a hydroxyl group or SO _3. M represents a group, and in the SO ₃ M group, M represents a hydrogen atom, Li, Na or K, provided that either X or Y represents a SO ₃ M group.

1% by mass or more and 89% by mass or less of hydroxypropyl (meth) acrylate (A) with respect to 100% by mass of all monomers,
10% by mass or more and 98% by mass or less of the carboxyl group-containing monomer (B),
And a sulfonic acid group-containing monomer (C) represented by the following general formula (C1) of 1% by mass or more and 89% by mass or less is copolymerized as essential, and the weight average molecular weight is 11,000 to 200,000. A method for producing a copolymer, comprising producing a copolymer.

In General Formula (C1), R ₁ represents a single bond, CH ₂ , or CH ₂ CH ₂ structure, R ₂ represents a hydrogen atom or a methyl group, and X and Y represent a hydroxyl group or SO _3. represents an M group, in SO ₃ M group, M represents a hydrogen atom, Li, Na or K, provided that, X, is either Y, represents a SO ₃ M group.

A detergent builder comprising the copolymer according to claim 1.

A detergent composition comprising a surfactant in a proportion of 10 to 60% by mass, the detergent composition comprising the copolymer according to claim 1 as a detergent builder.