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公开(公告)号：EP4036657A2
公开(公告)日：2022-08-03
申请号：EP22150877.3
申请日：2022-01-11
摘要： A magnetic carrier includes: a magnetic core; and a coating resin that covers a surface of the magnetic core, wherein the coating resin includes a resin A and a resin B; a content of the resin A is 1 to 50% by mass, and a content of the resin B is 50 to 99% by mass, with respect to the coating resin; the resin A has a particular unit Y1 and a particular unit Y2, and the resin B contains 0.1% by mass or less of the particular unit Y2; and when a mass of the resin A is represented by X, a mass of the unit Y1 is represented by a, and a mass of the unit Y2 is represented by b, 0.90 ≤ (a+b)/X ≤ 1.00 and 1.00 ≤ a/b ≤ 30.0 are satisfied, and also 0 ≤ |SPa-SPb| ≤ 2.0 is satisfied.
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公开(公告)号：EP4036656A2
公开(公告)日：2022-08-03
申请号：EP22152919.1
申请日：2022-01-24
摘要： A magnetic carrier including: a magnetic core; and a coating resin that coats a surface of the magnetic core, wherein the resin coating layer has a thickness of 50 nm or more, a coating resin, which forms the resin coating layer, contains a resin S having an organosilicon polymer moiety, and when a surface and a position at a depth of 20 nm from the surface of the magnetic carrier are analyzed by X-ray photoelectron spectroscopy, an amount of silicon element as determined by the analysis has a ratio within a specific range at respective positions.
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公开(公告)号：EP4036655A2
公开(公告)日：2022-08-03
申请号：EP22152371.5
申请日：2022-01-20
摘要： The magnetic carrier is a magnetic carrier including a magnetic core and a coating resin configured to coat the surface of the magnetic core, wherein the coating resin contains a graft resin A and a graft resin B, wherein the coating resin (i) contains 1.0 mass% or more and 50.0 mass% or less of the graft resin A, and (ii) contains 50.0 mass% or more and 99.0 mass% or less of the graft resin B, wherein the graft resin A has a unit Y1 represented by the following formula (1) and a unit Y2 represented by the following formula (2), and wherein the graft resin B (i) is a comb-shaped polymer having, as a branch, at least one moiety selected from, for example, a styrene-based polymer moiety and a (meth)acrylate-based polymer moiety, and (ii) contains the polysiloxane structure moiety at a content of 0.1 mass% or less.
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公开(公告)号：EP4036655A3
公开(公告)日：2022-09-21
申请号：EP22152371.5
申请日：2022-01-20
摘要： The magnetic carrier is a magnetic carrier including a magnetic core and a coating resin configured to coat the surface of the magnetic core, wherein the coating resin contains a graft resin A and a graft resin B, wherein the coating resin (i) contains 1.0 mass% or more and 50.0 mass% or less of the graft resin A, and (ii) contains 50.0 mass% or more and 99.0 mass% or less of the graft resin B, wherein the graft resin A has a unit Y1 represented by the following formula (1) and a unit Y2 represented by the following formula (2), and wherein the graft resin B (i) is a comb-shaped polymer having, as a branch, at least one moiety selected from, for example, a styrene-based polymer moiety and a (meth)acrylate-based polymer moiety, and (ii) contains the polysiloxane structure moiety at a content of 0.1 mass% or less.
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公开(公告)号：EP2990874B1
公开(公告)日：2017-10-11
申请号：EP15182301.0
申请日：2015-08-25
CPC分类号： G03G9/1133 , G03G9/1075 , G03G9/1135
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公开(公告)号：EP2990874A1
公开(公告)日：2016-03-02
申请号：EP15182301.0
申请日：2015-08-25
CPC分类号： G03G9/1133 , G03G9/1075 , G03G9/1135
摘要： The present invention is a magnetic carrier that has a magnetic carrier core and a resin coat layer, wherein the resin coat layer contains a coat resin A and a coat resin B, the coat resin A is a polymer obtained by polymerization of a (meth)acrylate ester monomer that has an alicyclic hydrocarbon group, the coat resin B is a polymer obtained by polymerization of (meth)acrylic monomer and has a polar group and an acid value of 4.0 to 50.0 mg KOH/g, the content of the coat resin A is 10 to 90 mass%, the content of the coat resin B is 10 to 90 mass%, and an acid value of the resin component in the resin coat layer is 1.0 to 10.0 mg KOH/g.
摘要翻译： 本发明是具有磁性载体芯和树脂涂层的磁性载体，其中树脂涂层含有涂层树脂A和涂层树脂B，涂层树脂A是通过聚合（甲基）丙烯酸酯而获得的聚合物， 具有脂环族烃基的丙烯酸酯单体，涂料树脂B是通过聚合（甲基）丙烯酸类单体而得到的具有极性基团，酸值为4.0〜50.0mgKOH / g的聚合物，涂布树脂的含量 A为10〜90质量％，涂膜树脂B的含量为10〜90质量％，树脂涂层中的树脂成分的酸值为1.0〜10.0mgKOH / g。
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公开(公告)号：EP4036656A3
公开(公告)日：2022-09-21
申请号：EP22152919.1
申请日：2022-01-24
摘要： A magnetic carrier including: a magnetic core; and a coating resin that coats a surface of the magnetic core, wherein the resin coating layer has a thickness of 50 nm or more, a coating resin, which forms the resin coating layer, contains a resin S having an organosilicon polymer moiety, and when a surface and a position at a depth of 20 nm from the surface of the magnetic carrier are analyzed by X-ray photoelectron spectroscopy, an amount of silicon element as determined by the analysis has a ratio within a specific range at respective positions.
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公开(公告)号：EP4036657A3
公开(公告)日：2022-08-17
申请号：EP22150877.3
申请日：2022-01-11
摘要： A magnetic carrier includes: a magnetic core; and a coating resin that covers a surface of the magnetic core, wherein the coating resin includes a resin A and a resin B; a content of the resin A is 1 to 50% by mass, and a content of the resin B is 50 to 99% by mass, with respect to the coating resin; the resin A has a particular unit Y1 and a particular unit Y2, and the resin B contains 0.1% by mass or less of the particular unit Y2; and when a mass of the resin A is represented by X, a mass of the unit Y1 is represented by a, and a mass of the unit Y2 is represented by b, 0.90 ≤ (a+b)/X ≤ 1.00 and 1.00 ≤ a/b ≤ 30.0 are satisfied, and also 0 ≤ |SPa-SPb| ≤ 2.0 is satisfied.
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9.发明授权
公开(公告)号：EP2808738B1
公开(公告)日：2019-03-27
申请号：EP14169946.2
申请日：2014-05-27
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