公开(公告)号：EP3437707B1

公开(公告)日：2022-07-06

申请号：EP17774771.4

申请日：2017-03-24

发明人： ARIMOTO, Yuta

IPC分类号： B01D21/01 ,  C02F1/52 ,  C02F103/14

公开(公告)号：EP3050851B1

公开(公告)日：2021-03-24

申请号：EP14849253.1

申请日：2014-09-18

发明人： MORITA,Akira

IPC分类号： C02F1/50 ,  A01N43/80 ,  A01N59/02 ,  A01P3/00 ,  A01P13/00 ,  C02F1/76

公开(公告)号：EP3121152B1

公开(公告)日：2021-03-17

申请号：EP15765351.0

申请日：2015-03-17

发明人： YOSHIDA, Tsuneyuki ,  ARIMOTO, Yuta ,  YASUKAWA, Yoshio ,  ONOUE, Satoshi

IPC分类号： C02F1/58 ,  B05D3/00 ,  C02F1/52 ,  C02F1/56 ,  C09D7/00 ,  C02F1/54 ,  B01D21/01 ,  B05B14/40 ,  C02F103/14 ,  C08K3/22 ,  C08K5/134 ,  C08K3/26

公开(公告)号：EP3486368B1

公开(公告)日：2020-08-26

申请号：EP17850457.7

申请日：2017-03-14

申请人： Kurita Water Industries Ltd.

发明人： CHEN, Jiayi

IPC分类号： D21H17/37 ,  C08F8/00 ,  C08F20/56 ,  D21H17/56

公开(公告)号：EP3309129B1

公开(公告)日：2020-07-15

申请号：EP15894954.5

申请日：2015-06-11

申请人： Kurita Water Industries Ltd.

发明人： MATSUMOTO, Yukitaka ,  KOBAYASHI, Hideki

IPC分类号： C02F1/461 ,  C02F1/467 ,  C02F1/02 ,  C02F101/30

公开(公告)号：EP3593896A1

公开(公告)日：2020-01-15

申请号：EP18763916.6

申请日：2018-02-28

申请人： Kurita Water Industries Ltd.

发明人： ISHII, Kazuki

IPC分类号： B01D65/06 ,  B01D71/56 ,  C11D1/02 ,  C11D3/20 ,  C11D17/00

摘要： A solution-type water treatment chemical, comprising, as one, gluconic acid (salt) and a surfactant having an HLB determined by the following equation (1) satisfying the following equation (2), wherein in a relationship between concentrations of the gluconic acid (salt) and the surfactant and a molecular weight and HLB of the surfactant, the gluconic acid (salt) and the surfactant are contained such that the water treatment chemical does not form a gel or precipitate. HLB = Σ inorganic value / Σ organic value × 10 Molecular weight > − 34.4 × HLB + 1005

公开(公告)号：EP3587359A1

公开(公告)日：2020-01-01

申请号：EP17898264.1

申请日：2017-09-14

申请人： Kurita Water Industries Ltd.

发明人： YOSHIDA, Tsuneyuki

IPC分类号： C02F1/56 ,  B01D21/01 ,  B05D1/02 ,  C02F1/52

摘要： A method for treating a wet-painting booth circulation water, comprising, into somewhere along a path for a wet-painting booth circulation water supplied from a water tank to a painting booth for collecting an unapplied paint and then returned to the water tank, adding a treatment agent to a wet-painting booth circulation water so as to detackify the unapplied paint collected in the circulation water, wherein the treatment agent comprises a cellulose acetate solution.

公开(公告)号：EP2982655B1

公开(公告)日：2019-11-13

申请号：EP14779849.0

申请日：2014-03-27

申请人： Kurita Water Industries Ltd.

发明人： SAKAI, Mizuyuki ,  SHIMURA, Yukimasa

IPC分类号： C02F5/10 ,  C02F5/00 ,  F22B37/52 ,  C02F1/66 ,  C11D3/37 ,  C11D11/00 ,  C23F11/173 ,  C23F14/02

公开(公告)号：EP2684598B1

公开(公告)日：2019-05-01

申请号：EP12755214.9

申请日：2012-03-05

申请人： Kurita Water Industries Ltd.

发明人： KAWAKATSU, Takahiro ,  AOKI, Tetsuya ,  HAYAKAWA, Kunihiro

IPC分类号： B01D65/10 ,  B01D61/02 ,  B01D67/00

公开(公告)号：EP3450590A1

公开(公告)日：2019-03-06

申请号：EP17789112.4

申请日：2017-03-14

申请人： Kurita Water Industries Ltd.

发明人： NAGAI, Tatsuo ,  YAMAMOTO, Yuzuki

IPC分类号： C23C18/24 ,  C25B1/30 ,  C25B15/08

摘要： Provided is a Cr-free plastic surface treatment method which can provide a plating film sufficiently adhered to a plastic surface. The plastic surface treatment method comprises treating plastic with a solution obtained by electrolyzing sulfuric acid. It is preferable that the sulfuric acid concentration of the sulfuric acid solution is 50 to 92 wt%, the persulfuric acid concentration is not less than 3 g/L, and the treatment temperature is not lower than 80°C, for example, 80 to 140°C, particularly 100 to 130°C. By immersing plastic in this sulfuric acid solution for 1 minute to 10 minutes, hydrophilic functional groups are exposed on the surface of the plastic.