公开(公告)号：EP1150923B1

公开(公告)日：2007-02-28

申请号：EP00993317.7

申请日：2000-12-11

申请人： R. SPÄNE KG

发明人： NÜRNBERGER, Michael ,  NUSKO, Robert ,  MAIER, Georg

IPC分类号： C02F5/08 ,  C02F5/14

CPC分类号： C02F5/105 ,  C02F1/66 ,  C02F1/683 ,  C02F1/70 ,  C02F1/722 ,  C02F5/08 ,  C02F5/145 ,  C02F2103/023 ,  C02F2305/04 ,  C23F14/02 ,  C23G1/065 ,  C23G1/066 ,  C23G1/26

摘要： The invention relates to a method for removing deposits from water transmission systems and devices for supplying water, or individual components thereof. Deposits are dissolved using an aqueous treating solution and are separated in dissolved form from the system or the device or individual components thereof, wherein said deposits are dissolved using an aqueous treatment solution comprising a combination of (i) a reducing agent, in particular in the form of a salt-like, reducing sulfur-oxide compound, nitrogen oxide compound or phosphorous oxide compound and (ii) a complexing agent having phosphonic acid or phosphonate groups or a complexing agent of the hydroxy acid type at pH values in the range of approximately 4.5 to 9.5, in particular from approximately 6.0 to 8.0.

公开(公告)号：EP0812808B1

公开(公告)日：2003-08-27

申请号：EP97610023.0

申请日：1997-06-11

申请人： CLEANTABS A/S

发明人： Pedersen, Keld Winther

IPC分类号： C02F5/10

CPC分类号： C02F5/105

公开(公告)号：EP1196033A2

公开(公告)日：2002-04-17

申请号：EP00937966.0

申请日：2000-06-01

申请人： Water Whole International, Inc.

发明人： SCHULHOFF, Jeffrey ,  SCHALL, Christian

IPC分类号： A01N59/00

CPC分类号： A61L2/186 ,  A01N37/16 ,  A01N59/00 ,  A61L2202/17 ,  C02F5/105 ,  C11D3/3945 ,  C11D3/48 ,  C11D7/08 ,  C11D7/261 ,  C11D7/263 ,  C11D7/265 ,  C11D7/3227 ,  C11D7/34 ,  C11D7/36 ,  C23G1/02 ,  A01N59/26 ,  A01N2300/00

摘要： A composition and method for cleaning surfaces having deposits, such as drink water tanks, supply water wells, water filtration systems, and distributor water lines. The composition contains in combination a cleaning solution and a disinfectant, such as hydrogen peroxide or peracidic acid. The cleaning solution can include hydrochloric acid and/or phosphoric acid in combination with inhibitors, dyes and water. The composition is applied to deposits which have formed on these surfaces.

公开(公告)号：EP0554074B1

公开(公告)日：1997-08-06

申请号：EP93300587.8

申请日：1993-01-27

申请人： BetzDearborn Europe, Inc.

发明人： Chen, Fu ,  Boyette, Scott Martell ,  Bair, Keith Alan

IPC分类号： C02F5/10

CPC分类号： C02F5/10 ,  C02F5/105

公开(公告)号：EP0784599A1

公开(公告)日：1997-07-23

申请号：EP95936213.0

申请日：1995-09-29

申请人： ASHLAND INC.

发明人： BEARDWOOD, Edward, S.

IPC分类号： C02F5 ,  C23F11 ,  C23F14

CPC分类号： C02F5/105 ,  C02F5/125 ,  C23F11/08 ,  C23F11/10

摘要： This invention relates to a metal corrosion inhibiting composition comprising in admixture: (a) an anodic silicate salt; (b) a silicate salt stabilizer; (c) a cathodic corrosion inhibitor; and water. Preferably, the corrosion inhibiting composition also contains a polymeric scale inhibitor. The invention also relates to a process for treating an open aqueous system with the corrosion inhibiting composition.

公开(公告)号：EP0662931A1

公开(公告)日：1995-07-19

申请号：EP93920770.0

申请日：1993-09-20

申请人： Henkel Kommanditgesellschaft auf Aktien

发明人： SPRINGER, Sieglinde ,  SCHRÖDER, Karl-Heinz ,  WERSHOFEN, Thomas

IPC分类号： C02F5 ,  C23G1

CPC分类号： C02F5/105 ,  C23G1/088

摘要： The invention concerns the use, to remove magnetite deposits in water-supply systems, of a combination of (a) at least one phosphonic acid; (b) at least one oxidizing agent; and (c) at least one short-chain organic carboxylic acid selected from the group comprising ascorbic acid, tartaric acid, formic acid, oxalic acid and citric acid; in acid aqueous solutions with a pH between 0 and 3. The total amount of (a) plus (b) is 1 to 10 % by wt., relative to the aqueous solution, and the ratio by weight of (a) to (b) is in the region of 5:1 to 1:10 while the ratio by weight of (a) plus (b) to (c) is in the region of 5:1 to 1:5.

公开(公告)号：EP0554074A1

公开(公告)日：1993-08-04

申请号：EP93300587.8

申请日：1993-01-27

申请人： BETZ EUROPE, INC.

发明人： Chen, Fu ,  Boyette, Scott Martell ,  Bair, Keith Alan

IPC分类号： C02F5/10

CPC分类号： C02F5/10 ,  C02F5/105

摘要： A method for controlling the deposition of scale imparting precipitates on the structural surfaces or hardness in steam generating systems comprising the use of a water soluble polymer having the structure

wherein E is the repeat unit remaining after polymerization of an alpha, beta ethylenically unsaturated compound.
This polymer may also be used in concert with topping agents such as, for example, phosphoric acids, phosphonic acids, polyvalent metal salts, metal chelating agents and oxygen scavengers.

摘要翻译： 一种用于控制在蒸汽发生系统中在结构表面或硬度上赋予沉积物的沉积物的方法，其包括使用具有结构的水溶性聚合物，其中E是在α，β烯键式不饱和聚合之后残留的重复单元 复合。 该聚合物也可以与顶级剂一起使用，例如磷酸，膦酸，多价金属盐，金属螯合剂和除氧剂。

公开(公告)号：EP0313157B1

公开(公告)日：1992-06-03

申请号：EP88202304.7

申请日：1988-10-14

申请人： CALGON CORPORATION

发明人： Sinkovitz, Gloria D. ,  Hipolit, Kevin J.

IPC分类号： C02F5/14 ,  C02F5/02 ,  C02F5/10

CPC分类号： C02F5/105

公开(公告)号：EP0142929B1

公开(公告)日：1989-06-07

申请号：EP84306786.9

申请日：1984-10-05

申请人： BETZ EUROPE, INC.

发明人： Chen, Fu

IPC分类号： C02F5/08 ,  C02F5/10

CPC分类号： C02F5/10 ,  C02F5/105 ,  C02F5/12 ,  C02F5/125 ,  C23F11/08

公开(公告)号：EP0267596A3

公开(公告)日：1989-03-08

申请号：EP87116646.8

申请日：1987-11-11

申请人： THE B.F. GOODRICH COMPANY

发明人： Amjad, Zahid ,  Masler, William Frank, III

IPC分类号： C02F5/10

CPC分类号： C02F5/10 ,  C02F5/105

摘要： Water is treated with copolymers of an acrylic acid and an alkoxyalkyl acrylate which are devoid of acrylamide or methacrylamide. The copolymers are effective as a scale inhibitors in the presence or absence of metal ions, particularly iron, manganese and zinc ions; as stabilizers for the metal ions; and as dispersants for particulate matter, particularly for particulates such as iron oxide, clay, silt, and mixtures thereof.