公开(公告)号：MX9603503A

公开(公告)日：1998-05-31

申请号：MX9603503

申请日：1996-08-19

Applicant: KURITA WATER IND LTD

Inventor： SUZUKI TAKASHI ,  MORINAGA HIDEO ,  ISHIKAWA KATSUHIRO ,  HIRANO AKIHIDE

IPC: C02F5/10 ,  C02F5/12 ,  C02F05/10

Abstract: La presente invencion describe un agente novedoso para el tratamiento de agua y un método para tratar el agua con el mismo.

公开(公告)号：MX9707029A

公开(公告)日：1997-11-29

申请号：MX9707029

申请日：1996-03-15

Applicant: BUCKMAN LABOR INC

Inventor： HOEKSTRA P M ,  YATES C W

IPC: C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/14 ,  C02F05/02 ,  C02F05/08 ,  C02F05/10 ,  C02F05/14

Abstract: Una composicion que contiene un polímero orgánico anionico, y un ácido organofosfonico, en donde estos tres componentes de la composicion están presentes en una cantidad combinada sinergísticamente efectiva para controlar la formacion de incrustaciones inorgánicas en un sistema acuoso. También se proporciona un método para controlar la formacion de incrustaciones inorgánicas en superficies en un sistema acuoso. El sistema acuoso esta en contacto con una composicion que comprende un polímero orgánico anionico, un polifosfato y un ácido organofosfonico. Estos tres componentes están presentes en una cantidad efectiva combinada para controlar la formacion de incrustaciones inorgánicas en el sistema acuoso.

公开(公告)号：EP0058073A3

公开(公告)日：1982-09-08

申请号：EP82300606

申请日：1982-02-08

Applicant: PFIZER INC.

Inventor： Walinsky, Stanley Walter

IPC: C08F222/06 ,  C08F220/06 ,  C02F05/10

CPC classification number: C02F5/10 ,  C08F220/04 ,  C08F220/06 ,  C08F222/04 ,  C08F222/06

Abstract: Substantially homogeneous acrylate/maleate copolymers of number average molecular weight of 500 to 5000 are prepared by copolymerizing 35 to 65 mole percent acrylic or methacrylic acid (or a mixture thereof) with 65 to 35 mole percent maleic anhydride at over a period of from 0.3 to 10 hours at 80 to 150°C in the presence of specified quantities of a polymerization initiator and a chain-transfer solvent, the solvent and mode of addition of the monomers to the solvent being such that both the monomers and the formed co-polymer remain in solution and the mole ratio of the acrylic or methacrylic acid monomer to the maleic anhydride monomer in the solvent is maintained at from 0.005 to 0.2 throughout the polymerization. Also included are substantially homogeneous copolymers consisting essentially of from 35 to 65 mole percent acrylic or methacrylic acid units (or a mixture thereof) and from 65 to 35 mole percent maleic anhydride units and having a number average molecular weight of from 500 to 5000. The copolymers in hydrolyzed form are particularly useful in the prevention of alkaline calcium and magnesium scale formation, such as during sea-water evaporative desalination.

公开(公告)号：EP0184414A3

公开(公告)日：1988-06-08

申请号：EP85308751

申请日：1985-12-02

Applicant: CALGON CORPORATION

Inventor： Yorke, Monica A.

IPC: C02F05/10 ,  C02F05/12 ,  C02F05/14

CPC classification number: C02F5/12 ,  C02F5/14

Abstract: The precipitation and deposition of alkaline-earth metal scales in an aqueous system is inhibited by comprising adding to the system an anionic polyelectrolyte and an anionic surfactant, the weight ratio of polyelectrolyte to surfactant being in the range from 1000:1 to 1:10. Compositions containing the electrolyte and surfactant in that ratio are novel.

公开(公告)号：WO1996035645A1

公开(公告)日：1996-11-14

申请号：PCT/US1996006518

申请日：1996-05-08

Applicant: CHEM PRO LABORATORY, INC.

Inventor： CHEM PRO LABORATORY, INC. ,  SYDER, Milton, W. ,  BORTNIK, Michael

IPC: C02F05/10

CPC classification number: C11D7/36 ,  C02F5/10 ,  C02F5/14 ,  C11D7/265 ,  C23G1/088 ,  C23G1/103

Abstract: A method is described for removing corrosion products formed in situ, transported corrosion products, iron staining from water, which resides on fixtures, and unwanted materials trapped within and/or in association with corrosion products from iron, steels, and copper, alloys of these metals and from other surfaces, specifically including glasses, plastics, elastomers, ceramics, tiles and porcelains. The method comprises contacting corroded sufaces and/or surfaces supporting corrosion products with an aqueous composition containing citric acid or its salts, at least one organophosphonate or its salts, and at least one water-soluble polymer or its salts. A corrosion inhibitor may be included in the composition. One or more alkali metal or alkaline earth metal or ammonium hydroxides may be included for adjusting the pH, and/or for controlling the kinetics of the removal method. Enhancements such as abrasives, coloring agents and odorizers may also be included.

Abstract translation: 描述了一种用于去除在原位形成的腐蚀产物，运输的腐蚀产物，水中的铁污染，驻留在固定装置上的方法，以及被困在铁，钢和铜的腐蚀产物中和/或与铁，钢和铜的合金相关的不期望的材料，这些合金 金属和其他表面，特别包括眼镜，塑料，弹性体，陶瓷，瓷砖和瓷器。 该方法包括使含有柠檬酸或其盐的水性组合物，至少一种有机膦酸盐或其盐和至少一种水溶性聚合物或其盐与含有腐蚀产物的腐蚀表面和/或表面接触。 组合物中可以包含腐蚀抑制剂。 可以包括一种或多种碱金属或碱土金属或氢氧化铵来调节pH，和/或用于控制除去方法的动力学。 还可以包括增强剂，例如研磨剂，着色剂和增味剂。

公开(公告)号：WO1991005742A1

公开(公告)日：1991-05-02

申请号：PCT/US1989004655

申请日：1989-10-17

Applicant: EDEN TECHNOLOGIES, INC. ,  HIEATT, Allen, C.

Inventor： EDEN TECHNOLOGIES, INC.

IPC: C02F05/10

CPC classification number: C02F5/12

Abstract: The present invention is directed to compositions and methods for removing water scale from surfaces and preventing redeposition. The composition comprises a hydroxycarboxylic acid, an alkanolamine and an alkali metal monocyclic aryl sulfonate. Heat-exchange systems utilizing water as heat-exchange medium are operated by incorporating a minor amount of this composition in the circulating water.

Abstract translation: 本发明涉及从表面除去水垢并防止再沉积的组合物和方法。 该组合物包含羟基羧酸，链烷醇胺和碱金属单环芳基磺酸盐。 使用水作为热交换介质的热交换系统通过将少量的该组合物并入循环水来进行操作。

公开(公告)号：EP0172154A3

公开(公告)日：1986-07-30

申请号：EP85870097

申请日：1985-07-12

Applicant: Monsanto Company

Inventor： Coleman, James Patrick ,  Kvakovszky, George ,  Sikora, David John

IPC: C02F05/10 ,  C02F05/12

CPC classification number: C02F5/12 ,  C02F5/10

Abstract: Maleate polymers and derivatives of maleate polymers containing specified functional groups are effective scale inhibitors, particularly for calcium phosphate scale.

公开(公告)号：EP0079165A3

公开(公告)日：1983-08-31

申请号：EP82305671

申请日：1982-10-26

Applicant: PFIZER INC.

Inventor： Walinsky, Stanley Walter

IPC: C02F05/10 ,  C08F220/06 ,  C08F222/02

CPC classification number: C02F5/10 ,  C08F220/06 ,  C08F222/02 ,  Y10S525/902

Abstract: Substantially homogeneous (methlacrylic acid/itaconic acid copolymers of number average molecular weight of 500 to 7000 are prepared by copolymerizing in aqueous solution 5 to 90 mole percent acrylic or methacrylic acid monomer with 95 to 10 mole percent itaconic acid monomer at 80 to 120°C in the presence of a polymerization initiator, the acrylic or methacrylic acid monomer and at least half of the initiator being added separately and continuously to the itaconic acid monomer throughout the polymerization period. The copolymers are employed at a level of from about 0.1 to 100 ppm for prevention of alkaline calcium and magnesium scale formation, such as during seawater evaporative desalination.

公开(公告)号：EP0032416A3

公开(公告)日：1981-09-30

申请号：EP81300010

申请日：1981-01-02

Applicant: CENTRAL ELECTRICITY GENERATING BOARD

Inventor： Wood, Christopher John ,  Bradbury, David ,  Swan, Timothy ,  Segal, Michael Giles ,  Sellars, Robin Michael

IPC: C02F05/08 ,  C02F05/10 ,  C02F05/12 ,  G21F09/30 ,  G21F09/12

CPC classification number: C23G1/24 ,  C02F5/10 ,  G21F9/004

Abstract: A process for the removal of deposits consisting essentially of the oxides of one or more transition metals from a surface, which process comprises contacting the said surface at pH below 7.0 with a reagent comprising a one-electron reducing agent which is a low oxidation state transition metal ion in combination with a complexing agent which is thermally stable at a operating pH. The process is particularly suitable for decontaminating the cooling system or a component associated with the cooling system of a water-cooled nuclear reactor, or other contaminated plant items.

公开(公告)号：WO1997019897A1

公开(公告)日：1997-06-05

申请号：PCT/DE1996001213

申请日：1996-07-07

Applicant: WESSOLLEK, Heimo

IPC: C02F05/10

CPC classification number: C02F5/10

Abstract: The invention concerns a cleaner for drinking water systems containing deposits such as limescale, grease, iron or manganese-containing ochre incrustations, the cleaner comprising citric acid and foodstuffs preservatives. The cleaner is characterized in that, in a pack in solid form, it comprises a combination of between 90 and 99 wt.%, preferably between 95 and 98 wt.%, citric acid, between 0.3 and 10 wt.%, preferably between 0.3 and 1 wt.%, of at least one foodstuffs preservative and between 1 and 4 wt.% of at least one surfactant, and optionally an antifoaming agent in a pack. The total of all the percentages is 100. The invention further concerns a method of cleaning drinking water systems and the use thereof.

Abstract translation: 本发明涉及一种清洁器用于饮用水厂，沉积物如石灰，油脂，铁或ocherings有，含有柠檬酸，以及食品防腐剂含锰，其特征在于，清洁器在一个封装中的固体形式按重量计的90至99重量份的组合 ％，优选95〜98重量％的柠檬酸和0.3〜10重量％，优选为0.3〜1重量％的至少一种食品防腐剂和至少一种表面活性剂（重量％）为1〜4的量 - 和任选地包含消泡剂％在封装中，其中所有百分比之和始终为100，用于净化饮用水系统的方法和其用途。