BR0010592A - Método e composição para inibir corrosão em sistemas aquosos - Google Patents

Método e composição para inibir corrosão em sistemas aquosos

Info

Publication number
BR0010592A
BR0010592A BR0010592-9A BR0010592A BR0010592A BR 0010592 A BR0010592 A BR 0010592A BR 0010592 A BR0010592 A BR 0010592A BR 0010592 A BR0010592 A BR 0010592A
Authority
BR
Brazil
Prior art keywords
substituted
composition
aqueous systems
aryl
inhibiting corrosion
Prior art date
Application number
BR0010592-9A
Other languages
English (en)
Portuguese (pt)
Inventor
William C Ehrhardt
Longchun Cheng
Dawn Stasney
Kim A Whitaker
Original Assignee
Betzdearborn Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/304,181 external-priority patent/US6379587B1/en
Priority claimed from US09/303,596 external-priority patent/US6585933B1/en
Application filed by Betzdearborn Inc filed Critical Betzdearborn Inc
Publication of BR0010592A publication Critical patent/BR0010592A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/14—Nitrogen-containing compounds
    • C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/08—Corrosion inhibition

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
BR0010592-9A 1999-05-03 2000-05-02 Método e composição para inibir corrosão em sistemas aquosos BR0010592A (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/304,181 US6379587B1 (en) 1999-05-03 1999-05-03 Inhibition of corrosion in aqueous systems
US09/303,596 US6585933B1 (en) 1999-05-03 1999-05-03 Method and composition for inhibiting corrosion in aqueous systems
US30956499A 1999-05-12 1999-05-12
US50572200A 2000-02-17 2000-02-17
PCT/US2000/008750 WO2000066810A1 (fr) 1999-05-03 2000-05-02 Procede et composition pour inhiber la corrosion dans des systemes aqueux

Publications (1)

Publication Number Publication Date
BR0010592A true BR0010592A (pt) 2002-02-05

Family

ID=27501833

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0010592-9A BR0010592A (pt) 1999-05-03 2000-05-02 Método e composição para inibir corrosão em sistemas aquosos

Country Status (15)

Country Link
EP (1) EP1177331A1 (fr)
JP (1) JP2002543294A (fr)
KR (1) KR20020012564A (fr)
CN (1) CN1359430A (fr)
AR (1) AR023836A1 (fr)
AU (1) AU4972700A (fr)
BR (1) BR0010592A (fr)
CA (1) CA2369954A1 (fr)
CZ (1) CZ20013966A3 (fr)
HK (1) HK1044176A1 (fr)
HU (1) HUP0201012A3 (fr)
MX (1) MXPA01011087A (fr)
NO (1) NO20015307D0 (fr)
PL (1) PL352994A1 (fr)
WO (1) WO2000066810A1 (fr)

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2398423C (fr) 2001-09-04 2009-11-10 Rohm And Haas Company Compositions pour inhiber la corrosion
WO2005028707A2 (fr) * 2003-04-21 2005-03-31 The Johns Hopkins University Procedes d'inhibition de corrosion influencee de maniere microbiologique de metaux et d'alliages
US20050003978A1 (en) * 2003-05-28 2005-01-06 Lonza Inc. Quaternary ammonium carbonates and bicarbonates as anticorrosive agents
US7393395B2 (en) 2004-02-05 2008-07-01 Nippon Mining & Metals Co., Ltd. Surface-treating agent for metal
KR100725948B1 (ko) * 2005-11-04 2007-06-11 조우정 부식방지 및 스케일 제거용 화합물 및 그것을 함유한 조성물
CN101424887A (zh) * 2007-11-02 2009-05-06 安集微电子（上海）有限公司 一种半导体晶圆金属基材腐蚀防护液及其使用方法
CN101842747B (zh) * 2007-11-02 2012-07-25 安集微电子（上海）有限公司 一种半导体晶圆金属基材腐蚀防护液及其使用方法
US8771542B2 (en) * 2008-07-11 2014-07-08 Prestone Products Corporation Heat transfer fluid, additive package, system and method
US8759265B2 (en) * 2008-07-15 2014-06-24 Ian D. Smith Thermally stable subsea control hydraulic fluid compositions
CN101844888B (zh) * 2009-03-26 2012-04-11 北京纽维逊建筑工程技术有限公司 用于钢筋混凝土的有机复合钢筋阻锈剂及其制备方法
BR112012029136B1 (pt) * 2010-05-18 2020-11-10 Kurita Water Industries Ltd. processo para melhorar o coeficiente de transferência de calor em instalações de geração de vapor
CN102558433B (zh) * 2010-12-28 2013-10-30 上海洗霸科技股份有限公司 一种阴离子聚丙烯酰胺及其制备方法和应用
US8236205B1 (en) 2011-03-11 2012-08-07 Wincom, Inc. Corrosion inhibitor compositions comprising tetrahydrobenzotriazoles and other triazoles and methods for using same
US8236204B1 (en) 2011-03-11 2012-08-07 Wincom, Inc. Corrosion inhibitor compositions comprising tetrahydrobenzotriazoles solubilized in activating solvents and methods for using same
WO2013019627A1 (fr) * 2011-07-29 2013-02-07 Kemira Oyj Polymères anti-tartre et procédés permettant d'empêcher la formation de tartre
CN104246072B (zh) * 2012-01-20 2017-06-16 凯米罗总公司 用于监控机器中杀菌剂给料的装置和方法
CN102730850B (zh) * 2012-07-11 2014-02-12 成都润兴消毒药业有限公司 一种环保型水处理缓蚀阻垢剂及其制备方法
KR101514715B1 (ko) * 2012-08-24 2015-04-23 유홍숙 스케일 및 녹 세정용 조성물
US9023784B2 (en) * 2012-09-13 2015-05-05 Ecolab Usa Inc. Method of reducing soil redeposition on a hard surface using phosphinosuccinic acid adducts
US8871699B2 (en) 2012-09-13 2014-10-28 Ecolab Usa Inc. Detergent composition comprising phosphinosuccinic acid adducts and methods of use
US9752105B2 (en) 2012-09-13 2017-09-05 Ecolab Usa Inc. Two step method of cleaning, sanitizing, and rinsing a surface
US9994799B2 (en) 2012-09-13 2018-06-12 Ecolab Usa Inc. Hard surface cleaning compositions comprising phosphinosuccinic acid adducts and methods of use
CA2952867C (fr) 2013-06-18 2022-05-03 Chemgreen Innovation Inc. Polymere antimicrobien dans lequel un groupe aromatique est integre de maniere covalente dans la chaine principale du polymere par la perte d'aromaticite
CN103409122B (zh) * 2013-08-28 2015-09-23 中国石油集团川庆钻探工程有限公司 一种水溶性抗硫化氢用缓蚀剂
US9309205B2 (en) 2013-10-28 2016-04-12 Wincom, Inc. Filtration process for purifying liquid azole heteroaromatic compound-containing mixtures
US9771336B2 (en) 2013-12-02 2017-09-26 Ecolab Usa Inc. Tetrazole based corrosion inhibitors
CN103789774A (zh) * 2014-01-21 2014-05-14 山东省泰和水处理有限公司 一种咪唑啉衍生物缓蚀剂的制备方法
CN103820785B (zh) * 2014-01-28 2016-04-06 西安理工大学 用于碳钢的四元复配气相缓蚀剂及其制备方法
CN103924247B (zh) * 2014-04-12 2016-06-08 冯智勇 一种高效的燃煤锅炉缓蚀剂
CN103938213B (zh) * 2014-04-24 2017-09-05 姬光河 一种防锈液
US9752237B2 (en) 2014-05-29 2017-09-05 Ecolab Usa Inc. Control of sugar evaporator scale using sugar or sugar moieties
CN104355418A (zh) * 2014-10-24 2015-02-18 中国海洋石油总公司 一种无磷缓蚀阻垢剂的制备方法
US20160145442A1 (en) * 2014-11-20 2016-05-26 Chemtreat, Inc. Methods of pre-treating equipment used in water systems
WO2016191672A1 (fr) 2015-05-28 2016-12-01 Ecolab Usa Inc. Inhibiteurs de corrosion à base d'imidazole et de benzimidazole disubstitués
JP6959145B2 (ja) * 2015-05-28 2021-11-02 エコラボ ユーエスエー インコーポレイティド プリン系腐食抑制剤及びこれを使用する方法
US9404069B1 (en) 2015-06-12 2016-08-02 Crossford International, Llc Systems and methods for cooling tower fill cleaning with a chemical gel
US10030216B2 (en) 2015-06-12 2018-07-24 Crossford International, Llc Systems and methods for cooling tower fill cleaning with a chemical gel
CN106319528A (zh) * 2015-06-26 2017-01-11 埃科莱布美国股份有限公司 一种缓蚀剂组合物及其用途
CN105016490A (zh) * 2015-07-06 2015-11-04 安徽省蓝天能源环保科技有限公司 一种电力循环水系统用阻垢缓蚀剂
CN105039995B (zh) * 2015-07-09 2017-08-29 潍坊友容实业有限公司 一种盐碱地排盐暗管专用阻垢缓蚀剂及其制备方法
CN105603436B (zh) * 2015-12-18 2017-11-17 中国科学院长春应用化学研究所 一种复合缓蚀剂及其制备方法
CN105780011B (zh) * 2016-03-08 2018-11-13 克拉玛依中科恒信科技有限责任公司 一种含咪唑并[1,2-a]吡啶类化合物的缓蚀剂及其制备方法
CN106115945A (zh) * 2016-07-30 2016-11-16 山东胜伟园林科技有限公司 一种缓蚀性能好的阻垢剂在排盐暗管中的应用
CA3035448C (fr) 2016-09-07 2023-05-09 Ecolab Usa Inc. Compositions detergentes solides et procedes de reglage de la vitesse de distribution de detergents solides utilisant des tensioactifs anioniques
JP2020503429A (ja) * 2016-10-04 2020-01-30 コモンウェルス サイエンティフィック アンド インダストリアル リサーチ オーガナイゼーション 腐食を抑制するための方法
CN108079981B (zh) * 2016-11-21 2021-06-08 中国科学院大连化学物理研究所 一种四氮唑/疏水基键合固定相及其制备方法
US11149202B1 (en) 2016-12-13 2021-10-19 Ecolab Usa Inc. Tetracarboxylic acid combinations for corrosion inhibition
EP3589777A4 (fr) 2017-02-28 2021-02-17 Ecolab USA Inc. Compositions de nettoyage alcalines comprenant un acide alkylaminohydroxy et/ou une amine secondaire et procédés de réduction de la corrosion métallique
WO2018160490A1 (fr) 2017-02-28 2018-09-07 Ecolab Usa Inc. Composition de nettoyage alcaline comprenant un acide hydroxyphosphono-carboxylique et procédés de réduction de la corrosion métallique
CN107254683B (zh) * 2017-07-03 2019-08-27 无锡市恒利弘实业有限公司 一种钢制件的强力除锈剂及其使用方法
TW201927706A (zh) * 2017-12-13 2019-07-16 美商藝康美國公司 經氫磷酸化之多羧酸及其協同組合作為腐蝕及積垢抑制劑
CN111183246B (zh) * 2018-02-16 2021-01-01 株式会社日本触媒 金属腐蚀抑制剂
CN108623878B (zh) * 2018-04-20 2019-09-13 高松 一种水利工程浮漂用母粒的制备方法
CN109504973A (zh) * 2019-01-09 2019-03-22 奎克化学（中国）有限公司 一种用于轧钢领域的酸洗缓蚀剂的表面活性剂
CA3136427C (fr) * 2019-04-16 2023-10-24 Ecolab Usa Inc. Utilisation de composes cationiques a charges multiples derives de polyamines et leurs compositions pour lutter contre la corrosion dans un reseau d'alimentation en eau
PH12021553091A1 (en) * 2019-06-11 2023-08-14 Ecolab Usa Inc Corrosion inhibitor formulation for geothermal reinjection well
CN112682031B (zh) * 2019-10-18 2024-06-28 中国石油化工股份有限公司 一种油田井间示踪剂、示踪方法及压裂液
CN110670074B (zh) * 2019-11-05 2021-11-16 北美防锈技术（上海）有限公司 一种环保型螺纹钢表面防锈处理剂及其制备方法
CN115667585A (zh) 2020-05-28 2023-01-31 埃科莱布美国股份有限公司 采用聚马来酸盐和非硼酸盐缓冲液的闭环冷却水腐蚀抑制
JP7544523B2 (ja) * 2020-07-29 2024-09-03 東ソー・ファインケム株式会社 自然重合が抑制されたスチレンスルホン酸リチウムの極性有機溶剤溶液及び自然重合を抑制する方法
EP4225974A1 (fr) * 2020-10-08 2023-08-16 Ecolab USA, Inc. Programme de traitement anti-corrosion
CN113667982A (zh) * 2021-07-27 2021-11-19 新疆金海德邦能源科技有限公司 一种预防碳钢应力腐蚀开裂的缓蚀剂及其制备方法
CN115959781A (zh) * 2021-10-12 2023-04-14 中国石油化工股份有限公司 无磷预膜剂及其应用和循环水处理方法
WO2024196346A1 (fr) * 2023-03-17 2024-09-26 Baker Hughes Oilfield Operations Llc Mélanges synergiques d'inhibiteurs de corrosion
US12139662B2 (en) 2022-03-17 2024-11-12 Baker Hughes Oilfield Operations Llc Synergistic corrosion inhibitor blends
CN114806529B (zh) * 2022-05-31 2023-07-28 中国石油化工股份有限公司 一种溶垢助溶剂及其制备方法
CN115094406B (zh) * 2022-06-20 2023-10-20 邢台旭阳科技有限公司 无磷预膜剂及其制备方法和应用
KR102627360B1 (ko) * 2023-10-20 2024-01-19 엔티스테크주식회사 부식억제 효과가 우수한 금속용 방식제 조성물
CN117447662B (zh) * 2023-12-22 2024-02-27 广东粤首新科技有限公司 一种水溶性聚合物阻垢剂的制备工艺
CN118791144B (zh) * 2024-07-22 2026-02-10 河北择赛生物科技有限公司 一种高硬度高碱度循环冷却水用缓蚀阻垢剂及其制备方法
CN119912926B (zh) * 2025-04-01 2026-02-27 新疆科力新技术发展股份有限公司 水基环空保护液及其制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867259A (en) * 1973-11-08 1975-02-18 American Cyanamid Co Lactate dehydrogenase test material
US5635484A (en) * 1982-09-17 1997-06-03 The State Of Oregon Acting By And Through The Oregon State Board Of Higher Education On Behalf Of Oregon State University Propionibacteria peptide microcin
US4683035A (en) * 1986-02-03 1987-07-28 Nalco Chemical Company Method for in situ corrosion detection using electrochemically active compounds
ZA918719B (en) * 1990-11-07 1992-08-26 Cortech Inc Ester inhibitors
DE4218585A1 (de) * 1992-03-02 1993-09-09 Henkel Kgaa 1,2,4-triazoliumsalze oder 1,2,3,4-tetrazoliumsalze, verfahren zu deren herstellung und deren verwendung
US5993852A (en) * 1997-08-29 1999-11-30 Pharmaderm Laboratories Ltd. Biphasic lipid vesicle composition for transdermal administration of an immunogen
US6187262B1 (en) * 1998-08-19 2001-02-13 Betzdearborn Inc. Inhibition of corrosion in aqueous systems

Also Published As

Publication number Publication date
CZ20013966A3 (cs) 2002-05-15
AU4972700A (en) 2000-11-17
WO2000066810A1 (fr) 2000-11-09
HUP0201012A3 (en) 2003-08-28
CN1359430A (zh) 2002-07-17
MXPA01011087A (es) 2002-06-04
JP2002543294A (ja) 2002-12-17
HUP0201012A2 (hu) 2002-07-29
AR023836A1 (es) 2002-09-04
KR20020012564A (ko) 2002-02-16
NO20015307L (no) 2001-01-02
NO20015307D0 (no) 2001-10-30
EP1177331A1 (fr) 2002-02-06
HK1044176A1 (zh) 2002-10-11
PL352994A1 (en) 2003-09-22
CA2369954A1 (fr) 2000-11-09

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A, 6A, E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1929 DE 26/12/2007.