DE68901690D1 - Verfahren zur bekaempfung von kesselstein in waesserigen systemen mittels polymeren vom typ quaternaeres ammoniummaleinsaeureanhydrid. - Google Patents

Verfahren zur bekaempfung von kesselstein in waesserigen systemen mittels polymeren vom typ quaternaeres ammoniummaleinsaeureanhydrid.

Info

Publication number
DE68901690D1
DE68901690D1 DE8989201697T DE68901690T DE68901690D1 DE 68901690 D1 DE68901690 D1 DE 68901690D1 DE 8989201697 T DE8989201697 T DE 8989201697T DE 68901690 T DE68901690 T DE 68901690T DE 68901690 D1 DE68901690 D1 DE 68901690D1
Authority
DE
Germany
Prior art keywords
ammonium
quaternaural
combating
kettle
aqueous systems
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE8989201697T
Other languages
English (en)
Other versions
DE68901690T2 (de
Inventor
Shih-Ruey Thomas Chen
Craig W Vaughan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Calgon Corp
Original Assignee
Calgon Corp
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
Application filed by Calgon Corp filed Critical Calgon Corp
Publication of DE68901690D1 publication Critical patent/DE68901690D1/de
Application granted granted Critical
Publication of DE68901690T2 publication Critical patent/DE68901690T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Sludge (AREA)
  • Colloid Chemistry (AREA)
  • Paper (AREA)
DE8989201697T 1988-07-05 1989-06-28 Verfahren zur bekaempfung von kesselstein in waesserigen systemen mittels polymeren vom typ quaternaeres ammoniummaleinsaeureanhydrid. Expired - Lifetime DE68901690T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21497988A 1988-07-05 1988-07-05

Publications (2)

Publication Number Publication Date
DE68901690D1 true DE68901690D1 (de) 1992-07-09
DE68901690T2 DE68901690T2 (de) 1992-12-17

Family

ID=22801151

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989201697T Expired - Lifetime DE68901690T2 (de) 1988-07-05 1989-06-28 Verfahren zur bekaempfung von kesselstein in waesserigen systemen mittels polymeren vom typ quaternaeres ammoniummaleinsaeureanhydrid.

Country Status (9)

Country Link
EP (1) EP0350985B1 (de)
JP (1) JPH0259099A (de)
AT (1) ATE76856T1 (de)
AU (1) AU617195B2 (de)
CA (1) CA1333985C (de)
DE (1) DE68901690T2 (de)
ES (1) ES2031684T3 (de)
GR (1) GR3004893T3 (de)
NZ (1) NZ229715A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725096C2 (de) * 1997-06-13 2001-05-10 Saechsisches Textilforsch Inst Verfahren zur Eliminierung von Reaktivfarbstoffen und deren Hydrolysaten aus Abwässern
CN103130343A (zh) * 2011-11-30 2013-06-05 安徽省蓝天化工有限公司 一种海水淡化用阻垢缓蚀分散剂的制备方法
CN114426339A (zh) * 2021-12-30 2022-05-03 中国石油化工股份有限公司 一种油田硫酸钡分散阻垢剂及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB772775A (en) * 1954-06-04 1957-04-17 Monsanto Chemicals A process for treating hard water
GB1287489A (en) * 1969-06-19 1972-08-31 Calgon Corp Water purification
US3715307A (en) * 1971-06-24 1973-02-06 Economics Lab Treatment of water used in heat transfer equipment
DE3700535A1 (de) * 1987-01-10 1988-07-21 Basf Ag Verfahren zur herstellung von wasserloeslichen copoylmerisaten der maleinsaeure und deren verwendung als wasserbehandlungsmittel

Also Published As

Publication number Publication date
AU3783689A (en) 1990-01-11
AU617195B2 (en) 1991-11-21
JPH0259099A (ja) 1990-02-28
EP0350985B1 (de) 1992-06-03
EP0350985A2 (de) 1990-01-17
ATE76856T1 (de) 1992-06-15
CA1333985C (en) 1995-01-17
DE68901690T2 (de) 1992-12-17
NZ229715A (en) 1991-11-26
EP0350985A3 (en) 1990-04-25
GR3004893T3 (de) 1993-04-28
ES2031684T3 (es) 1992-12-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CALGON CORP., PITTSBURGH, PA., US

8339 Ceased/non-payment of the annual fee