IT8249421A0 - Procedimento e composizione a basedi polimeri di carbossilato per la eliminazione delle incrostazioni in caldaie e simili - Google Patents

Procedimento e composizione a basedi polimeri di carbossilato per la eliminazione delle incrostazioni in caldaie e simili

Info

Publication number
IT8249421A0
IT8249421A0 IT8249421A IT4942182A IT8249421A0 IT 8249421 A0 IT8249421 A0 IT 8249421A0 IT 8249421 A IT8249421 A IT 8249421A IT 4942182 A IT4942182 A IT 4942182A IT 8249421 A0 IT8249421 A0 IT 8249421A0
Authority
IT
Italy
Prior art keywords
boilers
scaling
elimination
procedure
similar
Prior art date
Application number
IT8249421A
Other languages
English (en)
Other versions
IT1149113B (it
Inventor
Walter F Lorenc
John A Kelly
Frederic S Mandel
Original Assignee
Nalco Chemical Co
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 US06382567 external-priority patent/US4457847B2/en
Application filed by Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of IT8249421A0 publication Critical patent/IT8249421A0/it
Application granted granted Critical
Publication of IT1149113B publication Critical patent/IT1149113B/it

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Cookers (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paper (AREA)
  • Removal Of Specific Substances (AREA)
IT49421/82A 1981-11-05 1982-11-04 Procedimento e composizione a base di polimeri di carbossilato per la eliminazione delle incrostazioni in caldaie e simili IT1149113B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31866581A 1981-11-05 1981-11-05
US06382567 US4457847B2 (en) 1981-11-05 1982-05-28 Carboxylate polymers for internal scale control agents in boiler systems

Publications (2)

Publication Number Publication Date
IT8249421A0 true IT8249421A0 (it) 1982-11-04
IT1149113B IT1149113B (it) 1986-12-03

Family

ID=26981609

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49421/82A IT1149113B (it) 1981-11-05 1982-11-04 Procedimento e composizione a base di polimeri di carbossilato per la eliminazione delle incrostazioni in caldaie e simili

Country Status (10)

Country Link
AT (1) AT386594B (it)
AU (1) AU555892B2 (it)
CA (1) CA1198027A (it)
DE (1) DE3240780A1 (it)
ES (1) ES8500192A1 (it)
FR (1) FR2515631B1 (it)
GB (1) GB2110659B (it)
IT (1) IT1149113B (it)
MX (1) MX160592A (it)
SE (1) SE450954B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936987A (en) * 1983-03-07 1990-06-26 Calgon Corporation Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers
EP0122013B1 (en) * 1983-03-07 1988-12-21 Calgon Corporation Polymeric additives for water
US4640793A (en) * 1984-02-14 1987-02-03 Calgon Corporation Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers
GB8506615D0 (en) * 1985-03-14 1985-04-17 British Petroleum Co Plc Scale inhibitors
US4717543A (en) * 1986-08-04 1988-01-05 Calgon Corporation Method of inhibiting the corrosion of copper and copper alloys
US4719082A (en) * 1986-08-15 1988-01-12 Nalco Chemical Company Vinyl sulfonic acid - methacrylic acid copolymer passivators for high pressure boilers
US4898677A (en) * 1986-11-10 1990-02-06 National Starch And Chemical Corporation Process for inhibiting scale formation and modifying the crystal structure of barium sulfate and other inorganic salts
US5135661A (en) * 1989-03-21 1992-08-04 Suresh Patel Process for treating water or aqueous systems
US4937002A (en) * 1989-06-12 1990-06-26 National Starch And Chemical Investment Holding Corporation Interpolymers for barium sulphate inhibition
GB2236314A (en) * 1989-09-06 1991-04-03 Grace W R & Co Inhibition of deposition in aqueous systems.
WO1995013247A1 (en) * 1993-11-11 1995-05-18 Marathon Oil Company Inhibition of scale growth utilizing a dual polymer composition
CN114262072A (zh) * 2019-01-31 2022-04-01 陈建华 一种煤气化黑灰水自适应降硬型灰水阻垢分散剂和应用

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2327302A (en) * 1940-07-13 1943-08-17 Du Pont Soap composition
GB724683A (en) * 1952-05-16 1955-02-23 Goodrich Co B F Improvements in or relating to a boiler water treating composition
GB772775A (en) * 1954-06-04 1957-04-17 Monsanto Chemicals A process for treating hard water
US2980610A (en) * 1956-07-13 1961-04-18 Monsanto Chemicals Process for treating water
US3117577A (en) * 1960-02-04 1964-01-14 Jeanette Elaine J Mosier Sanitary napkin and holder
US3285886A (en) * 1961-07-17 1966-11-15 Grace W R & Co Threshold treatment of water with water dispersible complexing polymers
US3879288A (en) * 1970-07-01 1975-04-22 Frederick Herman Siegele Process of inhibiting scale formation on walls of structures containing an aqueous system
GB1440403A (en) * 1973-01-08 1976-06-23 Grace W R & Co Process of inhibiting formation of scale in distrillation of saline water
GB1414918A (en) * 1973-02-14 1975-11-19 Ciba Geigy Uk Ltd Treatment of water to prevent the deposition of scale
US3904685A (en) * 1973-07-20 1975-09-09 Celanese Corp Polyacrylic acid having high chelation value and its production
DE2643422A1 (de) * 1976-09-21 1978-03-30 Kurita Water Ind Ltd Wasserbehandlungsmittel und verfahren zur behandlung von wasser
US4072607A (en) * 1976-10-26 1978-02-07 American Cyanamid Company Preparation of anionic polymers for use as scale inhibitors and anti-precipitants
US4048066A (en) * 1976-11-17 1977-09-13 Chemed Corporation Method of inhibiting scale
DE2802709A1 (de) * 1978-01-23 1979-07-26 American Cyanamid Co Verfahren zur bekaempfung der ablagerung von haftendem kesselstein und mittel zu seiner durchfuehrung
GB2054548B (en) * 1979-06-19 1982-12-22 Sanyo Chemical Ind Ltd Scale removal
DE3230291A1 (de) * 1981-08-18 1983-03-03 Dearborn Chemicals Ltd., Widnes, Cheshire Zusammensetzung zur verhinderung von kesselstein in waessrigen systemen

Also Published As

Publication number Publication date
ES517116A0 (es) 1984-10-01
DE3240780C2 (it) 1989-08-31
MX160592A (es) 1990-03-27
IT1149113B (it) 1986-12-03
AT386594B (de) 1988-09-12
AU555892B2 (en) 1986-10-16
FR2515631B1 (fr) 1989-12-08
FR2515631A1 (fr) 1983-05-06
GB2110659A (en) 1983-06-22
SE8206274L (sv) 1983-05-06
ES8500192A1 (es) 1984-10-01
ATA405082A (de) 1988-02-15
AU8963682A (en) 1983-05-12
SE8206274D0 (sv) 1982-11-04
SE450954B (sv) 1987-08-17
DE3240780A1 (de) 1983-05-11
GB2110659B (en) 1985-09-04
CA1198027A (en) 1985-12-17

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961127