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BR8803057A - Processo para inibir a deposicao de crosta de sulfato de bario - Google Patents

Processo para inibir a deposicao de crosta de sulfato de bario

Info

Publication number
BR8803057A
BR8803057A BR8803057A BR8803057A BR8803057A BR 8803057 A BR8803057 A BR 8803057A BR 8803057 A BR8803057 A BR 8803057A BR 8803057 A BR8803057 A BR 8803057A BR 8803057 A BR8803057 A BR 8803057A
Authority
BR
Brazil
Prior art keywords
bario
inhibit
sulfate
crust deposition
crust
Prior art date
Application number
BR8803057A
Other languages
English (en)
Inventor
Barry Cook
Original Assignee
Ciba Geigy Ag
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 GB878714627A external-priority patent/GB8714627D0/en
Priority claimed from GB878717516A external-priority patent/GB8717516D0/en
Application filed by Ciba Geigy Ag filed Critical Ciba Geigy Ag
Publication of BR8803057A publication Critical patent/BR8803057A/pt

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
    • 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
    • C02F5/14—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 phosphorus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
BR8803057A 1987-06-23 1988-06-22 Processo para inibir a deposicao de crosta de sulfato de bario BR8803057A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878714627A GB8714627D0 (en) 1987-06-23 1987-06-23 Scale inhibition
GB878717516A GB8717516D0 (en) 1987-07-23 1987-07-23 Scale inhibition

Publications (1)

Publication Number Publication Date
BR8803057A true BR8803057A (pt) 1989-01-10

Family

ID=26292388

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8803057A BR8803057A (pt) 1987-06-23 1988-06-22 Processo para inibir a deposicao de crosta de sulfato de bario

Country Status (5)

Country Link
EP (1) EP0297049B1 (pt)
JP (1) JP2652041B2 (pt)
BR (1) BR8803057A (pt)
DE (1) DE3861556D1 (pt)
MX (1) MX173616B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937002A (en) * 1989-06-12 1990-06-26 National Starch And Chemical Investment Holding Corporation Interpolymers for barium sulphate inhibition
US5164468A (en) * 1990-09-05 1992-11-17 The Standard Oil Company Polymers derived from α, β-unsaturated polycarboxylic acids or anhydrides and n-substituted acrylamides, and use in reducing scale
US5755972A (en) * 1996-03-01 1998-05-26 Rohm And Haas Company Method for metal sulfate scale control in harsh oilfield conditions
GB201110728D0 (en) * 2011-06-23 2011-08-10 Uni I Stavanger Scale inhibition

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2054548B (en) * 1979-06-19 1982-12-22 Sanyo Chemical Ind Ltd Scale removal
JPS571316A (en) * 1980-06-02 1982-01-06 Matsushita Electric Industrial Co Ltd Coffee brewer with mill
FR2483932B1 (fr) * 1980-06-09 1985-08-02 Rhone Poulenc Spec Chim Nouvelles compositions polymere acrylique, procede pour leur obtention, et application notamment comme agents antitartres
JPS5944119A (ja) * 1982-09-06 1984-03-12 Pioneer Electronic Corp 電子チユ−ナ−
JPS59105892A (ja) * 1982-12-10 1984-06-19 Kurita Water Ind Ltd 水処理剤
IN161206B (pt) * 1983-06-28 1987-10-17 Goodrich Co B F
DE3580541D1 (de) * 1984-07-13 1990-12-20 Monsanto Co Verhuetung von kesselsteinbildung mittels eines maleatpolymers.
NZ213578A (en) * 1984-11-09 1988-04-29 Calgon Corp Inhibiting corrosion and scale deposition in aqueous systems by adding water soluble polymers
US4589985A (en) * 1984-12-03 1986-05-20 Calgon Corporation Polyelectrolyte and surfactant compositions for controlling alkaline earth metal scales
US4560481A (en) * 1984-12-13 1985-12-24 Betz Laboratories, Inc. Method of controlling iron induced fouling in water systems
US4710303A (en) * 1986-08-14 1987-12-01 Nalco Chemical Company Low molecular weight polyvinyl sulfonate for low pH barium sulfate scale control

Also Published As

Publication number Publication date
DE3861556D1 (de) 1991-02-21
EP0297049B1 (en) 1991-01-16
JPS6418499A (en) 1989-01-23
EP0297049A1 (en) 1988-12-28
JP2652041B2 (ja) 1997-09-10
MX173616B (es) 1994-03-18

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Legal Events

Date Code Title Description
KD Fees due (letter patent)
FG Letter patent granted
PC Transfer

Free format text: FMC CORPORATION (UK) LIMITED (GB)

B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 22/06/2003