NL55478C - - Google Patents

Info

Publication number
NL55478C
NL55478C NL55478DA NL55478C NL 55478 C NL55478 C NL 55478C NL 55478D A NL55478D A NL 55478DA NL 55478 C NL55478 C NL 55478C
Authority
NL
Netherlands
Application number
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.)
Publication of NL55478C publication Critical patent/NL55478C/xx

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
    • C02F5/14—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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/087—Compounds containing nitrogen and non-metals and optionally metals containing one or more hydrogen atoms
    • C01B21/092—Compounds containing nitrogen and non-metals and optionally metals containing one or more hydrogen atoms containing also one or more metal atoms
    • C01B21/0923—Metal imides or amides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (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)
NL55478D 1939-02-21 NL55478C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2338987X 1939-02-21

Publications (1)

Publication Number Publication Date
NL55478C true NL55478C (fr)

Family

ID=7995035

Family Applications (1)

Application Number Title Priority Date Filing Date
NL55478D NL55478C (fr) 1939-02-21

Country Status (2)

Country Link
US (1) US2338987A (fr)
NL (1) NL55478C (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907716A (en) * 1959-10-06 Silver cleaner
US2567285A (en) * 1945-06-05 1951-09-11 Philadelphia Quartz Co Sterilization and clarification of raw waters
US2468188A (en) * 1945-06-07 1949-04-26 Great Lakes Carbon Corp Clarification of water supplies
US2469338A (en) * 1946-12-24 1949-05-03 American Cyanamid Co Preparation of guanidine phosphates
US2524049A (en) * 1947-03-25 1950-10-03 Paul W Garbo Production of biuret
US2544706A (en) * 1948-08-12 1951-03-13 Monsanto Chemicals Phosphorus-and nitrogencontaining compounds
US2860106A (en) * 1952-10-01 1958-11-11 Drew & Co Inc E F Urea-phosphoric acid cleaning composition
US3108999A (en) * 1961-05-08 1963-10-29 Monsanto Chemicals Guanidine or melamine process
US3265695A (en) * 1963-06-12 1966-08-09 Grace W R & Co Melamine catalyst and process
BE764270A (fr) * 1970-03-20 1971-08-02 Benckiser Gmbh Joh A Acide niril-tris-(methylenephosphonique) et son procede de preparation
US4014806A (en) * 1973-12-07 1977-03-29 David Connor Novel organopolyphosphates in aqueous cleaning compositions
US4489203A (en) * 1982-09-27 1984-12-18 The Dow Chemical Company Polyumeric alkylene phosphoric acid piperazine derivatives as scale inhibitors
US4711724A (en) * 1985-09-16 1987-12-08 Nalco Chemical Company Method for prevention of phosphonate decomposition by chlorine
US4642194A (en) * 1985-09-16 1987-02-10 Nalco Chemical Company Method for prevention of phosphonate decomposition by chlorine

Also Published As

Publication number Publication date
US2338987A (en) 1944-01-11

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