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
Links
Classifications
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- 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
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- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2338987X | 1939-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL55478C true NL55478C (nl) |
Family
ID=7995035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL55478D NL55478C (nl) | 1939-02-21 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2338987A (nl) |
| NL (1) | NL55478C (nl) |
Families Citing this family (14)
| 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 |
| US4642194A (en) * | 1985-09-16 | 1987-02-10 | Nalco Chemical Company | Method for prevention of phosphonate decomposition by chlorine |
| US4711724A (en) * | 1985-09-16 | 1987-12-08 | Nalco Chemical Company | Method for prevention of phosphonate decomposition by chlorine |
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0
- NL NL55478D patent/NL55478C/xx active
-
1939
- 1939-11-27 US US306413A patent/US2338987A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2338987A (en) | 1944-01-11 |