FR2114584A5 - - Google Patents

Info

Publication number
FR2114584A5
FR2114584A5 FR7140486A FR7140486A FR2114584A5 FR 2114584 A5 FR2114584 A5 FR 2114584A5 FR 7140486 A FR7140486 A FR 7140486A FR 7140486 A FR7140486 A FR 7140486A FR 2114584 A5 FR2114584 A5 FR 2114584A5
Authority
FR
France
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
Application number
FR7140486A
Other languages
French (fr)
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.)
Fisons Ltd
Original Assignee
Fisons Ltd
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 Fisons Ltd filed Critical Fisons Ltd
Priority to BE785556A priority Critical patent/BE785556Q/en
Application granted granted Critical
Publication of FR2114584A5 publication Critical patent/FR2114584A5/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/226—Hemihydrate process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR7140486A 1970-11-12 1971-11-12 Expired FR2114584A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE785556A BE785556Q (en) 1971-11-12 1972-06-28 Reducing calcium sulphate hemihydrate ppn - by washing with surfactant

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB5386970A GB1356586A (en) 1970-11-12 1970-11-12 Inhibition of calcium sulphate scale formation
GB222571 1971-01-16
GB469071 1971-02-15
GB4456071 1971-09-24

Publications (1)

Publication Number Publication Date
FR2114584A5 true FR2114584A5 (en) 1972-06-30

Family

ID=27447220

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7140486A Expired FR2114584A5 (en) 1970-11-12 1971-11-12

Country Status (6)

Country Link
JP (1) JPS5510543B1 (en)
DE (1) DE2155617B2 (en)
FR (1) FR2114584A5 (en)
GB (1) GB1356586A (en)
NL (1) NL169576C (en)
SE (1) SE371424B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049774A (en) 1970-11-12 1977-09-20 Fisons Limited Process for reducing formation of gypsum scale durng the washing of calcium sulphate hemihydrate crystals
US4221769A (en) * 1972-11-08 1980-09-09 Fisons Limited Process for preventing the formation of calcium sulphate scale
FR2372118A1 (en) * 1976-11-30 1978-06-23 Prod Chimique Montagne Noire NEW METHODS OF MANUFACTURING PHOSPHORIC ACIDS BY WET METHODS

Also Published As

Publication number Publication date
NL7115613A (en) 1972-05-16
NL169576C (en) 1982-08-02
DE2155617B2 (en) 1980-01-24
DE2155617A1 (en) 1972-05-25
SE371424B (en) 1974-11-18
NL169576B (en) 1982-03-01
JPS5510543B1 (en) 1980-03-17
GB1356586A (en) 1974-06-12

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Legal Events

Date Code Title Description
ST Notification of lapse