GB783111A - Improvements in the preparation of potassium polyphosphate - Google Patents

Improvements in the preparation of potassium polyphosphate

Info

Publication number
GB783111A
GB783111A GB461055A GB461055A GB783111A GB 783111 A GB783111 A GB 783111A GB 461055 A GB461055 A GB 461055A GB 461055 A GB461055 A GB 461055A GB 783111 A GB783111 A GB 783111A
Authority
GB
United Kingdom
Prior art keywords
potassium polyphosphate
preparation
potassium
heating
chloride
Prior art date
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
GB461055A
Inventor
Peter William Brett Semmens
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB461055A priority Critical patent/GB783111A/en
Publication of GB783111A publication Critical patent/GB783111A/en
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
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/41—Polyphosphates of alkali metals
    • C01B25/412—Preparation from alkali metal orthophosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)

Abstract

A mixture of ammonium dihydrogen phosphate and potassium chloride is heated at below 800 DEG C. to prepare substantially linear polymeric potassium polyphosphate having a formula such as (KPO3)m. Preferably equimolecular proportions of the reactants are used. The heating preferably is first conducted at not above 400 DEG C., e.g. 2-300 DEG C., for an hour and then for two hours at a higher temperature. The removal of steam and ammonium chloride from the product may be assisted during heating by agitation or the passage of an inert gas thereover.
GB461055A 1955-02-16 1955-02-16 Improvements in the preparation of potassium polyphosphate Expired GB783111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB461055A GB783111A (en) 1955-02-16 1955-02-16 Improvements in the preparation of potassium polyphosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB461055A GB783111A (en) 1955-02-16 1955-02-16 Improvements in the preparation of potassium polyphosphate

Publications (1)

Publication Number Publication Date
GB783111A true GB783111A (en) 1957-09-18

Family

ID=9780408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB461055A Expired GB783111A (en) 1955-02-16 1955-02-16 Improvements in the preparation of potassium polyphosphate

Country Status (1)

Country Link
GB (1) GB783111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314750A (en) * 1962-04-20 1967-04-18 Monsanto Co Trimetaphosphate processes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314750A (en) * 1962-04-20 1967-04-18 Monsanto Co Trimetaphosphate processes

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