GB992377A - Process for the production of phosphonitriles - Google Patents

Process for the production of phosphonitriles

Info

Publication number
GB992377A
GB992377A GB416/64A GB41664A GB992377A GB 992377 A GB992377 A GB 992377A GB 416/64 A GB416/64 A GB 416/64A GB 41664 A GB41664 A GB 41664A GB 992377 A GB992377 A GB 992377A
Authority
GB
United Kingdom
Prior art keywords
trimer
tetramer
solvent
pentane
nh4cl
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
GB416/64A
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.)
WR Grace and Co
Original Assignee
WR Grace and Co
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 WR Grace and Co filed Critical WR Grace and Co
Publication of GB992377A publication Critical patent/GB992377A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/547Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6564Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
    • C07F9/6581Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms
    • C07F9/65812Cyclic phosphazenes [P=N-]n, n>=3
    • C07F9/65814Cyclic phosphazenes [P=N-]n, n>=3 n = 3 or 4
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G79/00Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule
    • C08G79/02Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule a linkage containing phosphorus
    • C08G79/025Polyphosphazenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

2,4,6 - Trichloro - 2,4,6 - triphenyltriphosphonitrile, and 2,4,6,8 - tetrachloro - 2,4,6,8 - tetraphenyl tetraphosphonitrile, of the respective formulae <FORM:0992377/C2/1> and <FORM:0992377/C2/2> where #f represents phenyl, are prepared by reacting phenyltetrachlorophosphorane with solid NH4Cl of particle size below 10m , in an inert solvent for the phosphorane, at 60-140 DEG C. Suitable solvents are hydrocarbons or halogenated hydrocarbons of boiling-point at least 60 DEG C. (e.g. n-heptane, CCl4, tetrachloroethylene, chlorobenzene, or chloropicrin) and preferred quantities of reactants are 0.1 to 1 mol. of NH4Cl/litre of solvent to less than 0.02 mols. of phosphorane/litre of solvent. The NH4Cl is suspended in the solvent, suitably by passing HCl and NH3 into it simultaneously, or passing in a smoke of NH4Cl in an inert gas (e.g. N2, argon or helium), to give a dispersion of particles of size between 1m and 10m . The phosphorane is suitably added to the refluxing suspension at such a rate as to maintain the desired reactant concentration. The trimer and tetramer formed may be separated by: (a) fractional crystallization from suitable solvent pairs (e.g. benzene-pentane or CHCl3-hexane), after purification of the reaction products by extraction at 60-140 DEG C. with a mixture of water and a solvent for the trimer and tetramer that itself has an aqueous solubility below 1% (e.g. n-heptane, hexane, pentane, CCl4, or benzene), when the water hydrolyses higher linear polymers to water-soluble products, and the trimer and tetramer are taken up in the non-aqueous phase; (b) by continuous extraction of the purified trimer-tetramer mixture with an aliphatic hydrocarbon of up to six contiguous carbon atoms, boiling below about 90 DEG C. (e.g. pentane, or hexane), when the trimer is extracted first. Cis and trans forms of the trimer may be separated by fractional crystallization from benzene, the cis form crystallizing first as a lesser soluble benzene adduct. Examples are given for the preparation of the trimer and tetramer in (1) chlorobenzene at various reaction temperatures; (2) chlorobenzene, using granular NH4Cl as a comparison; (3) heptane; also for purification of the reaction mixture by the above hydrolytic process; separation of the trimer-tetramer by (a) crystallization from chlorobenaene, followed by recrystallization from chloraform-pentane; (b) continuous extraction with pentane; separation of the cis and trans trimers by fractional crystallization from benzene. The cyclic polymers are useful for the preparation of thermally stable polymers by ammoniation and condensation at temperatures above 200 DEG C. Specification 981,821 is referred to.
GB416/64A 1963-05-06 1964-01-03 Process for the production of phosphonitriles Expired GB992377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27826563A 1963-05-06 1963-05-06

Publications (1)

Publication Number Publication Date
GB992377A true GB992377A (en) 1965-05-19

Family

ID=23064332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB416/64A Expired GB992377A (en) 1963-05-06 1964-01-03 Process for the production of phosphonitriles

Country Status (2)

Country Link
DE (2) DE1242227B (en)
GB (1) GB992377A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023239321A1 (en) * 2022-06-06 2023-12-14 Sallanti Ali Low density ammonium nitrate production method in granular form

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038307A (en) * 1983-08-11 1985-02-27 Nippon Daigaku Composite material for plugging

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB905314A (en) * 1958-04-25 1962-09-05 Albright & Wilson Mfg Ltd The production of cyclic phosphonitrilic chloride polymers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023239321A1 (en) * 2022-06-06 2023-12-14 Sallanti Ali Low density ammonium nitrate production method in granular form

Also Published As

Publication number Publication date
DE1242227B (en) 1967-06-15
DE1223382B (en) 1966-08-25

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