GB1506365A - Separation of linear(npcl2)n from cyclic(npcl2)n - Google Patents

Separation of linear(npcl2)n from cyclic(npcl2)n

Info

Publication number
GB1506365A
GB1506365A GB2599576A GB2599576A GB1506365A GB 1506365 A GB1506365 A GB 1506365A GB 2599576 A GB2599576 A GB 2599576A GB 2599576 A GB2599576 A GB 2599576A GB 1506365 A GB1506365 A GB 1506365A
Authority
GB
United Kingdom
Prior art keywords
cyclic
linear
npcl
solvent
pncl
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
GB2599576A
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.)
Horizons Research Inc
Original Assignee
Horizons Research Inc
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 Horizons Research Inc filed Critical Horizons Research Inc
Publication of GB1506365A publication Critical patent/GB1506365A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G79/00—Macromolecular 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
    • C08G79/02—Macromolecular 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
    • C08G79/025—Polyphosphazenes
    • 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
    • C01B21/097—Compounds containing nitrogen and non-metals and optionally metals containing phosphorus atoms
    • 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
    • C01B21/097—Compounds containing nitrogen and non-metals and optionally metals containing phosphorus atoms
    • C01B21/098—Phosphonitrilic dihalides; Polymers thereof
    • C01B21/0986—Phosphonitrilic dichlorides; Polymers thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)

Abstract

1506365 Linear (NPCL 2 ) n ; polyphosphazenes HORIZONS RESEARCH Inc 22 June 1976 [23 June 1975] 25995/76 Heading C1A Linear (PNCl 2 ) n are separated from cyclic (PNCl 2 ) n which have a degree of polymerization of 3 to 7 by (i) thermally polymerizing cyclophosphazene (NPCl 2 ) 3 or (NPCl 2 ) 4 , or mixtures thereof, (ii) contacting the mixed product of linear and cyclic (PNCl 2 ) n with a solvent or solvent mixture selected from aliphatic hydrocarbons of boiling point at least 65‹ C., and (iii) separating a solution of the cyclic species from the insoluble linear polydichlorophosphazenes. The amount of solvent used may be 2-6 the weight of the product of the thermal polymerization. In particular, a process is described wherein linear polyphosphazenes of general formula where n is 50 to 20,000, and each R represents an alkyl, substituted alkyl, aryl or arylalkyl, with at least some of the R groups possessing unsaturation, the process comprising (a) thermally polymerizing at least one polydichlorophosphazene (NPCl 2 ) m in which m is 3 to 7, yielding a product of linear (NPCl 2 ) q where q is greater than 7 and cyclic (PNCl 2 ) x where x is 3 to 7, (b) extracting the cyclic species from the product using an aliphatic hydrocarbon with a boiling point of at least 65‹ C. to produce a solution of cyclic, polydichlorophosphazenes and recovering and reacting a solid residue containing linear species with an alkali metal alkoxide (e.g. NaOR) to yield the polyphosphazene. The hydrocarbon solvent is removed from the solution and the residual cyclic polydichlorophosphazenes are recycled to the polymerizing step. The solvent, purified if necessaary, may be re-used.
GB2599576A 1975-06-23 1976-06-22 Separation of linear(npcl2)n from cyclic(npcl2)n Expired GB1506365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58923975A 1975-06-23 1975-06-23

Publications (1)

Publication Number Publication Date
GB1506365A true GB1506365A (en) 1978-04-05

Family

ID=24357201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2599576A Expired GB1506365A (en) 1975-06-23 1976-06-22 Separation of linear(npcl2)n from cyclic(npcl2)n

Country Status (9)

Country Link
JP (1) JPS5235198A (en)
AU (1) AU496974B2 (en)
BE (1) BE843309A (en)
CA (1) CA1079027A (en)
DE (1) DE2627998A1 (en)
FR (1) FR2315515A1 (en)
GB (1) GB1506365A (en)
IT (1) IT1063832B (en)
NL (1) NL178781C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3633115A1 (en) 2015-04-15 2020-04-08 Ocado Innovation Limited Robotic storage system and method of providing such robotic storage system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0657716B2 (en) * 1984-08-15 1994-08-03 学校法人日本大学 Dental polymerization curable phosphazene compound
JPH0633295B2 (en) * 1985-07-29 1994-05-02 学校法人日本大学 Monomer composite composition

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755537A (en) * 1971-10-29 1973-08-28 Firestone Tire & Rubber Co Process for separating oligomers from (npci2) rubber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3633115A1 (en) 2015-04-15 2020-04-08 Ocado Innovation Limited Robotic storage system and method of providing such robotic storage system

Also Published As

Publication number Publication date
FR2315515A1 (en) 1977-01-21
NL7606597A (en) 1976-12-27
NL178781C (en) 1986-05-16
JPS5235198A (en) 1977-03-17
CA1079027A (en) 1980-06-10
AU1435376A (en) 1977-12-01
IT1063832B (en) 1985-02-18
DE2627998A1 (en) 1977-01-27
DE2627998C2 (en) 1987-07-09
JPS5516968B2 (en) 1980-05-08
NL178781B (en) 1985-12-16
AU496974B2 (en) 1978-11-16
FR2315515B1 (en) 1979-09-07
BE843309A (en) 1976-12-23

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee