GB1506365A - Separation of linear(npcl2)n from cyclic(npcl2)n - Google Patents
Separation of linear(npcl2)n from cyclic(npcl2)nInfo
- 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
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.
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)
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)
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)
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 |
-
1976
- 1976-05-27 AU AU14353/76A patent/AU496974B2/en not_active Expired
- 1976-06-18 NL NL7606597A patent/NL178781C/en not_active IP Right Cessation
- 1976-06-22 CA CA255,373A patent/CA1079027A/en not_active Expired
- 1976-06-22 GB GB2599576A patent/GB1506365A/en not_active Expired
- 1976-06-22 FR FR7619003A patent/FR2315515A1/en active Granted
- 1976-06-22 JP JP7376676A patent/JPS5235198A/en active Granted
- 1976-06-23 BE BE168228A patent/BE843309A/en not_active IP Right Cessation
- 1976-06-23 IT IT2462676A patent/IT1063832B/en active
- 1976-06-23 DE DE19762627998 patent/DE2627998A1/en active Granted
Cited By (1)
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 |
---|---|
BE843309A (en) | 1976-12-23 |
FR2315515A1 (en) | 1977-01-21 |
NL7606597A (en) | 1976-12-27 |
DE2627998C2 (en) | 1987-07-09 |
NL178781B (en) | 1985-12-16 |
IT1063832B (en) | 1985-02-18 |
AU496974B2 (en) | 1978-11-16 |
FR2315515B1 (en) | 1979-09-07 |
AU1435376A (en) | 1977-12-01 |
CA1079027A (en) | 1980-06-10 |
JPS5516968B2 (en) | 1980-05-08 |
NL178781C (en) | 1986-05-16 |
DE2627998A1 (en) | 1977-01-27 |
JPS5235198A (en) | 1977-03-17 |
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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 |