GB2305661B - New catalysts for polycondensation and redistribution of organosiloxane polymers - Google Patents

New catalysts for polycondensation and redistribution of organosiloxane polymers

Info

Publication number
GB2305661B
GB2305661B GB9623505A GB9623505A GB2305661B GB 2305661 B GB2305661 B GB 2305661B GB 9623505 A GB9623505 A GB 9623505A GB 9623505 A GB9623505 A GB 9623505A GB 2305661 B GB2305661 B GB 2305661B
Authority
GB
United Kingdom
Prior art keywords
redistribution
polycondensation
new catalysts
organosiloxane polymers
organosiloxane
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 - Fee Related
Application number
GB9623505A
Other versions
GB2305661A (en
GB9623505D0 (en
Inventor
Slawomir Rubinsztajn
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.)
General Electric Co
Original Assignee
General Electric 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
Priority claimed from US08/091,900 external-priority patent/US5403909A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB9623505D0 publication Critical patent/GB9623505D0/en
Publication of GB2305661A publication Critical patent/GB2305661A/en
Application granted granted Critical
Publication of GB2305661B publication Critical patent/GB2305661B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14—Phosphorus; Compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/24—Nitrogen compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/062—Organo-phosphoranes without P-C bonds
    • C07F9/065—Phosphoranes containing the structure P=N-
    • C07F9/067—Polyphosphazenes containing the structure [P=N-n]
    • 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
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/06—Preparatory processes
    • C08G77/08—Preparatory processes characterised by the catalysts used

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Polymers (AREA)
GB9623505A 1993-07-15 1994-07-11 New catalysts for polycondensation and redistribution of organosiloxane polymers Expired - Fee Related GB2305661B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/091,900 US5403909A (en) 1993-07-15 1993-07-15 Catalysts for polycondensation and redistribution of organosiloxane polymers
GB9413958A GB2279945B (en) 1993-07-15 1994-07-11 New catalysts for polycondensation and redistribution of organosiloxane polymers

Publications (3)

Publication Number Publication Date
GB9623505D0 GB9623505D0 (en) 1997-01-08
GB2305661A GB2305661A (en) 1997-04-16
GB2305661B true GB2305661B (en) 1998-02-18

Family

ID=26305243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9623505A Expired - Fee Related GB2305661B (en) 1993-07-15 1994-07-11 New catalysts for polycondensation and redistribution of organosiloxane polymers

Country Status (1)

Country Link
GB (1) GB2305661B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9923341D0 (en) * 1999-10-05 1999-12-08 Barker George G Cricket training apparatus
CN114044904B (en) * 2021-11-02 2023-03-31 湖北兴瑞硅材料有限公司 Synthetic method of supported linear phosphonitrile chloride catalyst

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626414A1 (en) * 1993-05-28 1994-11-30 Wacker-Chemie GmbH Organosilicon group containing phosphazenes, process for their preparation and their use

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626414A1 (en) * 1993-05-28 1994-11-30 Wacker-Chemie GmbH Organosilicon group containing phosphazenes, process for their preparation and their use

Also Published As

Publication number Publication date
GB2305661A (en) 1997-04-16
GB9623505D0 (en) 1997-01-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070711