IT1256673B - CATALYST FOR POLYMERIZATION - Google Patents

CATALYST FOR POLYMERIZATION

Info

Publication number
IT1256673B
IT1256673B ITTO920135A ITTO920135A IT1256673B IT 1256673 B IT1256673 B IT 1256673B IT TO920135 A ITTO920135 A IT TO920135A IT TO920135 A ITTO920135 A IT TO920135A IT 1256673 B IT1256673 B IT 1256673B
Authority
IT
Italy
Prior art keywords
catalyst
polymerization
formula
electronegativity
organopolysiloxanes
Prior art date
Application number
ITTO920135A
Other languages
Italian (it)
Original Assignee
Dow Corning Sa
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 Dow Corning Sa filed Critical Dow Corning Sa
Publication of ITTO920135A0 publication Critical patent/ITTO920135A0/en
Publication of ITTO920135A1 publication Critical patent/ITTO920135A1/en
Application granted granted Critical
Publication of IT1256673B publication Critical patent/IT1256673B/en

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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Polymers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Un catalizzatore di alogenuro di fosfonitrile per l'impiego nella polimerizzazione di organopolisilossani, ha la formula generale (FORMULA), in cui X è alogeno, M è un elemento con una elettronegatività da 1,0 a 2,0,R è (C1-12) - alchile, n è da 1 a 6, v è la sua valenza o stato di ossidazione di M, e t ha un valore da 0 a v-1. Viene pure rivendicato un metodo per la preparazione del catalizzatore e per il suo uso nel processo di polimerizzazione, specialmente mediante condensazione.A phosphonitrile halide catalyst for use in the polymerization of organopolysiloxanes, has the general formula (FORMULA), wherein X is halogen, M is an element with an electronegativity of 1.0 to 2.0, R is (C1- 12) - alkyl, n is from 1 to 6, v is its valence or oxidation state of M, and t has a value from 0 to v-1. A method is also claimed for the preparation of the catalyst and for its use in the polymerization process, especially by condensation.

ITTO920135A 1991-02-21 1992-02-20 CATALYST FOR POLYMERIZATION IT1256673B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919103656A GB9103656D0 (en) 1991-02-21 1991-02-21 Catalyst for polymerisation

Publications (3)

Publication Number Publication Date
ITTO920135A0 ITTO920135A0 (en) 1992-02-20
ITTO920135A1 ITTO920135A1 (en) 1993-08-20
IT1256673B true IT1256673B (en) 1995-12-12

Family

ID=10690358

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO920135A IT1256673B (en) 1991-02-21 1992-02-20 CATALYST FOR POLYMERIZATION

Country Status (10)

Country Link
JP (1) JP3207905B2 (en)
KR (1) KR100239611B1 (en)
AU (1) AU1108092A (en)
CA (1) CA2061006A1 (en)
DE (1) DE4205200A1 (en)
ES (1) ES2046103B1 (en)
FR (1) FR2676063B1 (en)
GB (2) GB9103656D0 (en)
IT (1) IT1256673B (en)
NL (1) NL9200225A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4317909A1 (en) * 1993-05-28 1994-12-01 Wacker Chemie Gmbh Process for condensing and / or equilibrating organosilicon compounds
DE4323185C1 (en) * 1993-07-10 1995-01-19 Nuenchritz Chemie Gmbh Process for the preparation of polyorganosiloxanes
US5510441A (en) * 1993-07-15 1996-04-23 General Electric Company Process for producing octamethyltrisiloxane
US5403909A (en) * 1993-07-15 1995-04-04 General Electric Company Catalysts for polycondensation and redistribution of organosiloxane polymers
US5420221A (en) * 1993-07-15 1995-05-30 General Electric Company Process for the production of linear organosiloxane polymers by disproportionation
US6136996A (en) 1995-12-13 2000-10-24 General Electric Company Catalysts for polycondensation and redistribution of organosiloxane polymers
US5698654A (en) * 1996-07-30 1997-12-16 General Electric Company Process for preparing hydrogen siloxane copolymers
US5753751A (en) * 1996-10-24 1998-05-19 General Electric Company Process for preparing self-curable alkenyl hydride siloxane copolymers and coating composition
GB9727136D0 (en) * 1997-12-24 1998-02-25 Dow Corning Catalyst composition
US6040412A (en) * 1998-10-14 2000-03-21 Dow Corning S.A. Process for preparing chain-extended organopolysiloxanes
GB9827069D0 (en) 1998-12-09 1999-02-03 Dow Corning Polymerisation catalyst

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279019B (en) * 1967-01-04 1968-10-03 Wacker Chemie Gmbh Process for the preparation of organohalosilicon compounds
US3449091A (en) * 1967-01-27 1969-06-10 Du Pont Halide-modified phosphonitrilic chlorides
GB1242405A (en) * 1967-10-12 1971-08-11 Grace W R & Co Adducts of linear phosphonitrilic chloride polymers
DE1794219B2 (en) * 1968-09-25 1972-01-05 Wacker Chemie GmbH, 8000 München METHOD FOR MANUFACTURING ORGANOPOLYSILOXANE ELASTOMERS
US3706775A (en) * 1970-12-17 1972-12-19 Wacker Chemie Gmbh Method of preparing high molecular weight linear organopolysiloxanes
GB1436352A (en) * 1972-03-06 1976-05-19 Fmc Corp Oligometric phosphazene derivatives having flame-retardant properties
JPS5819604B2 (en) * 1978-05-04 1983-04-19 大塚化学薬品株式会社 Method for producing phosphazene oligomer
US4293675A (en) * 1980-02-26 1981-10-06 Minnesota Mining And Manufacturing Company Antimony halide-organic phosphonate ester cationic polymerization catalysts
DE3524484A1 (en) * 1985-07-09 1987-01-15 Wacker Chemie Gmbh METHOD FOR THE PRODUCTION OF LINEAR ORGANOPOLYSILOXANS WITH TRIORGANOSILOXY GROUPS AS FINAL UNITS
DE3725377A1 (en) * 1987-07-31 1989-02-09 Wacker Chemie Gmbh METHOD FOR CONDENSING AND / OR AEQUILIBRATING ORGANO (POLY) SILOXANES
DE3727182A1 (en) * 1987-08-14 1989-02-23 Wacker Chemie Gmbh PRODUCTION AND PROCESSING OF MIXTURES WITH A HIGH CONTENT OF ORGANOCYCLOSILOXANES
GB8902936D0 (en) * 1989-02-09 1989-03-30 Dow Corning Process for the production of organosilicon compounds

Also Published As

Publication number Publication date
ES2046103B1 (en) 1994-08-01
ES2046103A1 (en) 1994-01-16
KR920016472A (en) 1992-09-24
GB9103656D0 (en) 1991-04-10
NL9200225A (en) 1992-09-16
KR100239611B1 (en) 2000-01-15
CA2061006A1 (en) 1992-08-22
JPH04328128A (en) 1992-11-17
GB2252969A (en) 1992-08-26
DE4205200A1 (en) 1992-08-27
GB9203217D0 (en) 1992-04-01
FR2676063B1 (en) 1993-10-01
AU1108092A (en) 1992-08-27
JP3207905B2 (en) 2001-09-10
ITTO920135A0 (en) 1992-02-20
ITTO920135A1 (en) 1993-08-20
FR2676063A1 (en) 1992-11-06

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990226