CA1044247A - Process for the production of silanol-stopped diorganopolysiloxanes - Google Patents

Process for the production of silanol-stopped diorganopolysiloxanes

Info

Publication number
CA1044247A
CA1044247A CA209,871A CA209871A CA1044247A CA 1044247 A CA1044247 A CA 1044247A CA 209871 A CA209871 A CA 209871A CA 1044247 A CA1044247 A CA 1044247A
Authority
CA
Canada
Prior art keywords
radicals
solid catalyst
acid
weight
silanol
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
CA209,871A
Other languages
English (en)
French (fr)
Inventor
Bruce A. Ashby
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 US452940A external-priority patent/US3903047A/en
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of CA1044247A publication Critical patent/CA1044247A/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
    • 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
    • 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
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Silicon Polymers (AREA)
CA209,871A 1974-03-20 1974-09-24 Process for the production of silanol-stopped diorganopolysiloxanes Expired CA1044247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US452940A US3903047A (en) 1973-10-23 1974-03-20 Process for the production of silanol-stopped diorgano-polysiloxanes

Publications (1)

Publication Number Publication Date
CA1044247A true CA1044247A (en) 1978-12-12

Family

ID=23798586

Family Applications (1)

Application Number Title Priority Date Filing Date
CA209,871A Expired CA1044247A (en) 1974-03-20 1974-09-24 Process for the production of silanol-stopped diorganopolysiloxanes

Country Status (7)

Country Link
JP (1) JPS585928B2 (ja)
BE (1) BE826906A (ja)
CA (1) CA1044247A (ja)
DE (1) DE2511475A1 (ja)
FR (1) FR2264837B1 (ja)
GB (1) GB1506734A (ja)
IT (1) IT1034417B (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549344A (en) * 1975-05-19 1979-08-08 Gen Electric Process for producing silanol end-stopped diorganopolysiloxane oils
JP2678371B2 (ja) * 1987-08-31 1997-11-17 東レ・ダウコーニング・シリコーン株式会社 末端にアルケニル基を有するオルガノポリシロキサンの製造方法
JP3862007B2 (ja) 2002-05-31 2006-12-27 信越化学工業株式会社 スルホン化樹脂触媒の再活性化方法
DE102007055484A1 (de) * 2007-11-21 2009-05-28 Evonik Goldschmidt Gmbh Verfahren zur Herstellung von Polydimethylsiloxanen an sulfonsauren Kationenaustauscherharzen
TWI742534B (zh) * 2019-02-20 2021-10-11 日商旭化成股份有限公司 硬化物、硬化物改質體及硬化方法

Also Published As

Publication number Publication date
IT1034417B (it) 1979-09-10
JPS50133299A (ja) 1975-10-22
GB1506734A (en) 1978-04-12
FR2264837A1 (ja) 1975-10-17
FR2264837B1 (ja) 1981-06-19
JPS585928B2 (ja) 1983-02-02
DE2511475A1 (de) 1975-09-25
BE826906A (fr) 1975-07-16

Similar Documents

Publication Publication Date Title
US3903047A (en) Process for the production of silanol-stopped diorgano-polysiloxanes
US3853933A (en) Continuous process for producing polysiloxane oils utilizing a carbon black catalyst
DE4205201A1 (de) Verfahren zur herstellung von organopolysiloxanen
DE2631957C3 (de) Verfahren zur Herstellung eines Copolymeren
US3978104A (en) Process for producing diorganopolysiloxane oils
DE4424001B4 (de) Verfahren zum Herstellen linearer Organosiloxanpolymere durch Disproportionierung
US4722987A (en) Method for the preparation of an organopolysiloxane
US3937684A (en) Process for producing high molecular weight diorganopolysiloxanes for use in heat vulcanizable silicone rubber compositions
DE19514987A1 (de) Verfahren zum Herstellen von vernetzten Siloxanen durch Disproportionierung
US4267298A (en) Process for preparing M-stopped silicone fluids from silanol fluids
KR100643547B1 (ko) 실리콘 중합체의 연속 제조방법
DE1745342B2 (de) Lineare Organopolysiloxane
DE1495859A1 (de) Organopolysiloxane und Verfahren zur Herstellung derselben
EP0499407B1 (en) Crosslinkers and chain extenders for room temperature vulcanization or crosslinking of polymers
KR20000017516A (ko) 실리콘 중합체의 제조방법
DE4424115B4 (de) Verfahren zum Herstellen von linearen Triorganosiloxyendgruppen aufweisenden Silicon-Flüssigkeiten mit geringem Silianolgehalt
CA1044247A (en) Process for the production of silanol-stopped diorganopolysiloxanes
US2883366A (en) Quaternary phosphonium compounds as polymerization catalysts for siloxanes
US2834754A (en) Process for removing volatile organopolysiloxanes from high molecular weight organopolysiloxanes by stripping gas and kneading
US3183254A (en) Organic silicone compounds and method for producing same
US3435001A (en) Method for hydrolyzing organochlorosilanes
US4563513A (en) Method for the preparation of a low-impurity organopolysiloxane by the polymerization of an organopolysiloxane oligomer
US2863897A (en) Method of preparing hydroxyl endblocked organopolysiloxane fluids
US3132167A (en) Process for preparing linear silanol chain-stopped diorganopolysiloxanes
US2990419A (en) Certificate of correction