[go: up one dir, main page]

GB1293944A - Preparation of cyclic siloxanes - Google Patents

Preparation of cyclic siloxanes

Info

Publication number
GB1293944A
GB1293944A GB1988069A GB1988069A GB1293944A GB 1293944 A GB1293944 A GB 1293944A GB 1988069 A GB1988069 A GB 1988069A GB 1988069 A GB1988069 A GB 1988069A GB 1293944 A GB1293944 A GB 1293944A
Authority
GB
United Kingdom
Prior art keywords
preparation
cyclic siloxanes
hexamethylcyclotrisiloxane
april
decamethylcyclopenta
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
GB1988069A
Inventor
Thomas Charles Kendrick
David Randall Thomas
John Francis
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.)
Dow Silicones UK Ltd
Original Assignee
Dow Corning Ltd
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 Ltd filed Critical Dow Corning Ltd
Priority to GB1988069A priority Critical patent/GB1293944A/en
Publication of GB1293944A publication Critical patent/GB1293944A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/21—Cyclic compounds having at least one ring containing silicon, but no carbon in the ring
    • 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
    • C08G77/045—Polysiloxanes containing less than 25 silicon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Silicon Polymers (AREA)

Abstract

1293944 Hexamethylcyclotrisiloxane DOW CORNING Ltd 15 April 1970 [18 April 1969] 19880/69 Heading C3S Hexamethylcyclotrisiloxane is prepared by heating octamethylcyclotetra- or decamethylcyclopenta-siloxane to 550-750‹ C.
GB1988069A 1969-04-18 1969-04-18 Preparation of cyclic siloxanes Expired GB1293944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1988069A GB1293944A (en) 1969-04-18 1969-04-18 Preparation of cyclic siloxanes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1988069A GB1293944A (en) 1969-04-18 1969-04-18 Preparation of cyclic siloxanes

Publications (1)

Publication Number Publication Date
GB1293944A true GB1293944A (en) 1972-10-25

Family

ID=10136722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1988069A Expired GB1293944A (en) 1969-04-18 1969-04-18 Preparation of cyclic siloxanes

Country Status (1)

Country Link
GB (1) GB1293944A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328241A3 (en) * 1988-01-15 1990-12-05 Dow Corning Corporation Preparation of cyclopolydiorganosiloxanes via vapor phase rearrangement
EP0822196A3 (en) * 1996-07-29 1998-06-17 Dow Corning Toray Silicone Company, Ltd. Method for the separation of hexamethylcyclotrisiloxane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328241A3 (en) * 1988-01-15 1990-12-05 Dow Corning Corporation Preparation of cyclopolydiorganosiloxanes via vapor phase rearrangement
EP0822196A3 (en) * 1996-07-29 1998-06-17 Dow Corning Toray Silicone Company, Ltd. Method for the separation of hexamethylcyclotrisiloxane

Similar Documents

Publication Publication Date Title
CA962900A (en) Method of growing silicone elastomer
ZA704502B (en) Cyclic oxygenation of bod-containing water
GB1293944A (en) Preparation of cyclic siloxanes
JPS51143616A (en) Method for stabilizing capronium chloride
FR1495559A (en) Polyurethane, method of preparation and resulting adhesive compositions
BE759495A (en) PREPARATION OF SILOXANES BY REDISTRIBUTION
CA967104A (en) Device by way of example intended to be used as ski-lift
CA817918A (en) Preparation of organopolysiloxanes by siloxane rearrangement
CA837649A (en) Preparation of organosilicon sulfides
CA691035A (en) Method of bonding glass fabrics to silicone rubbers
AU3590768A (en) Preparation of organopolysiloxanes by siloxane rearrangement
CA851734A (en) Preparation of cyclic carbonates from acetylenic glycols
CA964967A (en) Method of deposition of silicon by using pyrolysis of silane
CA591630A (en) Method of preparing polysiloxanes
CA851732A (en) Preparation of cyclic carbonates
CA820900A (en) Method of producing ethyl substituted cyclic compounds
AU433976B2 (en) Method of bonding silicones to silicones
CA601688A (en) Preparation of carbalkoxyalkyl-containing organopolysiloxanes
CA885136A (en) Methods of securing electrical components to members
CA691659A (en) Preparation of cyclic sulfides
CA807684A (en) Method for preparation of cyclic organohydrosiloxanes
CA728691A (en) Method for conversion of 1,2-dinitroparaffins to 1-nitroolefins
CA888715A (en) Intermediates in preparation of lincomycin analogs
CA624455A (en) Preparation of organopolysiloxanes containing silicon-bonded carboxyalkyl groups
AU446751B2 (en) Improvements inthe provision of lights as aids to navigation

Legal Events

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