GB1136718A - Polymerizing organosilicon compounds - Google Patents

Polymerizing organosilicon compounds

Info

Publication number
GB1136718A
GB1136718A GB2118366A GB2118366A GB1136718A GB 1136718 A GB1136718 A GB 1136718A GB 2118366 A GB2118366 A GB 2118366A GB 2118366 A GB2118366 A GB 2118366A GB 1136718 A GB1136718 A GB 1136718A
Authority
GB
United Kingdom
Prior art keywords
contacting
atoms
bonded
average
alkali metal
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
GB2118366A
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 Corp
Original Assignee
Dow Corning Corp
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 Corp filed Critical Dow Corning Corp
Publication of GB1136718A publication Critical patent/GB1136718A/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
    • C08G77/48—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/50—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages
    • 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
    • C08G77/48—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/50—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages
    • C08G77/52—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages containing aromatic rings

Abstract

1,136,718. Organosilicon polymers. DOW CORNING CORP. 12 May, 1966 [12 May, 1965], No. 21183/66. Heading C3T. Organosilicon polymers are made by contacting (a) at least one organosilicon compound having an average of at least 1 Si-bonded OH group per molecule, each Si atom present being bonded to an average of 1 to 3 radicals which are phenyl, methyl, alkylene of 1 to 3 C atoms or phenylene radicals, any remaining valencies of the Si atoms being satisfied by oxygen in the form of siloxane linkages, and at least 1% by wt. of (a) of (b) liquid dimethyl sulphoxide, the contacting being effected in the presence of (c) an alkali polymerization catalyst having a pH of at least 12 when measured in an aqueous solution of a concentration not greater than 0À1 N. Catalysts (c) specified are quaternary ammonium and alkali metal silanolates, siloxanolates, hydrocarbonoxides and hydroxides, and alkali metal hydrides, phosphates and silicates. In typical Examples (1) a hydroxylated dimethyl polysiloxane, and (8) 1,4-bis-(dimethylhydroxysilyl)-benzene, were polymerized by contacting them with dimethyl sulphoxide and potassium phenoxide.
GB2118366A 1965-05-12 1966-05-12 Polymerizing organosilicon compounds Expired GB1136718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45529265A 1965-05-12 1965-05-12

Publications (1)

Publication Number Publication Date
GB1136718A true GB1136718A (en) 1968-12-18

Family

ID=23808218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2118366A Expired GB1136718A (en) 1965-05-12 1966-05-12 Polymerizing organosilicon compounds

Country Status (1)

Country Link
GB (1) GB1136718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540128A1 (en) * 1983-01-27 1984-08-03 Rhone Poulenc Spec Chim ORGANOPOLYSILOXANIC COMPOSITIONS CONTAINING POLYACYLOXYSILANES AND HARDENING VERY QUICKLY IN ELASTOMERS IN THE PRESENCE OF A METAL HYDROXIDE TYPE ACCELERATOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540128A1 (en) * 1983-01-27 1984-08-03 Rhone Poulenc Spec Chim ORGANOPOLYSILOXANIC COMPOSITIONS CONTAINING POLYACYLOXYSILANES AND HARDENING VERY QUICKLY IN ELASTOMERS IN THE PRESENCE OF A METAL HYDROXIDE TYPE ACCELERATOR
EP0118325A1 (en) * 1983-01-27 1984-09-12 Rhone-Poulenc Chimie Polyacyloxysilane-containing organopolysiloxane compositions hardening into elastomers in the presence of metal hydroxide

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