GB594485A - Improvements in and relating to methods of hydrolyzing dimethyldihalogenosilanes - Google Patents

Improvements in and relating to methods of hydrolyzing dimethyldihalogenosilanes

Info

Publication number
GB594485A
GB594485A GB10409/45A GB1040945A GB594485A GB 594485 A GB594485 A GB 594485A GB 10409/45 A GB10409/45 A GB 10409/45A GB 1040945 A GB1040945 A GB 1040945A GB 594485 A GB594485 A GB 594485A
Authority
GB
United Kingdom
Prior art keywords
gently
sodium
dimethyldihalogenosilanes
sulphate
hydrolysis
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
GB10409/45A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB594485A publication Critical patent/GB594485A/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

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)

Abstract

Dimethyldihalogenosilanes are hydrolysed by gently flowing them on the surface of a gently swirling hydrolysis medium consisting of an aqueous solution of a salt of metal from the first or second group of the periodic table. The product is a dimethylsilicone containing a higher proportion of high molecular weight polymers than usual. Suitable salts are sodium chloride, sodium carbonate, sodium sulphate, calcium nitrate, zinc chloride, copper sulphate, potassium carbonate and magnesium sulphate. The hydrolysis medium should have a specific gravity of at least 1.1. The solution may be gently swirled by means of a propeller sunk deeply therein. In the example, sodium carbonate is used for the hydrolysis and the addition of the dimethyldichlorosilane is stopped when the solution becomes acid. The products are particularly suitable for the preparation of elastomers by the methods described in Specifications 592,018 and 594,481.
GB10409/45A 1944-04-26 1945-04-25 Improvements in and relating to methods of hydrolyzing dimethyldihalogenosilanes Expired GB594485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US594485XA 1944-04-26 1944-04-26

Publications (1)

Publication Number Publication Date
GB594485A true GB594485A (en) 1947-11-12

Family

ID=22023013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10409/45A Expired GB594485A (en) 1944-04-26 1945-04-25 Improvements in and relating to methods of hydrolyzing dimethyldihalogenosilanes

Country Status (1)

Country Link
GB (1) GB594485A (en)

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