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GB416653A - Improvements in and relating to refrigerating systems - Google Patents

Improvements in and relating to refrigerating systems

Info

Publication number
GB416653A
GB416653A GB14938/34A GB1493834A GB416653A GB 416653 A GB416653 A GB 416653A GB 14938/34 A GB14938/34 A GB 14938/34A GB 1493834 A GB1493834 A GB 1493834A GB 416653 A GB416653 A GB 416653A
Authority
GB
United Kingdom
Prior art keywords
relating
refrigerating systems
sulphuric acid
dilute sulphuric
sodium
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
GB14938/34A
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 GB416653A publication Critical patent/GB416653A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Trifluoro-dimethylacetone for use as a refrigerant, may be prepared by heating trifluoroacetoacetic ester with dilute sulphuric acid, or by the condensation of ethyl trifluoroacetate and ethyl acetate in the presence of sodium in an ethereal solution to form sodium trifluor-acetoacetate which is then decomposed by excess dilute sulphuric acid.
GB14938/34A 1933-05-20 1934-05-17 Improvements in and relating to refrigerating systems Expired GB416653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US416653XA 1933-05-20 1933-05-20

Publications (1)

Publication Number Publication Date
GB416653A true GB416653A (en) 1934-09-18

Family

ID=21917693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14938/34A Expired GB416653A (en) 1933-05-20 1934-05-17 Improvements in and relating to refrigerating systems

Country Status (1)

Country Link
GB (1) GB416653A (en)

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