(19)
(11) EP 0 297 046 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.06.1989 Bulletin 1989/23

(43) Date of publication A2:
28.12.1988 Bulletin 1988/52

(21) Application number: 88810412.2

(22) Date of filing: 16.06.1988
(51) International Patent Classification (IPC)4: C10M 173/02
// (C10N40/08, 40:20),(C10M173/02, 137:04)
(84) Designated Contracting States:
BE DE ES FR GB IT NL SE

(30) Priority: 25.06.1987 GB 8714889

(71) Applicant: CIBA-GEIGY AG
4002 Basel (CH)

(72) Inventors:
  • Allsop, Brian
    Flixton Manchester M31 2QU (GB)
  • Sedlak, Dieter, Dr.
    D-8900 Augsburg (DE)
  • Hassfurther, Gudrun, Dr.
    D-8900 Augsburg (DE)
  • Sedlmayr, Benno
    D-8000 München 80 (DE)


(56) References cited: : 
   
       


    (54) Emulsions


    (57) The invention provides an emulsion comprising
    (a) a water insoluble liquid phosphate of formula I:

    where each of R₁, R₂ and R₃ are the same or different and represent hydrogen, or an alkyl group having from 1 to 9 carbon atoms, or one or two of R₁, R₂ and R₃ are aralkyl groups having 7 to 9 carbon atoms and the other two or one are hydrogen, and R₄ represents an alkyl group having 1 to 13 carbon atoms or is a group of the formula:

    wherein R₁, R₂ and R₃ are as defined above,
    (b) at least one emulsifying agent and (c) water.
    The emulsions are useful as hydraulic fluids or metal working lubricants.





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