(19)
(11) EP 0 221 249 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.06.1988 Bulletin 1988/25

(43) Date of publication A2:
13.05.1987 Bulletin 1987/20

(21) Application number: 86110384

(22) Date of filing: 28.07.1986
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 04.11.1985 US 794529

(71) Applicant: ALUMINUM COMPANY OF AMERICA
 ()

(72) Inventors:
  • Tsai, Mei-Yuan
     ()
  • Laemmle, Joseph Thomas
     ()
  • Jacoby, John Elwood
     ()

   


(54) Parting composition


(57) A parting composition contains alpha-olefin oligomer having a viscosity in the range of about 1-3 cs at 450°F. The parting composition in one aspect can be blended with a fatty ester or fatty alcohol. The parting composition is useful for the continuous casting of molten metal such as aluminum or aluminum alloy, which may contain lithium. A casting process for continuously casting molten metal, particularly containing lithium, through a mold or header includes applying a parting lubricant containing alpha-olefin oligomer. The lithium-­containing alloy may be continuously cast by direct chill with a direct chill coolant which is a moisture barrier liquid employing the disclosed parting compositions.







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