(19)
(11) EP 0 349 787 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.04.1990 Bulletin 1990/16

(43) Date of publication A2:
10.01.1990 Bulletin 1990/02

(21) Application number: 89110384.8

(22) Date of filing: 08.06.1989
(51) International Patent Classification (IPC)5: C10M 133/08, C10M 133/16, C10M 141/06, C10M 141/08, C10M 141/10, C10M 149/12, C10M 149/04
// C10M173/00 , C10N30:04, C10N40:24
(84) Designated Contracting States:
DE GB

(30) Priority: 08.06.1988 JP 141274/88
12.07.1988 JP 173417/88

(71) Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
Shimogyo-ku Kyoto (JP)

(72) Inventors:
  • Nishizaki, Shoichi
    Hikone Shiga (JP)
  • Mayuzumi, Tominobu
    Nishikyo-ku Kyoto (JP)

(74) Representative: Strehl Schübel-Hopf Groening & Partner 
Maximilianstrasse 54
80538 München
80538 München (DE)


(56) References cited: : 
   
       


    (54) An additive to metal cold rolling oil


    (57) This invention relates to a cold rolling oil additive and an emulsion type cold rolling oil composition. The additive according to the invention is a compound obtainable by reacting at least one member of polyalkylenepolyamines and polyalkyleneimines each containing 3 to 200 N atoms with at least one member of fatty acid compounds, glycidyl ether com­pounds and epoxy compounds. With this additive, cold rolling oil compositions having excellent lubricating and stable circulation characteristics can be easily obtained.





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