(19)
(11) EP 0 423 780 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.10.1992 Bulletin 1992/44

(43) Date of publication A2:
24.04.1991 Bulletin 1991/17

(21) Application number: 90119969.5

(22) Date of filing: 18.10.1990
(51) International Patent Classification (IPC)5: B22C 1/22, C08G 59/40
(84) Designated Contracting States:
CH DE FR GB IT LI NL SE

(30) Priority: 20.10.1989 DE 3934940

(71) Applicant: GVT- GIESSEREI VERFAHRENS-TECHNIK GmbH
D-90592 Schwarzenbruck (DE)

(72) Inventors:
  • Cobett, Tom
    Westminster CA 92683 (US)
  • Markham, Neil
    Long Beach CA 90808 (US)
  • Teltschik, Ralf
    W-8501 Schwarzenbruck (DE)

(74) Representative: Matschkur, Götz, Lindner Patent- und Rechtsanwälte 
Postfach 11 91 09
90101 Nürnberg
90101 Nürnberg (DE)


(56) References cited: : 
   
       


    (54) Novel heat curable organic resin foundry sand binder process


    (57) A heat curable organic foundry sand binder based upon liquid epoxide or epoxide novolac resin and a latent dicyandiamide or imidazole curing agent, with or without an imidazole accelerator, which may be used as a direct replacement for other "Hot Box" and "Warm Box foundry resin binders.





    Search report