(19)
(11) EP 0 915 987 A2

(12)

(43) Date of publication:
19.05.1999 Bulletin 1999/20

(21) Application number: 98922651.0

(22) Date of filing: 06.04.1998
(51) International Patent Classification (IPC): 
C07K 14/ 00( . )
C12P 21/ 02( . )
(86) International application number:
PCT/EP1998/001996
(87) International publication number:
WO 1998/048032 (29.10.1998 Gazette 1998/43)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 21.04.1997 US 19970044727P

(71) Applicants:
  • DONLAR CORPORATION
    Bedford Park, IL 60501 (US)
  • University of Massachusetts
    Boston, MA 02108 (US)

(72) Inventors:
  • TIRRELL, David, A.
    Sunderland, MA 01375 (US)
  • DEL GROSSO, Michael
    D-63579 Freigericht (DE)
  • SIEGMEIER, Rainer
    D-61350 Bad Homburg (DE)
  • BOMMARIUS, Andreas
    D-60596 Frankfurt (DE)

(74) Representative: Vossius, Volker, Dr., et al 
Dr. Volker Vossius, Patentanwaltskanzlei - Rechtsanwaltskanzlei, Holbeinstrasse 5
81679 München
81679 München (DE)

   


(54) POLY-($g(a)-L-ASPARTIC ACID), POLY-($g(a)-L-GLUTAMIC ACID) AND COPOLYMERS OF L-ASP AND L-GLU, METHOD FOR THEIR PRODUCTION AND THEIR USE