(19)
(11) EP 0 681 625 A1

(12)

(43) Date of publication:
15.11.1995 Bulletin 1995/46

(21) Application number: 94907926.0

(22) Date of filing: 31.01.1994
(51) International Patent Classification (IPC): 
C01B 15/ 08( . )
D21C 9/ 16( . )
D21C 9/ 10( . )
D21H 11/ 00( . )
(86) International application number:
PCT/US1994/001085
(87) International publication number:
WO 1994/018386 (18.08.1994 Gazette 1994/19)
(84) Designated Contracting States:
BE DE ES FR GB IT PT SE

(30) Priority: 01.02.1993 US 19930012057

(71) Applicants:
  • SOLVAY INTEROX
    Houston, TX 77227 (US)
  • THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
    Albany, New York 12201-0009 (US)

(72) Inventors:
  • FRANCIS, Raymond, C.
    DeWitt, NY 13214 (US)
  • NICHOLSON, Daniel, J.
    Syracuse, NY 13210 (US)
  • TROUGHTON, Nicholas, A.
    B-1020 Brussels (BE)

(74) Representative: KUHNEN, WACKER & PARTNER 
Alois-Steinecker-Strasse 22
D-85354 Freising
D-85354 Freising (DE)

   


(54) IMPROVED PROCESS AND COMPOSITION FOR DELIGNIFYING A LIGNOCELLULOSIC MATERIAL