Title (en)

MODIFIED ORGANOSOLV PULPING

Title (de)

MODIFIZIERTER ORGANOSOLV-AUFSCHLUSS

Title (fr)

FABRICATION DE PATE A PAPIER AVEC UN SOLVANT ORGANIQUE MODIFIE

Publication

EP 0830475 A4 19980826 (EN)

Application

EP 96921489 A 19960607

Priority

• US 9609942 W 19960607
• US 47290995 A 19950607

Abstract (en)

[origin: WO9641052A1] A method and apparatus for producing pulp (95) from fibrous plant materials (10). The method comprises the step of pulping (100) the fibrous material with a cooking solvent of a lower aliphatic alcohol and an additive mixture comprising at least one additive selective from the group consisting of sulfite salts, bisulfite salts and caustic.

IPC 1-7

D21C 3/20

IPC 8 full level

D21C 3/20 (2006.01); D21C 3/22 (2006.01)

CPC (source: EP)

D21C 3/20 (2013.01); D21C 3/222 (2013.01)

Citation (search report)

• [XY] GB 436090 A 19351004 - BRITISH CELANESE, et al
• See references of WO 9641052A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9641052 A1 19961219; AU 6270596 A 19961230; BR 9609008 A 19991214; CA 2221619 A1 19961219; EP 0830475 A1 19980325; EP 0830475 A4 19980826; JP H11507416 A 19990629; NO 975672 D0 19971205; NO 975672 L 19980204

DOCDB simple family (application)

US 9609942 W 19960607; AU 6270596 A 19960607; BR 9609008 A 19960607; CA 2221619 A 19960607; EP 96921489 A 19960607; JP 50210297 A 19960607; NO 975672 A 19971205