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Application filed by Union Union Co AsfiledCriticalUnion Union Co As
Publication of FI266274ApublicationCriticalpatent/FI266274A/fi
Publication of FI55876BpublicationCriticalpatent/FI55876B/fi
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Publication of FI55876CpublicationCriticalpatent/FI55876C/fi
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
FI2662/74A1973-09-131974-09-11Foerfarande foer framstaellning av cellulosamassa
FI55876C
(fi)