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Publication of FR570022ApublicationCriticalpatent/FR570022A/fr
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
FR570022D1923-08-041923-08-22Traitement perfectionné du bois ou de substances analogues en vue d'obtenir de nouveaux dérivés de la lignone
ExpiredFR570022A
(fr)