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BREV IND SOC GEN DE
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BREV IND SOC GEN DE
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Priority claimed from CH1452269Aexternal-prioritypatent/CH498244A/en
Application filed by BREV IND SOC GEN DEfiledCriticalBREV IND SOC GEN DE
Publication of ES383485A1publicationCriticalpatent/ES383485A1/en
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
D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment
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Paper
(AREA)
Polysaccharides And Polysaccharide Derivatives
(AREA)
Abstract
Process for the manufacture of cellulose pulp, characterized in that wood fragments are treated at a temperature above 100ºC in contact with a solution of hydroxide or of an alkali metal or alkaline earth or ammonium salt in a solvent composed of one or several substances whose boiling point at atmospheric pressure is higher than 100ºC in order to solubilize the lignin, and then the cellulose pulp is separated from the dissolved lignin. (Machine-translation by Google Translate, not legally binding)
ES383485A1969-09-261970-09-09Procedure for the manufacture of cellulose pasta. (Machine-translation by Google Translate, not legally binding)
ExpiredES383485A1
(en)
A procedure for the preparation of a humic fertilizer from the residual juices of annual vegetable pastes (Machine-translation by Google Translate, not legally binding)
A procedure for the manufacture of hemicelulosa of wood of conifers and of border trees, able to be blanked (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of halogenated derivatives of sulfuric esters of polyacarides. (Machine-translation by Google Translate, not legally binding)