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D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
D21C9/10—Bleaching ; Apparatus therefor
D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
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Life Sciences & Earth Sciences
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Engineering & Computer Science
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Wood Science & Technology
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CH344896D1955-05-071956-04-13Verfahren zum Bleichen von zellulosehaltigen Materialien
CH344896A
(de)