Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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
D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds
Landscapes
Life Sciences & Earth Sciences
(AREA)
Engineering & Computer Science
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Wood Science & Technology
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Chemical And Physical Treatments For Wood And The Like
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Coloring
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Description
EERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.
Claims (1)
Patent-Anspruch:
Verfahren zum Entharzen und Bleichen von Holzschliff, Strohstoff u. dgl., dadurch
gekennzeichnet, daß die genannten Rohstoffe auf kaltem Wege mit fein verteiltem Talkum behandelt werden.
Liquido de tratamento para uso em um furo que penetra em uma formacao de sub-solo e processo de tratamento de materiais granulares no ou em torno de um poco