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Machine translation
1. (WO1980000159) PROCESS FOR ATTACKING A CELLULOSIC PLANT MATERIAL BY MEANS OF AMINO ORGANIC COMPOUNDS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000159    International Application No.:    PCT/DE1979/000065
Publication Date: 07.02.1980 International Filing Date: 27.06.1979
IPC:
D21C 3/00 (2006.01)
Applicants:
Inventors:
Priority Data:
2828740 30.06.1978 DE
Title (EN) PROCESS FOR ATTACKING A CELLULOSIC PLANT MATERIAL BY MEANS OF AMINO ORGANIC COMPOUNDS
(FR) PROCEDE POUR ATTAQUER UNE MATIERE VEGETALE CELLULOSIQUE AU MOYEN DE COMPOSES ORGANIQUES AMINES
Abstract: front page image
(EN)The process comprises the attacking of a cellulosic plant material, by separation of binding substances, such as lignin, by using amino organic compounds. In most of the known processes which use aqueous solutions or dispersions of the attacking agent, the materials to be separated form with the attacking agent reaction products, in big quantities; too much attacking agent is then used and the binding substances may hardly be used subsequently. Further, excess of waste waters occurs. Here is proposed an attack by extraction, without any addition of water, by means of aromatic compounds, substantially insoluble in water, amino cyclo-alkylated compounds and amino acylated compounds, wherein the reactions of the attacking agent with the binding substances may be suppressed by means of stabilizers. The process is used for the preparation of cellulose, wood pulp and other cellulosic products. In particular, pulps of good solidity and readily bleached may be prepared.
(FR)Le procede consiste a attaquer une matiere vegetale cellulosique, par separation de substances liantes, comme la lignine, en utilisant des composes organiques amines. Dans les procedes connus, qui pour la plupart utilisent des solutions aqueuses ou des dispersions de l"agent d"attaque, les substances a separer forment avec l"agent d"attaque des produits de reactions, en quantite importante; l"on consomme alors trop d"agent d"attaque et les substances liantes ne peuvent qu"a peine etre employees ulterieurement. De plus, il se forme une surcharge d"eaux usees. Selon l"invention, on propose une attaque par extraction, sans addition d"eau, au moyen de composes aromatiques, essentiellement insolubles dans l"eau, de composes amines cyclo-alcoyles et de composes amines acyles, au cours de laquelle des reactions de l"agent d"attaque avec les substances liantes peuvent etre en outre supprimees au moyen de stabilisateurs. Le procede sert a la preparation de cellulose, de pate de bois et d"autres produits cellulosiques. On peut, en particulier, preparer des pates a papier de bonne solidite que l"on peut facilement blanchir.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)