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HYDROPHOBING AGENT FOR CELLULOSIC FIBERS, METHOD OF PREPARING THE AGENT, AND USE OF THE AGENT FOR STOCK HYDROPHOBATION

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  • Nhan đề:
    HYDROPHOBING AGENT FOR CELLULOSIC FIBERS, METHOD OF PREPARING THE AGENT, AND USE OF THE AGENT FOR STOCK HYDROPHOBATION
  • Tác giả: ANDERSSON, KJELL, RUNE ; LYRMALM, NILS, EBBE
  • Chủ đề: IMPREGNATING OR COATING OF PAPER ; PAPER NOT OTHERWISE PROVIDED FOR ; PAPER-MAKING ; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D ; PRODUCTION OF CELLULOSE ; PULP COMPOSITIONS ; TEXTILES ; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
  • Mô tả: A hydrophobing agent consists of resin acid and/or fatty acid emulsified/dispersed in an aqueous phase of water, a polyaluminium salt dissolved in the water, and preferably also a cationic organic compound. According to the invention, the hydrophobing agent is prepared in that the resin acid and/or fatty acid, optionally in mixture with another hydrophobic melting point-reducing agent, is finely dispersed in the aqueous phase in the presence of said polyaluminium salt and preferably also the cationic organic compound. The invention also comprises the use of the hydrophobing agent for stock hydrophobation of cellulosic fibers in papermaking technology. Un agent à pouvoir hydrophobe est constitué, selon l'invention, d'un acide de résine et/ou d'un acide gras émulsifié/dispersé en phase aqueuse, d'un sel de polyaluminium dissous dans l'eau, et de préférence d'un composé organique cationique. Pour la préparation de cet agent, l'acide de résine et/ou l'acide gras, éventuellement en mélange avec un autre agent hydrophobe réducteur du point de fusion, est finement dispersé en phase aqueuse en présence dudit sel de polyaluminium et de préférence également du composé organique cationique. L'invention comporte également l'emploi de l'agent à pouvoir hydrophobe pour rendre hydrophobe la pâte des fibres cellulosiques dans la technologie papetière.
  • Năm xuất bản: 1986
  • Ngôn ngữ: English;Swedish
  • Nguồn: esp@cenet
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