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    • 7. 发明授权
    • Process for the production of cellulose moulded bodies
    • 生产纤维素成型体的方法
    • US5766530A
    • 1998-06-16
    • US471842
    • 1995-06-06
    • Wolfram KaltJohann MannerArnold NigschHeinrich FirgoChristian HagerWolfgang Helmut Schkorwaga
    • Wolfram KaltJohann MannerArnold NigschHeinrich FirgoChristian HagerWolfgang Helmut Schkorwaga
    • D01D4/02D01F2/00B29C47/00
    • D01F2/00
    • The invention is concerned with a process for the production of cellulose moulded bodies wherein a suspension of cellulose in an aqueous solution of a tertiary amine-oxide is transformed into a mouldable solution, said solution being extruded by means of a forming tool and conducted into a precipitation bath. The process is characterized in that at least part of the materials in devices and pipes for the transportation and processing of the solution, which material is in contact with the mouldable solution contains at a minimum of 90% up to a depth of at least 0,5 .mu.m, preferably more than 1 .mu.m, at least one element of the group consisting of titanium, zirconium, chromium and nickel in elementary form and/or in the form of compounds provided that the remaining of the material does not contain any of the elements of the group consisting of copper, molybdenum, tungsten or cobalt. By means of the use of certain elements and compounds according to the invention, it is possible to control the occurrence and the extent of exothermal degradation reactions in the cellulose solution.
    • 本发明涉及生产纤维素模塑体的方法,其中将纤维素在叔胺氧化物的水溶液中的悬浮液转化成可模制的溶液,所述溶液通过成形工具挤出并进入 沉淀浴 该方法的特征在于,用于运输和处理溶液的装置和管道中的至少一部分材料,该材料与可成型溶液接触,包含至少90%,至少为0的深度, 5微米,优选大于1微米,元素形式和/或化合物形式的钛,锆,铬和镍中的至少一种元素,条件是剩余的材料不含任何 由铜,钼,钨或钴组成的组元素。 通过使用根据本发明的某些元素和化合物,可以控制纤维素溶液中放热降解反应的发生和程度。