会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 26. 发明申请
    • NEW REGENERATED CELLULOSE FIBER AND PROCESS OF PREPARING THE SAME
    • 新的再生纤维素纤维及其制备方法
    • WO00012790A1
    • 2000-03-09
    • PCT/KR1999/000461
    • 1999-08-18
    • D01F2/24C08B5/00C08B16/00D01F2/02
    • C08B16/00C08B5/00D01F2/02
    • The process of preparing the regenerated cellulose fiber according to the present invention comprises providing Na-cellulose by treating natural cellulose with an NaOH aqueous solution, aging the Na-cellulose by exposing to air, removing an excess of NaOH from the aged cellulose by repeating washing and filtration, preparing a reacted cellulose by reacting the aged cellulose with carbon dioxide in a pretreating solution in a high pressure reactor, preparing a cellulose carbonate derivative from the reacted cellulose by repeating washing and filtration, preparing a spinning solution by dissolving the cellulose carbonate derivative in a mixed solvent of NaOH and ZnO aqueous solution, and wet-spinning the cellulose spinning solution in a bath. The process of preparing a regenerated cellulose fiber in accordance with the present invention prepares a cellulose carbonate derivative using carbon dioxide instead of a cellulose xanthate derivative through reaction of Na-cellulose with carbon disulfide in the viscose process, therefore not harmful to human body. Also, this process may use all the equipments and apparatus of the conventional viscose process.
    • 根据本发明的再生纤维素纤维的制备方法包括通过用NaOH水溶液处理天然纤维素来提供Na-纤维素,通过暴露于空气来老化Na-纤维素,通过重复洗涤从老化的纤维素中除去过量的NaOH 过滤,通过在高压反应器中的预处理溶液中使老化纤维素与二氧化碳反应制备反应的纤维素,通过重复洗涤和过滤从反应的纤维素制备纤维素碳酸酯衍生物,通过将碳酸纤维素衍生物 在NaOH和ZnO水溶液的混合溶剂中,并将纤维素纺丝溶液在浴中湿纺。 根据本发明的制备再生纤维素纤维的方法使用二氧化碳代替纤维素黄原酸酯衍生物,通过在粘胶工艺中将Na-纤维素与二硫化碳反应制备,因此对人体无害。 此外,该方法可以使用常规粘胶工艺的所有设备和装置。