Invention Grant
US6153003A Process for preparing a homogeneous cellulose solution using
N-methylmorpholine-N-oxide
有权
使用N-甲基吗啉-N-氧化物制备均匀的纤维素溶液的方法
- Patent Title: Process for preparing a homogeneous cellulose solution using N-methylmorpholine-N-oxide
- Patent Title (中): 使用N-甲基吗啉-N-氧化物制备均匀的纤维素溶液的方法
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Application No.: US147369Application Date: 1999-02-10
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Publication No.: US6153003APublication Date: 2000-11-28
- Inventor: Wha Seop Lee , Byoung Chul Kim , Seong Mu Jo , Jong Su Park , Seong Joo Lee , Young Geun Park , Seung Lak Lee , Young Se Oh
- Applicant: Wha Seop Lee , Byoung Chul Kim , Seong Mu Jo , Jong Su Park , Seong Joo Lee , Young Geun Park , Seung Lak Lee , Young Se Oh
- Applicant Address: KRX Seoul KRX Kyungsangnam-do
- Assignee: Korea Institute of Science and Technology,Hanil Synthetic Fiber Co., Ltd.
- Current Assignee: Korea Institute of Science and Technology,Hanil Synthetic Fiber Co., Ltd.
- Current Assignee Address: KRX Seoul KRX Kyungsangnam-do
- Priority: KRX96-20567 19960610
- Main IPC: D01F2/02
- IPC: D01F2/02 ; C08B1/00 ; D01D1/02 ; D01F2/00 ; C08L1/02 ; C09D101/02
Abstract:
A simple method of preparing a homogeneous cellulose solution is disclosed, which comprises the steps of (a) preparing fibrillar cellulose powder; (b) injecting a molten liquid tertiary amine oxide solvent into a twin screw extruder; (c) feeding the cellulose powder of step (a) into a section of the twin screw extruder where the molten liquid tertiary amine oxide solvent fed in step (b) produces a well swollen paste with the cellulose powder fed in step (c); (d) dissolving the well swollen cellulose paste in the following melting sections in the twin screw extruder; and (e) stabilizing the solution obtained in step (d) in a storage tank.
Public/Granted literature
- US5365744A Air conditioning and refrigeration systems utilizing a cryogen Public/Granted day:1994-11-22
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