The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2006
Filed:
Oct. 24, 2003
Ik-hyeon Kwon, Seoul, KR;
Soo-myung Choi, Kyonggi-do, KR;
Young-soo Wang, Busan, KR;
Sung-ryong Kim, Daejon, KR;
Jae-shik Choi, Seoul, KR;
Tae-jung Lee, Kyonggi-do, KR;
Seok-jong Han, Kyunggi-do, KR;
Myung-woo Kim, Gyeongnam, KR;
Ik-Hyeon Kwon, Seoul, KR;
Soo-Myung Choi, Kyonggi-do, KR;
Young-Soo Wang, Busan, KR;
Sung-Ryong Kim, Daejon, KR;
Jae-Shik Choi, Seoul, KR;
Tae-Jung Lee, Kyonggi-do, KR;
Seok-Jong Han, Kyunggi-do, KR;
Myung-Woo Kim, Gyeongnam, KR;
Hyosung Corporation, Kyonggi-do, KR;
Abstract
The present invention relates to a method for making highly homogenized cellulose solution, wherein the cellulose solution is obtained by obtaining a solidified N-methylmorphorine-N-oxide (hereinafter, referred to as 'NMMO') hydrates which is solidified a liquid-state NMMO hydrates comprising 10 to 18% by weight water by using a simple screw-type feeder and by controlling the temperature, feeding the solidified NMMO into a twin-screw type extruder continuously, obtaining a cellulose solution which is fully swelled in a few minutes by dispersing and mixing with cellulose powder in the twin-screw type extruder, and extruding a highly homogenized cellulose solution by feeding the obtained cellulose solution into a melting zone of the extruder to melting the cellulose solution in a few minutes by minimum heat and shear force.