Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-05-08
2007-05-08
Woodward, Ana (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S096000, C524S503000
Reexamination Certificate
active
10481105
ABSTRACT:
This invention relates to a method of preparing cellulose solution which is homogeneous at relatively low temperature, in which a small amount of cellulose powder or polyvinylalcohol is dissolved in the liquid-state, concentrated N-methylmorpholine-N-oxide (hereinafter, referred to as ‘NMMO’) so as to lower the solidifying temperature of NMMO, and then, the resulting solution and cellulose powder are fed into an extruder so as to be mixed, swollen and melted in the extruder.
REFERENCES:
patent: 3447935 (1969-06-01), Marley
patent: 4142913 (1979-03-01), McCorsley, III et al.
patent: 4144080 (1979-03-01), McCorsley, III
patent: 4196282 (1980-04-01), Franks et al.
patent: 4221574 (1980-09-01), Loggins, Jr. et al.
patent: 4246221 (1981-01-01), McCorsley, III
patent: 4255300 (1981-03-01), Franks et al.
patent: 4416698 (1983-11-01), McCorsley, III
patent: 4880469 (1989-11-01), Chanzy et al.
patent: 5626810 (1997-05-01), Zikeli et al.
patent: 5725821 (1998-03-01), Gannon et al.
patent: 5747125 (1998-05-01), Markulin
patent: 5826798 (1998-10-01), Schindler et al.
patent: 5951933 (1999-09-01), Stall et al.
patent: 6153003 (2000-11-01), Lee et al.
patent: 6241927 (2001-06-01), Mulleder et al.
patent: 6677447 (2004-01-01), Lee et al.
patent: 6812270 (2004-11-01), Lee et al.
patent: 6902804 (2005-06-01), Kwon et al.
patent: 2003/0225206 (2003-12-01), Lee et al.
patent: 2005/0019564 (2005-01-01), Kwon et al.
patent: 2005/0066646 (2005-03-01), Kwon et al.
patent: 2005/0154093 (2005-07-01), Kwon et al.
patent: 2005/0160939 (2005-07-01), Kwon et al.
patent: 2 374 326 (2002-10-01), None
patent: 2 389 111 (2003-12-01), None
patent: 2000-041342 (2000-07-01), None
patent: 2001-038732 (2001-05-01), None
patent: WO 94/06530 (1994-03-01), None
patent: WO 94/06530 (1994-03-01), None
patent: WO 97/47790 (1997-12-01), None
Yun-Jeong Seong et al.; “The Effects of PVA on the Properties of Cellulose/PVA Solution Blends in NMMO Hydrate”; Polymeric Materials: Science & Engineering; 2002; 86, pp. 167-168.
Choi Jae-Shik
Choi Soo-Myung
Han Seok-Jong
Kim Myung-Woo
Kim Sung-Ryong
Hyosung Corporation
Woodward Ana
LandOfFree
Solution containing cellulose dissolved in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solution containing cellulose dissolved in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solution containing cellulose dissolved in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3748626