Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2007-12-04
2007-12-04
Halpern, Mark (Department: 1731)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S158000, C162S164100, C162S168300, C162S123000, C162S132000, C428S153000
Reexamination Certificate
active
10717276
ABSTRACT:
The present invention relates to a process for the production of a cellulosic product which comprises (i) providing an aqueous cellulosic suspension; (ii) adding to the suspension a clay having 3R2stacking; and (iii) dewatering the obtained suspension. The invention also relates to a process for the production of a cellulosic product which comprises (i) providing an aqueous cellulosic suspension; (ii) adding to the suspension a cationic clay; (iii) adding to the suspension one or more drainage and retention aids comprising at least one cationic polymer; and (iv) dewatering the obtained suspension. The invention further relates to a cellulosic product comprising clay having 3R2stacking.
REFERENCES:
patent: 4070236 (1978-01-01), Carrard et al.
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4753710 (1988-06-01), Langley et al.
patent: 4913775 (1990-04-01), Langley et al.
patent: 4927465 (1990-05-01), Hyder et al.
patent: 4927498 (1990-05-01), Rushmere
patent: 4954220 (1990-09-01), Rushmere
patent: 4961825 (1990-10-01), Andersson et al.
patent: 4980025 (1990-12-01), Andersson et al.
patent: 5015334 (1991-05-01), Derrick
patent: 5037508 (1991-08-01), Hyder et al.
patent: 5071512 (1991-12-01), Bixler et al.
patent: 5098520 (1992-03-01), Begala
patent: 5127994 (1992-07-01), Johansson
patent: 5176891 (1993-01-01), Rushmere
patent: 5185062 (1993-02-01), Begala
patent: 5368833 (1994-11-01), Johansson et al.
patent: 5378367 (1995-01-01), O'Neill et al.
patent: 5399537 (1995-03-01), Bhattacharyya et al.
patent: 5447604 (1995-09-01), Johansson et al.
patent: 5470435 (1995-11-01), Rushmere et al.
patent: 5534057 (1996-07-01), Harrison et al.
patent: 5543014 (1996-08-01), Rushmere et al.
patent: 5571379 (1996-11-01), Derrick
patent: 5571494 (1996-11-01), Saastamoinen
patent: 5573674 (1996-11-01), Lind et al.
patent: 5584966 (1996-12-01), Moffett
patent: 5603805 (1997-02-01), Andersson et al.
patent: 5607552 (1997-03-01), Andersson et al.
patent: 5688482 (1997-11-01), Saastamoinen
patent: 5707493 (1998-01-01), Saastamoinen
patent: 5755930 (1998-05-01), Satterfield et al.
patent: 5858174 (1999-01-01), Persson et al.
patent: 6113741 (2000-09-01), Kettunen et al.
patent: 6468488 (2002-10-01), Stamires et al.
patent: 6593265 (2003-07-01), Stamires et al.
patent: 2002/0110520 (2002-08-01), Stamires et al.
patent: 2002/0124979 (2002-09-01), Ovenden et al.
patent: 2005/0257909 (2005-11-01), Lindgren et al.
patent: 1 375 161 (1974-11-01), None
patent: 2 297 334 (1996-07-01), None
patent: 09-095900 (1997-04-01), None
patent: WO 86/05826 (1986-10-01), None
patent: WO 89/03863 (1989-05-01), None
patent: WO 89/06294 (1989-07-01), None
patent: WO 95/21295 (1995-08-01), None
patent: WO 95/21296 (1995-08-01), None
patent: WO 97/33040 (1997-09-01), None
patent: WO 99/41195 (1999-08-01), None
patent: WO 99/41196 (1999-08-01), None
patent: WO 99/41197 (1999-08-01), None
patent: WO 99/41198 (1999-08-01), None
patent: WO 99/55962 (1999-11-01), None
patent: WO 99/55962 (1999-11-01), None
patent: WO 99/55964 (1999-11-01), None
patent: WO 99/55965 (1999-11-01), None
patent: WO 99/67310 (1999-12-01), None
patent: WO 00/44671 (2000-08-01), None
patent: WO 00/44672 (2000-08-01), None
patent: WO 00/49227 (2000-08-01), None
patent: WO 01/12319 (2001-02-01), None
patent: WO 01/12542 (2001-02-01), None
patent: WO 01/12543 (2001-02-01), None
patent: WO 01/12545 (2001-02-01), None
patent: WO 01/12550 (2001-02-01), None
patent: WO 01/12570 (2001-02-01), None
patent: WO 01/40577 (2001-06-01), None
patent: WO 02/12626 (2002-02-01), None
International Search Report for International Application No. PCT/SE 03/01727 dated Mar. 4, 2004.
Iler et al., “Degree of Hydration of Particles of Colloidal Silica in Aqueous Solution,” J. Phys. Chem., vol. 60, (1956), pp. 955-957.
Huges, Sr., D. A., “A method for determining the pitch adsorption characteristics of mineral powders,” Tappi, vol. 60, No. 7 (Jul. 1977), pp. 144-146.
English language translation of Japanese Laid-Open No. 1985-94687; laid-open date May 27, 1985.
Derwent abstract 004336279 abstracting JP 60094687 A, 1985.
Sears, Jr., G., “Determination of Specific Surface Area of Colloidal Silica by Titration with Sodium Hydroxide,” Analytical Chem., vol. 28, No. 12 (1956), pp. 1981-1983.
Patent Abstracts of Japan abstracting JP 09-095900 (2006).
Rousselot, I. et al., “Insights on the Structural Chemistry of Hydrocalumite and Hydrotalcite-like Materials: Investigation of the Series Ca2M3+(OH)6C1-2H2O (M3+: Al3+, Ga3+, Fe3+, and Sc3+) by X-Ray Powder Diffraction,” Journal of Solid State Chemistry, vol. 167, Issue 1 (2002) pp. 137-144.
Hongjie, Z. et al., “Retention and filtration aid technology of microparticles,” Journal of Tianjing Paper Making, No. 1, 2002 (marked as D2).
English language translation of Hongjie, Z. et al., “Retention and filtration aid technology of microparticles,” Journal of Tianjing Paper Making No. 1, 2002 (marked as D2) 7 pages.
Qinglin, X. et al., “Several Familiar Compound Retention aid systems in Paper industry,” Hellongjiang Paper Making, No. 4, 2000 (marked as D3).
Bookin, A.S. et al., “Polytype Diversity of the Hydrotalcite-Like Minerals I. Possible Polytypes and their Diffraction Features,” Clays and Clay Minerals, vol. 41, No. 5 (1993) pp. 551-557.
Nilsson Jerker
Tokarz Marek
AKZO Nobel N.V.
Burke Michelle J.
Halpern Mark
Morriss Robert C.
Vickrey David H.
LandOfFree
Cellulosic product and process for its production does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cellulosic product and process for its production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cellulosic product and process for its production will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3849795