Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2006-10-30
2009-10-20
Halpern, Mark (Department: 1791)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S158000, C162S181700, C162S179000, C162S172000
Reexamination Certificate
active
07604715
ABSTRACT:
The invention relates to a papermaking process in which the static potential of the fibers/paper product can be controlled and reduced while enhancing the softness of the produced paper product.The papermaking process comprises adding to a suspension of cellulosic fibers:(i) a smectite clay(ii) at least one anionic compound selected from anionic microparticles and anionic surfactants(iii) at least one polymer which is cationic, non-ionic or amphoteric(iv) at least one non-ionic surfactant; and/or an oil, wax or fat.
REFERENCES:
patent: 2630410 (1953-03-01), Clapsadle et al.
patent: 4753710 (1988-06-01), Langley et al.
patent: 5368833 (1994-11-01), Johansson et al.
patent: 5698076 (1997-12-01), Phan et al.
patent: 5779785 (1998-07-01), Payton et al.
patent: 6284099 (2001-09-01), Peutherer et al.
patent: 2002/0096289 (2002-07-01), Frolich et al.
patent: 2004/0250972 (2004-12-01), Carr
patent: 2006/0099128 (2006-05-01), Andrews et al.
patent: 0 235 893 (1987-09-01), None
patent: 0 235 893 (1987-09-01), None
patent: 0 491 879 (1992-07-01), None
patent: 0 782 970 (1997-07-01), None
patent: 0 882 156 (1998-12-01), None
patent: 1 586 705 (2005-10-01), None
patent: WO 91/07350 (1991-05-01), None
patent: WO 97/31152 (1997-08-01), None
patent: WO 98/07927 (1998-02-01), None
patent: WO 00/75426 (2000-12-01), None
patent: WO 02/12626 (2002-02-01), None
patent: WO 04/000729 (2003-12-01), None
European Search Report for Application No. EP 05 11 0868 dated Jan. 30, 2006.
Iler, Ralph K., “The Chemistry of Silica”, John Wiley & Sons (1979) pp. 407-409.
“Pulp; Preparation of Laboratory Sheets for Physical Testing,” Scandinavian Pulp, Paper and Board Testing Committee, SCAN-C 26:76/SCAN-M 5:76 (Dec. 1975) pp. 1-4.
“Fluff; Knot content,” Scandinavian Pulp, Paper and Board Testing Committee, SCAN-CM 37:85 (Aug. 1985) pp. 1-3.
Liesén Jonas
Malmborg-Nyström Kerstin
Akzo Nobel N.V.
Halpern Mark
Morriss Robert C.
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