Paper making and fiber liberation – Processes and products – With coating after drying
Reexamination Certificate
2011-08-16
2011-08-16
Hug, Eric (Department: 1741)
Paper making and fiber liberation
Processes and products
With coating after drying
C162S158000, C162S164600, C162S168100, C162S168200, C162S175000, C106S287200, C106S287230, C106S287240, C427S391000, C427S395000, C524S077000, C524S081000, C524S112000, C524S500000, C524S800000
Reexamination Certificate
active
07998311
ABSTRACT:
Size press compositions and methods for producing sized paper products, including liner board, are disclosed. The size press compositions contain at least one non-reactive cationic surface sizing agent, at least one reactive sizing agent, at least one promoter resin, at least one binder, and water. The at least one non-reactive cationic surface sizing agent may be a polymer in the form of a dispersion, an emulsion or a latex with a positive zeta potential below about pH 6. The at least one reactive sizing agent may be a dispersion, an emulsion or a latex including an alkyl ketene dimer or an alkyl succinic anhydride. The at least one promoter resin may be a polyaminoamide-epichlorohydrin resin or poly (dimethyldiallylammonium chloride).
REFERENCES:
patent: 3499824 (1970-03-01), Kulick et al.
patent: 4278794 (1981-07-01), Wegleitner et al.
patent: 4317756 (1982-03-01), Dumas
patent: 4478682 (1984-10-01), Bankert et al.
patent: 4784727 (1988-11-01), Schroer et al.
patent: 5169886 (1992-12-01), Bung et al.
patent: 5456800 (1995-10-01), Tansley et al.
patent: 5470742 (1995-11-01), Bull et al.
patent: 6162328 (2000-12-01), Cenisio et al.
patent: 6207258 (2001-03-01), Varnell
patent: 6554961 (2003-04-01), Riehle et al.
patent: 7270727 (2007-09-01), Varnell
patent: 2003/0127204 (2003-07-01), Varnell
patent: 2004/0016528 (2004-01-01), Varnell
patent: 2008/0163993 (2008-07-01), Varnell
patent: 0 580 405 (1993-07-01), None
patent: 99/16973 (1999-04-01), None
patent: 03/022898 (2003-03-01), None
patent: 2008/086029 (2008-07-01), None
Scott, William E.,Principles of Wet End Chemistry, Chapter 14, pp. 99-109, 1996, Tappi Press, Atlanta, ISBN 089852-286-2.
Biermann, Christopher J.,The Handbook of Pulping and Papermaking, pp. 171-174, 1996, Academic Press, San Diego, ISBN 0-12-097362-6.
Scott, William E. and Abbott, James C.,Properties of Paper: An Introduction Ed., pp. 123-131, 1995, Tappi Press, Atlanta, ISBN 0-89852-062-2.
Cobb Test, Gurley Precision Instruments, 3 pages, www.gpi-test.com/cobb.htm.
Chin Peter
Fobare Rossi Joanne Mary
Hercules Incorporated
Hug Eric
Rogowski Patricia Smink
LandOfFree
Enhanced surface sizing of paper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Enhanced surface sizing of paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced surface sizing of paper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2736081