Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Reexamination Certificate
2007-09-11
2007-09-11
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
C162S172000, C162S179000, C516S038000, C516S043000, C516S046000
Reexamination Certificate
active
10388548
ABSTRACT:
Waxes prepared from hydrogenated plant oils, such as castor, palm, and soybean, are used to prepare water based emulsions. The inventive waxes, obtained from naturally derived, renewable resources, were emulsified under anionic, cationic and nonionic conditions, producing emulsions having a solids content up to about 45% solids. When used to coat fibrous cellulosic articles, such as paperboard, the emulsions' performance was similar to emulsions containing petroleum-derived waxes. The inventive waxes have a low iodine value (between 2-5), and melting points between approximately 120-200 degrees F. (Mettler Drop Point). These waxes comprise a triglyceride whose fatty acids are predominantly stearic acid or ricinoleic acid. The inventive waxes are used as an alternative to petroleum-derived, or expensive naturally-occurring waxes in the manufacture of emulsions used in coatings, polishes, adhesives, paper products, paperboard, in the removal of ink from fibrous cellulosic products and other manufacturing operations.
REFERENCES:
patent: 5023108 (1991-06-01), Bagaria et al.
patent: 5251398 (1993-10-01), Balassa
patent: 5403392 (1995-04-01), Craig
patent: 6039960 (2000-03-01), Chung et al.
patent: 6053439 (2000-04-01), Locke et al.
patent: 6255375 (2001-07-01), Michelman
patent: 6273993 (2001-08-01), Michelman
patent: 6277310 (2001-08-01), Sleeter
patent: 6416620 (2002-07-01), Narancic et al.
patent: 6488941 (2002-12-01), Burnier et al.
patent: 6488946 (2002-12-01), Milius et al.
patent: 915759 (1963-01-01), None
patent: WO 87/04070 (1987-07-01), None
Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley & Sons, Inc. 1998, topic: Waxes, section: Vegetable Waxes [online][retreived Mar. 14, 2006] Retreived from <www.mrw.interscience.wiley.com/kirk/articles/waxecott.a01/sect3.html>.
Campbell & Co product data sheet, Campbell and Co., copyright 1998-2002 [online][retreived Mar. 14, 2006] Retrieved from the Internet:<URL:www.campbell-uv.com/castor.html>.
Borsinger Gregory G.
Hassan Abbas
Adams Thomas L.
Appelbaum Benjamin
Cordray Dennis R.
Hug Eric
Marcus Oil and Chemical
LandOfFree
Wax emulsion coating applications does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wax emulsion coating applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wax emulsion coating applications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3721461