Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With chemical or physical modification of liberated fiber
Patent
1997-11-07
1999-07-27
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With chemical or physical modification of liberated fiber
162100, 162146, 1621576, 1621811, 1621812, 1621813, 1621814, 1621815, 162182, 162183, D21H 1120
Patent
active
059284706
ABSTRACT:
Metal oxides or metal hydroxides, such as titanium dioxide, are incorporated into papermaking fibers by absorbing an organometallic compound into the fiber walls while the fibers are dry or slurried with a non-aqueous solvent and thereafter contacting the ester-containing fibers with water to precipitate the metal oxides or metal hydroxides. The resulting modified fibers can provide greater opacity and other improved properties to papers made from such fibers.
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patent: 5223090 (1993-06-01), Klungness et al.
patent: 5275699 (1994-01-01), Allan et al.
patent: 5453479 (1995-09-01), Borman et al.
Chin Peter
Croft Gregory E.
Kimberly--Clark Worldwide, Inc.
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