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Class Information
Number: 162/74
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > Treatment with particular chemical > Organic > Chlorine containing
Description: Processes in which a chlorine containing organic compound is used.

Patents under this class:

Patent Number Title Of Patent Date Issued
8657996 Methods of using combinations of a lipase and an oxidant for pitch control in paper making processes and products thereof Feb. 25, 2014
7976676 Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base Jul. 12, 2011
7976677 Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base Jul. 12, 2011
7541175 Alkaline extraction stages comprising xylanase Jun. 2, 2009
7384504 Light-stable and process-stable lignocellulosic materials and their production Jun. 10, 2008
7320741 Method of xylanase treatment in a chlorine dioxide bleaching sequence Jan. 22, 2008
6777103 Fiber cement composite material using biocide treated durable cellulose fibers Aug. 17, 2004
6773546 Black liquor removed from pulp Aug. 10, 2004
6319356 Process for controlling odor in paper and paperboard using a halohydantoin Nov. 20, 2001
6075076 Composite wood products prepared from solvent extracted wood particulates Jun. 13, 2000
5914004 Method of producing pulp for paper manufacture Jun. 22, 1999
5914003 Cellulose oxidation Jun. 22, 1999
5873909 Method and compositions for treating fibrous cellulosic materials Feb. 23, 1999
5853428 Metal ligand containing bleaching compositions Dec. 29, 1998
5725601 Process for producing water-absorbent cross-linked, carboxyalkylated cellulose-containing material Mar. 10, 1998
5698667 Pretreatment of wood particulates for removal of wood extractives Dec. 16, 1997
5630906 Process for the delignifcation and bleaching of a lignocellulose material May. 20, 1997
5554258 Flotation process for mechanical pulp using a surface active agent Sep. 10, 1996
5482514 Process for enhancing the whiteness, brightness and chormaticity of paper making fibres Jan. 9, 1996
5145558 Composition for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive Sep. 8, 1992
4801353 Use of chlorous acid for bleaching wood pulp Jan. 31, 1989
4720383 Softening and conditioning fibers with imidazolinium compounds Jan. 19, 1988
3951731 Process for aerobic decomposition and solvent treatment of waste material Apr. 20, 1976

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