| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
|---|
| 01/12/2005 | CN1563566A Method for paper making from cotton stalk and equipment |
| 01/12/2005 | CN1563565A Method for selective degrading lignin in paper pulp |
| 01/12/2005 | CN1563564A Method for producing chemical wood pulp |
| 01/12/2005 | CN1563563A Totally enclosed type method for pulping procedure in papermaking with zero discharged blac liquor |
| 01/12/2005 | CN1563562A Producing paper pulp by using method of biologic enzymolysis |
| 01/12/2005 | CN1184374C Production technology of pure natural antibacterial bamboo paste |
| 01/05/2005 | CN1560356A Method for decolor to second fibre by white rot bacteria |
| 01/05/2005 | CN1560355A Method of de-resin by biology |
| 01/05/2005 | CN1560337A Flax material viscose fibre pulp and preparation process of functional fibre thereof |
| 01/04/2005 | CA2265872C Method and apparatus for pulping with controlled heating to improve delignification and pulp strength |
| 12/30/2004 | US20040261960 Mixture of chips and process liquid is fed to inlet of digester system velssel; chips are impregnated and cooked; dissolved pulp is fed out of the digester system; liquid which is continually extracted is retained outside the digester system during a dwell time without any heating above 140 degrees |
| 12/29/2004 | EP1490548A1 Method for the modification of cellulose fibres |
| 12/23/2004 | US20040256070 Method for inhibiting calcium salt scale |
| 12/23/2004 | US20040256065 Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 12/22/2004 | EP1488038A1 Method for the feed of cellulose chips during the continuous cooking of cellulose |
| 12/22/2004 | EP1007571B1 A raw material based on sugar beet pulp for use in the preparation of pectin and related compounds, and a method for the preparation of the same |
| 12/18/2004 | WO2005001195A1 Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 12/18/2004 | CA2485520A1 Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 12/16/2004 | DE10323376A1 Verfahren zum Delignifizieren A method of delignification |
| 12/15/2004 | CN1554825A Method for biologically catalytic decomposing and pulping using fast growing poplar and soft weedtree |
| 12/14/2004 | CA2222664C Dissolved solids control in pulp production |
| 12/09/2004 | WO2004106624A1 Method for producing pulp and lignin |
| 12/09/2004 | US20040244925 Acid catalyst hydrolysis of wood chips; recyclization of catalyst |
| 12/08/2004 | EP1484375A1 Resin acid composition and use thereof |
| 12/08/2004 | CN2661301Y Kraft processing device by lignin removing by oxygen and bleaching |
| 12/08/2004 | CN1552993A Cooking catalyst for papermaking and pulping |
| 12/03/2004 | CA2452145A1 Method for producing pulp and lignin |
| 12/02/2004 | WO2004104293A1 Method for delignifying lignocellulose raw materials |
| 12/01/2004 | EP1481124A1 Process for producing furfural, formic acid and acetic acid from spent pulp-cooking liquor |
| 11/25/2004 | US20040231810 Process for producing pulp |
| 11/24/2004 | CN1548646A Composite nano paper pulp |
| 11/24/2004 | CN1177101C Chemical treatment and hot pulping process of wood pulp and dreg pulp with mechanical mill and stone mill |
| 11/18/2004 | US20040226670 Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester |
| 11/17/2004 | CN1546787A Pulping method using vegetation raw material and xylanase |
| 11/17/2004 | CN1546786A Biofermentation pulping technology |
| 11/16/2004 | US6818099 Raw material for printing paper, method to produce it and printing paper |
| 11/10/2004 | CN1544752A Clean pulping catalyst and process thereof |
| 11/09/2004 | US6814759 Stable zeolite/cellulose composite materials and method of preparation |
| 11/04/2004 | WO2004094624A1 Isolation and use of decay fungi |
| 11/03/2004 | CN1542217A Method for preparing paper pulp by pharmaceutically catalyzing plant fiber at normal temperature and pressure |
| 11/02/2004 | CA2150381C Viscose production process |
| 10/27/2004 | EP1470288A1 Continuous cooking of cellulose pulp with improved heat economy |
| 10/27/2004 | EP1470287A1 Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor |
| 10/27/2004 | CN1540092A 'Dongba' paper used by 'Naxi' mationality and preparation method |
| 10/27/2004 | CN1540091A Digesting assistant in use for making paper |
| 10/21/2004 | WO2004090225A1 Purification of alkaline washing liquid |
| 10/21/2004 | US20040206463 Method of making a modified unbleached pulp for lyocell products |
| 10/20/2004 | EP1468140A1 Polysulfide measurement methods using colorimetric techniques |
| 10/20/2004 | CN1539040A Method for prodcing improved pulp |
| 10/20/2004 | CN1538941A Method for inhibiting calcium salt scale |
| 10/20/2004 | CN1538940A Method for inhibiting calcium salt scale |
| 10/14/2004 | US20040200589 pulping a lignocellulosic material in caustic sulfide comprising polysulfide and anthraquinone to provide a first brownstock, treating this brownstock with oxygen to provide a second brownstock; and bleaching the second brownstock; hemicellulose content >17 weight percent; strength; efficiency |
| 10/14/2004 | US20040200587 A bleached, chemical pulp having a hemicellulose content >17 weight % (8% caustic solubility test (TAPPIT-235-CM-00)); sheets of high tensile strengths - significantly greater than that of conventional Kraft chemical pulp fibers; tissues; towels; chemithermomechanical pulp; energy efficient |
| 10/13/2004 | CN1170979C Salix mongolica imonium pulping and paper-making method |
| 10/12/2004 | CA2297980C Continuous cooking with cool impregnation and dom control |
| 10/07/2004 | WO2004085735A1 Methods for bleaching of cellulosic materials |
| 10/06/2004 | CN1534134A Chlorineless bleaching paper pulp producing process using pith removed corn stalk as raw material |
| 10/06/2004 | CN1170031C Process for producing pulp with a mixture of formic acid and acetic acid as cooking chemical |
| 10/06/2004 | CN1169693C Modified stalk material and its application |
| 09/29/2004 | CN1533459A Four stage alkaline peroxide mechanical pulping |
| 09/28/2004 | US6797113 Low specific gravity wood from thinning operations, for example, will produce a lower brownstock viscosity for a given kappa number target. a differential of 200-cp falling ball pulp viscosity has been detected from kraft cooks of low |
| 09/22/2004 | EP1458927A1 Pretreatment of chips with white liquor prior to a treatment with black liquor |
| 09/22/2004 | EP1458926A1 Method and arrangement for impregnating chips |
| 09/22/2004 | EP1161592B1 Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 09/21/2004 | CA2285714C Continuous digester with inverted top separator |
| 09/21/2004 | CA2116260C Method of inhibiting calcium oxalate scale deposition |
| 09/16/2004 | WO2004078312A1 Foam control agent |
| 09/16/2004 | US20040177937 pulping, without degrading the cellulose too much; having sulfites in the presence of an alkaline component, in particular sodium hydroxide or sodium carbonate |
| 09/16/2004 | CA2517973A1 Foam control agent |
| 09/15/2004 | CN1166836C Technology for preparing paper pulp from corn stalk |
| 09/08/2004 | EP1454667A1 Foam control agent |
| 09/08/2004 | EP1454014A2 Papermaking process using enzyme-treated sludge, and products |
| 09/08/2004 | EP1454009A1 Process for continuously cooking chemical cellulose pulp |
| 09/08/2004 | CN1527896A Process for producing pulp |
| 09/07/2004 | CA2404796C Low temperature gas phase continuous digester |
| 09/02/2004 | US20040171136 Apparatus comprising water impermeable layer for processing lignocellulosic materials; pulp and paper processing; biodegration and remediation |
| 09/02/2004 | US20040168960 Methods and systems for pretreatment and processing of biomass |
| 08/25/2004 | EP1109750B1 Process and product for the inhibition of scale in harsh systems |
| 08/18/2004 | CN1522324A Method for delignifying lignocellulosic raw materials |
| 08/18/2004 | CN1522317A Lyocell fibers |
| 08/12/2004 | US20040154761 Brightness; adding a sulfide chelate compound; digesting wood chips; pressurized oxygen delignification |
| 08/11/2004 | EP0937172B1 Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
| 08/11/2004 | CN1519424A Use of thinnings and other low specific gravity wood for lyocell pulps method |
| 08/11/2004 | CN1161212C Bamboo pulp denatured productive tehcnology |
| 08/10/2004 | US6773648 Meltblown process with mechanical attenuation |
| 08/05/2004 | WO2004044285A3 Highly refined fiber mass, process of their manufacture and products containing the fibers |
| 08/05/2004 | DE10297032T5 Verfahren zur Zellstoffherstellung A method for producing pulp |
| 08/04/2004 | EP1402092A4 Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 08/04/2004 | CN1517491A Thinning wood and other low sprecific wood used for leiser product |
| 08/04/2004 | CN1517490A Thinning wood and other low specific wood used for leiser pomace |
| 08/04/2004 | CN1517487A Method of using thinning wood and other low specific wood for leiser product |
| 08/04/2004 | CN1517486A Chinese alpine rush/bluish dogbane bast biological pulp making process under industrial condition |
| 08/03/2004 | US6770168 Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals |
| 07/28/2004 | EP1441050A1 Use of low specific gravity wood for lyocell products |
| 07/28/2004 | CN1159491C Pulping composition and process using aminoalkoxylsilanes |
| 07/22/2004 | WO2004061224A1 Paper pulp, method for the production thereof, and use of the paper pulp |
| 07/22/2004 | US20040140068 Feeding arrangement for feeding of chips to chip bins |
| 07/20/2004 | CA2174874C Pretreatment of chips before cooking |
| 07/14/2004 | EP1437428A1 Use of low specific gravity wood for lyocell products method |
| 07/13/2004 | CA2149434C Digester for continuous cooking of fibre material |