| Patents for C08B 9 - Preparation of cellulose xanthate or viscose (204) |
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| 02/28/2007 | CN1302012C Xanthating method used in viscous fiber production |
| 01/03/2007 | CN1293243C Bamboo-charcoal viscose fiber and method for making same |
| 05/17/2006 | CN1774450A Cross-linked polysaccharide composition |
| 05/25/2005 | CN1618816A Xanthating method used in viscous fiber production |
| 04/20/2005 | CN1607271A Bamboo-charcoal viscose fiber and method for making same |
| 11/18/2004 | WO2004067572A8 Method for the production of highly reactive pulp cellulose, and use thereof |
| 11/10/2004 | CN1544720A Three-leaves viscose, its making process and spinneret assembly thereof |
| 09/15/2004 | CN1528959A Far infrared viscose filament and preparing method thereof |
| 08/12/2004 | WO2004067572A1 Method for the production of highly reactive pulp cellulose, and use thereof |
| 07/08/2004 | US20040129394 including the step of applying an electron processing technology (EPT) step on an in-line basis to provide control of pulp viscosity or degree of polymerisation (DP) |
| 05/19/2004 | CN1498227A Pulp treatment method |
| 05/19/2004 | CN1497078A Rush yarm and its production technology and application |
| 02/25/2004 | EP1390411A1 Pulp treatment and process |
| 03/26/2003 | CN1103783C Method of producing a viscous solution, viscous solution and its use |
| 03/25/2003 | US6538130 Manufacture of viscose and of articles therefrom |
| 02/05/2003 | CN1100791C Method for viscose production |
| 09/26/2002 | WO2002074813A1 Pulp treatment and process |
| 09/18/2002 | EP0886653B1 Manufacture of viscose and of articles therefrom |
| 07/09/2002 | CA2225875C Method of manufacturing cellulose beads |
| 05/21/2002 | US6392033 Generating cellulose; incubate cellulose derivative with electrons, disperse electrons, remove caustic agent, xanthanate cellulose, dissolve in lye, recover cellulose |
| 03/27/2002 | EP1023326B1 Manufacture of viscose and of articles therefrom |
| 02/06/2002 | EP0873364B1 Method for producing cellulose derivatives |
| 01/10/2002 | DE10030806A1 Verwendung von Alkylpolyglucosiden als Filtrationshilfsmittel im Viskoseverfahren Use of alkylpolyglucosides as a filter aid in the viscose |
| 01/03/2002 | WO2002000732A1 Use of alkylpolyglucosides as filtering agents in the viscose method |
| 04/04/2001 | EP0963378B1 Method for viscose production |
| 11/07/2000 | US6143884 Manufacturing process of cellulose viscose with low viscosity |
| 08/02/2000 | EP1023326A1 Manufacture of viscose and of articles therefrom |
| 05/30/2000 | US6068689 Mercerizing an ionizing-radiated alpha-cellulose with alkali, followed by xanthating and dissolving the xanthated alpha-cellulose in an aqueous alkali solution; adding a nonionc and/or a cationic surfactant; byproduct inhibition; quality |
| 05/10/2000 | CN1252812A Method of producing a viscous solution |
| 04/04/2000 | US6045587 Method of reducing color and polymerization decay of cellulose viscose |
| 03/29/2000 | CN1248977A Method for viscose production |
| 02/02/2000 | EP0975675A1 Method of producing a viscose solution |
| 12/15/1999 | EP0963378A1 Method for viscose production |
| 10/26/1999 | US5972507 Method of manufacturing cellulose beads |
| 09/09/1999 | DE19809765A1 Twisted hydrated cellulose fibers useful for the pile of cleaning, decontamination or water treatment cloth |
| 04/01/1999 | WO1999015565A1 Manufacture of viscose and of articles therefrom |
| 02/11/1999 | DE19734239A1 Biodegradable twisted fibers of hydrated cellulose |
| 01/06/1999 | CN1041540C Manufacture of regenerated cellulosic fibre by zinc free viscose process |
| 12/30/1998 | EP0886653A1 Manufacture of viscose and of articles therefrom |
| 10/29/1998 | WO1998047924A1 Method of producing a viscose solution |
| 10/28/1998 | EP0873364A1 Method for producing cellulose derivatives |
| 10/08/1998 | DE19812954A1 Viscose fibre production from cellulose or a spinning solution |
| 09/03/1998 | WO1998038221A1 Method for viscose production |
| 07/01/1998 | EP0850979A2 Method of manufacturing cellulose beads. |
| 05/22/1998 | WO1998021246A1 Method for producing cellulose derivatives |
| 05/22/1998 | CA2241800A1 Process for producing cellulose derivatives |
| 05/14/1998 | DE19646213A1 Verfahren zur Herstellung von Cellulosederivaten Process for the preparation of cellulose derivatives |
| 05/06/1998 | CN1038250C Method for making grass fibre film for food packing |
| 04/02/1998 | DE19707387C1 Production of viscose using one source of alkali for alkalisation |
| 11/26/1997 | CN1165735A Method for prodn. of grass fibre adhesive film |
| 10/15/1997 | CN1036140C Vegetable fibre film product and preparation process |
| 09/18/1997 | WO1997033918A1 Manufacture of viscose and of articles therefrom |
| 09/03/1997 | CN1158275A Process for dissolving nodular solids in lqiuids and installation for carrying out process |
| 03/11/1997 | US5609676 Recycling of dyed cellulosic waste |
| 02/26/1997 | EP0759322A1 Method and installation for dissolving solid materials of a bulbous form in a liquid |
| 08/07/1996 | CN1032489C Manufacturing method of viscose staple fibre |
| 06/19/1996 | EP0717131A1 Recycling process of dyed cellulosic waste products |
| 03/28/1996 | DE4434440A1 Environmentally friendly industrial mfr. of viscose |
| 04/04/1995 | US5403530 Solvent spinning, washing, drying and bleaching; solvent is water compatible amine-oxide; elongated fibers |
| 01/18/1995 | CN1097434A Food packing film and its manufacture |
| 11/23/1994 | CN1095431A Manufacture of regenerated cellulosic fibre by zinc free viscose process |
| 06/23/1994 | DE4342723A1 Pflanzliche Zellulosefolie und Verfahren zu ihrer Herstellung Vegetable cellulose film and processes for their preparation |
| 06/22/1994 | CN1088225A Vegetable fibre film product and its process |
| 06/19/1994 | CA2111732A1 Plant cellulose film and process of preparing the same |
| 12/01/1993 | EP0571460A1 Elongate member production method |
| 06/09/1993 | CN1021116C Grass-fibre film used in agriculture and forestry and making method thereof |
| 09/03/1992 | WO1992014871A1 Elongate member production method |
| 03/11/1992 | CN1059378A Manufacturing method of viscose staple fibre |
| 01/22/1992 | CN1058028A Grass-fibre film used in agriculture and forestry and making method thereof |
| 12/11/1991 | EP0460609A1 Process for producing fine cellulose powder |
| 02/10/1988 | CN86104970A Preparation of heavy metal gathering agent using waste containing cellulose |
| 12/02/1986 | CA1214605A1 Method for improving the filterability of a viscose solution |
| 05/14/1986 | EP0181249A1 Enzymatic preparation of a pulp for chemical use |
| 03/10/1986 | CN85102714A Method of treating electroplating waste water by serous cellulose xanthate |
| 11/12/1985 | CA1196627A1 Process for preparing cellulose derivatives |
| 10/22/1985 | US4548647 Method for improving the filterability of a viscose solution |
| 11/14/1984 | EP0124935A1 Method for improving the filterability of a viscose solution |
| 10/23/1984 | US4477951 Acid bath with jets for supplying cellulose xanthates and gas trapping means |
| 03/21/1984 | EP0103164A2 Process for preparing cellulose derivatives with desired solution viscosities |
| 10/18/1983 | US4410693 Process for preparing cellulose derivatives |
| 10/11/1983 | US4409384 Viscose preparation using low concentration caustic |
| 05/25/1983 | EP0079766A2 Viscose preparation using low concentration caustic |
| 03/16/1983 | EP0074012A2 Process for improving the filtration of viscose |
| 02/08/1983 | US4373098 Subsequent xanthation, viscose |
| 01/11/1983 | US4368078 Process for the preparation of viscose and process for the spinning of the viscose thus obtained |
| 08/03/1982 | US4342600 Process for the manufacture of viscoses |
| 07/27/1982 | CA1128504A1 Process for manufacturing viscose |
| 07/20/1982 | US4340429 Alkali cellulose xanthate with sodium hydroxide and water |
| 09/15/1981 | US4289875 Process for continuous filtration and aging of xanthated alkali cellulose |
| 09/01/1981 | US4287334 Process for manufacturing viscose |
| 08/18/1981 | US4284765 Ripening, monitoring velocities |
| 08/12/1981 | EP0033385A2 Process for preparing viscose |
| 04/07/1981 | US4260739 Process and apparatus for preparing a homogeneous solution of xanthated alkali cellulose |
| 07/09/1980 | EP0012928A1 Process for making viscose |
| 04/22/1980 | US4199399 Method for preparing bagasse dissolving pulps and producing rayon having a degree of polymerization of at least 800 therefrom |
| 07/25/1979 | EP0003135A2 Process for improving the solubility of viscose |
| 06/19/1979 | US4158698 Apparatus for continuous xanthation and production of viscose spinning solution |
| 01/23/1979 | US4136255 Process for making solutions of cellulosic compounds |
| 01/23/1979 | CA1047034A1 Activated alkali cellulose and derivatives formed therefrom and a process for making the same |
| 01/09/1979 | CA1045755A1 Process for adding particulate cellulose to alkali cellulose |