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| Number | Title | Issue Date |
| 7615135 | Retention and drainage aids The present invention describes polymeric retention and drainage aids for cellulosic fiber compositions and methods of use of the same. ... | 11/10/2009 |
| 7318881 | Process for sizing paper A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein ... | 01/15/2008 |
| 7229525 | Methods to enhance pulp bleaching and delignification A method to enhance brightness in Chemical and Mechanical pulps comprising adding an organic sulfide chelant is described and claimed. A method to enhance delignification in a Chemical pulp comprising adding an organic sulfide chelant is also described and cl... | 06/12/2007 |
| 7156955 | Papermaking process using a specified NSF to silica-based particle ratio The present invention refers to a process for the production of paper from a suspension containing cellulosic fibers, and optionally fillers, comprising adding to the suspension at least one cationic organic polymer and an aqueous silica-containing composition compr... | 01/02/2007 |
| 6939443 | Anionic functional promoter and charge control agent The invention relates to a functional promoter comprising a water-soluble anionic polymer having a molecular weight of at least about 50,000 daltons and a molecular weight charge index value of at least about 10,000, and a cationic strength component. The invention ... | 09/06/2005 |
| 6918995 | Process for the production of paper The invention relates to a process for the production of paper from an aqueous suspension containing cellulosic fibers, and optional fillers, which comprises separately adding to the suspension a cationic organic polymer having one or more aromatic groups and an ani... | 07/19/2005 |
| 6846384 | Process for sizing paper A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, an anionic or cationic sizing dispersion, and a sizing promoter comprising a cationic organic polymer having an aromatic group; and an anionic p... | 01/25/2005 |
| 6802939 | Aqueous polymeric emulsion compositions and their use for the sizing of paper A method of sizing paper by applying a composition comprising an aqueous dispersion of polymeric particles of particle size up to 1 micron, preferably 80-200 nm, wherein the polymeric particles comprise a water insoluble polymer matrix, preferably formed from styren... | 10/12/2004 |
| 6706147 | Process for making fiber mats for materials of construction having improved tear strength The invention relates to a coated fiber mat of improved tear strength upon dividing pieces of the coated mat and the coating which comprises a cured, non-woven, fiber glass mat containing a polysiloxane wherein the fibers are fixedly distributed in a formaldehyde ty... | 03/16/2004 |
| 6579417 | Flocculation method for making a paper sheet According to the present invention, a cross-linked polymer or copolymer formed by reverse phase emulsion polymerization from suitable water-soluble monomers or from mixtures of such monomers is used as a retention agent. The process according to the inven... | 06/17/2003 |
| 6444091 | Structurally rigid nonionic and anionic polymers as retention and drainage aids in papermaking This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid nonionic or anionic polymer.... | 09/03/2002 |
| 6432271 | Method of increasing retention and drainage in papermaking using high molecular weight water-soluble anionic or nonionic dispersion polymers This invention is directed to a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective flocculating amount of a high molecular weight water-soluble anionic or nonionic dispersion polymer.... | 08/13/2002 |
| 6365667 | Synthetic polymers having hydrogen bonding capability and containing aliphatic hydrocarbon moieties Synthetic polymers having hydrogen bonding capability and one or more aliphatic hydrocarbon moieties are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at ... | 04/02/2002 |
| 6310132 | Sizing agents for paper This invention relates to novel aqueous emulsion polymers obtained by free-radical initiated addition polymerization of at least one monomer in the presence of degraded starch and at least one polymeric emulsifier from the series of sulfo-containing malei... | 10/30/2001 |
| 6267844 | Process for production of paper using thioether compounds A paper production process, characterized by the process step of providing to the paper at some point in the production process a compound of formula (I) ##STR1## which reduces the tendency of the obtained paper products, particularly those made from... | 07/31/2001 |
| 6255400 | Polymer and applications thereof A polymer (B) is prepared by polymerizing one or more vinyl monomers (c) in the presence of a polymer (A) prepared by polymerizing one or more vinyl monomers (a) selected from the group consisting of vinyl monomers represented by the general formula (1): ... | 07/03/2001 |
| 6200420 | Method of using an anionic composite to increase retention and drainage in papermaking Anionic nanocomposites for use as retention and drainage aids in papermaking are prepared by adding an anionic polyelectrolyte to a sodium silicate solution and then combining the sodium silicate and polyelectrolyte solution with silicic acid.... | 03/13/2001 |
| 6171444 | Method and composition for the sizing of paper with a mixture of a polyacid and a polybase Compositions and methods are provided for the sizing of paper, to enhance the quality of images printed thereon. The novel sizing compositions contain as a sizing agent a mixture of a polyacid and a polybase. When applied to a paper substrate, such as in ... | 01/09/2001 |
| 6165320 | Method of sizing This invention relates to a method of sizing paper comprising use of a sizing composition comprising: (a) at least one thermoplastic resin selected from the group consisting of thermoplastic rosins having an acid number less than 50, thermoplastic hydroca... | 12/26/2000 |
| 6143800 | Compositions and method for inhibiting organic contaminant deposition in pulp and papermaking systems Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking systems a composition comprising a di... | 11/07/2000 |
| 6090242 | Method of improvement strength of papers Novel polymers are provided having phosphonated and sulphonated substituent groups such that the polymer is multifunctional in its use. Optional amide substituent are used to reduce electrostatic charge density or for hydrogen bonding. An advantage of the... | 07/18/2000 |
| 6030495 | Method for increasing brightness in pulp paper and polymeric materials Novel substantially odor-free polymeric thiol-containing antioxidant compounds suitable for preventing light induced brightness reversion or yellowing of pulps and papers and polymeric materials are described. The novel compounds are based on a polymeric ... | 02/29/2000 |
| 5993530 | Aqueous dispersion of biodegradable resin composition A thermally-decomposable, biodegradable resin composition is dispersed and stabilized in water optionally along with additives to give an aqueous dispersion of the resin composition. In the dispersion, the base polymer consists substantially of a water-in... | 11/30/1999 |
| 5989391 | Reaction product of sulfonated amino resin and amino group-containing substance and papermaking process A product obtained by reacting a sulfonated amino resin and an amino group-containing substance in a weight ratio of from 1:0.05 to 1:3.... | 11/23/1999 |
| 5827616 | Coated greaseproof paper and process for manufacturing it A process for manufacturing a material from a greaseproof paper used as support. At least one face of the support is coated with water or at least one aqueous solution. The support thus becomes a pliable support, The surface of the pliable support is trea... | 10/27/1998 |
| 5824192 | Method and adjuvant composition to improve retention of particles on a wire screen Disclosed is a method for the production of paper and an adjuvant composition comprising the following ingredients: 30 to 80% by weight of phenolic resin or modified phenolic resin; 10 to 50% by weight of melamine resin; and 5 to 35% by weight of at least... | 10/20/1998 |
| 5795377 | Method for modifying papermaking sludge and products made from modified papermaking sludge Papermaking sludge can be modified to a modeling clay-like consistency by the addition of one or more dispersing agents, such as polyacrylamide. The modified papermaking sludge can be formed into a number of useful products, such as paper sheets or extrud... | 08/18/1998 |
| 5762757 | Methods for inhibiting organic contaminant deposition in pulp and papermaking systems Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking systems a composition comprising a di... | 06/09/1998 |
| 5755930 | Production of filled paper and compositions for use in this Filled paper is made by adding a cationising amount of cationic polymer to precipitated calcium carbonate or other filler either as a slurry or in a thick stock component, producing a thin stock containing the cationised filler and then treating the thin ... | 05/26/1998 |
| 5733414 | Process of making paper During the manufacture of paper from a cellulosic suspension, retention is improved by adding to the suspension a water soluble cationic polymer containing 0.1 to 15 mole % cationic monomer groups and having an intrinsic viscosity of at least 4 dl/g and t... | 03/31/1998 |
| 5622786 | Polymer-reinforced, eucalyptus fiber-containing paper An improved-strength, polymer-reinforced paper which includes fibers, of which at least about 30 percent on a dry weight basis are eucalyptus fibers; and from about 15 to about 60 percent by weight, based on the dry weight of the fibers, of a latex binder... | 04/22/1997 |
| 5595828 | Polymer-reinforced, eucalyptus fiber-containing paper An improved-strength, polymer-reinforced paper which includes fibers, of which at least about 30 percent on a dry weight basis are eucalyptus fibers; and from about 15 to about 60 percent by weight, based on the dry weight of the fibers, of a latex binder... | 01/21/1997 |
| 5595629 | Papermaking process A papermaking process comprising forming an aqueous cellulosic papermaking slurry and adding a cationic polymer and an anionic polymer to the slurry to increase retention and/or drainage is disclosed. The anionic polymer comprises a formaldehyde condensat... | 01/21/1997 |
| 5538596 | Process of making paper According to the invention, a process of making paper comprises forming a cellulosic suspension, adding retention aid to the suspension, draining the suspension through a screen to form a sheet, and drying the sheet and in this process we add to the suspe... | 07/23/1996 |
| 5421959 | Composite comprising paper and electro-conducting polymers and its production process A composite comprising a paper and a conjugated electroconducting polymer, the conjugated electroconducting polymer existing between fibers or in close contact with fibers of the paper, is disclosed. A process for producing a composite comprising a paper ... | 06/06/1995 |
| 5368694 | Pitch reduction on paper machine forming fabrics and press fabrics A method for controlling or inhibiting the deposition of pitch derived from aqueous pulp suspensions having a neutral or cationic soluble charge onto paper machine equipment surfaces which contact the pulp, comprising a) contacting the pulp with an anioni... | 11/29/1994 |
| 5336374 | Composite comprising paper and electro-conducting polymers and its production process A composite comprising a paper and a conjugated electroconducting polymer, the conjugated electroconducting polymer existing between fibers or in close contact with fibers of the paper, is disclosed. A process for producing a composite comprising a paper ... | 08/09/1994 |
| 5300194 | Pitch control Accumulation of pitch or stickies in pulp or paper making is controlled by applying to the pulp or paper making equipment which is not in continuous contact with water separately a water soluble cationic polymer and a water soluble anionic polymer.... | 04/05/1994 |
| 5258466 | Paper size Emulsion polymers which are prepared by free-radical polymerisation of monomers in the presence of a) polymers of the formulae ##STR1## wherein the radicals have the meanings given in the description, and b) low-molecular anionic emulsifiers, are ou... | 11/02/1993 |
| 5082527 | Nitrogen-containing polymeric compounds Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or dihalogenohydrin are used for impa... | 01/21/1992 |
