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| Number | Title | Issue Date |
| 8172983 | Controllable filler prefloculation using a dual polymer system A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises sequential addition of high and low molecular weight flocculating agents to an aqueous dispersion of filler particles followed by shearing of the res... | 05/08/2012 |
| 8088252 | Salt-sensitive cationic polymeric binders for nonwoven webs and method of making the same A solution with a salt-sensitive polymer binder for use in fibrous webs, where the binder contains a copolymer comprising repeat units derived from butyl acrylate, methyl methacrylate and amino functionalized alkyl acrylate or methacrylate or amino functionalized al... | 01/03/2012 |
| 7955473 | Process for the production of paper The present invention relates to a process for producing paper which comprises: (vii) providing an aqueous suspension comprising cellulosic fibres, (viii) adding to the suspension after all points of high shear: ... | 06/07/2011 |
| 7776181 | Retention improving composition A novel retention aid is provided, which can realizes not only high retention but also excellent paper formation and is easy to use, in various papermaking processes. A composition for improving retention is provided, which comprises (A) a cationic water-soluble pol... | 08/17/2010 |
| 7727359 | Temporary wet strength resin for paper applications A thermosetting resin comprising a reacted A) first partially crosslinked glyoxalated polymer comprising a reacted (i) first polyacrylamide backbone and (ii) a first glyoxal component; and B) a second crosslinked glyoxalated polymer comprising a reacted (i) second p... | 06/01/2010 |
| 7678232 | Process for incorporating poorly substantive paper modifying agents into a paper sheet via wet end addition Synthetic co-polymers having moieties capable of forming hydrogen bonds, ionic bonds, or covalent bonds with cellulose fibers and paper modifying moieties capable of modifying a paper sheet are disclosed. These synthetic co-polymers are derived from the reaction of ... | 03/16/2010 |
| 7547376 | Paper improver The invention provides a paper quality improver for papermaking that allows improvement in the bulky value and the optical properties such as brightness and opacity as well as in the paper strength of a sheet obtained by papermaking a pulp material. The paper qualit... | 06/16/2009 |
| 7488403 | Blends of glyoxalated polyacrylamides and paper strengthening agents Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent. The other compo... | 02/10/2009 |
| 7442280 | Process for the production of paper A process for the production of paper from a suspension containing cellulosic fibers, and optional fillers, which comprises adding to the suspension a drainage and retention aid comprising a cationic organic polymer, forming and dewatering the suspension on a wire, ... | 10/28/2008 |
| 7364641 | Manufacture of paper and paper board Process for making paper or paper board comprising, forming an aqueous cellulosic suspension, adding a retention system to the cellulosic suspension, draining the suspension on a screen to form a sheet and drying the sheet, wherein the retention system comprises a s... | 04/29/2008 |
| 7344621 | Paper additive composition and method for producing paper using the same A paper additive composition comprising an amide compound (a) obtained by reacting a polyamine and a carboxylic acid or a salt of the amide compound (a) is provided. The polyamine is shown by formula (1): R—(NH—R1)n-NH2 (1) | 03/18/2008 |
| 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 |
| 7306701 | Production of paper, board and cardboard Paper, board and cardboard are produced by shearing the paper stock, adding a microparticle system comprising a cationic polymer and a finely divided inorganic component to the paper stock after the last shearing stage before the head box, draining the paper stock w... | 12/11/2007 |
| 7306700 | Process for the production of paper The present invention relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, comprising adding to the suspension drainage and retention aids comprising a cationic organic polymer and anionic micropartic... | 12/11/2007 |
| 7303654 | Cellulosic product and process for its production The present invention relates to a process for the production of a cellulosic product which comprises (i) providing an aqueous cellulosic suspension; (ii) adding to the suspension a clay having 3R2 stacking; and (iii) dewatering the obtained suspension. T... | 12/04/2007 |
| 7303653 | Sizing agent and recording sheet having the same A sizing agent includes a vinyl copolymer having a repeating unit (i) having a quaternary amino group and a repeating unit (ii) derived from acrylic monomers having a hydrophilic polyoxyethylene, the ratio by mass, (i):(ii), of the repeating unit (i) to the repeatin... | 12/04/2007 |
| 7285182 | Composition for surface treatment of paper A composition for surface treatment of paper which includes a nanoparticle fraction, and a carrier fraction for detaining the nanoparticles in the surface layer. The carrier fraction includes plate-like pigment particles, and at least one binder. The invention also ... | 10/23/2007 |
| 7258764 | Soft and strong webs from highly refined cellulosic fibres Soft and strong cellulose-based fibrous web, comprises a) cellulosic fibres having a freeness value of more than 26° SR measured according to DIN-ISO 5267/1 (March 1999), b) a water-soluble cationic polymer, ... | 08/21/2007 |
| 7250448 | Anionic copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaC... | 07/31/2007 |
| 7244339 | Retention and drainage system for the manufacturing of paper A process for manufacturing a paper stock for use in making paper, paperboard and similar cellulosic products, by adding, at one or more different points of the wet end of the paper-making machine, a secondary retention and drainage agent containing a liquid smectit... | 07/17/2007 |
| 7229529 | Low odor binders curable at room temperature Topically-applied binder materials for imparting wet strength to soft, absorbent paper sheets, such as are useful as household paper towels and the like, include an epoxy-reactive polymer, such as a carboxyl-functional polymer, and an epoxy-functional polymer. These... | 06/12/2007 |
| 7229530 | Method for reducing undesirable odors generated by paper hand towels A process for manufacturing a cellulosic paper product is provided. The process comprises forming an aqueous suspension of papermaking fibers; depositing the aqueous suspension onto a sheet-forming fabric to form a wet web; dewatering the wet web to form a partially... | 06/12/2007 |
| 7189307 | Low odor binders curable at room temperature Topically-applied binder materials for imparting wet strength to soft, absorbent paper sheets, such as are useful as household paper towels and the like, include an epoxy-reactive polymer, such as a carboxyl-functional polymer, and an epoxy-functional polymer. These... | 03/13/2007 |
| 7189776 | Aqueous composition The present invention relates to an aqueous composition comprising anionic organic polymeric particles and colloidal anionic silica-based particles. The anionic organic polymeric particles are obtainable by polymerising one or more ethylenically unsaturated monomers... | 03/13/2007 |
| 7169261 | Silica-based sols An aqueous sol containing silica-based particles which has an S-value within the range of from 10 to 45%, a viscosity within the range of from 5 to 40 cP, and a molar ratio of SiO2 to M2O, where M is alkali metal or ammonium, within the range o... | 01/30/2007 |
| 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 |
| 7141181 | Composition comprising amphoteric polymeric flocculants A composition is provided which comprises amphoteric polymers comprising, as constituent monomer units, a cationic monomer unit, an anionic monomer unit, and optionally a nonionic monomer unit and having a 0.5% salted viscosity of 10 to 120 mPa·s, wherein said amph... | 11/28/2006 |
| 7129217 | Aqueous acrylamide solution containing saccharide This invention provides an aqueous solution of acrylamide that is useful as a starting material for high-quality polyacrylamide. Starting materials for polyacrylamide are an aqueous solution of acrylamide containing a saccharide and an aqueous solution of acrylamide... | 10/31/2006 |
| 7125469 | Temporary wet strength resins Temporary wet strength resins, more particularly, temporary wet strength resins comprising a polymer backbone, wherein the polymer backbone comprises a co-crosslinking monomeric unit, preferably a reversible co-crosslinking monomeric unit, especially in the presence... | 10/24/2006 |
| 7119148 | Glyoxylated polyacrylamide composition strengthening agent A method for making a storage-stable glyoxalated polyacrylamide composition suitable for use as a strengthening agent for paper in which the glyoxal is added to the base polyacrylamide polymer in two portions and a scavenger for aldehyde groups is used. ... | 10/10/2006 |
| 7066006 | Method of collecting data relating to attributes of personal care articles and compositions Novel methods for measuring the soothing attributes of personal care compositions are disclosed. The methods disclosed are particularly suitable for measuring and comparing the soothing attributes of facial tissue to determine which facial tissue is most soothing to... | 06/27/2006 |
| 6998016 | Method of making a non compacted paper web containing refined long fiber using a charge controlled headbox and a single ply towel made by the process The present invention is a through-air-drying process for producing a fibrous web that possesses not only softness and absorbency but also strength. The method of the present invention monitors and controls the overall charge in the headbox. ... | 02/14/2006 |
| 6994770 | Strength additives for tissue products A paper product having improved strength properties as disclosed. In accordance with the present invention, the paper product is treated with a strength agent comprising a derivatized polyethylene oxide. The paper product can be, for instance, a facial tissue, a bat... | 02/07/2006 |
| 6939437 | Paper making processes using enzyme and polymer combinations Methods of making paper or paperboard are described. In one method, at least one cellulytic enzyme composition and at least one cationic polymer composition are introduced to a paper making pulp at about the same time to form a treated pulp. The pulp may also be tre... | 09/06/2005 |
| 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 |
| 6918994 | Soft printing paper Printing paper superior in a texture, a feel and ease in turning the page is provided by adjusting the product of the paper density, the breaking length of a paper-making direction and the Young's modulus of the paper-making direction of the paper made by a paper ma... | 07/19/2005 |
| 6893537 | Tissue products containing a flexible binder A tissue product that has a relatively low level of lint and slough is provided. For example, the tissue product contains a flexible binder copolymer that is at least formed from an ethylenically unsaturated monomeric constituent and an unsaturated polysiloxane mono... | 05/17/2005 |
| 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 |
| 6824651 | Talc composition and use in paper products This invention discloses a talc additive for use as a filler in making paper products which is useful in preventing dusting or linting of paper. Also disclosed is a method of making the additive and using it in making paper. ... | 11/30/2004 |
| 6824650 | Fibrous materials treated with a polyvinylamine polymer Textile materials, including paper webs, treated with a polyvinylamine polymer and a second agent that interacts with the polyvinylamine polymer is disclosed. The second agent added with the polyvinylamine polymer can be, for instance, a polymeric anionic reactive c... | 11/30/2004 |
