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| Number | Title | Issue Date |
| 8088250 | Method of increasing filler content in papermaking The invention provides a method of producing paper with a higher proportion of mineral filler particles than is otherwise be possible without the expected loss in paper strength. The method allows for the use of the greater amount of filler particles by coating at l... | 01/03/2012 |
| 7972477 | Surface treatment of substrate or paper/paperboard products using optical brightening agent The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface o... | 07/05/2011 |
| 7731820 | Compositions of fluorescent whitening agents The invention relates to a composition comprising a) at least one water-soluble fluorescent whitening agent, b) a polymer formed from an ethylenically unsaturated monomer or monomer blend, characterized in that at least one monomer is acrylamide and the water-solubl... | 06/08/2010 |
| 7622022 | Surface treatment of substrate or paper/paperboard products using optical brightening agent The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface o... | 11/24/2009 |
| 7608168 | Alkanolammonium-containing triazinyl flavonate whiteners A process for whitening paper in a size press includes contacting a cellulose sheet with a size press liquor that contains a surface size and a particular whitener containing sulfonate groups and cations, M, wherein at least 10% of all cations M have the formula... | 10/27/2009 |
| 7591926 | Process for production on nonuniformly intensely colored paper and paper obtainable by such process The present invention relates to a process for the production of nonuniformly intensely colored paper with improved printing or lettering features, and paper produced by this process. ... | 09/22/2009 |
| 7578903 | Colored sanitary tissue paper and production method thereof The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's ... | 08/25/2009 |
| 7425234 | Iron oxide pigments The invention relates to iron oxide pigments comprising an average solid body diameter of 0.1 to 500 μm, and to the production and use thereof. ... | 09/16/2008 |
| 7413631 | Opacifying composition for paper or paperboard, processes using same and paper or paperboard produced therefrom An agent for enhancing brightness and opaqueness in paperboard comprises a reaction product selected from the groups consisting of: A) an amide reaction product of a C12-C22 fatty acid, condensed with an amine selected from monoalkanol a... | 08/19/2008 |
| 7387671 | Iron oxide pigments Iron Oxide pigment containing greater than 99% iron oxide, having a chloride content of less than 0.1% and a mean solid diameter of 10 to 500 μm and methods of making the same are disclosed. ... | 06/17/2008 |
| 7384504 | Light-stable and process-stable lignocellulosic materials and their production A novel method for the production of light-stable and process-stable lignocellulosic materials, in particular, the production of mechanical wood pulps with much improved light and process stability is described, as well as the resulting pulps of improved light and p... | 06/10/2008 |
| 7381300 | Process for manufacturing paper and paperboard products The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises applying the composition comprising a cooked starch and a powdered optical brightener to at least one surface o... | 06/03/2008 |
| 7331998 | Liquid formulations of direct dyes The present invention relates to aqueous liquid formulations comprising 5-25% by weight of a dye composition comprising 70-95% by weight of a dye obtainable by reduction or thermal treatment of Direct Y... | 02/19/2008 |
| 7318860 | Green pigment preparations A green pigment preparation that is characterized by a C.I. Pigment Yellow 214 and at least one copper phthalocyanine pigment C.I. Pigment Blue 15:3 and/or C.I. Pigment Blue 15:1 content, the ratio of C.I. Pigment Yellow 214 to the at least one copper phthalocyanine... | 01/15/2008 |
| 7294191 | Pure-coloured, readily dispersible iron oxide red pigments with high grinding stability The present invention relates to pure-coloured, readily dispersible iron oxide red pigments having high grinding stability, to a process for preparing them, and to their use. ... | 11/13/2007 |
| 7270727 | Paper sized with a sizing agent and a selected sizing promoter Sized paper containing an amphoteric promoter resin that is a polymerization reaction product of a quaternary diallylammonium monomer, optionally a diallylammonium monomer, and an unsaturated organic acid is described. The method of sizing paper with such amphoteric... | 09/18/2007 |
| 7258815 | Use of brighteners for the preparation of coating slips The use of optical brighteners of the formula (II): in which Y denotes a radical of the formula and the other substituents have the m... | 08/21/2007 |
| 7198731 | Optical brighteners The present invention relates to the use of compounds of formula (I) wherein all substituents are as defined in the claims as optical brighteners as well as to new mixtures of optical brighteners. ... | 04/03/2007 |
| 7192471 | Aryl-ureido benzoxazinone compounds Fluorescent pigment compounds comprising aryl-ureido benzoxazinone compounds of the general formula (I): wherein R1 is an substituted or unsubstituted aryl group, R2 and R3 are ea... | 03/20/2007 |
| 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 |
| 7175739 | Method for incorporating feature substances into a paper web A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special p... | 02/13/2007 |
| 7150839 | Fluorescent agents Composition comprising a fluorescent material comprising the mixture of one or more metal salts selected from the group consisting of metal oxides and metal hydroxides; one or more carbohydrate(s) selected from the group consisting of sugar and starch; and one or mo... | 12/19/2006 |
| 7078497 | Disazo dyes, and copper complexes thereof, for dyeing paper The dyes of formula (1) according to claim 1 and the copper complexes of dyes of formula (2) according to claim 9 or the mixtures of mono-copper complex with the bis-copper complex are excellently suitable for dyeing paper with good light-fastness prop... | 07/18/2006 |
| 7060124 | Dye combination The invention relates to a dye mixture consisting essentially of one dye of formula (4) and a dye of formula (5). The black dye mixture is advantageously used for ink jet printing and provides high light-resisting and neutral black ink formulations | 06/13/2006 |
| 7060201 | Optical brighteners their composition their production and their use Optical brighteners (PAB) of formula wherein each n independently signifies 1 or 2, the group SO3M shown with the floating bond is linked ... | 06/13/2006 |
| 7007748 | Indirect water heater and method of manufacturing same A heat exchange assembly adapted for use in a water tank is provided. The heat exchange assembly includes a tube having end portions and a coiled portion between the end portions. A fitting is connected to at least one of the end portions of the tube. The fitting ha... | 03/07/2006 |
| 6991706 | Clothlike pattern densified web An improved paper and the process of making an improved paper web is disclosed. The improved paper is characterized as having two regions; one is a network (or open grid) region and the other is a plurality of domes. At least a portion of either region of the paper ... | 01/31/2006 |
| 6989056 | IR reflective pigment compositions The present invention relates to IR reflective black pigment compositions comprising a halogenated copper phthalocyanine such as C.I. Pigment Green 7 and a perylenetetracarboxylic acid diimide such as C.I. Pigment Violet 29. The compositions are characterized by an ... | 01/24/2006 |
| 6969444 | Paper coating slip containing n-vinylformamide Paper coating slips whose additives comprise addition polymers or copolymers containing N-vinylformamide in (co)polymerized form, and their use. ... | 11/29/2005 |
| 6936078 | Fluorescent brightener pigment compositions The invention relates to a fluorescent brightener pigment and the use of said pigment, which is derived from formaldehyde, for improving the whiteness of paper or textiles, or for incorporation in detergent compositions. ... | 08/30/2005 |
| 6914955 | Heat exchanger tube support structure A support plate for retaining tube array spacing within a heat exchanger tube and shell structure. The support plate having a plurality of individual tube receiving apertures formed therein. Each aperture has at least three inwardly protruding members and bights are... | 07/05/2005 |
| 6911116 | Cationically modified white pigments, their production and use Cationically modified white pigments (W) in particulate form, essentially consisting of a particulate inorganic white pigment (M) of a particle size in the range of 0,1 to 40 μm and an applied water soluble, cationic, crosslinked polymer (PA) containing ... | 06/28/2005 |
| 6890454 | Optical brighteners compositions their production and their use The invention relates to an optical brightener mixture (W) comprising optical brighteners (A) of formula (Ia), and (B) of formula (Ib) and optionally (C) of formula (Ic) as defined herein, their concentrated aqueous solutions (S), their production and their use.... | 05/10/2005 |
| 6872282 | Surface finishing of paper or board Surface finishing of paper or board by applying an aqueous solution (LW) of a surface-finishing active ingredient (W) to a hydrophilic paper or board sheet (B), in which (W) consists of (W | 03/29/2005 |
| 6860906 | Process for preparing solutions of anionic organic compounds Described is a process for preparing concentrated solutions or suspensions of anionic organic compounds which comprises a) acidifying an aqueous solution or suspension of an anionic organic compound containing salts and/or impurities to a pH of 4.5 or less, if the p... | 03/01/2005 |
| 6858255 | Thickeners for paper dye compositions The present invention is a thickened dye composition and method of applying same to a paper web that produces colored or patterned paper having good bleed resistance. The dye composition of the invention includes a binder; a dye; a thickener selected from the group ... | 02/22/2005 |
| 6852198 | Resin composition, water-resistant/moisture-proof paper, containing the same, and process for producing the same Disclosed is a resin composition for water-resistant and moisture-proof paper comprising 40 to 75 parts by weight of a polyolefin (A), 25 to 60 parts by weight of a tackifier (B) and 0 to 20 parts by weight of a compatibilizing agent (C), the total of (A), (B) and (... | 02/08/2005 |
| 6808559 | Kaolin clay pigments suited to rotogravure printing applications and method for preparing the same The present invention provides kaolin clay pigments having at least the following characteristics: Brightness (GE): at least about 89.0; Shape Factor: at least about 30; Brookfield viscosity, measured at 20 rpm and at less than or equal to about 65% solids: about 10... | 10/26/2004 |
| 6792953 | Tobacco smoke filter A tobacco smoke filter a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye. A method of making a first tobacco smoke filter segment, comprising the steps of, first, providing one or more than one substance; producing a mixture of cellulose f... | 09/21/2004 |
| 6773549 | Method for producing an enameled, optically brightened printing paper A coated, optically brightened printing paper includes a coating base paper and an applied coating containing a pigment, a binder, and color coating supplements, with an optical brightener containing a derivative of diaminostilbene disulfonic acid applied to the out... | 08/10/2004 |
