| Patents for D21H 17 - Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution (19,322) |
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| 08/09/1989 | CN1034597A High-filling paper making process using straw, wood pulp as fibrous raw material |
| 08/08/1989 | US4855343 Paper size based on finely divided aqueous dispersions |
| 08/02/1989 | EP0326135A1 Carrier fleece for impregnated releasable reagents |
| 08/01/1989 | US4853431 Adding a mixture of weak and strong acids |
| 08/01/1989 | US4853086 Hydrophilic cellulose product and method of its manufacture |
| 08/01/1989 | US4853085 Neutral sized paper for use in the production of gypsum wallboard |
| 08/01/1989 | US4853083 Method of forming beater-saturated sheet using carbonate ion |
| 07/27/1989 | WO1989006638A2 Retention and drainage aid for papermaking |
| 07/27/1989 | WO1989006637A1 Polyaluminosilicate microgel process and composition |
| 07/25/1989 | US4851532 Ionene polymeric compositions, their preparation and use |
| 07/25/1989 | US4851291 Impregnated with phase change or plastic crystalline material; protective clothing |
| 07/25/1989 | US4851021 Multi-ply composites and sheets of epoxy and flocced 2:1 layered silicates and methods for them |
| 07/25/1989 | EP0282571A4 Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized. |
| 07/19/1989 | EP0324354A2 Graft polymers, preparation process and use |
| 07/18/1989 | US4849131 Nonionic emulsifier and substituted succinic anhydride compositions therewith |
| 07/18/1989 | US4849055 Process for making paper using a substituted succinic anhydride as a sizing agent |
| 07/13/1989 | WO1989006294A1 Method of reducing pitch in pulping and papermaking |
| 07/13/1989 | WO1989006246A1 Vinyl mono- and copolymers containing side-chains |
| 07/12/1989 | EP0323847A1 Vinyl polymers and copolymers containing side chains |
| 07/12/1989 | EP0323732A2 Cellulosic fibre - and chitosan-based composite material and a method for the preparation thereof |
| 07/12/1989 | EP0323627A2 Modified galactomannans and process for their preparation |
| 07/12/1989 | EP0323509A1 Process for preparing cationic, water-soluble resin and water-treating agent containing said resin |
| 07/11/1989 | US4847315 Novel amino resins useful in sizing paper and their use |
| 07/11/1989 | US4847143 Addition polymer,glyoxal resin, metal salt catalyst, and sulfate surfactant |
| 07/05/1989 | EP0151578B1 Improvements in paper and board manufacture |
| 07/04/1989 | US4845148 Dry strength resin of amino/aldehyde acid colloid with acrylamide polymer, process for the production thereof and paper produced therefrom |
| 07/04/1989 | US4844777 (meth)acrylate coating hardened by electron beams |
| 06/29/1989 | WO1989005884A1 Low-density material containing a vegetable filler |
| 06/28/1989 | EP0322287A1 Wet-laid sheet for use as a coating support |
| 06/28/1989 | EP0321583A1 Formed calcium silicate plate and process for its production |
| 06/27/1989 | US4843118 Acidized fracturing fluids containing high molecular weight poly(vinylamines) for enhanced oil recovery |
| 06/27/1989 | US4842691 Sizing agents in neutral range and sizing methods using the same |
| 06/22/1989 | DE3742173A1 Blockiergeschuetzte bremsanlage fuer kraftfahrzeuge Blockiergeschuetzte brake system for motor vehicles |
| 06/21/1989 | EP0320986A2 Flocculation and/or fixing agnts for paper sizing |
| 06/21/1989 | EP0320609A2 Anionic paper surface sizing agent |
| 06/21/1989 | EP0320512A1 Process for making paper |
| 06/20/1989 | US4840705 Papermaking method |
| 06/15/1989 | WO1989005376A1 Sizing agent for paper |
| 06/15/1989 | DE3741282A1 Leimungsmittel fuer papier Sizing agent for paper |
| 06/14/1989 | EP0320121A2 Method for stabilizing aqueous solutions of cationic thermosetting polyamide-epichlorohydrin resins |
| 06/14/1989 | EP0319846A2 Method for manufacturing a paper or cardboard product and a product manufactured by the method |
| 06/13/1989 | US4839415 Polymerizing maleic anhydride with alpha-olefins; reacting copolymers with diamines; neutralization then quaternization with epichlorohydrin |
| 06/13/1989 | CA1255457A1 Process for the treatment of a fibrous sheet obtained by papermaking process with a view to improving its dimensional stability and application of said process to the field of floor and wall-coverings |
| 06/06/1989 | US4837070 Cellulose web with rubber coating |
| 05/31/1989 | EP0317576A1 Composite materials and method of preparation |
| 05/30/1989 | US4835212 Particles of actylic ester and nitrile copolymers having a protecctive coating of a biodegraded cellulose |
| 05/30/1989 | US4835020 Polymerizing a partially neutralized acrylic acid onto a fibrous substrate using a decomposable free radical catalyst followed by heating |
| 05/30/1989 | US4834910 Coating agent for imparting electroconductivity |
| 05/24/1989 | EP0200755B1 Hydrophobing agent for cellulosic fibers, method of preparing the agent, and use of the agent for stock hydrophobation |
| 05/23/1989 | US4832792 Storage stable paper size composition containing ethoxylated castor oil |
| 05/18/1989 | WO1989004398A1 Sheets having improved stiffness from fiber, latex and coalescing agent |
| 05/17/1989 | EP0315876A2 Dispersion copolymers containing urethane groups, based on olefinically unsaturated monomers, process for their preparation and their use |
| 05/17/1989 | EP0315718A2 Aqueous dispersion of cationic ethylenic copolymer |
| 05/16/1989 | US4830843 Synthetic lamellar magnesium phyllosilicate and process for preparation thereof |
| 05/16/1989 | US4830673 Pretreatment with ethylene glycol |
| 05/16/1989 | CA1254316A1 Functionalized polyacrylamide grafted starch polymer wet strength additives |
| 05/16/1989 | CA1254315A1 Cationic grafted starch copolymers |
| 05/11/1989 | DE3836658A1 Modifiziertes papier, verfahren zu seiner herstellung und ein pflanzenwuchszellsystem, hergestellt aus diesem papier Modified paper, process for its production and a plant growth-cell system made from this paper |
| 05/10/1989 | EP0315476A1 Process for internally strengthening paper and board products and products resulting therefrom |
| 05/09/1989 | CA1253659A1 Kaolin clay-based pigment |
| 05/05/1989 | WO1989003863A1 Cationic clays and uses in paper and paints |
| 05/03/1989 | EP0314291A1 Silicon nitride coated clays and method of preparation |
| 05/02/1989 | US4826881 Crosslinked carboxylated polyester, papermaking |
| 05/02/1989 | US4826790 Production of porous mullite bodies |
| 05/02/1989 | US4826789 Porous inorganic materials |
| 05/02/1989 | US4826714 Impregnated corrugted sheets for packing boxes and method of manufacture |
| 04/25/1989 | US4824807 Flexible alkali metal silicate glass products |
| 04/25/1989 | US4824689 Method for producing virucidal tissue products containing water-soluble humectants |
| 04/25/1989 | US4824523 Method of making paper with high filler content |
| 04/25/1989 | CA1253142A1 Method of improving the color of tall oil rosin ester |
| 04/25/1989 | CA1253129A1 Porous inorganic materials |
| 04/19/1989 | EP0311642A1 Temperature adaptable textile fibers and method of preparing same. |
| 04/18/1989 | US4822851 Process for the preparation of cationized polyvinyl alcohol |
| 04/18/1989 | US4822452 Polyetherurethane block copolymer thickener |
| 04/13/1989 | DE3733234A1 Polysaccharide aus dem endosperm des samens von prosopis juliflora, verfahren zu deren gewinnung und ihre verwendung Polysaccharides from the endosperm of the seed of prosopis juliflora, process for their manufacture and their use |
| 04/12/1989 | EP0310959A1 Process for producing a neutral paper |
| 04/11/1989 | US4820645 Testing polyelectrolytes |
| 04/11/1989 | US4820582 Alkylketene dimer as sizing agent |
| 04/11/1989 | US4820380 Stabilized starch suspensions |
| 04/06/1989 | WO1989002900A1 Polysaccharides from the endosperm of seeds of prosopis juliflora, process for extracting them, and their use |
| 04/06/1989 | WO1989002789A1 Oxonated poly(alkylene oxide) surface treatment agents |
| 04/05/1989 | EP0310350A2 Decorative laminates having 3-dimensional effect and sheets for use therein |
| 04/05/1989 | EP0309908A2 Process for colouring paper |
| 04/05/1989 | EP0309475A1 Process for the preparation of a phenol-based resin for the production of laminates. |
| 04/04/1989 | US4818341 Production of paper and paperboard of high dry strength |
| 04/04/1989 | US4818294 Kaolinite aggregation using organo-silicon compounds |
| 04/04/1989 | CA1251905A1 Sheet type felt |
| 03/29/1989 | EP0308752A2 Method for dewatering paper |
| 03/28/1989 | US4816073 Paper, paperboard, polyaluminum compounds |
| 03/28/1989 | CA1251603A1 Saturating grade paper |
| 03/22/1989 | EP0307778A2 Surface-sizing agent for paper and paper-like materials |
| 03/21/1989 | CA1251594A1 Flocculating agent and a process for its production |
| 03/16/1989 | DE3829002A1 Security printing and writing substrate authenticated by heating |
| 03/16/1989 | DE3729548A1 Process for introducing pulverulent chemicals into fibrous materials |
| 03/15/1989 | EP0307139A2 Vesiculated polymer granules |
| 03/15/1989 | CN1031642A Improvements relating to smoking articles |
| 03/14/1989 | US4812299 Paper filler |
| 03/14/1989 | US4812257 Mixture of silica and calcium hydroxide or oxide |
| 03/14/1989 | CA1251034A1 Chemically-active composition containing divalent iron ions |
| 03/08/1989 | EP0305433A1 Method for manufacturing a mineral fibre panel. |