| 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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| 05/29/1990 | US4929687 Polymers and process of making same |
| 05/29/1990 | US4929309 Nitrogen-containing water-soluble polymeric compounds |
| 05/29/1990 | CA2003221A1 Flame-retardant high-temperature resistant paperlike materials based on polyimide fibers |
| 05/23/1990 | EP0369328A2 Alkyl ketene dimer dispersion |
| 05/23/1990 | EP0209538B1 Process for manufacture of paper holding clay or other fillers |
| 05/23/1990 | CN1042340A Polymeric basic aluminium silicate-sulphate |
| 05/22/1990 | US4927498 Retention and drainage aid for papermaking |
| 05/22/1990 | US4927496 Container for consummable liquids |
| 05/22/1990 | US4927465 Kaolin clays for pitch control |
| 05/17/1990 | WO1990005211A2 Paper-like or cardboard-like raw material and process for making it |
| 05/15/1990 | US4925530 Fillers and papermaking fibers treated with charged polymers separately |
| 05/15/1990 | US4925528 Polymeric surfactant; thickener; antifoam agent; papermaking |
| 05/15/1990 | US4925527 Method for the recovery of turpentine and heat in a refiner pulping process |
| 05/15/1990 | CA1269091A1 Non-woven activated carbon fabric |
| 05/09/1990 | EP0366825A1 Process for the preparation of fine platelike boehmite |
| 05/09/1990 | EP0366764A1 Processes for the production of paper and paper board. |
| 05/08/1990 | CA1268888A1 Stable latexes containing phosphate surface groups |
| 05/07/1990 | CA2001784A1 Paper, cardboard or paperboard-like material and a process for its production |
| 05/04/1990 | CA2002254A1 Process for the production of fine tabular alumina monohydrate |
| 05/02/1990 | EP0365726A1 Improvements in cellulosic fibrous webs |
| 04/25/1990 | EP0364798A2 Cross-linked, water soluble copolymers, process for their manufacture and use thereof |
| 04/25/1990 | EP0364772A2 Copolymers containing perfluor alkyl groups |
| 04/25/1990 | EP0364629A1 Paper product prepared with structured latex particles having reinforcing and opacity characteristics and process for preparing the same |
| 04/24/1990 | US4920171 With protective coating of clay and colloidal polyethylene on one surface only |
| 04/24/1990 | US4919848 Process for the quenching of fluorescence, and new cationic naphthalene-peri-dicarboxylic acid imide derivatives |
| 04/24/1990 | US4919758 Heat treatment of paper products having starch additives |
| 04/24/1990 | US4919757 Ethylene-aminoalkylacrylamide copolymers quaternized with epichlorhydrin added to pulp slurry; papermaking, electrography |
| 04/24/1990 | US4919753 Continuous, branching network of cellulose strands from culturing acetobacter, strain resistant to mutation |
| 04/24/1990 | US4919725 Novel dispersible active sizing composition |
| 04/24/1990 | US4919724 Stable aqueous emulsions of ketene dimer/nonreactive hydrophobe |
| 04/18/1990 | EP0364175A2 Process for the preparation of water-soluble cationic polymer |
| 04/18/1990 | EP0363745A2 Polybase, process for its preparation and its use |
| 04/17/1990 | US4917765 Vesiculated polymer granules |
| 04/11/1990 | EP0362770A2 Dry strength additive for paper |
| 04/10/1990 | US4915923 Filler for ink jet recording paper |
| 04/10/1990 | US4915786 Nonionic emulsifier and substituted succinic anhydride compositons therewith |
| 04/10/1990 | US4915118 Smoking article wrapper and method of making same |
| 04/05/1990 | WO1990003262A1 Base composition for the fabrication of a flexible and porous sheet product consisting basically of elastomer powder, sheet product and preparation method |
| 04/04/1990 | EP0361763A2 Papermaking filler compositions |
| 04/03/1990 | US4913775 Production of paper and paper board |
| 04/03/1990 | US4913774 Reinforced thermoplastic material and process of preparation |
| 03/27/1990 | US4911790 Adding cationic, high molecular weight polysaccharides |
| 03/27/1990 | US4911184 Smoking articles |
| 03/22/1990 | WO1990002837A1 Process for controlling pitch deposits in the pulp and papermaking process |
| 03/21/1990 | EP0359615A1 Manufacture of superabsorbent composite structures |
| 03/21/1990 | EP0359552A2 Polysilicate microgels as retention/drainage aids in papermaking |
| 03/21/1990 | EP0358996A2 Controlling pitch deposits in the pulp and papermaking processes |
| 03/20/1990 | US4910066 Applying anionic acrylic copolymer and water; drying |
| 03/20/1990 | US4909902 Alkali metal Kurrol's salt as a paper pulp draining aid |
| 03/14/1990 | EP0358313A1 Method for producing an article containing a radiation cross-linked polymer and the article produced thereby |
| 03/14/1990 | EP0357866A2 Cationic sizing agent for paper |
| 03/13/1990 | US4908339 Flexible glass |
| 03/13/1990 | US4908229 Method for producing an article containing a radiation cross-linked polymer and the article produced thereby |
| 03/13/1990 | US4908100 Adding blend of acrylamide with acrylic or methacrylic acid |
| 03/13/1990 | CA1266730A1 Papermaking aid |
| 03/07/1990 | EP0357574A2 A process for the production of paper |
| 03/07/1990 | EP0357474A1 Water absorbent fiber web |
| 03/07/1990 | EP0357359A2 Improvements relating to smoking articles |
| 03/06/1990 | CA1266404A1 Process for preparation of water absorptive composite material |
| 02/28/1990 | EP0356406A1 Process for preparaton of an acid resistent coating on filler particles |
| 02/28/1990 | EP0355816A2 Colloidal alumina as a paper retention aid |
| 02/28/1990 | EP0355521A2 Composite pigments or fillers and methods for the preparation of same |
| 02/28/1990 | EP0355094A1 Procedure for manufacturing lignocellulosic material products. |
| 02/27/1990 | US4904727 Emulsion polymers |
| 02/22/1990 | WO1990001521A1 Degradable thermoplastic from lactides |
| 02/21/1990 | EP0232299B1 Fixation of polymers retaining liquids in a porous structure |
| 02/20/1990 | US4902729 Synthetic alkali metal alumino-silicates, methods and uses, compositions and their methods of preparation |
| 02/20/1990 | US4902657 Catalysts, extenders, fillers |
| 02/20/1990 | US4902568 Recording medium and recording method by use thereof |
| 02/20/1990 | US4902382 Process for producing a neutral paper |
| 02/14/1990 | EP0354889A2 A method of controlling microbiological deposits on paper making equipment and paper obtained thereby |
| 02/14/1990 | CN1039607A Sizing composition, method for preparation thereof and method of use |
| 02/13/1990 | US4900620 Ink jet recording sheet |
| 02/13/1990 | CA1265776A1 Sheet-like, oxygen-scavenging agent |
| 02/13/1990 | CA1265712A1 Impregnated corrugated sheets for packing boxes and method of manufacture |
| 02/06/1990 | US4898788 Decorative laminated sheet and decorative overlaid plywood faced with thermosetting resin |
| 01/31/1990 | EP0353212A1 A sizing composition, a method for the preparation thereof and a method of use |
| 01/31/1990 | EP0352930A1 Pressure-sensitive copying paper |
| 01/25/1990 | WO1990000609A1 Cellulose binding fusion proteins |
| 01/24/1990 | EP0351663A2 Emulsion polymers |
| 01/23/1990 | US4895759 Saturating grade paper |
| 01/23/1990 | US4895622 Press felt conditioner for neutral and alkaline papermaking systems |
| 01/23/1990 | US4895621 Water soluble thermosetting resin, process for its production, paper sizing composition and paper sizing process |
| 01/17/1990 | EP0351397A2 Use of a polyamide-polyamine-epichlor hydrine precondensate as an impregnation agent for paper |
| 01/17/1990 | EP0350834A2 Surface treatment agent for paper |
| 01/17/1990 | EP0350668A2 Starch blends useful as external paper sizes |
| 01/16/1990 | US4894119 Retention and/or drainage and/or dewatering aid |
| 01/10/1990 | EP0350277A2 Temporary wet strength resins and paper products containing same |
| 01/10/1990 | EP0350276A2 Temporary wet strength resins with nitrogen heterocyclic nonnucleophilic functionalities and paper products containing same |
| 01/10/1990 | EP0349935A2 Aqueous solutions of polyamidoamine-epichlorhydrine resines, process for preparing the same and use |
| 01/10/1990 | CN1038678A Process for production of paper |
| 01/09/1990 | US4892620 Sizing agent for paper |
| 01/09/1990 | US4892590 Precipitated calcium carbonate-cationic starch binder as retention aid system for papermaking |
| 01/09/1990 | CA1264315A1 Synthetic calcium silicates, methods of preparation and uses |
| 01/03/1990 | EP0349311A2 Pitch control |
| 01/03/1990 | CN1006315B High extender paper-making process using grass, wood pulp as fibric material |
| 12/28/1989 | WO1989012661A1 Paper making process |
| 12/27/1989 | EP0348366A2 A process for the production of paper |
| 12/27/1989 | EP0348127A2 Process for sizing paper and similar products |
| 12/26/1989 | US4889594 Flocculating with inorganic filler and retention agent, anionic or cationic |