| 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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| 05/26/1981 | CA1101850A1 Xanthated starch amine paper additives |
| 05/26/1981 | CA1101609A1 Mineral fillers |
| 05/20/1981 | EP0028776A1 Process for releasing laminates |
| 05/20/1981 | EP0028729A1 Process for the continuous production by the paper-making technique of thin porous foils, and products obtained |
| 05/19/1981 | US4268352 Method of reducing soluble starch in broke repulping using a dual polymer combination |
| 05/19/1981 | CA1101158A1 Strengthening agents |
| 05/19/1981 | CA1101157A1 Semisynthetic paper structure on a urea basis |
| 05/12/1981 | US4267240 Said sheet comprising paper sized with a metal salt and coated with an alginate mixture containing either a triglyceride or lecithin |
| 05/12/1981 | US4267099 Using a di(alkylenebenzene)phenoxypolyoxyethylene sulfate salt as a dispersant |
| 05/12/1981 | US4267059 Auxiliary for improving retention, dewatering and working up, particularly in the manufacture of paper |
| 05/12/1981 | CA1101146A2 Blends of cationic and anionic nitrogen-containing polymers for treating papermaking polyolefin fibers |
| 05/05/1981 | US4265704 Method of dispersing bundles of glass fibers for making glass fiber mats by the wet-laid process |
| 05/05/1981 | CA1100689A1 Process for the preparation of cationic paper sizing agents |
| 05/05/1981 | CA1100269A1 Creping paper using cationic water soluble polymer |
| 05/05/1981 | CA1100265A1 Sizing method and a sizing composition for use therein |
| 05/05/1981 | CA1100264A1 Sizing method and sizing composition for use therein |
| 04/29/1981 | EP0027706A1 Latex bound non-asbestos paper |
| 04/29/1981 | EP0027705A1 Starch bound non-asbestos paper |
| 04/28/1981 | US4264516 Quaternary ammonium salts of antistatic agents or softening agents containing fatty acid radicals, process for the production and use thereof |
| 04/28/1981 | CA1099859A1 Pulp and papermaking additive |
| 04/21/1981 | US4263182 Cationic starch dispersant, anionic surfactant |
| 04/21/1981 | US4263094 Waterproofing |
| 04/21/1981 | US4263093 Method for retaining textured surface of pressed ceiling board |
| 04/16/1981 | WO1981001007A1 Amphoteric water-in-oil self-inverting polymer emulsion |
| 04/15/1981 | EP0026841A1 Storage-stable polyacrylate modified melamine resin solution, process for its preparation and its use |
| 04/08/1981 | EP0026483A2 Copolymer of maleic anhydride, dicyclopentadiene and vinyl cyclohexene and its use as an anionic paper surface sizing agent |
| 04/08/1981 | EP0026313A1 Water dispersible, radiation cross-linkable urethane acrylate binders, process for their preparation, as well as the use of these binders in aqueous dispersion in the field of coating paints, printing inks and textiles |
| 04/07/1981 | USRE30568 Containing barium, magnesium and/or calcium |
| 04/07/1981 | US4260738 For use in papermaking |
| 04/07/1981 | CA1098687A1 Brown cigarette wrappers |
| 04/07/1981 | CA1098659A1 Emulsions of resinic acid isocyanates as sizing agents for paper |
| 04/07/1981 | CA1098658A1 Use of chitosan in corrugating medium |
| 04/07/1981 | CA1098655A1 Low ph preparation of cationic starches and flours |
| 04/01/1981 | EP0026157A2 Quaternary ammonium salts from diepoxydes and diamines, their preparation and their use |
| 04/01/1981 | EP0026091A1 Method for manufacture of sized paper |
| 04/01/1981 | EP0025979A1 Aqueous solution or dispersion of a styrene-maleic acid anhydride copolymer, process for its preparation and its use |
| 03/31/1981 | CA1098523A1 Cationic polymer flocculant |
| 03/27/1981 | EP0018995A4 Oil-modified resole compositions process for making the same and laminates made therefrom. |
| 03/25/1981 | EP0025515A1 Use of nitrogen containing condensation products as retention agent, flocculating agent and drainage accelerator in paper production |
| 03/25/1981 | EP0025463A1 Composition for use with papermaking fillers and methods of preparing filler and papermaking therewith |
| 03/18/1981 | EP0025142A1 Polyquaternary ammonium compounds, their preparation, their use in paper manufacturing and paper treating agents containing them |
| 03/17/1981 | US4256801 Also comprising cellulose fibers, oil-resistant elastomer sizing, and graphite and diatomaceous earth particles; car transmissions, clutches, and brakes |
| 03/17/1981 | CA1097639A1 Quaternary ammonium salts of antistatic agents or softening agents containing fatty acid radicals, process for the production and use thereof |
| 03/17/1981 | CA1097467A1 Mineral fillers |
| 03/03/1981 | US4254255 Aqueous reaction of polyamine with alkylene dihalide in presence of emulsifier |
| 03/03/1981 | US4254187 Paper plies impregnated with oil modified phenolic resole varnish |
| 02/24/1981 | CA1096540A1 GLYOXAL MODIFIED POLY(.beta.-ALANINE) STRENGTHENING RESINS FOR USE IN PAPER |
| 02/18/1981 | EP0024034A1 Highly maleated wax and process for producing the same |
| 02/17/1981 | US4251651 Paper additive, flocculant, dehydrating agent |
| 02/17/1981 | US4251402 Polyester-starch sized paper, sizing composition, and process therefor |
| 02/17/1981 | CA1096080A1 Water-soluble dispersions of high molecular weight water-soluble polymers |
| 02/17/1981 | CA1095691A1 Process for converting waste dead-burned magnesium oxide-containing material into useful product |
| 02/10/1981 | US4250299 Retention agents and drainage accelerators for papermaking |
| 02/10/1981 | US4250298 Polyamines containing amide groups |
| 02/10/1981 | US4250282 Melamine resin, process for its manufacture and its use for the manufacture of coated wood-based materials and laminates |
| 02/10/1981 | US4250269 Water-soluble mixtures of quaternary ammonium polymers, nonionic and/or cationic vinyl-addition polymers, and nonionic and/or cationic surfactants |
| 02/10/1981 | US4250212 Wet strength paper additives |
| 02/10/1981 | US4250112 Polyalkylenepolyamines containing quaternary dialkylammonium groups |
| 02/10/1981 | US4250069 With urea and aliphatic hydroxymonoamine; water soluble, cationic |
| 02/05/1981 | WO1981000268A1 Sheet products and preparation process thereof |
| 02/05/1981 | WO1981000267A1 Accelerated pulping process |
| 02/03/1981 | US4248664 Fibrous sheet materials |
| 01/28/1981 | EP0022881A1 Accelerated pulping process |
| 01/27/1981 | US4247433 Process for the preparation of thermosettable urea-formaldehyde resins and method for use thereof |
| 01/27/1981 | CA1094280A1 Sheet type wallcovering or ceiling covering |
| 01/20/1981 | US4246066 Heating vinyl chloride or vinylidine chloride latex, adding water soluble cationic polymer or polyvalent metal salt to flocculate |
| 01/20/1981 | CA1093789A1 Precipitated siliceous products and methods for their use and production |
| 01/20/1981 | CA1093767A1 Preparation of a wax-containing paper sheet |
| 01/20/1981 | CA1093766A1 Casing paper having alkali resistance |
| 01/13/1981 | US4245025 Transfer sheet and process for preparation thereof |
| 01/13/1981 | US4244990 Preimpregnation with urea resin |
| 01/13/1981 | US4244598 Adjusting mechanism for ski bindings |
| 01/13/1981 | CA1093749A1 Expanded styrene-polymers and polyolefin micro-bits and their preparation |
| 01/07/1981 | EP0021588A1 No overlay decorative laminates coated with melamine-formaldehyde resin and methods for producing the same |
| 01/07/1981 | EP0021265A1 Polyamines containing urea groups, their preparation and use as retention means, and compositions containing them |
| 01/07/1981 | EP0020884A1 Manufacture of flat flexible products based on mineral fibres |
| 01/06/1981 | US4243481 Paper reactive size, anhydrides, ketene dimer, isocyanates; cationic polymer promoters |
| 01/06/1981 | US4243479 Novel starch ether derivatives, a method for the preparation thereof and their use in paper |
| 01/06/1981 | US4243461 Process for releasing laminates |
| 01/06/1981 | CA1093236A1 Additive composition for use in papermaking |
| 12/30/1980 | US4242408 Easily disposable non-woven products having high wet strength at acid pH and low wet strength at base pH |
| 12/30/1980 | CA1092744A1 Modified aminoplast compositions and use thereof |
| 12/23/1980 | US4240935 Ketene dimer paper sizing compositions |
| 12/23/1980 | US4240870 Calcium carbonate |
| 12/23/1980 | CA1091870A1 Compositions pitch control |
| 12/16/1980 | US4239592 Starch blend, process of sizing paper therewith, and product thereof |
| 12/16/1980 | US4239548 Titanium dioxide pigment |
| 12/16/1980 | US4239519 Inorganic gels and ceramic papers, films, fibers, boards, and coatings made therefrom |
| 12/16/1980 | US4239077 Ultraviolet radiation sensitive photoinitiator and a polymerizable monomer on a paper sheet |
| 12/11/1980 | WO1980002655A1 No-overlay decorative laminates |
| 12/10/1980 | EP0020316A1 Surface-modified pigment of natural kaolin material and a process of producing same |
| 12/10/1980 | EP0020004A1 Laminates containing lignosulfonate-extended phenolic resins and process for manufacturing same |
| 12/10/1980 | EP0019753A1 Impregnation agent for cellulosic materials |
| 12/09/1980 | US4238283 Post-treatment of humic acid-dyed paper |
| 12/02/1980 | US4237185 Cellulose, acrylate monomer and oligomer |
| 12/02/1980 | CA1090511A1 Method for controlling canadian standard freeness in fiber slurry beater addition |
| 11/26/1980 | EP0018995A1 Oil-modified resole compositions process for making the same and laminates made therefrom |
| 11/25/1980 | US4235982 Polymeric fillers for paper |
| 11/25/1980 | US4235856 Method of producing a zeolite of controlled particle size |
| 11/25/1980 | CA1090061A1 Process of making paper |