| 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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| 11/18/1980 | US4234381 Fibrous material made with polymers stabilized by polymerizable vinyl benzyltrialkyl ammonium salt surfactant |
| 11/18/1980 | US4234378 Magnetoplubite barium or strontium ferrite, cationic polyelectrolyte, anionic polymer latex |
| 11/18/1980 | CA1089850A1 Starch ether derivatives and a method for the preparation thereof |
| 11/12/1980 | EP0018961A2 Carrier material |
| 11/11/1980 | US4233417 Wet strength polymers |
| 11/11/1980 | US4233411 Cationic polymeric composition for imparting wet and dry strength to pulp and paper |
| 10/29/1980 | EP0018086A1 Process of preventing retrogradation in cooked starch and use of the obtained starch |
| 10/29/1980 | EP0018007A1 Inverted paper sizing agent and process for its manufacture |
| 10/29/1980 | EP0017793A2 Use of an uncoated papersheet in the rotogravure process |
| 10/28/1980 | US4230525 Process for improving qualities of paper |
| 10/21/1980 | US4229330 Process for producing phenolic resins |
| 10/16/1980 | WO1980002147A1 Process for producing rosin series aqueous suspension sizing agent |
| 10/15/1980 | EP0017634A1 A solid flocculating agent, a method for its manufacture and its use |
| 10/15/1980 | EP0017598A1 Process for treating paper and cardboard, and products obtained |
| 10/15/1980 | EP0017364A1 Radiation-curable allyl benzoylbenzoate copolymers, their use, products thereof, and methods of making these products |
| 10/15/1980 | EP0017353A1 Production of paper and paper board |
| 10/14/1980 | US4228277 Modified nonionic cellulose ethers |
| 10/01/1980 | EP0016659A1 Inorganic gels and ceramic papers, films, fibres and boards; processes for production thereof |
| 10/01/1980 | EP0016623A1 Water-soluble polymers containing quaternary ammonium groups, a process for their production and their use in improving the wet strength of cellulosic substrates |
| 10/01/1980 | EP0016534A1 Improvements in or relating to roof walkways |
| 09/30/1980 | US4225383 Highly filled sheets and method of preparation thereof |
| 09/30/1980 | CA1086613A1 Selected stripping of metals |
| 09/23/1980 | US4224103 Bonding composition for incombustible fibrous materials |
| 09/16/1980 | US4222921 Polyamine/epihalohydrin reaction products |
| 09/16/1980 | US4222821 Treatment with viscose, a polyamide-epihalohydrin resin, and a cationic polyethylene imine resin |
| 09/16/1980 | US4222820 Paper sizing agents |
| 09/16/1980 | CA1085564A1 Methods of making combined titanium dioxide and calcium carbonate and opaque paper containing the resulting combination |
| 09/16/1980 | CA1085556A1 Starch blend process of sizing paper therewith and product thereof |
| 09/09/1980 | US4221886 Agent for surface-sizing papers with maleic anhydride copolymers |
| 09/03/1980 | EP0015090A1 Method of and composition for sizing and fire proofing paper and paper made by the method |
| 09/03/1980 | EP0015028A1 Copolymers that contain hydroxylic groups, process for their preparation and their use as paper sizing compositions |
| 09/03/1980 | EP0014891A1 Process for preparing impregnating resins |
| 09/03/1980 | EP0014767A1 Acrylyl or methacrylyl ureas containing quaternary groups and process for their preparation |
| 09/02/1980 | CA1084801A1 Rosin dispersions of improved stability |
| 08/26/1980 | US4219382 Cationic fortified rosin size |
| 08/26/1980 | CA1084317A1 Transfer and adherence of relatively dry paper web to a rotating cylindrical surface |
| 08/26/1980 | CA1084213A1 N-sulfohydrocarbon-substituted acrylamide polymers as formation aids for non-woven stock |
| 08/26/1980 | CA1084212A1 Method of making sized paper |
| 08/20/1980 | EP0014520A1 Method of sizing paper |
| 08/19/1980 | US4218286 Paper having good absorbency and alkali resistance and method of making said paper |
| 08/19/1980 | CA1084187A1 Process for preparing cross-linked starches |
| 08/19/1980 | CA1083759A1 Process of preparing size |
| 08/12/1980 | US4217425 Paper fiber additive containing polyacrylamide blended with glyoxal and polymeric diallyldimethyl ammonium chloride as a cationic regulator |
| 08/12/1980 | CA1083742A1 Stabilized mannich-base substituted water-in-oil polymer dispersions |
| 08/06/1980 | EP0013969A1 Process for producing a paper having a high dry-strength and a low wet-strength |
| 08/06/1980 | EP0013698A1 Process for the production of reinforced, resin-impregnated sheets by saturation of a fibrous web, and sheets so obtained |
| 07/29/1980 | US4215175 Non-woven fibers coated with a polymer of ethylenically unsaturated blocked aromatic diisocyanates |
| 07/29/1980 | US4214948 Method of sizing paper |
| 07/29/1980 | US4214908 Quanternary ammonium sulfonic acid type amphoteric surfactant |
| 07/29/1980 | CA1082561A1 Process for preparing stable aqueous dispersions of rosin-base material |
| 07/29/1980 | CA1082404A1 Latices for use in fiber dispersions |
| 07/23/1980 | EP0013416A1 Process for the preparation of alpha-beta unsaturated N-substituted carboxylic acid amides, alpha-beta unsaturated N-substituted carboxylic acid amides and their use for preparing ion exchangers |
| 07/22/1980 | US4213885 Bonding agent for sheet-formed fibre products |
| 07/15/1980 | US4212783 Reaction product of acid treated hydrocarbon distillate and maleic anhydride; saponification |
| 07/15/1980 | US4212704 Composition and production process for Fourdrinier fiberboard |
| 07/15/1980 | CA1081897A1 Paper size |
| 07/15/1980 | CA1081578A1 Process for removing foam from aqueous systems |
| 07/09/1980 | EP0013267A1 Method of making laminated products |
| 07/09/1980 | EP0012775A1 Process for pulping ligno-cellulosic material |
| 07/08/1980 | CA1081255A1 Stable substituted acrylamides or methacrylamides |
| 07/01/1980 | US4210763 Water-soluble acid addition or quaternary ammonium salts useful in eliminating or preventing the brightening effects of anionic optical brighteners |
| 07/01/1980 | US4210685 Phosphorus acid reactant |
| 07/01/1980 | US4210490 Cationic starch, kaolinic clay filler and celluloseic fibers |
| 07/01/1980 | US4210489 Method of imparting wet strength to paper products |
| 06/25/1980 | EP0012546A2 Process for the manufacture of composite materials and composite materials obtained by said process |
| 06/25/1980 | EP0012542A1 Method of making heat curable adhesive coated insulation for transformers |
| 06/25/1980 | EP0012249A1 Modified melamine-formaldehyde resin, method for its preparation and its application |
| 06/24/1980 | US4209429 Reacintg with epoxidized vegetable oil |
| 06/17/1980 | US4208504 Adhesive repellent coatings and substrates coated therewith |
| 06/17/1980 | CA1079730A1 Allyl esters of n-alkyl-omega-(alkyleneureido) amic acids and their synthesis |
| 06/10/1980 | US4207379 Substrate web coated with a thermosetting coating resin |
| 06/10/1980 | US4207378 Expanded styrene-polymers and polyolefin micro-bits and their preparation |
| 06/10/1980 | US4207223 Paper sizing agents |
| 06/10/1980 | US4207142 Paper sizing agents |
| 06/10/1980 | CA1079010A1 Process for preventing the separation of resins in paper making |
| 05/29/1980 | WO1980001053A1 Oil-modified resole compositions and laminates made therefrom |
| 05/28/1980 | EP0011532A1 Fluorinated products intended for oil- and waterproofing treatments of various substrates and process for their preparation |
| 05/28/1980 | EP0011488A1 Heat bonded paper |
| 05/28/1980 | EP0011303A2 Starch-sized paper |
| 05/20/1980 | US4204030 Organopolysiloxane sized paperboards for gypsum wallboards |
| 05/20/1980 | US4203776 Aqueous fortified rosin dispersions |
| 05/20/1980 | CA1077946A1 Treatment of cellulosic materials |
| 05/13/1980 | CA1077637A1 Flocculating agent comprising water-in-oil emulsion of h-active polymer carrying formaldehyde and amine radicals |
| 05/13/1980 | CA1077317A1 Treated gypsum wallboard paper |
| 04/29/1980 | US4200679 Micro-bits of expanded flexible polyurethanes |
| 04/29/1980 | US4200562 Sizing agent for use in making paper |
| 04/29/1980 | US4200559 Anionic paper surface sizing agent |
| 04/29/1980 | US4200489 Process for producing sized paper or cardboard with dyes or optical brighteners and epoxide-amine-polyamide reaction products |
| 04/22/1980 | USRE30259 Water-soluble thermosetting resins and use thereof |
| 04/22/1980 | US4199643 Water-insoluble copolymers containing amide-polyaldehyde thermosettable system |
| 04/22/1980 | US4199369 Sizing paper; ethylene oxide sulfate dispersant |
| 04/22/1980 | CA1075944A1 Filled paper |
| 04/15/1980 | US4198269 Quaternary ammonium salts of epihalohydrin polymers as additives for fibrous cellulosic materials |
| 04/15/1980 | US4198267 Drying |
| 04/08/1980 | US4196559 Swellable fabrics for ceiling structures |
| 04/08/1980 | CA1075141A1 Thin, tough, stable laminate |
| 04/02/1980 | EP0009185A1 Low-foaming surface sizing agents for paper |
| 04/01/1980 | CA1074684A1 Thin, tough, stable, mar-resistant laminate |
| 04/01/1980 | CA1074508A1 Process for sizing cellulose fibres |
| 04/01/1980 | CA1074507A1 Process for sizing cellulose fibres |