| Patents for D21H 21 - Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties (20,755) |
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| 04/21/1981 | US4263182 Cationic starch dispersant, anionic surfactant |
| 04/07/1981 | US4260391 Lithium salt formation, dyeing (regenerated) cellulose |
| 04/07/1981 | CA1098687A1 Brown cigarette wrappers |
| 04/01/1981 | EP0026157A2 Quaternary ammonium salts from diepoxydes and diamines, their preparation and their use |
| 03/31/1981 | US4259386 Screen printing foamable composition on woodchip paper |
| 03/25/1981 | EP0025480A1 Flameproofing agent for paper and carboard, and its use |
| 03/24/1981 | CA1098120A1 Azo compounds and preparation thereof |
| 03/10/1981 | US4255327 Trisazo dyes, diazotization of aminobenzene or naphthylamine compounds, coupling to m-phenylenediamine sulfonic acid |
| 03/04/1981 | EP0024321A2 Cationic azo dyestuffs, their preparation, their use in colouring paper and compositions containing them |
| 03/03/1981 | US4254025 Disazo and polyazo dyestuffs |
| 02/18/1981 | EP0023991A1 Styryl dyestuffs, their preparation and their use in dyeing paper in particular |
| 02/17/1981 | US4251440 For printing or dyeing |
| 02/17/1981 | US4251351 Processing of calcium carbonate minerals |
| 01/27/1981 | US4247318 Process for making security paper from film-fibril sheets |
| 01/20/1981 | US4246066 Heating vinyl chloride or vinylidine chloride latex, adding water soluble cationic polymer or polyvalent metal salt to flocculate |
| 01/14/1981 | EP0022209A2 Fluor-triazine dyestuffs and their use in dyeing cellulosic fibrous materials |
| 01/13/1981 | US4244933 Calcium carbonate particles and processes for preparing same |
| 01/07/1981 | EP0021350A1 Method for verifying paper currency having a security means and paper currency having such means |
| 01/07/1981 | EP0021124A1 Electrostatic masters |
| 12/30/1980 | CA1092737A1 Starch/latex cast coatings for paper |
| 12/30/1980 | CA1092736A1 Starch/latex cast coatings for paper |
| 12/23/1980 | CA1091870A1 Compositions pitch control |
| 12/16/1980 | US4239646 Microspheric opacifying agents and method for their production |
| 12/16/1980 | US4239542 Water-soluble flame retarder and process for preparing the same |
| 12/16/1980 | CA1091632A1 Processing of calcium carbonate minerals |
| 12/10/1980 | EP0019997A1 Cationic alpha-cyano cinnamoyl dyes, their use and coloured paper dyed therewith |
| 11/26/1980 | EP0019191A1 Security paper |
| 11/25/1980 | US4235982 Polymeric fillers for paper |
| 11/25/1980 | US4235806 Cationic α-cyano-p-(N-benzyl-N-ethylamino)cinnamoyl dyes |
| 11/25/1980 | US4235741 Optical brighteners of 2,4-bis-(stilben-4'-yl)-v-triazoles |
| 11/25/1980 | CA1090054A1 Reactive dyeing system and xylylene diphosphonic acid dyes |
| 11/11/1980 | US4233411 Cationic polymeric composition for imparting wet and dry strength to pulp and paper |
| 11/04/1980 | CA1088816A1 Heat resistant paperboard product |
| 10/29/1980 | EP0017831A1 Azo-triazine-azo dyestuffs and their use in dyeing paper |
| 10/28/1980 | CA1088258A1 Stable concentrated liquid preparation of a paper dye of the disazo class |
| 10/28/1980 | CA1088257A1 Stable concentrated liquid preparation of paper dyes of the disazo class |
| 10/28/1980 | CA1088256A1 Stable concentrated liquid preparation of a paper dye of the copper phthalocyanine class |
| 10/15/1980 | EP0017353A1 Production of paper and paper board |
| 10/15/1980 | EP0016857A1 Microbicidal agent and application thereof |
| 10/01/1980 | EP0016726A2 Basic or quaternised azodyestuffs of the 2-(4'-azophenyl) benzothiazole series, process for their preparation and their use in dyeing and printing textile material, paper and leather |
| 09/30/1980 | CA1086763A1 Organobromosilicone fluids |
| 09/23/1980 | US4224169 Flame retardant compositions and method of preparing same |
| 09/23/1980 | US4224103 Bonding composition for incombustible fibrous materials |
| 09/23/1980 | US4224025 Process for the dyeing and printing of paper materials in different hues using a single coupling component |
| 09/17/1980 | EP0015511A2 Use of oligo- or polymeric compounds in dyeing lignin-free paper material |
| 09/16/1980 | US4223144 For paper in red and violet shades |
| 09/16/1980 | US4222921 Polyamine/epihalohydrin reaction products |
| 09/16/1980 | US4222901 Diallyldimethylammonium chloride and acrylamide copolymer |
| 09/09/1980 | US4221562 Quaternary ammonium substituted, with glutaraldehyde or glyoxal, for printing cellulose |
| 09/02/1980 | CA1084654A1 Process for obtaining mineral fillers based on calcic aluminate hydrates, aluminous cement or portland cement |
| 08/26/1980 | CA1084317A1 Transfer and adherence of relatively dry paper web to a rotating cylindrical surface |
| 08/20/1980 | EP0014677A2 Basic monoazo dyes of the bis-benzothiazole-azobenzene series, process for their preparation and their use in dyeing and printing textiles, paper, leather and in preparing inks |
| 08/20/1980 | EP0014407A1 Dye solutions, their preparation and their use for colouring paper |
| 08/12/1980 | US4217425 Paper fiber additive containing polyacrylamide blended with glyoxal and polymeric diallyldimethyl ammonium chloride as a cationic regulator |
| 08/12/1980 | US4217272 Dyeing cellulosic fibers |
| 08/12/1980 | CA1083435A1 Enhancing flame retardancy with organobromosilicone fluids |
| 08/06/1980 | EP0014180A1 Stable concentrated solution of a disazo dye, process for its preparation and use of this solution |
| 08/06/1980 | EP0013899A2 Basic dyestuffs and their use in dyeing paper |
| 08/06/1980 | EP0013751A2 Use of quaternised compounds in dyeing paper |
| 08/05/1980 | US4216055 Electrostatic recording material and the method of preparing it |
| 07/22/1980 | US4213897 For dyeing paper |
| 07/15/1980 | US4212763 Bis-triazinylaminostilbene compounds and their use as fluorescent brightening agents |
| 07/09/1980 | EP0013066A1 Polymers with improved solvent holdout in electroconductive paper and electroconductive recording paper and electroconductive coating colour formulations containing them |
| 07/08/1980 | CA1080958A1 Electroconductive resins and intermediates and electroconductive coated paper |
| 07/01/1980 | US4210488 Process for improving the dry strength of paper and for improving the effect of optical brighteners in the preparation or coating of paper |
| 07/01/1980 | CA1080409A1 Compositions for pitch control |
| 06/25/1980 | EP0012517A1 Electroconductive articles and a method of preparing them |
| 06/25/1980 | EP0012300A2 Coloured polymeric compounds, process for their preparation and their application to the dyeing of paper |
| 06/10/1980 | CA1079010A1 Process for preventing the separation of resins in paper making |
| 05/28/1980 | EP0011532A1 Fluorinated products intended for oil- and waterproofing treatments of various substrates and process for their preparation |
| 05/28/1980 | EP0011486A1 Electroconductive resin coatings for recording paper with improved solvent holdout properties and papers coated with them |
| 04/29/1980 | US4200489 Process for producing sized paper or cardboard with dyes or optical brighteners and epoxide-amine-polyamide reaction products |
| 04/15/1980 | US4198268 Process for producing colored paper using granulated dye compositions |
| 04/15/1980 | US4198203 Dyestuff solutions of copper phthalocyanine derivatives for paper dyeing |
| 04/08/1980 | US4196559 Swellable fabrics for ceiling structures |
| 04/01/1980 | CA1074602A1 Process for making soft, high bulk, low density, finely creped sheets |
| 03/25/1980 | CA1074304A1 Bleedfast phthalocyanine dyes for paper |
| 03/18/1980 | CA1073611A1 Dyestuff preparations and processes for their production |
| 03/11/1980 | US4192712 Combined breaker size press coater |
| 03/11/1980 | CA1073462A1 Cationic alpha-cyano-p-dimethyl aminocinnamoyl dyes |
| 02/26/1980 | US4190491 Process for controlling pitch in papermaking |
| 02/19/1980 | US4189589 Phenyl-benzimidazolyl-furanes |
| 02/19/1980 | US4189345 Fibrous compositions |
| 02/12/1980 | CA1071517A1 Composite sheet material for use in covering walls, and a method of manufacturing same |
| 02/05/1980 | US4187226 1-(alkoxyalkylsulfonylphenyl/-3-phenylpyrazolines, optical brighteners |
| 02/05/1980 | US4187142 Method for forming high strength composites |
| 02/05/1980 | US4186943 Security devices |
| 02/05/1980 | CA1071345A1 Polyalkylene monoammonium phosphate-diammonium phosphate fire retardant for cellulosic substrates |
| 01/22/1980 | US4185151 Cationic dyestuffs |
| 01/22/1980 | US4184969 Fire- and flame-retardant composition |
| 01/22/1980 | US4184914 Foam coating of paper employing a hydrolyzed protein foaming agent |
| 01/22/1980 | US4184912 Pitch control method |
| 01/22/1980 | CA1070182A1 Vesiculated silica microspheres containing inorganic pigment |
| 01/15/1980 | US4183989 Security papers |
| 01/09/1980 | EP0006390A1 Process of forming a fibrous web by the papermaking technique in order to improve the binding and retention, web obtained by this process and its use as a substitute material for asbestos products and as a printing or writing support |
| 12/18/1979 | CA1068263A1 Disazo dyestuffs |
| 12/12/1979 | EP0005905A1 Aminoplast resin particles, a process for their manufacture and their use in paper products |
| 11/27/1979 | CA1067070A1 Azo dyestuffs |
| 11/13/1979 | CA1066271A1 Disazo compounds |
| 10/23/1979 | CA1064914A1 Monoazo and disazo colorants |