Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21H - Pulp compositions; Preparation thereof not covered by subclasses ,; Impregnating or coating of paper; Treatment of finished paper not covered by class or subclass; Paper not otherwise provided 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
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)
05/1982
05/12/1982EP0051187A2 Cationic styryl dyes, their preparation and their use in dying basic dyeable natural or synthetic substrates
05/12/1982EP0051144A1 Small-particles polymer dispersions containing polymerised nitrogen-containing monomers
05/11/1982CA1123194A2 Surface treatment of paper webs
05/04/1982US4328265 Thermoplastic acrylic resin and a reactive thermosetting resin
05/04/1982US4328142 Preparation of water-soluble condensates and their use as crosslinking agents for the preparation of papermaking aids
05/04/1982US4328069 Imidazoline ring containing polymer salts
04/1982
04/28/1982EP0050223A1 Process for preparing high wet-strength paper
04/20/1982US4326000 Sanitary paper
04/20/1982CA1122205A1 Direct black dye
04/14/1982EP0049672A1 Coated papers and cardboards, and process for manufacturing them
04/06/1982US4323362 Dyed paper
03/1982
03/23/1982CA1120212A1 Process for producing sized paper or cardboard with dyes or optical brighteners and epoxide-amide-polyamide reaction products
03/10/1982EP0046904A1 Decay resistant sheet material with retained flexibility
03/09/1982CA1119358A1 Post-treatment of humic acid-dyed paper
02/1982
02/16/1982US4315798 A metal quinolinate within a binder
02/16/1982CA1118165A1 High strength composites and a method for forming
02/09/1982US4314816 Direct blue dyes from the condensation of diaminostilbenedisulfonic acid with N-alkyl or N-hydroxyalkyl-8-amino-1-naphthol-3,6-disulfonic acid
02/02/1982US4314001 Novel polymeric compounds, processes and methods of use
02/02/1982US4313790 Additives for increased retention and pitch control in paper manufacture
02/02/1982CA1117384A1 Surface treatments
01/1982
01/27/1982EP0044695A2 Blends of algin, tamarind, and a polycationic electroconductive polymer
01/26/1982CA1116851A1 Surface treatment of paper webs
01/19/1982US4311809 Water-insoluble cationic addition graft polymers; opaque paper fillers
01/13/1982EP0043792A2 Dyeing paper
01/13/1982EP0043790A1 Process for increasing or improving the whitening effect during the optical brightening of coating compositions
01/12/1982US4310591 Security paper from film-fibril sheets
01/12/1982US4310360 Method for producing pigment for use in sizing compositions
01/07/1982WO1982000038A1 Cellulose-treating agent and paper products sized therewith
12/1981
12/29/1981US4308092 Creping paper using cationic water soluble addition
12/15/1981US4305781 Production of newprint, kraft or fluting medium
12/10/1981WO1981003511A1 Paper security with authenticity mark
12/10/1981WO1981003510A1 Paper security with authenticity mark of luminescent material only in an invisible area of the light spectrum and checking method thereof
12/10/1981WO1981003509A1 Paper security with authenticity mark of luminescent material and method for the authentication thereof
12/10/1981WO1981003508A1 Paper security with authenticity mark of luminescent material and utilization method thereof
12/10/1981WO1981003507A1 Paper securities with authenticity mark of luminescent material
12/08/1981US4304626 Forming thin protective films by dissolving thermoplastic particles coated on a paper base sheet
12/08/1981US4304625 Using a polyvinyl acetate-ethylene copolymer emulsion and a water-soluble polyvinyl alcohol to retain the paper web on the drier; papermaking
12/08/1981CA1113661A1 Composite material
12/02/1981EP0041056A1 Papermaking
12/02/1981EP0041024A1 Security paper for avoiding forgery by employing ball-point pens with erasable ink
11/1981
11/24/1981US4302366 Telomerizing an organic thio acid with an ethylenically unsaturated compound
11/12/1981WO1981003179A1 Improvements in or relating to organic compounds
11/04/1981EP0038884A1 Method of making flexible wallcoverings and wallcoverings so made
11/03/1981CA1111844A2 Reactive dyeing system and xylylene diphosphonic acid dyes
11/03/1981CA1111606A1 Dyestuff solutions
10/1981
10/21/1981EP0038299A2 Cationic compounds
10/21/1981EP0038109A2 Agents and method for the protection of coatings and wood and other non-living organic substrates from deterioration by micro-organisms
10/20/1981US4296171 A neutralized acrylic acid-ester resin coating on a paper support
10/20/1981CA1111044A1 Phenyl-benzimidazolyl-furanes
10/20/1981CA1110964A1 Evaporative humidifier
10/20/1981CA1110844A1 Combined breaker size press coater
10/14/1981EP0037507A1 Identity card or document with integrated security thread
10/14/1981EP0037491A2 Dimethinic dyestuffs, their preparation and their use in dyeing synthetic and natural materials
10/06/1981US4293667 Organic pigments
10/06/1981US4293666 Organic pigments
10/06/1981US4293378 Enhanced wet strength filter mats to separate particulates from fluids and/or coalesce entrained droplets from gases
10/06/1981CA1110019A1 Process for manufacturing paper having improved dry strength
09/1981
09/15/1981US4289580 Heat seal fibrous web and method of its manufacture
09/15/1981US4289513 Activated sorbtion paper and products produced thereby
09/15/1981CA1109061A1 Salts of 1:2-metal-complex dyes free from sulphonic acid groups
09/02/1981EP0034895A2 Electrically conductive substrate with insulating coating and coating for same
09/02/1981EP0034725A2 Dyestuffs containing imidazolylethylene groups and their use
08/1981
08/26/1981EP0034527A1 Fluor copolymers, their application to the hydrophobic and oleophobic treatment of different substrates, and substrates thus treated
08/25/1981US4285861 Sulfonated naptho[1,2]triazole azo barbituric acid derivatives
08/25/1981CA1107462A1 Process for the dyeing of paper material
08/19/1981EP0033994A1 A method of checking the authenticity of papers
08/18/1981US4284759 Preparation of aminoplast resin particles
08/18/1981US4284546 Calcium carbonate pigment, styrene-acrylate latex
08/18/1981CA1107158A1 Transfer sheet and process for preparation thereof
08/18/1981CA1107005A1 Security paper
08/12/1981EP0033350A1 Method for the preparation of improved water and solvent resistant coated substrates
08/11/1981CA1106996A1 Cationization of starch utilizing alkali metal hydroxide, cationic water-soluble polymer and oxidant for improved wet end strength
08/05/1981EP0033104A2 Process for producing water-soluble condensation products and their use as cross-linking agents in producing aids for paper manufacture
08/04/1981US4282060 A cationic graft addition polymer; paper fillers; opacity
08/04/1981US4282000 Dyestuff solutions, their preparation and their use for dyeing paper
07/1981
07/28/1981US4281082 Fillers for paper, graft polymers of cationic amine monomers
07/22/1981EP0032483A2 Stable aqueous formulations of stilbene brighteners
07/21/1981US4279964 Froth coating of paper products and process for forming same
07/21/1981US4279661 Glossy paper coating, lacquer or paint
07/15/1981EP0031899A1 Self-crosslinking water-soluble reaction products, process for producing binding agents from such products, and use of the products to increase the wet strength of paper
07/14/1981CA1105176A1 Compositions comprising polyalkylenepolyamines and four-component inorganic salt fire retardant formulations
07/08/1981EP0031795A1 Hydroxyphenyl ketones
07/01/1981EP0031161A1 Antifalsification paper protected against faking and tampering
07/01/1981EP0031070A1 Cationic dyestuffs and their use in dyeing paper fabrics
06/1981
06/30/1981US4276339 Laminated foam-creped paper product and method of production thereof
06/30/1981CA1104294A1 Method of controlling pitch
06/23/1981CA1103697A1 Tranparentizing agent for paper
06/17/1981EP0030507A1 Security paper using a means for marking and recognition
06/03/1981EP0029714A1 Method of preventing erasure of an image and a booklet of security papers
06/02/1981US4271227 Poly-acrylate or-acrylamide monomer and polymerization catalyst impregnate cellulosic web
06/02/1981CA1102320A1 Bis-triazinylaminostilbene compounds, process for their preparation and their use as fluorescent brightening agents
05/1981
05/28/1981WO1981001430A1 Method of preventing erasure of an image and a booklet of security papers
05/28/1981WO1981001429A1 Heat seal fibrous web and method of its manufacture
05/12/1981US4267319 Colored polymeric compounds
05/06/1981EP0027997A1 Mineral filler, particularly calcium carbonate for paints and paper coatings
05/05/1981US4265703 Method of preparing a fibrous structure containing metallic fibers
05/05/1981CA1100269A1 Creping paper using cationic water soluble polymer
04/1981
04/29/1981EP0027698A2 Method of producing paper or coated paper carrying an unobtrusive image
04/28/1981US4264325 Phenyl-benzimidazolyl-furanes for optical brightening of organic materials
04/28/1981CA1099859A1 Pulp and papermaking additive
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