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)
12/1990
12/12/1990EP0380471A4 Nonwoven fabric-like product using a bacterial cellulose binder and method for its preparation
12/12/1990CN1047681A Dyed mineral pigments and applications
12/11/1990CA1277785C Flocculation processes
12/09/1990WO1990015190A1 Security paper for producing documents
12/09/1990CA2034000A1 Security paper for producing documents
12/05/1990EP0400902A2 Security paper
12/05/1990EP0400433A1 Double triphenylmethane dyes and piperazine derivatives
12/04/1990US4975499 Imparting wet strength to paper
12/04/1990US4975109 Bactericide, fungicide and algaecide
12/04/1990CA1277449C Flocculation processes
12/02/1990CA2018127A1 Security paper
11/1990
11/30/1990CA2016491A1 Doubled triphenylmethane dyes and piperazine derivatives
11/29/1990WO1990014441A1 Methods for tagging and tracing materials with nucleic acids
11/28/1990EP0399522A2 Creped tissue web and method of making same
11/28/1990CN1010599B Process for production of paper
11/27/1990US4973641 Polysaccharide graft copolymers containing reactive aminoethyl halide group
11/27/1990CA1276757C Composition for preparing paperboard container for liquids
11/27/1990CA1276756C Method of minimizing untoward effect of contaminants, such as pitch, in the papermaking operation
11/24/1990WO1990014309A1 Process for the preparation of purified calcium sulphate dihydrate by aqueous means
11/24/1990CA2033189A1 Process for preparation of purified calcium sulphate by aqueous medium
11/20/1990US4972000 Multilayer, crosslinked particles for coating compositions
11/20/1990CA1276414C Unfalsifiable safety paper, process for rendering a paper unfalsifiableand aqueous or organic composition useful for rendering a paperunfalsifiable
11/20/1990CA1276413C Papermaking process
11/15/1990WO1990013877A1 Security document with embedded security element with visually and mechanically verifiable distinguishing signs
11/15/1990WO1990013707A1 Papermaking size based on ketene dimer
11/13/1990US4970192 Pressure-sensitive copying paper
11/13/1990CA1276057C Storage stable paper size composition containing ethoxylated lanolin
11/08/1990DE3914378A1 Dyeing paper with basic azo dyestuff with good affinity and fastness - using phenyl oxadiazolyl benzene azo hydroxy-pyridone cpd. with amino-alkyl substit.
11/06/1990CA1275900C Fire resistant materials
11/06/1990CA1275899C Fire resistant materials
11/06/1990CA1275898C Fire resistant materials
10/1990
10/31/1990EP0395588A1 Dibenzofuranylbiphenyls
10/31/1990EP0395539A1 Process for obtaining a high-gloss base and the base so produced
10/31/1990EP0394368A1 A process for the production of paper.
10/31/1990EP0394319A1 Control of biological characteristics of material.
10/30/1990US4966796 Multilayer kraft paper laminate; exterior surface treated with insecticide
10/24/1990EP0393105A1 Sizing agent for paper
10/23/1990US4964955 Method of reducing pitch in pulping and papermaking operations
10/23/1990US4964954 Process for the production of paper
10/23/1990US4964952 Method of controlling pitch using a cationically modified tannin
10/23/1990US4964915 Hydrophobic cellulose-reactive sizing agent and cationic polymer comprising a starch
10/16/1990US4963586 2,2-dibromo-3-nitrilopropionamide and nitrobromopropane derivative; synergistic
10/16/1990US4963192 Process for the production of a pigment-based agent suitable for the paper and board industry and improving the printability of paper and board
10/10/1990EP0391542A2 Authenticating composition for authenticating security paper
10/10/1990EP0391170A1 Process for dyeing paper
10/10/1990EP0391076A2 Stabilized synthetic pulp-cellulose blends
10/10/1990CA2014319A1 Process for obtaining a high gloss base paper and base paper obtained with said process
10/09/1990US4961825 Papermaking process
10/03/1990EP0390638A1 Base-sheet for security document, with a transparent coating
10/02/1990CA1274771A1 Antimicrobially active wet wiper
09/1990
09/20/1990CA2011947A1 Stabilized synthetic pulp-cellulose blends
09/19/1990WO1990011404A1 Process for manufacturing paper, paperboard and cardboard in the presence of copolymerizates containing n-vinyl formamide units
09/19/1990EP0388115A1 Controlling industrial slime
09/19/1990EP0388090A1 Sheet with security device
09/19/1990EP0387586A1 Antimicrobial/antibromic processing preparations
09/19/1990CA2030540A1 Production of paper, board and cardboard in the presence of copolymers containing n-vinylformamide units
09/11/1990US4956400 Microemulsions of self-crosslinked polymers, thickeners, flocculants
09/11/1990CA1274017A1 Method and apparatus for checking the authenticity of documents and documents used therefor
09/07/1990WO1990009807A1 Multifunctional facial tissue
09/04/1990US4954364 Method for coating substrates with UV curable epoxysilicone compositions
09/04/1990US4954220 Flocculate the pulp and filler fines using polysilicate microgel and water soluble cationic polymer
08/1990
08/30/1990DE4005015A1 New cationic copper, nickel and cobalt phthalocyanine dyestuff cpds. - are prepd. by linking and quaternising amino-alkyl-amino-sulphonyl phthalocyanine
08/29/1990EP0384506A1 Process for coating finishing and continuous-edge foils
08/29/1990EP0384268A1 Process for the fixation of impurities in paper making
08/28/1990US4952680 Diazotization, coupling
08/22/1990WO1990010111A1 Process for coating finish films and endless edges
08/22/1990EP0383514A1 Hydrolyzed polyacrylamide blends as starch retention aids
08/22/1990EP0382795A1 Polyaluminosilicate microgel process and composition.
08/21/1990US4950545 Containing a silicone compound incorporated with an aqueous carrier; nonsmearing, soft, absorbent
08/21/1990US4950361 Process for controlling pitch deposits in the pulp and papermaking processes with zirconium (IV) compound
08/16/1990EP0382259A2 A complex of a fibrous material and fungi and a process for its preparation
08/14/1990US4948659 Process for preparation of water absorptive composite
08/14/1990US4948463 Comprising low hysterisis iron powder, pulp fibers, and latex binder for enlosing electronic components
08/13/1990CA2009825A1 Hydrolyzed polyacrylamide blends as starch retention aids
08/08/1990EP0381112A2 Method and apparatus for working webs in register, especially when producing safety yarns
08/08/1990EP0380471A1 Nonwoven fabric-like product using a bacterial cellulose binder and method for its preparation
08/07/1990US4946557 Forming, dewatering in presence of cationic silica based sol and cationic polymeric retention agent
07/1990
07/25/1990CN1044139A Beating and dyeing process for high-strength colour paper
07/25/1990CN1044068A Waterproof recording material having ground patterns and its manufacturing method
07/24/1990US4943612 Ultra-fine particulated polymer latex and composition containing the same
07/24/1990US4943378 Sewage treatment, cationic polymers, shear stability
07/24/1990US4943350 Cellulose fibers web with lotion
07/24/1990US4943324 High performance paper filler and method of producing same
07/24/1990US4943093 Security paper for bank notes and the like
07/19/1990DE4000558A1 Paper-making with application of pulp suspension to a sieve wire - with addn. of enzyme to recirculation water passing through wire to cleave deleterious dissolved substances such as hemicellulose
07/18/1990EP0378029A2 Non-forgeable and non-fluorescent security paper, and document obtained
07/18/1990EP0377983A2 Newsprint
07/18/1990EP0377881A1 Materials for use as fire retardant additives
07/18/1990EP0377653A1 Thermosetting size press composition
07/17/1990US4942232 For printing and dyeing cellulose fibers
07/17/1990US4942077 Tissue webs having a regular pattern of densified areas
07/17/1990US4941687 Security paper for currency and bank notes
07/16/1990CA2007774A1 Method for delivering pulp onto the wire of a paper machine
07/11/1990WO1990008738A1 Process for preparing basic aluminum compounds
07/11/1990EP0377283A2 Paper coating pigments
07/11/1990EP0377167A1 Safety element to protect documents against unauthorized reproduction
07/11/1990EP0377160A1 Safety document including an electricity conductor safety element
07/11/1990CA2025353A1 Process for preparing basic aluminum compounds
07/10/1990US4940783 Disazo containing diaminostilbene as diazo component and an aniline coupling component bearing a cationic alkyl ammonium group
07/10/1990US4940656 Polyolefin coated paper, alkylketene dimer, resistance to developer permeation
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