| 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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| 10/02/1990 | US4960876 Modified galactomannans and process for their preparation |
| 10/02/1990 | US4960615 Composition and method for using composition to reduce the effects of water and ultraviolet radiation on carbon central structures |
| 10/02/1990 | US4960540 Alkoxylated bis-amide defoaming compounds |
| 10/02/1990 | CA1274822A1 Method of improving the color of tall oil rosin ester |
| 09/27/1990 | DE3909007A1 Kationische harnstoff-formaldehyd-kondensate, verfahren zu ihrer herstellung und ihre verwendung in der papierindustrie Cationic urea-formaldehyde condensates, processes for their preparation and their use in the paper industry |
| 09/26/1990 | EP0259671B1 Invert size for the internal and surface sizing of paper |
| 09/25/1990 | US4959453 Process for the preparation of a poly(paraphenylene terephthalamide)fibrous gel composition and a process to produce poly(paraphenylene terephthalamide) paper from the composition |
| 09/25/1990 | US4959125 Soft tissue paper containing noncationic surfactant |
| 09/23/1990 | CA2012954A1 Controlled precipitation and use of amorphous silica from geothermal fluid or aqueous media having a silicic acid concentration |
| 09/20/1990 | CA2012526A1 Natural fiber product coated with a thermoset binder material |
| 09/20/1990 | CA2012525A1 Sizing of cellulose fibers |
| 09/19/1990 | WO1990011404A1 Process for manufacturing paper, paperboard and cardboard in the presence of copolymerizates containing n-vinyl formamide units |
| 09/19/1990 | WO1990011308A1 Cationic urea-formaldehyde condensates, a process for their manufacture and their use in the paper industry |
| 09/19/1990 | CA2049059A1 Cationic urea-formaldehyde condensates, preparation thereof, and use thereof in the paper industry |
| 09/19/1990 | CA2030540A1 Production of paper, board and cardboard in the presence of copolymers containing n-vinylformamide units |
| 09/18/1990 | US4957977 Modified n-vinylformamide-(meth)acrylonitrile copolymer, paper strength increaser, papermaking drainage and retention aid |
| 09/18/1990 | CA1274059A1 Process for sizing in the production of paper, cardboard, paperboard and other cellulose containing materials |
| 09/11/1990 | US4956400 Microemulsions of self-crosslinked polymers, thickeners, flocculants |
| 09/11/1990 | US4956049 Impregnation and drying |
| 09/11/1990 | CA1273759A1 Method for treating paper to improve the holdout characteristics of printing inks |
| 09/05/1990 | EP0385626A1 Papermaking method |
| 09/05/1990 | EP0385396A1 Organosiloxane-containing polysaccharides |
| 09/05/1990 | EP0275256B1 Method of processing waste paper |
| 09/04/1990 | US4954468 Synthetic alkali metal alumino-silicates, methods and use, compositions and their methods of preparation |
| 09/04/1990 | US4954364 Method for coating substrates with UV curable epoxysilicone compositions |
| 09/04/1990 | US4954220 Flocculate the pulp and filler fines using polysilicate microgel and water soluble cationic polymer |
| 08/29/1990 | EP0384268A1 Process for the fixation of impurities in paper making |
| 08/29/1990 | EP0384038A1 A composite flooring felt for vinyl flooring containing latexes and an activator and a process for preparing the same |
| 08/28/1990 | US4952279 Cationic starch ether;reacting starch with quaternary ammonium sulfamate; retention of inorganic filler |
| 08/28/1990 | US4952278 High opacity paper containing expanded fiber and mineral pigment |
| 08/23/1990 | WO1990010108A1 Recovery of turpentine and heat |
| 08/23/1990 | CA2046903A1 Recovery of turpentine and heat |
| 08/22/1990 | EP0383514A1 Hydrolyzed polyacrylamide blends as starch retention aids |
| 08/22/1990 | EP0382795A1 Polyaluminosilicate microgel process and composition. |
| 08/21/1990 | US4950361 Process for controlling pitch deposits in the pulp and papermaking processes with zirconium (IV) compound |
| 08/16/1990 | EP0382427A2 Cationically dispersed slurries of calcined kaolin clay |
| 08/15/1990 | CN1009225B Water-proof photographic paper-carrier |
| 08/14/1990 | WO1990009483A1 Paper manufacturing process, and papers obtainable by means of that process |
| 08/14/1990 | US4948464 Acrylamide-2-acrylamido-2-methylpropanesulfonic acid polymers as formation aids in wet laid nonwovens production |
| 08/14/1990 | US4948463 Comprising low hysterisis iron powder, pulp fibers, and latex binder for enlosing electronic components |
| 08/13/1990 | CA2009825A1 Hydrolyzed polyacrylamide blends as starch retention aids |
| 08/10/1990 | CA2007945A1 Cationically dispersed slurries of calcined kaolin clay |
| 08/09/1990 | WO1990008852A1 Method for obtaining a reactive cationized glue for mass sizing or press sizing of paper, and emulsion thus obtained |
| 08/08/1990 | EP0380528A1 Polysaccharides from the endosperm of seeds of prosopis juliflora, process for extracting them, and their use |
| 08/08/1990 | EP0380471A1 Nonwoven fabric-like product using a bacterial cellulose binder and method for its preparation |
| 08/07/1990 | US4946557 Forming, dewatering in presence of cationic silica based sol and cationic polymeric retention agent |
| 08/01/1990 | EP0380430A1 Process for grinding calcium carbonate in an aqueous medium |
| 08/01/1990 | EP0379964A1 Ink jet printer recording sheet |
| 08/01/1990 | CN1044315A Preparation method for straw board surface-protecting paper and its products |
| 07/31/1990 | US4945074 Produced by controlled hydration and dehydration of alkali metal silicate glass powder |
| 07/26/1990 | WO1990008223A1 Method for fabricating paper for bottle labels |
| 07/25/1990 | EP0378837A1 Preparation of calcium sulfate dihydrate having an elongated crystalline structure |
| 07/25/1990 | CN1044139A Beating and dyeing process for high-strength colour paper |
| 07/24/1990 | US4943608 Effective in high temperature, high water hardness papermaking system |
| 07/24/1990 | US4943378 Sewage treatment, cationic polymers, shear stability |
| 07/24/1990 | US4943350 Cellulose fibers web with lotion |
| 07/24/1990 | US4943349 Papermaking, fibers, filler, anionic binder, cationic flocculant, dispersion |
| 07/24/1990 | US4943324 High performance paper filler and method of producing same |
| 07/19/1990 | DE4000558A1 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 |
| 07/18/1990 | EP0377881A1 Materials for use as fire retardant additives |
| 07/18/1990 | EP0377653A1 Thermosetting size press composition |
| 07/16/1990 | CA2007774A1 Method for delivering pulp onto the wire of a paper machine |
| 07/12/1990 | WO1990007609A1 Self-emulsifiable size |
| 07/12/1990 | WO1990007608A1 Method of preparing fibrous, non-woven webs |
| 07/11/1990 | WO1990008738A1 Process for preparing basic aluminum compounds |
| 07/11/1990 | CA2025353A1 Process for preparing basic aluminum compounds |
| 07/10/1990 | US4940784 Method for the dry cationization of galactomannans (II) |
| 07/10/1990 | US4940656 Polyolefin coated paper, alkylketene dimer, resistance to developer permeation |
| 07/10/1990 | US4940514 Making paper, board and cardboard of high dry strength |
| 07/10/1990 | US4940513 Process for preparing soft tissue paper treated with noncationic surfactant |
| 07/04/1990 | CN1043505A Process for dry cationization of starch ii |
| 07/03/1990 | CA1271150A1 Microbial enhancement of polymer viscosity |
| 07/03/1990 | CA1271004A1 Cationic sizing agents for paper |
| 06/28/1990 | WO1990005211A3 Paper-like or cardboard-like raw material and process for making it |
| 06/27/1990 | EP0374993A2 Use of a mixture of starch and polyvinylalcohol |
| 06/27/1990 | EP0374938A1 Process for producing aqueous solution of cationic thermosetting resin |
| 06/27/1990 | EP0374700A2 Process for preparing mechanical pulp and for paper containing said pulp |
| 06/27/1990 | EP0374646A2 Process for the manufacture of stable water-oil emulsions of hydrolysed N-vinyl amide polymers, and use thereof |
| 06/27/1990 | EP0374478A2 Emulsified functionalized polymers |
| 06/27/1990 | EP0374196A1 Method of reducing pitch in pulping and papermaking |
| 06/27/1990 | CA2006569A1 Alkali metal kurrol's salt as a paper pulp draining aid |
| 06/26/1990 | US4937209 Porous inorganic materials |
| 06/26/1990 | CA1270605A1 Unfortified liquid paper sizing composition and method of preparation |
| 06/20/1990 | EP0373306A2 Colloidal composition and its use in the production of paper and paperboard |
| 06/20/1990 | CA2004144A1 Preparation of stable water-in-oil emulsions of hydrolyzed polymers of n-vinylamides and their use |
| 06/19/1990 | US4935391 Process for preparing a purified mineral coating |
| 06/19/1990 | US4935062 Kaolinite aggregation using organo-silicon compounds |
| 06/19/1990 | CA1270352A1 Aqueous dispersions, a process for their preparation and the use of the dispersions as sizing agents |
| 06/14/1990 | WO1990006330A1 Aqueous polyurethane and polyurethane carbamide dispersions, and a process for flock-coating moulded elastomeric products and for heat-sealing non-woven textile articles using these dispersions |
| 06/13/1990 | EP0373137A2 Use of a composition of impregnated mica paper as a covering for building elements, and building elements obtained |
| 06/13/1990 | EP0372715A1 Polymeric basic aluminum silicate-sulphate |
| 06/13/1990 | EP0372388A2 Water-disintegrable cleaning sheet |
| 06/13/1990 | CN1042959A Reusable calligraphy and painting paper and its manufacturing technique |
| 06/13/1990 | CN1007819B Carbonate-containing mineral fillers, pigments and similar materials |
| 06/12/1990 | US4933387 Synthetic alkali metal alumino-silicates, methods and uses, compositions and their methods of preparation |
| 06/09/1990 | CA2004308A1 Procedure for the manufacture of a mixture of starch and polyvinyl alcohol and thus manufactured mixture |
| 06/06/1990 | EP0371957A2 Flame-retardant high-temperature resistant paperlike materials based on thermostable polymers |
| 06/06/1990 | EP0215044B1 Method for preparing a fibrous sheet by using paper manufacturing techniques |
| 06/05/1990 | US4931510 Polymers from ethylenic monomers |
| 05/31/1990 | CA2004296A1 Water-disintegrable cleaning sheet |