Paper Patents (Class 428/530)
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Patent number: 4060450Abstract: High yield resin saturable papers containing total lignin, based on paper weight, in amounts from about 8 up to 15 percent are employed as core stock for high pressure decorative melamine laminates. At least 65 percent of the fibers should be hardwood fibers. Up to 35 percent of softwood fibers may be present but then the softwood lignin, based on paper weight, should not be greater than about 2.8 percent.Type: GrantFiled: April 11, 1975Date of Patent: November 29, 1977Assignee: Westinghouse Electric CorporationInventors: Salvatore E. Palazzolo, Harold O. McCaskey, Jr.
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Patent number: 4060262Abstract: A sensitized record sheet for developing useful color in oily, colorless, chromogenic dye-precursor inks applied thereto. Said record sheet is acid-reacting and bears a liquid ink comprising a non-evaporable liquid organic solvent having dissolved therein an acidic phenolic resin and a lower alkyl gallate.Type: GrantFiled: March 24, 1976Date of Patent: November 29, 1977Assignee: The Standard Register CompanyInventor: Theodore Maierson
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Patent number: 4058434Abstract: Opacifying agents, which may be coated onto or incorporated into paper sheets, consisting essentially of spherical aldehyde condensation polymeric super-particles, each having a spherical, discontinuous shell surrounding a spherical hollow core, said shell composed of agglomerated, discrete spherical aldehyde condensation polymeric secondary particles which are solid throughout. The opacifying agents are incorporated into paper sheets by admixing cellulosic fibers with the super-particles.Type: GrantFiled: August 24, 1976Date of Patent: November 15, 1977Assignee: Champion International CorporationInventors: David N. Vincent, Ronald Golden
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Patent number: 4057674Abstract: In preparing a dry, laminating impregnated paper or cloth by impregnating a paper or cloth with a resin solution containing a polymerization catalyst, a cross-linking monomer and, if necessary, a releasing agent, followed by drying, the use as the resin of a resin composition consisting of (A) 10 to 90 % by weight of an organic solvent-soluble diallyl phthalate prepolymer having an average molecular weight of 2,000 to 20,000 and a softening point of 70.degree. to 140.degree. C. which prepolymer has been obtained by partially polymerizing a diallyl phthalate monomer and separating and purifying the resulting prepolymer, and 90 to 10 % by weight, in total, of (B) an organic solvent-soluble non-crystalline unsaturated polyester and (C) an organic solvent-soluble benzoguanamine resin obtained by condensing in an alkaline reaction system 1 mole of benzoguanamine with 1 to 4 moles of formaldehyde, the weight ratio of (C)/(B) being up to 0.Type: GrantFiled: April 1, 1975Date of Patent: November 8, 1977Assignee: Sumitomo Bakelite Company, LimitedInventors: Ryuzo Nakatsuka, Kenji Saito, Tadashi Kawamoto
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Patent number: 4056656Abstract: As an improved flame-resistant agent, pentabromodiphenyl ether and mixtures of pentabromodiphenyl ether and brominated diphenyl ethers; an agent for impregnating a mass of particles which comprises an impregnating agent, pentabromodiphenyl ether, preferably together with a plasticizer; a laminate substrate comprising a web of fibers impregnated with an impregnating agent and pentabromodiphenyl ether, said web preferably containing a plasticizer; a method of increasing the flame resistance of a continuous web impregnated with an impregnating agent which comprises including in said web pentabromodiphenyl ether.Type: GrantFiled: April 28, 1975Date of Patent: November 1, 1977Assignee: Dynamit Nobel AktiengesellschaftInventors: Arnold Franz, Werner Stein
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Patent number: 4048125Abstract: The present invention relates to an anti-migratory (as respects impregnated porous sheet members) phenol-formaldehyde resole resin in water emulsions. The emulsion is rendered anti-migratory (when impregnated into paper) through the addition thereto of an anti-migratory agent selected from the group consisting of polyelectrolytes, certain salts of inorganic acids, and combinations thereof. The composition is especially useful in the impregnation of filter paper.Type: GrantFiled: December 1, 1975Date of Patent: September 13, 1977Assignee: Monsanto CompanyInventor: Woodrow Hayes Ingram, II
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Patent number: 4046952Abstract: Production of consolidated overlayed product comprising a core of particulate cellulosic material bound with a polyisocyanate binder and an overlay bound to the core through a phenolformaldehyde resin which forms a barrier inhibiting penetration of the polyisocyanate into the overlay.Type: GrantFiled: October 8, 1975Date of Patent: September 6, 1977Assignee: Ellingson Timber Co.Inventors: Philip D. Shoemaker, Hobert O. McQueary
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Patent number: 4046937Abstract: A melamine-aldehyde resin is disclosed of a composition of melamine-aldehyde, a water-soluble, aliphatic diglycidyl ether, and water. The composition is cured to the A-stage and an absorbent sheet is impregnated with the resin which is then cured to the B-stage. At least one B-staged sheet is stacked with a postformable core stock and heated and pressed to form a C-staged postformable laminate. The laminate can be heated and pressed to postform it. The postformed laminate can be adhesively bonded to a substrate to form a counter top or other article.Type: GrantFiled: October 10, 1974Date of Patent: September 6, 1977Assignee: Westinghouse Electric CorporationInventors: Harold O. McCaskey, Jr., Lenon G. Brooker
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Patent number: 4043984Abstract: Melamine resins are effectively elasticized with an elasticizer having the formula R-C.sub.6 H.sub.4 --COO--X--OH wherein C.sub.6 H.sub.4 denotes a phenylene group, R denotes a hydrogen atom or a methyl or ethyl group, and X denotes an unbranched or branched alkylene group with 2 to 6 carbon atoms whose carbon chain is either uninterrupted or interrupted by one oxygen atom. Such elasticized resins are particularly suitable for bonding together laminates.Type: GrantFiled: September 4, 1975Date of Patent: August 23, 1977Assignee: Cassella Farbwerke Mainkur AktiengesellschaftInventors: Karl-Heinz Keil, Karlfried Keller, Joachim Ribka, Dieter Tichy
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Patent number: 4044185Abstract: A colored decorative plastic laminate is made from a core layer and a superimposed decorative layer comprising: a fibrous material, coloring particles having a Moh's hardness of up to about 6 and an average particle size range of between about 53 to 210 microns, and thermoset resin; where the weight ratio of fiber material:coloring particles is from about 1:0.04 to 1:0.4 and the colored decorative layer is characterized in that the pigments are dispersed only through the bottom two-thirds of the colored layer and concentrated in the colored layer near the core-decorative layer interface, the top one-third of the colored layer containing substantially no pigment particles.Type: GrantFiled: January 20, 1975Date of Patent: August 23, 1977Assignee: Westinghouse Electric CorporationInventors: Harold O. McCaskey, Jr., Salvatore E. Palazzolo
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Patent number: 4038229Abstract: Aqueous impregnating resins based on a condensate of melamine and formaldehyde containing a lower fatty acid dialkyl amide such as dimethyl acetamide either in solution or as part of the condensate, and a process for the manufacture thereof.Type: GrantFiled: June 12, 1975Date of Patent: July 26, 1977Assignee: Badische Anilin- & Soda-Fabrik AktiengesellschaftInventors: Wolfgang Eisele, Ludwig Lelgemann, Bernhard Magerkurth, Harro Petersen
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Patent number: 4034128Abstract: Rheologically stable aqueous dispersions of metal-modified novolak resin particles are prepared by grinding an aqueous mixture of the metal-modified novolak resin and anionic polymeric dispersing agent in the presence of a small amount of an organo-phosphorus compound containing two or more phosphonic acid or alkali metal phosphonate groups per molecule. Dispersions of the metal-modified resin particles so produced may be incorporated in color developing coating compositions containing a binder which may be applied and dried on a carrier paper to produce a pressure-sensitive record sheet.Type: GrantFiled: May 5, 1975Date of Patent: July 5, 1977Assignee: The Mead CorporationInventor: Russell D. Kelley
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Patent number: 4033914Abstract: This disclosure relates to a waterproof and weather-resistant adhesive composition for use in the manufacture of corrugated board and its preparation. More specifically, it concerns the preparation of a water-resistant paperboard adhesive containing a resin and a primary, secondary or tertiary amine compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different and are hydrogen, alkyl groups of 1 to 3 carbon atoms, or hydroxyalkyl groups of 1 to 3 carbon atoms. This improved starch base adhesive has superior viscosity stability, improved gel temperature, and excellent pot life stability compared to an adhesive made without aminohydroxy compound.Type: GrantFiled: February 23, 1976Date of Patent: July 5, 1977Assignee: Anheuser-Busch, IncorporatedInventors: Edward M. Bovier, John E. Voigt
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Patent number: 4031313Abstract: A laminated material comprises a substrate material containing resin-impregnated layers, a metal foil disposed on said substrate and an arc-retardant layer arranged between the metal foil and the substrate material. The arc-retardant layer is an arc-retardant, crosslinked heat-stable synthetic resinous material consisting of from about 60 to 100% by weight of a heat-stable resin which is free of aromatic groupings or heterocyclic rings containing at least one heteroatom and conjugated double bonds and which is not converted to a graphite-containing structure upon being thermally decomposed.Type: GrantFiled: February 3, 1975Date of Patent: June 21, 1977Assignee: Dynamit Nobel AktiengesellschaftInventors: Arnold Franz, Dirk Huthwelker, Lothar Jacob
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Patent number: 4028204Abstract: Compounds containing a benzophenone or a substituted benzophenone moiety are (a) autophotopolymerizable, (b) photopolymerizable in compositions with another photoinitiator, and (c) photoinitiating in compositions with another photopolymerizable material.Type: GrantFiled: May 12, 1975Date of Patent: June 7, 1977Assignee: Sun Chemical CorporationInventors: George Rosen, Daniel J. Carlick, Ralph H. Reiter
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Patent number: 4026855Abstract: The disclosure relates to a composition of matter comprising a blend of an ungelled modified cross-linking agent, certain water-dispersible non-gelled polymeric materials carrying a cationic charge and an acid solubilizer in certain stated proportions. The disclosure also relates to the use of these compositions of matter in the process of electrodepositing films on an electrically conductive surface which comprises passing an electric current between a cathode comprising said surface and an electrically conductive anode immersed in an aqueous dispersion of said composition.Type: GrantFiled: October 20, 1975Date of Patent: May 31, 1977Assignee: American Cyanamid CompanyInventors: Girish Girdhar Parekh, Werner Josef Blank
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Patent number: 4022674Abstract: Compounds containing a benzophenone or a substituted benzophenone moiety are (a) autophotopolymerizable, (b) photopolymerizable in compositions with another photoinitiator, or (c) photoinitiating in compositions with another photopolymerizable material.Type: GrantFiled: May 12, 1975Date of Patent: May 10, 1977Assignee: Sun Chemical CorporationInventor: George Rosen
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Patent number: 4016336Abstract: Melamine resin films prepared by impregnating paper, cellulose fleece or fabric with a solution of a monomeric dimethylolmelamine mono-, di- or trimethylether, monomeric trimethylolmelamine mono-, di- or trimethylether or a mixture thereof and drying the same at temperatures of about 130.degree. to about 180.degree. C.Type: GrantFiled: November 7, 1975Date of Patent: April 5, 1977Assignee: Cassella Farbwerke Mainkur AktiengesellschaftInventors: Karl Schnee, Dieter Tichy, Walter Michel, Gunter Gruber
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Patent number: 4011363Abstract: Curable amino resins are prepared from a system having two components, each of which remains storage stable for extended periods of time. The two components are drawn from separate storage vessels and combined in an in-line mixer immediately prior to the point of use. The system reduces mixing costs and provides greater control over changes in viscosity, precipitation and resin particle size occurring during the mixing process. The resins are used as adhesives (binders) for wood fiber, particles and chips, as well as for paper products and plywood materials.Type: GrantFiled: May 18, 1976Date of Patent: March 8, 1977Assignee: Allied Chemical CorporationInventors: Richard D. Sundie, Walter L. Pennie
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Patent number: 4008138Abstract: Compounds containing a benzophenone or a substituted benzophenone moiety are (a) autophotopolymerizable, (b) photopolymerizable in compositions with another photoinitiator, and (c) photoinitiating in compositions with another photopolymerizable material.Type: GrantFiled: May 20, 1975Date of Patent: February 15, 1977Assignee: Sun Chemical CorporationInventors: George Rosen, Daniel J. Carlick, Ralph H. Reiter
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Patent number: 4004998Abstract: Compounds containing a benzophenone or a substituted benzophenone moiety are (a) autophotopolymerizable, (b) photopolymerizable in compositions with another photoinitiator, or (c) photoinitiating in compositions with another photopolymerizable material.Type: GrantFiled: April 25, 1975Date of Patent: January 25, 1977Assignee: Sun Chemical CorporationInventor: George Rosen
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Patent number: 4002790Abstract: The postformability of laminates particularly decorative laminates, having resin-impregnated paper layers is improved by resin treating at least one of the core layers near the surface of the laminate to render the fibers therein less yielding than those of the other layers.Type: GrantFiled: September 6, 1974Date of Patent: January 11, 1977Assignee: General Electric CompanyInventor: Carl E. Trewiler
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Patent number: 4000340Abstract: Applying water-insoluble, high melting alcohols, carboxylic acids or carboxylate salts to fabrics in an automatic clothes dryer provides a desirable crisp feel thereto.Type: GrantFiled: November 19, 1973Date of Patent: December 28, 1976Assignee: The Procter & Gamble CompanyInventors: Alan Pearce Murphy, Fred Martin Habermehl, III
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Patent number: 3988522Abstract: Improved aqueous slurry type coating colors for coating of paper, paperboard and the like are described in which there is incorporated along with the usual finely divided inorganic pigments, such as clay, an auxiliary pigment consisting of a substantially water-insoluble, cross-linked urea-formaldehyde resin in highly dispersed particulate form. The urea-formaldehyde pigment constitutes from about 2 to 25% and preferably from about 3 to about 15% by weight of the total pigment solids in the coating colors. The BET specific surface area of the particulate urea-formaldehyde pigments ranges from about 40 to about 75 square meters per gram in which instance the average agglomerate size of the pigments ranges from about 2 to about 3.5 microns. In those instances where the BET specific surface area of the urea-formaldehyde pigments ranges from at least 15 to 40 square meters per gram, the average agglomerate size of the pigments ranges from about 2 to about 4 microns.Type: GrantFiled: November 24, 1975Date of Patent: October 26, 1976Assignee: Cabot CorporationInventor: Gregor Berstein
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Patent number: 3985936Abstract: The invention relates to copying and recording materials such as pressure-sensitive and/or heat-sensitive material, which contains as color former specific naphthofuranes.Type: GrantFiled: November 18, 1974Date of Patent: October 12, 1976Assignee: Ciba-Geigy CorporationInventor: Jean-Claude Petitpierre
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Patent number: 3983307Abstract: A unitary, heat and pressure consolidated laminate comprising at least one paper sheet, a decorative sheet and a coating on said decorative sheet, said paper sheet and said decorative sheet being impregnated with an acrylic resin-melamine/formaldehyde resin composition and said coating comprising an acrylic resin-alkoxymethylated melamine composition.Type: GrantFiled: September 29, 1975Date of Patent: September 28, 1976Assignee: Formica CorporationInventors: George Edward Power, Dudley Wulfekotter
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Patent number: 3979478Abstract: Amino resins, e.g., ureaformaldehyde and melamine-formaldehyde thermosetting resin systems, are catalyzed with high molecular weight polyalkylaromatic polysulfonic acids, e.g., dinonylnaphthalene disulfonic acid and didodecylnaphthalene disulfonic acid. Resins cured with such catalysts provide surface coatings having superior properties. The catalyzed compositions can include other conventional ingredients, capable of co-reacting with the amino resins, such as polyols, polyacids, alkyd resins, polyester resins, and the like, to provide compositions curable to products having a wide range of properties.Type: GrantFiled: May 1, 1974Date of Patent: September 7, 1976Assignee: King Industries, Inc.Inventor: Lawrence V. Gallacher
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Patent number: 3975572Abstract: A unitary, heat and pressure consolidated laminate comprising at least one paper sheet, a decorative sheet and a coating on said decorative sheet, said paper sheet and said decorative sheet being impregnated with an acrylic resin-melamine/formaldehyde resin composition and said coating comprising an acrylic resin-alkoxymethylated melamine composition containing pyrophyllite, andalusite or mixtures thereof.Type: GrantFiled: December 22, 1975Date of Patent: August 17, 1976Assignee: Formica CorporationInventor: George Edward Power
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Patent number: 3973070Abstract: The present invention relates to an anti-migratory (as respects impregnated porous sheet members) phenol-formaldehyde resole resin in water emulsions. The emulsion is rendered anti-migratory (when impregnated into paper) through the addition thereto of an anti-migratory agent selected from the group consisting of polyelectrolytes, certain salts of inorganic acids, and combinations thereof. The composition is especially useful in the impregnation of filter paper.Type: GrantFiled: July 31, 1975Date of Patent: August 3, 1976Assignee: Monsanto CompanyInventor: Woodrow Hayes Ingram, II
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Patent number: 3969174Abstract: The surface smoothness of decorative laminate pressed without pans is improved by using as a pressure equalizing medium during consolidation of the laminate lay-up under heat and pressure, a thermoplastic resin layer between successive laminate lay-ups which melts or softens and flows at the consolidation temperature, the thermoplastic resin layer being protected on either side by a release medium. The use of the thermoplastic resin layer eliminates the use of the usual highly polished metal caul plates for all but the smoothest laminates and permits the use of press build-ups of many more laminate lay-ups than when using metal caul plates.Type: GrantFiled: December 20, 1974Date of Patent: July 13, 1976Assignee: General Electric CompanyInventors: Peter B. Kelly, Donald G. Pucci
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Patent number: 3968291Abstract: The invention relates to decorative plastics laminates with improved clarity in the wear surface layer. The laminates consist of a decorative paper sheet impregnated with a noble thermoset resin, the sheet being supported by a core layer; the sheet carries a coating of a noble thermoset resin and barium sulphate. The thermoset resin is preferably a melamine-formaldehyde resin.Type: GrantFiled: January 9, 1974Date of Patent: July 6, 1976Assignee: Formica International LimitedInventor: Marcel Chevallier
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Patent number: 3959570Abstract: A method of manufacture from a predetermined material, especially from a natural fibrous material and/or synthetic fibrous material of an article, in particular a sheet for printing or reproduction, which combines superior qualities of brightness, opacity, thermal stability, insolubility and lightness, said method consisting of laoding said material throughout its mass or superficially, with a filler product having a base of a methylene urea precipitate with a low degree of polymerization, obtained by the reaction of urea on formaldehyde in an acid medium.Type: GrantFiled: October 24, 1974Date of Patent: May 25, 1976Assignee: Centre Technique de l'Industrie des Papiers Cartons et CellulosesInventors: Guy Jacquelin, Solange Sangenis
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Patent number: 3949133Abstract: A high pressure laminate comprising an overlay sheet impregnated with a melamine resin, and an unimpregnated decorative sheet of fibrous cellulosic material, a thin resin coating on preferably the backside of said decorative layer, and a core comprising a multiplicity of sheets of cellulosic material impregnated with a phenolic resin.Type: GrantFiled: January 28, 1974Date of Patent: April 6, 1976Assignee: The Orchard Corporation of AmericaInventors: Pasco R. Santurri, Howard W. Mumm, Robert L. Flowers, Robert A. Eaton
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Patent number: 3946137Abstract: This invention relates to a decorative plastic laminate preferably one having a high wear resistant decorative surface in which the various layers have controlled wear indices so as to provide the laminate with improved uniform machineable properties.Type: GrantFiled: May 16, 1973Date of Patent: March 23, 1976Assignee: Formica CorporationInventors: George Edward Power, Dudley Wulfekotter
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Patent number: 3940538Abstract: High yield resin saturable papers containing total lignin, based on paper weight, in amounts from about 8 up to 15 percent are employed as core stock for high pressure decorative melamine laminates. At least 65 percent of the fibers should be hardwood fibers. Up to 35 percent of softwood fibers may be present but then the softwood lignin, based on paper weight, should not be greater than about 2.8 percent.Type: GrantFiled: September 1, 1972Date of Patent: February 24, 1976Assignee: Westinghouse Electric CorporationInventors: Salvatore E. Palazzolo, Harold O. McCaskey, Jr.
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Patent number: 3936547Abstract: Melamine resin films prepared by impregnating paper, cellulose fleece or fabric with a solution of a monomeric dimethylolmelamine mon-, di- or trimethylether, monomeric trimethylolmelamine mono-, di or trimethylether or a mixture thereof and drying the same at temperatures of about 130.degree. to about 180.degree.C.Type: GrantFiled: February 14, 1974Date of Patent: February 3, 1976Assignee: Cassella Farbwerke Mainkur AktiengesellschaftInventors: Karl Schnee, Dieter Tichy, Walter Michel, Gunter Gruber
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Patent number: 3936339Abstract: An efficient, inexpensive, in-line process is provided for producing additive-impregnated corrugated board, such as those having excellent rigid-when-wet and rigid-when-humid strengths. The process comprises applying an additive, such as water- and moisture-resistant resin, flame retardant, fire proofing agent, fungicide, mold-inhibitor, insecticide, or the like, in the form of a collapsible foam of a dispersion or solution of the additive to the corrugated medium, and desirably the liners, at the time the corrugated board is being formed.Type: GrantFiled: May 29, 1973Date of Patent: February 3, 1976Assignee: International Paper CompanyInventors: James A. Lock, Leroy C. Hofmann, Chester P. Kulesza
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Patent number: 3934587Abstract: A novel material is disclosed and a process and apparatus for making the same, which process comprises reacting one side of a solid sheet or film of a polymeric compound containing reactable hydroxyl or amine groups with a vapor phase mixture of acid chloride and aldehyde. The resulting product is water-repellent along the treated side and water-permeable along the opposite, untreated side. Also disclosed are novel disposable articles such as sanitary clothing and containers for liquids fashioned from the material made by means of the process and apparatus of the present invention.Type: GrantFiled: June 17, 1974Date of Patent: January 27, 1976Inventor: Roy Gerald Gordon
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Melamine, formaldehyde, thiourea and diol ether thermosetting resin and method of preparing the same
Patent number: 3933755Abstract: A thermosetting resin useful for attaching decorative paper facings to chipboard and like cellulosic panels is prepared by condensation of melamine with thiourea, formaldehyde, and a diol ether, up to one half by weight of the melamine being capable of being replaced by urea without seriously effecting the quality of the resin.Type: GrantFiled: May 22, 1974Date of Patent: January 20, 1976Assignee: Suddeutsche Kalkstickstoff-Werke AGInventors: Horst Michaud, Josef Seeholzer, Ludwig Pentzel, Josefa Mangs