Organic Material Containing Patents (Class 106/447)
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Patent number: 5348666Abstract: A method is disclosed for stabilizing glutaraldehyde in aqueous systems is disclosed. The method of the invention comprises the addition of an oxidizer to the aqueous system so as to prevent the undesired conversion of glutaraldehyde to non-biocidal products.Type: GrantFiled: March 31, 1993Date of Patent: September 20, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Lawrence A. Grab
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Patent number: 5344489Abstract: A method of making synthetic color pigments comprises synthesizing monodispersed colloidal core particles by precipitation from a solution and applying dye material to the core particles either by adsorption directly into the core particles or by adsorption or incorporation into alumina fixation shells at the surfaces of the core particles. Additional functional shells may be applied to the dyed core particles for various reasons. The pigments are useful for the coloration of various media such as printing inks and paint compositions.Type: GrantFiled: November 15, 1991Date of Patent: September 6, 1994Assignee: Manfred R. KuehnleInventors: Egon Matijevic, Wan P. Hsu, Manfred R. Kuehnle
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Patent number: 5338353Abstract: A method for the production of powder of fine inorganic particles excellent in dispersibility in various solvents from a slurry of said fine inorganic particles containing water, which method comprises preparing a slurry as a raw material by incorporating in said slurry at least one orgaic compound selected from the group consisting of (A) methanol and (B) organic compound capable of dissolving of dissolving water in an amount of not less than 1.0% by weight at 20.degree. C. and forming a two-component azeotropic mixture of water and organic compounds having a water content of not less than 4.0% by weight and converting said prepared slurry into powder by the use of a powderization apparatus comprising an externally heatable pipe one end of which serves as a slurry inlet and the other end of which serves as a device for separating the produced powder and a vapor held in a vacuum state and a powder and a powder collecting chamber connected to said separating device.Type: GrantFiled: October 20, 1992Date of Patent: August 16, 1994Assignee: Nippon Shokubai Kagaku KogyoInventors: Hiroyoshi Uchino, Tadahiro Yoneda
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Patent number: 5326381Abstract: A trace amount of a polytetrafluoroethylene resin is incorporated with an abrasive pigment prior to or during the preparation of an aqueous pigment slurry or is applied to dry pigment to reduce the abrasivity of the pigment. The treated pigment can be employed in the manufacture of filled and coated paper.Type: GrantFiled: May 10, 1993Date of Patent: July 5, 1994Assignee: Engelhard CorporationInventor: Joseph H. Z. Wu
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Patent number: 5318625Abstract: A pigment composition of improved dispersibility in thermoplastic resins and concentrates of the pigment composition in thermoplastic resin are provided. The pigment composition is comprised of an inorganic pigment such as titanium dioxide having an organophosphate ester treating agent deposited thereon.Type: GrantFiled: October 19, 1992Date of Patent: June 7, 1994Assignee: Kerr-McGee Chemical CorporationInventor: Rodney D. Stramel
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Patent number: 5318624Abstract: A process for preparing a uniform aqueous dispersion of titanium dioxide, gelatin, polymer beads and other components of a reflective binder layer for a photographic paper is disclosed. The process comprises combining all the components without regard to the creation of aggregates and then passing the entire mixture through a media mill to form a uniform dispersion.Type: GrantFiled: September 4, 1992Date of Patent: June 7, 1994Assignee: Eastman Kodak CompanyInventor: Douglas D. Corbin
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Patent number: 5288320Abstract: Titanium dioxide carries an ester or a partial ester of an hydroxy compound containing 1 to 6 OH groups and an aliphatic saturated C.sub.10 to C.sub.22 monocarboxylic acid. The product is easily dispersible in plastics compositions, particularly masterbatches. The titanium dioxide can also be coated with one or more hydrous oxides.The product is prepared by milling the titanium dioxide in a fluid energy mill in the presence of the ester or partial ester.Type: GrantFiled: December 30, 1991Date of Patent: February 22, 1994Assignee: Tioxide Group Services LimitedInventor: Guy Decelles
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Patent number: 5282898Abstract: The present invention provides a simple inexpensive means to decrease the abrasivity of abrasive pigments such as calcined kaolin and titania. In accordance with this invention, a trace of a nonionic and/or anionic surfactant is incorporated with abrasion pigment prior to or during the preparation of an aqueous pigment slurry or to dry pigment.Type: GrantFiled: June 12, 1992Date of Patent: February 1, 1994Assignee: Engelhard CorporationInventor: Joseph H. Z. Wu
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Patent number: 5282893Abstract: An ethanol type marking ink composition comprises ethanol as a main solvent, titanium oxide and a condensation product of urea and aliphatic aldehydes. The composition is less toxic and gives good fixability, weather resistance and fastness of drawing lines. The redispersing property of titanium oxide is good even after a long time storage.Type: GrantFiled: December 16, 1991Date of Patent: February 1, 1994Assignee: Mitsubishi Pencil Kabushiki KaishaInventor: Motohiro Komiya
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Patent number: 5279662Abstract: Alkyl polyglycoside surfactants are effective dispersing agents for TiO.sub.2 in aqueous dispersions.Type: GrantFiled: February 24, 1993Date of Patent: January 18, 1994Assignee: Henkel CorporationInventor: George A. Smith
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Patent number: 5279664Abstract: A method for dispersing a comminuted solid in an aqueous medium is described. An aqueous dispersing agent is added to an aqueous medium in an amount sufficient to disperse the comminuted solid in the aqueous medium. The aqueous dispersing agent includes from about 10 wt. % to about 55 wt. % of an amine compound selected from the group consisting of alkanolamines, triethylamine and morpholine, from about 15 wt. % to about 35 wt. % of a base selected from the group consisting of sodium hydroxide and potassium hydroxide, and from about 0.1 wt. % to about 15 wt. % chelating agent.Type: GrantFiled: December 17, 1991Date of Patent: January 18, 1994Assignee: Angus Chemical CompanyInventors: Glenn N. Robinson, Gregory E. McWright
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Patent number: 5270076Abstract: A process for coating at least one cationically charged ketene dimer on titanium dioxide comprising grinding the titanium dioxide in acidic aqueous media in the presence of a cationically charged ketene dimer.Type: GrantFiled: April 11, 1991Date of Patent: December 14, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Glenn R. Evers
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Patent number: 5264030Abstract: In order to provide a filler for degradable plastics which can simplify the stages for producing a degradable plastic, give effective plastic-degradability, and stabilize the quality of the plastic article, the filler is used as a carrier substance and effective biodegradable and/or photodegradable components are adsorbed on the surfaces of the filler particles via a surface treating agent.Type: GrantFiled: April 6, 1992Date of Patent: November 23, 1993Assignee: Nittetsu Mining Co., Ltd.Inventors: Katsuyuki Tanabe, Masaharu Umebayashi, Atsushi Ugomori, Seiji Asaba
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Patent number: 5264033Abstract: Disclosed is a process for producing a titanium dioxide pigment used for a resin-coated paper type photographic support, comprising the following steps:(a) a step of adding at least one alkaline earth metal compound in an amount of 0.01-2.0% by weight in terms of a metal oxide based on the titanium dioxide before calcination step and(b) an acid-washing step of washing the titanium dioxide at acidic state after the calcination step and before a step of surface treatment with a hydrated metal oxide,and wherein particle size of the titanium dioxide pigment is 0.110-0.150 .mu.m shown by number-average diameter obtained by measuring the diameter in a certain direction using an electron microscope.A photographic support which comprises the above titanium dioxide pigment is also disclosed.Occurrence of die lip stain and microgrit are substantially restrained in this photographic support and a photographic material made of it shows improved image sharpness.Type: GrantFiled: June 13, 1991Date of Patent: November 23, 1993Assignees: Mitsubishi Paper Mills Ltd, Tohkem Products Corp.Inventors: Touru Noda, Akira Uno, Kazuyoshi Muraoka
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Patent number: 5258071Abstract: Vitreous filler material for incorporation into a polymerizable matrix, including a filler material which is vitreous; a polymerization catalyst; and a fixing agent which is applied to at least a part of the surface of the filler material and which affixes the polymerization catalyst to the surface of the filler material. Fixing catalyst to the surface of the filler material prior to its being contacted with the polymerizable matrix material facilitates good distribution of the catalyst within the polymerizable matrix material, and advantageously allows rapid catalytic action and a reduction in the amount of catalyst required.Type: GrantFiled: June 16, 1992Date of Patent: November 2, 1993Assignee: GlaverbelInventor: Pierre LaRoche
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Patent number: 5232881Abstract: The present invention provides a simple inexpensive means to decrease the abrasivity of abrasive pigments such as calcined kaolin and titania. In accordance with this invention, a trace of a nonionic surfactant of the general formula ##STR1## is incorporated with abrasive pigment prior to or during the preparation of an aqueous pigment slurry or to dry pigment.Type: GrantFiled: November 3, 1992Date of Patent: August 3, 1993Assignee: Engelhard CorporationInventor: Joseph H. Z. Wu
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Patent number: 5190583Abstract: An aqueous coating composition is provided which reflects light, especially UV radiation, and can be colored as desired. It is prepared from a synthetic resin dispersion and inorganic pigments having a particle size ranging between 7 and 10 nm, with the exception of carbon black.Type: GrantFiled: June 24, 1992Date of Patent: March 2, 1993Assignee: Transfer-Electric Gesellschaft FurInventors: Tankred Menzel, Hermann Nickel
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Patent number: 5152835Abstract: Novel titania-calcined kaolin composite pigments wherein structuring and adhesion of titania and calcined kaolin particles is achieved by use of a cationic polyelectrolyte. Methods for compositing titania and calcined kaolin pigments which feature the presence of at least one polyanionic dispersant (such as sodium polyacrylate, sodium silicate, sodium condensed phosphate or mixtures thereof) in the pigment slurry into which cationic polyelectrolyte is introduced and the use of strongly alkaline pH (e.g., above 9).Type: GrantFiled: May 8, 1991Date of Patent: October 6, 1992Assignee: Engelhard CorporationInventor: Saad Nemeh
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Patent number: 5116411Abstract: The addition of an organophosphato-titanate and an organophosphato-zirconate to printing ink improves the adhesivity of the ink to a variety of substrates. A concentrate of the two organo-metallic components may be added to a conventional ink or added to the ink formulation during the ink's initial preparation. In addition to improving adhesivity, the additives reduce drying time, permit more rapid processing, and minimize the need for solvent diluents.Type: GrantFiled: December 22, 1989Date of Patent: May 26, 1992Assignee: Topez CompanyInventors: Michael W. O'Neill, Gerald Sugerman
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Patent number: 5108508Abstract: Novel rutile mixed phase pigment microgranulates are disclosed which comprise hemispherical particles indented to form toroid-shaped beads. The microgranulates are free-flowing, non-dust forming, and are stable in handling.Type: GrantFiled: September 10, 1990Date of Patent: April 28, 1992Assignee: Bayer AktiengesellschaftInventors: Jakob Rademachers, Hans-Ulrich Hofs, Dieter Rade
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Patent number: 5082498Abstract: Solid pigment formulations containing from 70 to 97% by weight, based on the total weight of the formulation, of one or more pigments and also from 3 to 30% by weight, based on the total weight of the formulation, of at least one surfactant which is an adduct of ethylene oxide and optionally propylene oxide with ethylenediamine, the proportion of ethylene oxide being from 46 to 100% by weight, based on the total weight of ethylene oxide and propylene oxide in the adduct, and the adduct having an average molecular weight of from 5000 to 40,000, are useful for pigmenting printing ink and gloss paint compositions.Type: GrantFiled: May 29, 1990Date of Patent: January 21, 1992Assignee: BASF AktiengesellschaftInventors: Walter Kurtz, Karl Muench, Joachim Kranz, Horst Belde
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Patent number: 5076846Abstract: An aqueous suspension of minerals and/or fillers and/or pigments having a solid content .gtoreq.60% by weight, the mineral or the filler or the pigment being dispersed with one or more dispersing agents, is characterized in that the dispersing agent contains one or more amphoteric polyelectrolytes and/or cationic polyelectrolytes and/or amphoteric cationoic polyelectrolytes and/or amphoteric anionic polyelectrolytes and/or partially neutralized anionic polyelectrolytes and/or partially neutralized amphoteric anionic polyelectrolytes, the filler and/or pigment and/or mineral particles carrying a charge neutral or positive to the outside.Furthermore is disclosed a process characterized in that a part of the polyelectrolytes according to the invention is added before the grinding, a part thereof may be added during the grinding and a part thereof may be added after the grinding. According to the invention grinding and dispersing is achieved in only one process step.Type: GrantFiled: June 6, 1990Date of Patent: December 31, 1991Assignee: Pluss-Staufer AGInventors: Matthias Buri, Daniel Frey
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Patent number: 5074917Abstract: Novel Pigmentary colorants, well adapted for the production of electrostatic developer powders and dentifrices, are comprised of coprecipitated/crystallized mineral oxide particulates and at least one dye. The at least one dye is at least partly physically confined within a matrix of the mineral oxide.Type: GrantFiled: March 29, 1989Date of Patent: December 24, 1991Assignee: Rhone-Poulenc ChimieInventor: Jacques Persello
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Patent number: 5021091Abstract: A hard coating composition comprising an organic silicon compound and inorganic submicron particles such as silica sol and antimony oxide sol is improved in curing properties and shelf stability by blending aluminum perchlorate as the curing catalyst.Type: GrantFiled: January 16, 1990Date of Patent: June 4, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Mitsuhiko Takarada, Kazuharu Sato, Kenji Yamamoto, Shigeru Mori
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Patent number: 5017231Abstract: A heat-resistant pigment can be produced by forming a dense and uniform coating on the surface of the pigment by contacting a hydrophilic pigment with a metal oxide in at least partly water-miscible solvent.Type: GrantFiled: January 3, 1990Date of Patent: May 21, 1991Assignee: Mitsubishi Kinzoku Kabushiki KaishaInventors: Akira Nishihara, Makoto Tsunashima
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Patent number: 4999055Abstract: An improved inorganic pigment (e.g., TiO.sub.2), process for treating such pigment and polymer (e.g., polyethylene, polypropylene or polystyrene) incorporating such pigment wherein the inorganic pigment is coated with maleic, malonic, benzoic, fumaric, or phthalic acid or mixtures thereof. The coated pigments exhibit excellent resistance to polymer yellowing or discoloration and do not appear to degrade polymer properties.Type: GrantFiled: September 6, 1989Date of Patent: March 12, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Dwight A. Holtzen, Austin H. Reid, Jr.
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Patent number: 4935502Abstract: When a diamine of the formula ##STR1## in which n is 1 to 4, is bis-diazotized and the resulting bis-diazo compound is coupled with 2 moles of one or more coupling components of the formula ##STR2## in which R.sup.1 is hydrogen, chlorine, bromine, methyl or methoxy and R.sup.2 is hydrogen or, if R.sup.1 is hydrogen, also methyl or ethyl, disazo compounds are obtained which are colorants. Due to their high fastness to light and to migration and their heat stability and dispersibility, these compounds are useful for pigmenting high molecular weight materials, especially polyolefins.Type: GrantFiled: August 22, 1989Date of Patent: June 19, 1990Assignee: Hoechst AktiengesellschaftInventors: Rudolf Kuhne, Heinrich Hamal
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Patent number: 4894092Abstract: A heat-resistant pigment can be produced by forming a dense and uniform coating on the surface of the pigment by contacting said pigment with a metal alkoxide diluted with a water-miscible or semi-water-miscible solvent.Type: GrantFiled: April 14, 1987Date of Patent: January 16, 1990Assignee: Mitsubishi Kinzoku Kabushiki KaishaInventors: Akira Nishihara, Makoto Tsunashima
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Patent number: 4885034Abstract: In a process for producing a composite TiO.sub.2 pigment which contains a white inert extender, the neutralization is simplified and the need for washing processes is eliminated in that a metatitanic acid suspension, which contains free and combined sulfuric acid and has been purified for the removal of chromophoric elements, is neutralized by an addition of calcium oxide and/or barium oxide in quantities which are stoichiometric with respect to total sulfate, the calcium sulfate and/or barium sulfate is precipitated in an intimate mixture with the metatitanic acid, and the coprecipitate is separated and dried. The precipitated calcium sulfate and/or barium sulfate is contained in the coprecipitate in an amount from 1 to 25% by weight.Type: GrantFiled: August 24, 1987Date of Patent: December 5, 1989Assignee: Metallgesellschaft AktiengesellschaftInventors: Wolfgang Kreth, Wolf-Dieter Griebler
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Patent number: 4870164Abstract: Symmetrical and asymmetrical disazo compounds of the formula: ##STR1## wherein: the R.sup.1 's are identical or different and are hydrogen, chlorine, bromine, methyl or methoxy;the R.sup.2 's are hydrogen, or, if the R.sup.1 's are hydrogen, the R.sup.2 's are hydrogen, methyl or ethyl, the two R.sup.2 radicals being identical or different; andn is 1 to 4and mixtures of such compounds as colorants, especially for pigmenting high molecular weight organic material.Type: GrantFiled: January 28, 1985Date of Patent: September 26, 1989Assignee: Hoechst AktiengesellschaftInventors: Rudolf Kuhne, Heinrich Hamal
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Patent number: 4832944Abstract: Pigmented nail enamels in which the pigment is coated with an organo-polysiloxane exhibit greatly reduced settling and migration of the pigment.Type: GrantFiled: December 3, 1986Date of Patent: May 23, 1989Assignee: Revlon Inc.Inventors: Robert L. Socci, Anatoly A. Ismailer, Anthony Castrogiovanni
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Patent number: 4775420Abstract: Complex pigment compositions for the coating of paper, comprising an aqueous phase, at least one pigment of mineral origin, a binding agent, optionally various customary additives, and a dispersing agent comprised of carboxyl-containing polymers which are water soluble and are converted to form salts. The polymers are obtained by known polymerization processes. The dispersing agent(a) has a specific viscosity (measured on the sodium salt) of between 0.25 and 2; and(b) is converted to the salt form to the extent of at least 60% by at least one salt-forming agent which has a polyvalent function.These complex pigment compositions have very low viscosities. They may also simultaneously contain diverse pigments, such as kaolin, titanium dioxode, and calcium carbonate, without suffering the usual increase in viscosity and the risk of setting.Type: GrantFiled: March 30, 1987Date of Patent: October 4, 1988Assignee: Coatex, S.A.Inventors: Olivier Gonnet, Jean Vallas
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Patent number: 4769079Abstract: A water-insoluble pigment comprising a complex of an inorganic water-insoluble anion exchange material and a water-soluble dye is disclosed. The anion exchange material may be represented by the general formula:[M.sub.1-x.sup.a Q.sub.x.sup.a+1 O.sub.y (OH).sub.z ](A.sup.-1).sub.d (A.sup.-2).sub.e (A.sup.-3).sub.f (A.sup.-4).sub.g.nH.sub.2 Owherein M is a metal element or elements each with a positive valence of a; Q is a metal element or elements each with a positive valence of a+1; a is 2, 3, 4 or 5; A.sup.-1, A.sup.-2, A.sup.-3, and A.sup.-4 are each one or more exchangeable anions each having a negative valence of 1, 2, 3 and 4, respectively; x is 0<x.ltoreq.0.5; and n, y, z, d, e, f, and g are real numbers greater than or equal to zero and satisfy the following:2y+z=a0<d+2e+3f+4g.ltoreq.x0.ltoreq.n.ltoreq.10provided that when y=0, a is not equal to 2.Type: GrantFiled: June 20, 1986Date of Patent: September 6, 1988Assignee: The Dow Chemical CompanyInventors: Howard W. Clark, Tracy E. Chapman, Ronald L. Yates
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Patent number: 4762568Abstract: A pigment composition contains a pigment and a dispersant. The dispersant is a phosphoric ester compound represented by the following general formula: ##STR1## wherein at least one of the three Rs is a residuum of a polyester chain containing as principal bonds thereof ester bonds of a polycarboxylic acid and a polyalcohol.Type: GrantFiled: August 12, 1987Date of Patent: August 9, 1988Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Michiei Nakamura, Hitoshi Takeuchi, Tetsujiro Takahashi, Yoshitake Kori, Minoru Takizawa, Takamitsu Shinoda, Shojiro Horiguchi