Organic Material Containing Patents (Class 106/460)
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Patent number: 5672201Abstract: A process for preparing a structured composite pigmentary material comprises forming a dispersion of uncoated particles of titanium dioxide at a pH value at which the particles have a surface charge and subjecting the dispersion to cross-flow filtration until the dispersion contains more than 50% by weight titanium dioxide. The concentrated dispersion is mixed with a dispersion of chemically distinct particles having a surface charge of opposite sign under conditions which ensure that the sign of the surface charge on either of the particulate materials is not reversed. In the resultant composite pigmentary material the titanium dioxide particles are held in association with the chemically distinct particles as a result of said surface charges.Type: GrantFiled: March 5, 1996Date of Patent: September 30, 1997Assignee: Tioxide Group Services LimitedInventors: Leslie Ainsley Simpson, Keith Robson, David Trevor Knight, Ronald Brown
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Patent number: 5667579Abstract: The present invention relates to iron oxide pigments with an Fe(II) content of at least 5 wt. %, calculated as FeO, which have at least one inorganic after-treatment layer and at least one organic after-treatment coating, a process for preparing these iron oxide pigments and their use.Type: GrantFiled: June 5, 1996Date of Patent: September 16, 1997Assignee: Bayer AGInventors: Wolfgang Oehlert, Friedrich Jonas, Gunter Buxbaum
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Patent number: 5653795Abstract: A method is disclosed for producing bulking and opacifying pigments for filling paper by the selective aggregation of fine particles in an anionically or cationically dispersed slurry, such that an aggregated structure is formed which contains within it a labyrinth of internal voids or pores. The aqueous slurry is formed at one to thirty percent solids. A low molecular weight agent of opposite ionic charge is then added to the slurry to selectively aggregate the fine particles present. The resultant aggregates are of larger mean particle size than the feed material and contain little or no fine and colloidal particles. The net charge present on the aggregated particles is lower than that of the feed material.Type: GrantFiled: November 16, 1995Date of Patent: August 5, 1997Assignee: Columbia River CarbonatesInventor: Alan J. Brown
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Patent number: 5639296Abstract: Thixotropic particle suspensions are prepared by controlling the quantity of dispersant composition used for particle coating to an amount which is less than that quantity that would provide a full coating of dispersant on all particles suspended.Type: GrantFiled: October 25, 1994Date of Patent: June 17, 1997Assignee: Sandia CorporationInventor: Terry J. Garino
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Patent number: 5634971Abstract: A process of dispersing a pigment consists of agitating a pigment in water with a polyoxyalkylated ether dispersant. The polyoxyalkylated ether comprises Units of the formulae A and B whereinUnit A is an alkyl group of the formula: ##STR1## and; Unit B is an oxyalkylate of the formula:(OCH.sub.2 CHR.sub.2).sub.y OR.sub.3 (IB)wherein R and R.sub.1 individually represent hydrogen or a C.sub.1 -C.sub.10 alkyl group; R.sub.2 is --H or a C.sub.1 -C.sub.5 alkyl group; x represents a number from about 9 to about 75; R.sub.3 is --H or a C.sub.1 -C.sub.5 alkyl group; and y is between about 1 to about 475.Type: GrantFiled: October 25, 1995Date of Patent: June 3, 1997Assignee: Petrolite CorporationInventor: Timothy J. Baker
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Patent number: 5587011Abstract: This invention involves a method of optically whitening clay minerals to transform their natural yellow tint to increased whiteness. Generally, it has been found that clay materials having low cation exchange capability can be directly reacted with very small amounts of cationic dyes, the apparent whiteness of said clay minerals being substantially increased thereby.Type: GrantFiled: April 6, 1995Date of Patent: December 24, 1996Assignee: J. M. Huber CorporationInventors: Carl J. Marshall, Jr., Gary M. Freeman
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Patent number: 5567233Abstract: Ballpoint pen pastes are prepared comprising at least one colored metal oxide pigment and customary ballpoint pen paste resin and organic solvent as essential components and also, if desired, further customary additives.Type: GrantFiled: June 7, 1995Date of Patent: October 22, 1996Assignee: BASF AktiengesellschaftInventors: Karin H. Beck, Helmut Bellaire, Claudius Kormann, Rainer Dyllick-Brenzinger
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Patent number: 5554215Abstract: A composite particulate pigmentary material is disclosed which comprises an association of at least two chemically distinct materials in which the particles of one material carry a positive surface charge and the particles of the second material carry a negative surface charge and particles are held in association as a result of these surface charges. Also disclosed is a method for preparing composite particulate pigmentary material comprising forming aqueous dispersions of two particulate materials under conditions in which the surface charges of the particles of the two materials are of different signs and mixing the dispersions. Typical materials useful for preparing the composite include inorganic pigments, fillers and extenders and organic polymeric microspheres. The product is useful as a pigment in, for example, paints, inks, paper and plastics.Type: GrantFiled: June 7, 1995Date of Patent: September 10, 1996Assignee: Tioxide Specialties LimitedInventors: Leslie A. Simpson, John Robb, Jonathan Banford, Paul F. Dietz, John Temperley
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Patent number: 5486233Abstract: A pigment composition includes a pigment extender which optionally contains a pigment, and further includes a non-hydrogenated phospholipid material, such as non-hydrogenated lecithin, and a surface modifying agent. Suitable modifying agents are selected from fatty acids, fatty acid esters or fatty acid triglycerides, silicones and mixtures thereof.Type: GrantFiled: October 28, 1993Date of Patent: January 23, 1996Assignee: Western Mining Corporation LimitedInventors: Lance S. Mitchell, Mary Ann Nordhauser, Justin M. Willis
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Patent number: 5484481Abstract: The present invention relates to a process for the coloration of building materials such as concrete or asphalt by granulated inorganic pigments.Type: GrantFiled: October 17, 1994Date of Patent: January 16, 1996Assignee: Bayer AGInventors: Gunter Linde, Manfred Eitel
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Patent number: 5449403Abstract: A product in the form of colored inorganic particles including one or a number of melanin pigments, a process for its preparation and to its use, especially in the field of cosmetics, for make-up for the exoskeleton and/or for the skin, and in protecting human skin against UV radiation.Type: GrantFiled: January 3, 1994Date of Patent: September 12, 1995Assignee: L'OrealInventors: Herve Andrean, Alex Junino, Jean P. Arraudeau
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Patent number: 5401313Abstract: This invention relates to modifying the surface of particles for improved dispersion characteristics in aqueous, solvent, resinous, polymeric, cementitious or the like application systems. In particular, this invention relates to a pigment or filler particle whose surface is coated with at least one electric charge modifying agent and at least one dispersion promoting agent, which has improved dispersibility, coloring, handling, and other processing properties in application systems. The electric charge modifying agent may be selected from the group of Mg, Ca, Ba, Sr, Ti, V, Zr, Cr, Mn, Fe, Co, Ni, Cu, Zn, and Al. The dispersion promoting agent may be selected from the group of stearates, acetates, alkylphenols, cellulosics, waxes, lignins, polyacrylics, polyepoxies, polyurethanes, polyethylenes, polystyrenes and polypropylenes, and polymers having functional groups of alcohols, glycols, aldehydes, amides and carboxylic acids. Iron oxide is the preferred pigment particle.Type: GrantFiled: February 10, 1993Date of Patent: March 28, 1995Assignee: Harcros Pigments, Inc.Inventors: William W. Supplee, James T. Will, Jr.
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Patent number: 5380359Abstract: A melanin-coated pigment obtained by coating a carrier with a readily alkali-soluble natural melanin, and a cosmetic containing the pigment are provided. The melanin-coated pigment is highly safe and has high coloring and high saturation tone, and a cosmetic which contains it is also expected to have ultraviolet-ray-absorbing and anti-oxidizing effects.Type: GrantFiled: November 24, 1993Date of Patent: January 10, 1995Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Shinkichi Honda, Yoichiro Takekoshi, Yoichiro Arai
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Patent number: 5376172Abstract: A process for preparing silane metal oxides comprising reacting a metal oxide with an amine compound to form an amine metal oxide intermediate, and subsequently reacting said intermediate with a halosilane.Type: GrantFiled: December 23, 1992Date of Patent: December 27, 1994Assignee: Xerox CorporationInventors: Carl P. Tripp, Michael L. Hair, Richard P. N. Veregin
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Patent number: 5324354Abstract: Pigment formulations contain a) a finely divided pigment, b) at least one colorant which has at least one external basic group, c) at least one acidic and/or neutral phosphoric ester and d) if required, further assistants conventionally used in such formulations. The formulations are used for pigmenting printing inks and lakes.The printing inks, pastes and lakes produced using the formulations have substantially better flow behavior than the inks and lakes obtained using prior art pigments.Type: GrantFiled: August 5, 1991Date of Patent: June 28, 1994Assignee: BASF AktiengesellschaftInventors: Joachim Jesse, Juan A. Gonzalez Gomez, Gustav Bock, Paul Guenthert
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Patent number: 5310578Abstract: A process for coating the surface of pigment and filler particles with an oleaginous and cosmetically functional material, characterized in that an aqueous suspension of the pigment or filler is mixed with an emulsion of said oleaginous material to be coated onto the surface of pigment or filler particles, followed by adding a component capable of breaking the emulsion to the thus obtained mixture, whereby the emulsified material coalesces onto the surface of the pigment or filler particles. The thus obtained pigments or fillers exhibit excellent properties when used in cosmetics.Type: GrantFiled: September 17, 1990Date of Patent: May 10, 1994Assignee: Merck Patent GesellschaftInventors: Angelika Thurn-Muller, Jane Hollenberg, Ian Scott
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Patent number: 5300146Abstract: Iron oxide pigments are made stable against oxidation and discoloration by a coating process. Preferred coating compounds are maleic acid hydrazide and phthalic acid.Type: GrantFiled: November 16, 1992Date of Patent: April 5, 1994Assignee: Bayer AGInventors: Friedrich Jonas, Andreas Frankenau, Gunter Buxbaum
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Patent number: 5284512Abstract: Water soluble salts of a .beta.-polyaspartic acid, i.e., a polyaspartic acid having predominantly beta linkages in the amino acid residue chain thereof, are eminently well suited as dispersants for particulate matter in an aqueous medium.Type: GrantFiled: February 16, 1993Date of Patent: February 8, 1994Assignee: Donlar CorporationInventors: Larry P. Koskan, Kim C. Low
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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: 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: 5199983Abstract: Disclosed herein are black pigment particles comprising polycrystalline particles having a mixed composition of Fe.sub.2 TiO.sub.5 and Fe.sub.2 O.sub.3 --FeTiO.sub.3 solid solution.Type: GrantFiled: March 26, 1992Date of Patent: April 6, 1993Assignee: Toda Kogyo Corp.Inventor: Tsutomu Katamoto
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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: 5178785Abstract: A new heat sink composition having relatively high volumetric heat capacity and relatively high density have been prepared. The compositions comprise a set of formulas including: a) 50-95% oxide of iron and 50-5% of a mixture of clay, an organic binder or an inorganic binder, where said mixture can contain any portion of clay, organic binder or inorganic binder in any proportions provided the mixture adheres to the 50-5% compositional range; b) 15-95% oxide of iron and 85-5% of clay; c) 15-85% oxide of iron, 10-2% of a transition metal oxide other than iron and 75-13% inorganic binder; and d) 50-80% oxide of iron, 15-5% of talc and 35-15% clay. The compositions show good dried and fired properties and can even be loaded and fired in-situ because they possess good dried crush strength.Type: GrantFiled: September 12, 1991Date of Patent: January 12, 1993Assignee: Norton CompanyInventors: Michael J. Dolan, Carmine M. Doddato, Kenneth R. Butcher
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Patent number: 5143548Abstract: Disclosed herein is a coating composition comprising plate-like iron oxide particles having an average particle diameter of 4 to 25 .mu.m, a lamellar thickness of 0.16 to 5 .mu.m and a plate ratio (average particle diameter:lamellar thickness) of 5:1 to 25:1, at least one pigment selected from the group consisting of a coloring pigment,a mica pigment and a metal powder pigment, a film-forming polymer, and an organic solvent.Type: GrantFiled: December 3, 1991Date of Patent: September 1, 1992Assignees: Toda Kogyo Corp., Dainichiseika Color & Chemicals Mfg. Co. Ltd.Inventors: Ken Okura, Satoru Matsuzaki, Tsutomu Katamoto, Nanao Horiishi
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Patent number: 5112403Abstract: Disclosed herein is a coating composition comprising plate-like iron oxide particles having an average particle diameter of 0.5 to 5.0 .mu.m, a lamellar thickness of 50 to 500.ANG. and a plate ratio (the ratio of the average particle diameter to the lamellar thickness) of 50:1 to 500:1, at least one pigment selected from the group consisting of a coloring pigment, a mica pigment and a metal powder pigment, a film-forming polymer, and an organic solvent.Type: GrantFiled: September 11, 1991Date of Patent: May 12, 1992Assignees: Toda Kogyo Corp., Dainic Iseika Color & Chemicals Mfg. Co. LtdInventors: Ken Okura, Satoru Matsuzaki, Tsutomu Katamoto, Nanao Horiishi
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Patent number: 4966641Abstract: Iron oxide black pigment with improved color intensity is produced by subjecting finely divided pigment obtained from reaction of metallic iron with aromatic nitro compounds to a heat treatment of 200.degree. to 800.degree. C. under a non-oxidizing atmosphere for a time of 2 minutes to 5 hours.Type: GrantFiled: December 7, 1988Date of Patent: October 30, 1990Assignee: Bayer AktiengesellschaftInventors: Axel Westerhaus, Karl-Werner Ganter, Gunter Buxbaum
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Patent number: 4952617Abstract: A pigment dispersion of enhanced viscosity and heat stability characteristics for use in coating systems is provided. The pigment dispersions generally comprise a pigment carrier, a pigment of the type having a hydrophilic surface, and a surfactant functional as a dispersant in a relatively non polar matrix and which is present on the surface of the pigment in an effective amount. Pigment carriers include water-based carriers and organic solvent-based carriers. Finished coatings having improved viscosity and heat stability are also provided. The finished coatings comprise a coating base and the surfactant treated pigments. Such pigments include iron oxide pigments yellow iron oxide pigment, black iron oxide pigment, divalent ferrite pigments, zinc ferrite pigment, and magnesium ferrite pigment. Such surfactants include trimethylol propane, and trimethylol ethane.Type: GrantFiled: January 17, 1989Date of Patent: August 28, 1990Assignee: Columbian Chemicals CompanyInventors: Jorge A. Ayala, George A. Joyce
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Patent number: 4834800Abstract: An improved powder composition of an iron-based powder and an alloying powder is provided. Segregation and dusting of the alloying powder is eliminated or substantially reduced when the powder composition contains a polymeric binding agent which is an adherent film-former and which is insoluble in water.Type: GrantFiled: October 15, 1986Date of Patent: May 30, 1989Assignee: Hoeganaes CorporationInventor: Frederick J. Semel
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Patent number: 4769080Abstract: A water-insoluble pigment comprising a complex of an anion exchange material with a layered crystal structure and a water-soluble dye is disclosed. The anion exchange material may be represented by the general formula:[M.sub.x.sup.+1 Q.sub.y.sup.+2.Al(OH).sub.3 ](A.sup.-1).sub.d (A.sup.-2).sub.e (A.sup.-3).sub.f (A.sup.-4).sub.g.nH.sub.2 Owhere M is a metal element or elements each with a positive valence of 1; Q is a metal element or elements each with a positive valence of 2; 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; and n, x, y, d, e, f, and g are real numbers greater than or equal to zero and satisfy the following:0<x+2y.ltoreq.1d+2e+3f+4g=x+2y0.ltoreq.n.ltoreq.Type: GrantFiled: June 20, 1986Date of Patent: September 6, 1988Assignee: The Dow Chemical CompanyInventors: Howard W. Clark, Tracy E. Chapman
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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
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Patent number: 4758415Abstract: The subject matter of this invention relates to a process for removing the soluble metal cations contained in iron oxide pigments comprising washing said iron oxide pigments with a ligand compound having a pH greater than 6.0. The pigments can be used as colorants for substances ingested by man and animals, and they can also be used to stabilize plastics against ultraviolet degradation, and as pigments in base-coat clear-coat automotive finishing operations.Type: GrantFiled: May 10, 1985Date of Patent: July 19, 1988Assignee: BASF CorporationInventor: Arvind S. Patil