Nitrogen Ring Is Part Of A Ring System Having Five Or More Rings Fused Or Bridged Together Patents (Class 524/90)
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Patent number: 5004759Abstract: Macrocyclic polyaminotriazines containing tetramethylpiperidine side groups are suitable for use as stabilisers, in particular against degradation by UV light, for polyphenylene ethers. They have the advantage that they do not impair, or impair only to an insignificant degree, the dimensional stability under heat of these polymers.Type: GrantFiled: June 28, 1988Date of Patent: April 2, 1991Assignee: Ciba-Geigy CorporationInventors: Francis Mutterer, Kurt Berger
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Patent number: 4994323Abstract: Colored, high strength, high modulus p-aramid fibers are prepared by including an organic pigment which is soluble in but not degraded by concentrated sulfuric acid in a p-aramid spinning dope wherein the solvent is concentrated sulfuric acid and spinning the pigment containing dope through an air gap into a coagulation bath and washing and drying the resulting fibers. The dissolved pigment is precipitated by the coagulation bath as particles with a diameter of less than 0.50 microns.Type: GrantFiled: August 1, 1988Date of Patent: February 19, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 4973606Abstract: A membrane of an organic polymer, which contains a crystalline carrier compound capable of selective transport of low molecular weight substances, and the preparation and use of the said membrane.Type: GrantFiled: November 17, 1988Date of Patent: November 27, 1990Assignee: BASF AktiengesellschaftInventors: Hans-Josef Sterzel, Axel Sanner
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Patent number: 4939193Abstract: The .alpha.-modification of cis-naphthoylenebis(benzimidazole) is unstable in many media and up to date has therefore only been used as a vat dye. However, according to the invention, the .alpha.-modification can readily be used for pigmenting in the mass polyolefins such as polyethylene, polypropylene or analogous copolymers. During pigmenting, the pigment which is prepared in a conventional manner, is stable in that modification and produces strong red dyeings.Type: GrantFiled: October 6, 1988Date of Patent: July 3, 1990Assignee: Hoechst AktiengesellschaftInventors: Erwin Dietz, Siegfried Schiessler
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Patent number: 4931220Abstract: Described is photochromic particulate material comprising a photochromic substance within a matrix of a polymerizate of a polyfunctional acrylate monomer. The photochromic particulate material may be produced by adding an organic photochromic substance to a polymerizable composition including a polyfunctional acrylate monomer and polymerizing the resultant admixture, e.g., by emulsion polymerization. In the case of emulsion or suspension polymerization, finely divided particulate organic photochromic materials are separated from the polymerization medium in the form of spheroidal thermoset photochromic particles of fairly uniform size. If desired, the particles recovered from the polymerization medium may be further ground in conventional attrition mills to further reduce the size of the particulate product. In the case of bulk polymerization, the polymerizate may be formed as a continuously cast sheet, which is then pulverized to a particulate material of pigmentary size.Type: GrantFiled: November 24, 1987Date of Patent: June 5, 1990Assignee: PPG Industries, Inc.Inventors: Ronald L. Haynes, Charles H. Hoelscher, Jonathan G. Lasch
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Patent number: 4898899Abstract: An adhesive composition comprises a polymerizable monomer having an acryloyl or methacryloyl group, a polymerization initiator, and at least one compound selected from the group consisting of chlorophyll, metal-substituted chlorophyll, cylorophyllin salt and phthalocyanine complex unsubstituted or substituted on a benzene nucleus thereof. The adhesive composition anaerobically cures at room temperature, rapidly adheres to various materials, and has a long pot life even under a hot and humid environment.Type: GrantFiled: December 5, 1988Date of Patent: February 6, 1990Assignee: Toagosei Chemical Industry Co.Inventor: Yasuji Isobe
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Patent number: 4883714Abstract: An aqueous printing ink or its semi-aqueous or non-aqueous concentrate exemplified as comprising a substantially homogeneous system of the components:(1) from about 4 to about 80 weight % of one or more polyester materials having an acid component of from about 75 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof;(2) from about 1 to about 60 weight % of pigment material;(3) from substantially none to about 90 weight % of water; and(4) from about 0.05 to about 30.0 weight % of polyvinyl alcohol.Type: GrantFiled: January 9, 1989Date of Patent: November 28, 1989Assignee: Eastman Kodak CompanyInventors: Rebecca R. Stockl, Kenneth R. Barton, Melvin A. Caldwell
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Patent number: 4855344Abstract: An aqueous printing ink or its semiaqueous or substantially nonaqueous concentrates exemplified as comprising a substantially homogeneous system of the components:(1) from about 4 to about 90 weight % of one or more polyester materials having an acid component of from about 75 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof;(2) from none to about 70 weight % of pigment material;(3) from about 0.01 to about 90 weight % of water; and(4) one or more acetylacetonates of the formula M[CH--(COCH.sub.3).sub.2 ].sub.n wherein M is Al, Zr, Ni, Ca, V, or Fe, and n is the chemical valence of M, the weight ratio of polyester to total acetylacetonates being from about 10,000/1 to about 10/1.Type: GrantFiled: May 16, 1988Date of Patent: August 8, 1989Assignee: Eastman Kodak CompanyInventors: David L. Nealy, Louis A. Wilkin, Fred D. Barlow, Jr.
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Patent number: 4830778Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400%, preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio as solid content of (A) to (B) being 70-99:30-1.Type: GrantFiled: January 14, 1987Date of Patent: May 16, 1989Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Shosaku Yamamoto, Kazuo Kakinuma
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Patent number: 4812492Abstract: Aqueous pigment preparations which contain (a) 5 to 80% by weight of a finely-divided inorganic and/or organic pigment, (b) 5 to 80% by weight of an aequeous polyurethane dispersion, (c) 2 to 80% by weight of water and (d) 0 to 50% by weight of an organic solvent.Type: GrantFiled: July 27, 1987Date of Patent: March 14, 1989Assignee: Hoechst AktiengesellschaftInventors: Helmut Eckes, Rainer Winter, Albert Munkel
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Patent number: 4791153Abstract: A molding resin composition for preparing molded pieces which are suited to laser masking. The composition comprises a thermosetting resin, a curing agent, an inorganic white filler and 0.1 to 3% by weight of a coloring agent represented by the formula (I) ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, substituted or unsubstituted sulfonamido or SO.sub.2 CH.sub.3 ; R.sub.3 and R.sub.4 are each hydrogen, C.sub.1 -C.sub.8 alkyl, or substituted or unsubstituted carbonamido; M is Cr, Fe or Co; and A is H, NH.sub.4, ammonium ion of a primary, secondary or tertiary amine or quaternary ammonium ion.Type: GrantFiled: December 28, 1987Date of Patent: December 13, 1988Assignee: Orient Chemical Industries, Ltd.Inventor: Sshunichiro Yamanaka
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Patent number: 4769460Abstract: Process for preparing perylenetetracarbimide mix-crystal pigments in the crystal lattice of the .alpha.-modification of the N,N'-bis-3',5'-dimethylphenylperylenetetracarbimide of the formula (1) comprising essentially symmetrical N,N'-bis-3',5'-dimethylphenylperylenetetracarbimide of the formula (1) and at least one asymmetrically substituted diimide of the formula (2) in which R stands for methyl or ethyl ##STR1## by condensing 1 mole of perylenetetracarboxylic dianhydride with an excess of up to 30 moles of 3,5-dimethylaniline which contains in total 0.5-6 percent by weight of 4-ethoxyaniline, and their use for coloring organic polymers.Type: GrantFiled: January 20, 1988Date of Patent: September 6, 1988Assignee: Hoechst AktiengesellschaftInventors: Ernst Spietschka, Helmut Troster
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Patent number: 4742170Abstract: Perylenetetracarbimide mix-crystal pigments in the crystal lattice of the .alpha.- Modification of N,N'-bis-3',5'-dimethylphenylperylenetetracarbimide of the formula (1) comprising 98-70 mole percent of the symmetrical diimide of the formula (1) and correspondingly 2-30 mole percent of at least one asymmetrical diimide of the formula (2) ##STR1## in which R denotes a hydrogen atom or a methyl group.Type: GrantFiled: October 1, 1985Date of Patent: May 3, 1988Assignee: Hoechst AktiengesellschaftInventors: Ernst Spietschka, Helmut Troster
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Patent number: 4731400Abstract: A thermoplastic resin composition having excellent transparency and a high ultraviolet transmittance and free from a reddish color is obtained from a polymer or copolymer of 4-methyl-1-pentene and a blue pigment. Preferably, the composition further comprises a black pigment and/or a red pigment.Type: GrantFiled: December 16, 1985Date of Patent: March 15, 1988Assignee: Mitsui Petrochemical Industries, Ltd.Inventor: Hiromi Shigemoto
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Patent number: 4720356Abstract: An organic photochromic composition comprising spiro [indoline-2,3'-[3H]-naphth [2,1-b] [1,4] oxazine] dye (spirooxazine dye) and unconventional ultraviolet stabilizers. The ultraviolet stabilizers improve the light fatigue resistance of the spirooxazine (S.O.) dye and will not hinder the photocolorability of the photochromic composition. The unconventional ultraviolet stabilizers belong to the class of hindered amine light stabilizers (HALS) and excited state quenchers.Type: GrantFiled: June 4, 1987Date of Patent: January 19, 1988Assignee: American Optical CorporationInventor: Nori Y. C. Chu
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Patent number: 4639477Abstract: Process for mass-coloring high-molecular organic material, which comprises using a metal complex of the formulae I and/or Ia ##STR1## in which R is a hydrogen or chlorine atom or a methyl or methoxy group, R.sub.1 is a hydrogen atom, C.sub.1 -C.sub.4 -alkyl or phenyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, --NO.sub.2, --CONH.sub.2 --CONHR.sub.2 or C.sub.2 -C.sub.5 -N-alkylcarbamoyl, X is --CH.dbd. or --N.dbd., M is a divalent transition metal, and A is phenyl or substituted phenyl and R.sub.2 is alkyl, phenyl or substituted phenyl.The resulting colorations are distinguished by high tinctorial strength and good fastness properties, such as light, weathering and migration fastness properties.Type: GrantFiled: June 13, 1985Date of Patent: January 27, 1987Assignee: Ciba-Geigy CorporationInventors: Georg Cseh, Paul Lienhard
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Patent number: 4602052Abstract: A rubber composition containing carbon black as a reinforcing filler and a quaternary ammonium salt as a coupling agent and a method of making it are disclosed.Type: GrantFiled: September 17, 1984Date of Patent: July 22, 1986Assignee: Amoco CorporationInventors: Kenneth E. Weber, Dirk Oberlin
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Patent number: 4598105Abstract: A rubber composition containing carbon black and a second particulate filler of kaolin, metakaolin, talc, pyrophyllite coal, coke, graphite or metal carbonate filler and a method of making it are disclosed.Type: GrantFiled: September 17, 1984Date of Patent: July 1, 1986Assignee: Amoco CorporationInventors: Kenneth E. Weber, Dirk Oberlin
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Patent number: 4579893Abstract: Disclosed are compounds having the formula ##STR1## wherein X is the residue of a benzoxazole radical;Y is carboxyl, alkoxycarbonyl, alkanoyl, cyano, carbamoyl, N-alkylcarbamoyl or N,N-dialkylcarbamoyl; andA is phenyl, naphthyl or phenyl or napthyl substituted with one or more substituents selected from hydroxy, halogen, alkyl, alkoxy, cycloalkyl, aryl, aryloxy or Y. Also disclosed are polymeric materials stabilized against degradation by ultraviolet light by the incorporation therein of one or more of the above-defined compounds.Type: GrantFiled: January 6, 1984Date of Patent: April 1, 1986Assignee: Eastman Kodak CompanyInventors: Richard H. S. Wang, Michael Bellas, William W. Blount, Jr.
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Patent number: 4563492Abstract: A resinous composition for coating use comprising an amphoteric resin having an acidic resinous component and a basic component of a basic compound, and an amino-formaldehyde resin etherified with monohydric alcohol having 1 to 4 carbon atoms and/or isocyanate compound, which is characterized by the fact that the basic component of a said amphoteric resin consists of a basic compound whose titration midpoint potential in non-aqueous potentiometric titration, when incorporated into the resin, is less than 450 mV, and the basicity of the amphoteric resin is within the range of 1.0.times.10.sup.-2 to 1.0 m mol/g solid. This composition can exhibit excellent pigment dispersibility and is useful as resinous vehicle for a coating composition to be used as a top coat for automobile bodies and the like.Type: GrantFiled: January 30, 1984Date of Patent: January 7, 1986Inventors: Hirotoshi Umemoto, Hisaki Tanabe, Akihiro Kanakura, Shinji Nakano
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Patent number: 4548968Abstract: A process for preparing a resin extended pigment from crude pigment is disclosed. The process involves dry premilling the crude pigment with the resin followed by comilling the pre-milled pigment with the resin in the presence of water under alkaline conditions.Type: GrantFiled: June 1, 1984Date of Patent: October 22, 1985Assignee: Ciba Geigy CorporationInventor: Edward E. Jaffe
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Patent number: 4517249Abstract: A coating composition is described comprising a 1:2 chromium complex of a mono-AZO dye substituted with amino-phenol and coupled with 2-napthol in a thermosetting resin system. The composition when applied to a substrate imparts a super jet black coating which is non-bleeding, unaffected by the dispersion method or vehicle used, and is durable to the elements.Type: GrantFiled: June 4, 1984Date of Patent: May 14, 1985Assignee: Inmont CorporationInventor: Sol Panush
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Patent number: 4501829Abstract: A coating composition comprising (A) a polyester resin modified with a lactone having 6 to 8 ring carbon atoms (I) or a mixture of said lactone-modified polyester resin (I) and a non-modified polyester resin (II), the lactone content being from 5 to 40% by weight of the total polyester resin (in solid) (I) or (I+II), the number average molecular weight being 800.about.200 mg KOH/g and wherein the resinous acid value is 2.about.20 mg KOH/g, (B) a crosslinking agent, (C) a pigment and (D) optionally other resins. The composition is useful as an intercoat paint for automobile bodies.Type: GrantFiled: September 6, 1983Date of Patent: February 26, 1985Assignee: Nippon Paint Co., Ltd.Inventors: Shoji Oda, Kunihiko Ehara, Hirotoshi Umemoto, Shinji Nakano
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Patent number: 4492648Abstract: Light-collecting system, characterized in that it contains a dyestuff of the formula ##STR1## in which Hal designates identical or different halogen atoms from the series comprising fluorine, chlorine and bromine,R.sub.1 and R.sub.2 designate hydrogen or optionally substituted C.sub.1 -C.sub.18 -alkyl and n designates 4-5,and new dyestuffs of the formula I which in a 0.5-2 mM solution in path lengths of 10 cm display an increase in transmission from 0 to >95% with a change in the wavelength of 25-120 nm.Type: GrantFiled: December 7, 1982Date of Patent: January 8, 1985Assignee: Bayer AktiengelsellschaftInventor: Uwe Claussen
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Patent number: 4487869Abstract: A coating composition is described comprising a 1:2 chromium complex of a mono-AZO dye substituted with amino-phenol and coupled with a 2-napthol in a thermosetting resin system. The composition when applied to a substrate imparts a super jet black coating which is non-bleeding, unaffected by the dispersion method or vehicle used, and is durable to the elements.Type: GrantFiled: September 23, 1983Date of Patent: December 11, 1984Assignee: Inmont CorporationInventor: Sol Panush
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Patent number: 4478968Abstract: A process for preparing a resin extended pigment from crude pigment is disclosed. The process involves dry premilling the crude pigment either with or without the resin followed by comilling the premilled pigment with the resin in the presence of water under alkaline conditions. Preferably an organic liquid which wets the resin and the pigment and can improve the crystallinity of the pigment is present in the water milling step.Type: GrantFiled: April 6, 1983Date of Patent: October 23, 1984Assignee: Ciba-Geigy CorporationInventor: Edward E. Jaffe
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Patent number: 4446262Abstract: A photo-stabilized polymer composition comprising a polymer and as an ultraviolet absorber, at least one compound selected from specific cyclic imino esters having an aromatic nucleus, two carbon atoms of which forms a part of the imino ester ring, such as 2,2'-p-phenylene-bis(3,1-benzoxazin-4-one), or 2,8-dimethyl-4H,6H-benzo[1,2-d:5,4-d']bis-[1,3]-oxazine-4,6-dione, in the unreacted state. The ultraviolet absorber has excellent stability to heat and oxidation, and is useful, for example, for protecting from ultraviolet light a molded article of a polymer whose deterioration by ultraviolet light is required to be retarded or prevented or for protecting from ultraviolet light an object subject to deleterious effects under ultraviolet light.Type: GrantFiled: June 16, 1982Date of Patent: May 1, 1984Assignee: Teijin LimitedInventors: Nobuya Okumura, Tetsuo Ichihashi, Shunichi Matsumura, Hiroo Inata
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Patent number: 4443571Abstract: The six compositions, nickel-antimony-titanium, lead chromate-lead molybdate, quinacridone, monoazo-nickel complex, cobalt-zinc-silica, and lead chromate, provide a polyarylene sulfide composition containing one or more of these with high contrast laser printability.Type: GrantFiled: September 30, 1982Date of Patent: April 17, 1984Assignee: Phillips Petroleum CompanyInventors: Donald G. Needham, John E. Leland
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Patent number: 4439562Abstract: Disclosed is a mass-dyed polymeric material, e.g. polyester, comprising, as dyestuff, a compound or mixture of compounds of formula I ##STR1## herein the nuclei A, B and D may bear one or more substituents and Me is Ni or Cu. The mass-dyed polymeric material is preferably prepared by incorporating the compounds of formula I in form of a master-batch.Type: GrantFiled: August 16, 1982Date of Patent: March 27, 1984Assignee: Sandoz Ltd.Inventor: Hans Bohler
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Patent number: 4417013Abstract: A solid pigment composition comprises an intimate mixture of a pigment and a copolymer of an alkyl or cycloalkyl methacrylate ester and a lesser amount of an aminoalkyl methacrylate ester. The compositions are compatible with a wide range of substrates such as paints, printing inks and bulk polymers.Type: GrantFiled: January 18, 1982Date of Patent: November 22, 1983Assignee: Sandoz Ltd.Inventor: Johann Schuster
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Patent number: 4417014Abstract: The present invention provides dyestuffs of formula I, ##STR1## in which R.sub.1 is a mono- or bicyclic aromatic radical, and the ring A may bear up to 4 substituents conventional for dyestuffs, in which the dyestuff is free from sulphonic and carboxylic acid groups, and mixtures of such dyestuffs and their use as disperse dyestuffs.Type: GrantFiled: August 18, 1982Date of Patent: November 22, 1983Assignee: Sandoz Ltd.Inventor: Paul Buecheler
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Patent number: 4405734Abstract: The invention relates to a process for coloring water-insoluble thermoplastic plastics with dyestuffs of the formula ##STR1## The dyestuffs are added to the melt of the thermoplastic plastic or to its precursors.Type: GrantFiled: September 3, 1982Date of Patent: September 20, 1983Assignee: Hoechst AktiengesellschaftInventors: Otto Fuchs, Adolf Kroh, Wolfgang Teige
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Patent number: 4404385Abstract: Perylenetetracarboxylic acid-bis-(3,5-dimethylphenyl)imide in a novel .gamma.-modification characterized by an X-ray diffraction spectrum exhibiting very strong lines at interplanar spacings of 8.3, 3.61, 3.46 and 3.30 A, and strong lines at interplanar spacings of 17.2, 10.3, 7.2, 6.7 and 4.09.The pigment is suitable for dyeing high-molecular organic material. Compared with the known yellowish-red modifications, the .gamma.-modification is characterized by a bluish-red shade.Type: GrantFiled: June 23, 1980Date of Patent: September 13, 1983Assignee: Ciba-Geigy CorporationInventor: Fridolin Babler
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Patent number: 4404386Abstract: Process for the preparation of opaque perylenetetracarboxylic acid bis-(3,5-dimethylphenylimide), which comprises heating the .alpha.-modification of perylenetetracarboxylic acid bis-(3,5-dimethylphenylimide) in at least one aliphatic monocarboxylic acid. Use as a pigment for plastic compositions, printing inks, fibres and paints.Type: GrantFiled: June 12, 1981Date of Patent: September 13, 1983Assignee: Ciba-Geigy CorporationInventor: Fridolin Babler
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Patent number: 4371642Abstract: A process is disclosed for preparing resin extended pigments containing from 10% to 75% and preferably 25% to 50% by weight, based on the amount of pigment and resin present. The crude pigment and resin are premilled dry, such as in a ball mill, in a manner equivalent to that used to prepare small particle size highly aggregated pigment. Following premilling the pigment and resin are milled in an organic liquid capable of ripening the pigment particles to pigmentary size or simply improving their crystallinity which organic liquid at 30.degree. C., can dissolve no more than 5 g/l and preferably no more than 2 g/l of the resin.Type: GrantFiled: July 7, 1981Date of Patent: February 1, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward E. Jaffe
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Patent number: 4371643Abstract: Pigment compositions prepared from a pigment, a hydroxylic solvent, and a polar polymer may be reduced in particle size by grinding in the absence of a salt to produce a pigment which may be used "as is" without any subsequent treatment.Type: GrantFiled: August 31, 1981Date of Patent: February 1, 1983Assignee: American Cyanamid Co.Inventor: Daniel W. Thomas
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Patent number: 4369272Abstract: A process is disclosed for preparing resin extended pigments containing from 10% to 75% and preferably 20% to 50% by weight, based on the amount of pigment and resin present. The crude pigment and resin are comilled, such as in a ball mill, in a manner equivalent to that used to prepare pigmentary grade pigment from crude pigment. Liquids if they are present should not affect the free flowing nature of the mill powder. The resin is a polyolefin or a copolymer of ethylene and up to 25% of acrylic acid, methacrylic acid, vinyl acetate, or oxidized ethylene units preferably softening at from 80.degree. to 140.degree. C.Type: GrantFiled: July 7, 1981Date of Patent: January 18, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward E. Jaffe
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Patent number: 4369270Abstract: Dispersions containing (a) a pigment, (b) an oxalkylated novolak, (c) urea and/or a compound containing at least 2 long-chain aliphatic groups and which are connected via a bridge member containing ester and/or amide groups, and (d) water and/or agents retarding drying up, and, optionally, usual adjuvants, are useful for pigmenting natural or synthetic materials, especially aqueous systems containing cellulose ethers.Type: GrantFiled: January 14, 1980Date of Patent: January 18, 1983Assignee: Hoechst AktiengesellschaftInventors: Erwin Dietz, Max Grossmann, Michael Maikowski
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Patent number: 4359570Abstract: Disclosed are colored polyester compositions containing copolymerized anthraquinone dyes as colorants, which compositions may be used, for example, for food packaging and to mold colored beverage bottles. The copolymerized dyes are thermally stable at the processing temperatures, and are colorfast and nonextractable. The useful dyes have the general formula: ##STR1## wherein either or both of rings A and B may contain in any position thereon one or two groups of the formula ##STR2## R and R.sup.3 each is hydrogen, lower alkyl or lower hydroxyalkyl; R.sup.1, R.sup.2, R.sup.4 and R.sup.5 each is hydrogen or 1-3 substituents such as lower alkyl, lower alkoxy, phenyl, Cl, Br, or the like; X is --S-- or --NH--; n is 1 or 2; m is 0, 1, or 2.Type: GrantFiled: October 26, 1981Date of Patent: November 16, 1982Assignee: Eastman Kodak CompanyInventors: Thomas G. Davis, Max A. Weaver
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Patent number: 4330637Abstract: An electronic device such as an integrated circuit is encapsulated within a silicone resin formulation having a metallo-porphyrin compound contained therein. The compound is cleaved by HCl to form a porphyrin diacid chloride and a free metal having the capability of chelating chloride ions and hydroxyl groups thereby preventing corrosion and anionic attack of metallic circuit elements and development of unwanted conductive pathways.Type: GrantFiled: January 5, 1981Date of Patent: May 18, 1982Assignee: Western Electric Company, Inc.Inventor: Ching-Ping Wong
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Patent number: 4325862Abstract: A solid pigment composition comprises an intimate mixture of a pigment and a copolymer of an alkyl or cycloalkyl methacrylate ester and a lesser amount of an aminoalkyl methacrylate ester. The compositions are compatible with a wide range of substrates such as paints, printing inks and bulk polymers.Type: GrantFiled: June 2, 1980Date of Patent: April 20, 1982Assignee: Sandoz Ltd.Inventor: Johann Schuster