Patents Examined by Marion C. McCamish
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Patent number: 4985472Abstract: An actinic ray curable composition for casting polymerization which comprises:(A) 40-90 parts by weight of an urethane poly(meth)acrylate having at least two (meth)acryloyl groups in one molecule,(B) 10-60 parts by weight of a radical polymerizable vinyl monomer having a boiling point of 100.degree. C. or higher, and(C) 0.005-5 parts by weight, per 100 parts by weight of total of the above components (A) and (B), of at least one member selected from methylphenyl glyoxylate, 2-hydroxy-2-methyl-1-phenylpropane-1-one, hydroxycyclohexyl phenyl ketone and a photo-initiator represented by the general formula (I): ##STR1## (wherein R.sub.1 and R.sub.2 which may be identical or different each represents a phenyl group, a methoxy group, an ethoxy group or an isopropyloxy group) and a casting polymerization molded product obtained by radical polymerization of said composition by irradiation with actinic ray.Type: GrantFiled: November 7, 1988Date of Patent: January 15, 1991Assignee: Mitsubishi Rayon Company, Ltd.Inventors: Fumito Aosai, Hiroshi Fukushima, Hisako Hado
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Patent number: 4985341Abstract: A photopolymerizable composition is described comprising (a) a polymeric binder, (b) an acrylate or alkacrylate of a polyhydric alcohol, said acrylate or alkacrylate being free of urethane groups and further comprising at least one group which is photooxidizable on exposure to actinic radiation in the presence of a photoreducible dye, (c) a photoinitiator comprising a photoreducible dye, and (d) a second photoinitiator comprising a trihalomethyl compound capable of being cleaved by irradiation. The composition is suitable for production of printing plates and photoresists and displays increased photosensitivity.Type: GrantFiled: December 21, 1988Date of Patent: January 15, 1991Assignee: Hoechst AktiengesellschaftInventors: Klaus Rode, Dieter Mohr, Werner Frass, Joachim Gersdorf
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Polysiloxane pattern-forming material with SiO.sub.4/2 units and pattern formation method using same
Patent number: 4985342Abstract: Pattern-forming material useful in producing highly accurate submicron patterns having unusually high aspect ratios at superior resolutions are obtained by using a solvent-soluble polyorganosiloxane having SiO.sub.4/2 units and at least one other organosiloxane unit which contains a high energy radiation sensitive group. The polyorganosiloxane has a softening temperature greater than room temperature.Type: GrantFiled: November 7, 1988Date of Patent: January 15, 1991Assignee: Toray Silicone Company, Ltd.Inventors: Naohiro Muramoto, Katsutoshi Mine -
Patent number: 4985474Abstract: A resin composition hardenable by irradiation of a high energy ray is disclosed, which includes:(a) a resin selected from the group consisting of rosins and modified rosins and having an acid value of at least 150 and a Gardner color scale of not greater than 15;(b) a compound of the general formula (I):Y--CO--O--A--O).sub. m CO--CR.dbd.CH.sub.2 (I)wherein Y represents ##STR1## A represents an alkylene having 1-4 carbon atoms, R represents hydrogen or methyl and m is an integer of 1-4;(c) a hydroxyl group-containing compound having only one acrylic or methacrylic group and at least one hydroxyl group; and(d) a polyol compound having at least two hydroxyl groups. The resin composition is useful for plugging through-holes of a metal plated board in manufacturing printed wiring boards.Type: GrantFiled: November 13, 1989Date of Patent: January 15, 1991Assignee: Somar CorporationInventors: Osamu Ogitani, Ryuichi Fujii
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Patent number: 4983498Abstract: A photopolymerizable mixture is disclosed comprising:(a) a polymeric binder,(b) an acrylate or alkacrylate of a polyhydric alcohol containing one or more groups which are photooxidizable on exposure in the presence of the photoreducible dye, and one or more urethane groups,(c) a photoreducible dye as photoinitiator,(d) a trihalomethyl compound which can be cleaved by irradiation, and(e) an acridine or phenazine compound which is active as a photoinitiator.The mixture is suitable for the production of printing plates and photoresists and is distinguished by increased photosensitivity.Type: GrantFiled: March 23, 1988Date of Patent: January 8, 1991Assignee: Hoechst AktiengesellschaftInventors: Klaus Rode, Dieter Mohr, Werner Frass
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Patent number: 4983479Abstract: A method of manufacturing a laminated element, in which a substrate 1 is provided with a coating 2 of a liquid-crystalline monomer, in accordance with formula 1, which is oriented by means of an external force, in particular a magnetic field 3, and subsequently subjected to radiation 4, so that a pattern 5 of coating 2 is polymerized and the orientation is fixed, as well as a laminated element, such as an optical component, obtained in accordance with the method.Type: GrantFiled: February 24, 1989Date of Patent: January 8, 1991Assignee: U.S. Philips CorporationInventors: Dirk J. Broer, Jan van der Veen, Jan Boven
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Patent number: 4983456Abstract: Electrically and/or thermally conductive reinforced compositions convertible to reinforced components are disclosed. The compositions comprise a polymeric material of little or no conductivity and high strength, metal plated composite fibers having a conductive semi-metallic core and a thin, firmly adhered layer of an electrodepositable metal coating on said core. The metal coated composite fibers will not lose their conductive coatings during normal processing and provide conductivity without reducing the physical properties of the polymeric material. The compositions of the invention are convertible to conductive components such as laminate prepregs, surface plys for laminates, conductive adhesives, conductive inks, and conductive elastomeric gaskets. The components can be incorporated in improved articles such as structural parts for transportation vehicles, printed circuit boards, lighting shields and molded articles.Type: GrantFiled: November 18, 1987Date of Patent: January 8, 1991Assignee: American CyanamidInventors: Richard S. Iwaskow, Stephen M. Crum
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Patent number: 4983668Abstract: Particle size, swelling, and other characteristics of unsaturated polyester beads are controlled in a suspension polymerization system to make beads suitable for use as fillers in molding and forming. Process steps include degassing prior to polymerization, positive pressure during polymerization, and washing to remove suspending agent.Type: GrantFiled: November 25, 1987Date of Patent: January 8, 1991Assignee: Aristech Chemical CorporationInventors: Louis A. Cutter, Richard A. Ganger, John J. Godfrey
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Patent number: 4981738Abstract: This invention relates to a multi-layer protective fabric for protective suits used in hazardous or toxic environments. A first layer comprises strips of water and vapor impermeable material, there being a gap between adjacent such strips. A second layer comprises a plurality of strips of a wicking material with each such strip covering the inner surface of a first layer strip, passing through the gap between adjacent strips and covering the outer surface of the adjacent first layer strip. Moisture, such as perspiration will pass via the wicking material through the gaps past the first layer for evaporation and diffusion through a third layer of a liquid impermeable/vapor permeable material which extends over the second layer material covering the outer surfaces of the first layer.Type: GrantFiled: April 13, 1989Date of Patent: January 1, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Brian Farnworth, Randall J. Osczevski
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Patent number: 4981908Abstract: Blends of 20-99 parts by weight of a multi-block copolyester thermoplastic elastomer melting above 100.degree. C. with 80-1 parts by weight of a polyacrylate elastomer.Type: GrantFiled: February 2, 1988Date of Patent: January 1, 1991Assignee: E. I. Du Pont De Nemours and CompanyInventor: James R. Wolfe, Jr.
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Patent number: 4980255Abstract: An electrophotographic photoreceptor composition comprises in sequence:(a) a conductive base layer;(b) a carrier transport layer comprising an organic carrier transport material;(c) a carrier generation layer comprising an organic carrier generation material; and(d) a surface protective layer characterized by having a transmissivity not exceeding 50% for light having a wavelength of 405 nm or less. The composition is advantageous in that it is capable of being employed in conjunction with a positive electrification method in electrophotographic image formation, and in that it exhibits enhanced resistance to fatigue from light exposure.Type: GrantFiled: March 31, 1989Date of Patent: December 25, 1990Assignee: Fuji Electric Co., Ltd.Inventor: Kouichi Aizawa
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Patent number: 4980259Abstract: A process for replenishing a liquid developer, and a liquid developer made by the process, comprising transferring a first composition comprising a carrier liquid and a charge director into the liquid developer and transferring a second composition comprising toner particles, carrier liquid and charge director into the liquid developer. The amount of charge director in each of the first and second compositions charge director is in a predetermined ratio which results in a constant level of charge director in the liquid developer when the liquid developer is utilized in an electrostatic or printing process.Type: GrantFiled: January 26, 1989Date of Patent: December 25, 1990Assignee: Savin CorporationInventors: Benzion Landa, Yaacov Almog, Uri Levy
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Patent number: 4980209Abstract: A wrap for a flower pot comprises a sheet of material formed into the shape of a flower pot and having a pair of matching rings trapping the material between them at a location which, in use, will be adjacent to the upper margins of a flower pot. There is also disclosed a method of forming a flower pot wrap in which a first ring is placed on a mandrel having the shape of a flower pot, a sheet of material is placed over the mandrel and a second ring is moved over the sheet about the mandrel to engage the first ring and trap the sheet between the two rings.Type: GrantFiled: May 9, 1989Date of Patent: December 25, 1990Assignee: AEC Machinery LimitedInventor: Reinier Hill
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Patent number: 4978693Abstract: A molding of modified polyphenylene oxide resin comprises a composite of modified polyphenylene oxide containing polyphenylene oxide having structure expressed in the following general formula (I) as a basic skeleton, which resin composite preferably contains a cross linking agent, more preferably phosphoric ester serving as a cross linking agent, while the molding is cross-linked by irradiation to ionizing radiation: ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents univalent substituents selected from a group of hydrogen, alkyl group, halogen, alkoxyl group and haloalkoxyl group, and n represents a natural number.Type: GrantFiled: July 28, 1988Date of Patent: December 18, 1990Assignee: Sumitomo Electric Industries, Ltd.Inventor: Yoshito Sakamoto
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Patent number: 4977066Abstract: Esters of trihydric or tetrahydric alcohols with alkenylphosphonic or -phosphinic acids, which can be polymerized by means of actinic light, are disclosed. They are combined with polymeric binders, in particular water-soluble polymers, and free-radical-forming photoinitiators to form photopolymerizable mixtures which are suitable for the preparation of photoresists and the production of printing plates. The mixtures show reduced temperature sensitivity and have long shelf lives.Type: GrantFiled: May 22, 1989Date of Patent: December 11, 1990Assignee: Hoechst AktiengesellschaftInventors: Joachim Gersdorf, Hans-Jerg Kleiner
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Patent number: 4977197Abstract: A photopolymerizable dental composition, which comprises:(A) an organic composite filler obtained by polymerizing at least one carboxylic acid monomer of the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.15 alkyl group, a --COOY group, a halogen atom, or a phenyl group or a derivative thereof; R.sub.2 is a hydrogen atom, a C.sub.1 -C.sub.15 alkyl group, a --COOZ group, a halogen atom, or a phenyl group or a derivative thereof; R.sub.3 is a hydrogen atom, a C.sub.1 -C.sub.15 alkyl group, a halogen atom, or a phenyl group or a derivative thereof; and each of X, Y and Z is a hydrogen atom, NH.sub.4 or an alkali metal atom; or the formula: ##STR2## wherein each of R.sub.4 and R.sub.5 is a hydrogen atom, a C.sub.1 -C.sub.Type: GrantFiled: May 12, 1988Date of Patent: December 11, 1990Assignee: Mitsubishi Rayon Company LimitedInventors: Isao Sasaki, Nobuhiro Mukai, Hitoshi Ige
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Patent number: 4977199Abstract: Photopolymerizable compositions, based on 2-methoxytetrahydropyran and 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate, which can be applied as coatings on substrates and photocured at high speeds.Type: GrantFiled: January 13, 1989Date of Patent: December 11, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Joseph V. Koleske, George T. Kwiatkowski
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Patent number: 4975471Abstract: A photo-curable epoxy resin type composition which comprises (a) an epoxy resin, (b) at least one compound selected from the group consisting of (i) a compound having a group, other than an imido group, which is represented by the formula --CONH and (ii) an aromatic amine, (c) an organic metal compound, where said metal is selected from the group consisting of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, aluminum and zirconium; and (d) an organic silicon compound having at least one group selected from the group consisting of a peroxysilyl group and an o-nitrobenzyloxy group capable of forming a silanol group by irradiation with light. The photo-curable epoxy resin type composition according to this invention is capable of readily curing by light (ultraviolet ray in particular) and also capable of heat curing at a temperature of 150.degree. C.Type: GrantFiled: August 29, 1988Date of Patent: December 4, 1990Assignee: Kabushiki Kaisha ToshibaInventors: Shuzi Hayase, Shuichi Suzuki, Moriyasu Wada
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Patent number: 4973540Abstract: This invention relates to a developer for developing electrostatic latent images formed on an electrostatic latent image carrier, which comprises a toner including;a resin,a colorant, andan inorganic fine particle with at least both a negatively chargeable polar group and a positively chargeable polar group on the surface of the inorganic fine particle.Type: GrantFiled: August 31, 1989Date of Patent: November 27, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Junji Machida, Masashi Yamamoto, Ichiro Demizu, Kouichi Etou
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Patent number: 4973612Abstract: The present invention relates to coating compositions which contain multifunctional acrylates, unsaturated organic compounds and aqueous dispersions of colloidal silica. Transparent, abrasion resistant coatings result from the cure, either by ultraviolet light or electron beam radiation, of these compositions on solid substrates.Type: GrantFiled: November 30, 1989Date of Patent: November 27, 1990Assignee: Dow Corning CorporationInventors: Levi J. Cottington, Anthony Revis