Solid Polymer Derived From Nitrogen Containing Monomer Patents (Class 522/151)
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Patent number: 6451386Abstract: A process using acrylate monomers and ultraviolet light permits modification of porous polymeric materials without the use of a free radical initiator is described as is the material so modified. The modified polymeric material exhibits new properties such as wetability and advantageous flow characteristics that are useful in filtration.Type: GrantFiled: August 30, 2000Date of Patent: September 17, 2002Assignee: PTI Advanced Filtration, Inc.Inventor: John A. Simonetti
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Patent number: 6423760Abstract: The present invention provides a fully vulcanized powdery rubber having a particle size of from 20 to 2000 nm, its preparation and use. The vulcanized powdery rubber is obtained by irradiating a rubber latex having a particle size of from 20 to 2000 nm with a high-energy irradiation. The vulcanized powdery rubber is very easily to be dispersed into various plastics, and thus can be mixed with various plastics to prepare toughened plastics and fully valcanized thermoplastic elastomers.Type: GrantFiled: October 30, 2000Date of Patent: July 23, 2002Assignees: China Petro-Chemical Corporation, Beijing Research Institute of Chemical Industry, SinopecInventors: Jinliang Qiao, Genshuan Wei, Xiaohong Zhang, Shijun Zhang, Jianming Gao, Wei Zhang, Yiqun Liu, Jiuqiang Li, Fengru Zhang, Renli Zhai, Jingbo Shao, Kunkai Yan, Hua Yin
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Patent number: 6410610Abstract: A process for producing water-soluble, cationic polyelectrolytes is described, wherein the polymerization of the water-soluble monomers is initiated at low temperatures using a combination of UV light, photoinitiator and a redox system, and is characterized in that the redox system is capable of initiating the polymerization only at temperatures higher than or equal to 20° C. The polymers have a high molecular weight and a low content of residual monomer.Type: GrantFiled: April 26, 2000Date of Patent: June 25, 2002Assignee: Stockhausen GmbH & Co. KGInventor: Helmut Brehm
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Patent number: 6329443Abstract: New imido(meth) acrylates of general formula (1), wherein R1, R2 and R3 may be the same or different and each represents H or CH3; R4 to R7 may be the same or different and each represents H or CmH2m+1 (in which m is 1 to 6); and n represents 1 to 4, and radiation-curable compositions prepared from them, easily cured by the irradiation with radiations, particularly ultraviolet rays, to form cured compositions excellent in weather resistance, abrasion resistance and adhesion to a base, and free from the problem of odor.Type: GrantFiled: December 20, 1999Date of Patent: December 11, 2001Assignee: Toagosei CO, Ltd.Inventors: Eiichi Okazaki, Tetsuji Jitsumatsu
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Patent number: 6329121Abstract: An image recording medium is disclosed which comprising: an acid generating agent capable of generating an acid by the action of heat or an acid, which is represented by the following formula (1); and a compound of causing variation in the absorption region of from 360 to 900 nm by the intramolecular or intermolecular reaction triggered by the action of an acid: W1OP (1) wherein W1 represents a residue of an acid represented by W1OH, and P represents an acid-sensitive substituent capable of splitting off at a temperature of 150° C. or less due to catalysis by W1OH.Type: GrantFiled: December 21, 2000Date of Patent: December 11, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiro Ohkawa
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Patent number: 6316161Abstract: Disclosed is an image recording medium which comprises a compound having at least one substituent group removable by the action of heat, an acid or light and capable of producing an acid by an intramolecular nucleophilic substitution subsequent to the removal of the substituent group to acquire both high sensitivity and excellent storage quality.Type: GrantFiled: September 2, 1999Date of Patent: November 13, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuhiko Obayashi, Tatsuya Igarashi, Atsuhiro Ohkawa
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Patent number: 6316518Abstract: The invention includes a method of increasing polymerization within a condensation polymer. A substantially dry condensation polymer material is provided. The material is exposed to radiation having a frequency less than microwave frequency for a time of at least about 0.5 hour to increase an amount of polymerization within the material. The invention also includes a method of treating a polyamide material. A polymeric polyamide material is provided and exposed to first radiation having a first power intensity. The material is then exposed to second radiation having a second power intensity. The first power intensity is higher than the second power intensity. Additionally, the invention includes an apparatus. The apparatus includes an inlet port through which a feed material enters the apparatus, and an outlet port through which the feed material passes out of the apparatus.Type: GrantFiled: February 3, 2000Date of Patent: November 13, 2001Assignee: Advanced Polymer Technology, Inc.Inventors: L. Myles Phipps, Eric J. Swenson
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Publication number: 20010016297Abstract: An image recording medium is disclosed which comprising: an acid generating agent capable of generating an acid by the action of heat or an acid, which is represented by the following formula (1); and a compound of causing variation in the absorption region of from 360 to 900 nm by the intramolecular or intermolecular reaction triggered by the action of an acid:Type: ApplicationFiled: December 21, 2000Publication date: August 23, 2001Inventors: Tatsuhiko Obayashi, Junichi Ymanouchi, Atsuhiro Ohkawa
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Patent number: 6261736Abstract: The pattern forming material of the present invention includes a polymer having a group which generates an acid when the polymer is irradiated with an energy beam or heated and a compound which generates a base when the compound is irradiated with an energy beam. The polymer is a binary polymer or a polymer of a higher degree obtained by polymerizing another group with a compound represented by the following general formula: where R1 indicates a hydrogen atom or an alkyl group, and R2 and R3 independently indicate a hydrogen atom, an alkyl group, a phenyl group or an alkenyl group, or together indicate a cyclic alkyl group, a cyclic alkenyl group, a cyclic alkyl group having a phenyl group or a cyclic alkenyl group having a phenyl group.Type: GrantFiled: October 12, 1999Date of Patent: July 17, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayuki Endo, Masamitsu Shirai, Masahiro Tsunooka
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Patent number: 6197844Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.Type: GrantFiled: February 4, 1999Date of Patent: March 6, 2001Assignee: 3M Innovative Properties CompanyInventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
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Patent number: 6193909Abstract: Cross-linked electrically conductive polymers, in particular electrically conductive, polyaniline are described. Dopants and substituents having pendant cross-linkable functionality are used which form a cross-linked conducting polymer network. The cross-linking functionality can be hydrogen-bonding as well as chemically polymerizable or cross-linkable. A conjugated path between chains can also be incorporated. The resulting cross-linked conducting polymers have enhanced thermal and environmental stability. The dopant cannot readily be washed out with solvents or diffuse out upon exposure to heat. In addition, the cross-linked polymers have enhanced electrical conductivity.Type: GrantFiled: February 2, 1996Date of Patent: February 27, 2001Assignee: International Business Machines CorporationInventors: Marie Angelopoulos, Jeffrey D. Gelorme, Yun Hsin Liao, Jane M. Shaw
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Patent number: 6180687Abstract: In vivo polymerizable intraocular lens compositions which comprise substituted fluoroalkyl or perfluoroalkyl monomers having anionic, cationic, and/or nonionic surface active functionality in the unsaturated fluorophobic ends. The compositions are preferably cured by UV photoinitiation and are useful in repairing torn or detached retinal tissue or forming intraocular lenses in situ.Type: GrantFiled: May 17, 1999Date of Patent: January 30, 2001Assignees: Alcon Laboratories, Inc., University of Southern MississippiInventors: Mark E. Hammer, Steven T. Charles, John C. Lang, Robert Y. Lochhead, Lon J. Mathias
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Patent number: 6136383Abstract: Radiation-curable preparations comprise at least one polymer which has ethylenically unsaturated double bonds and are used for the coating of mineral moldings.A process for coating mineral moldings, and also mineral moldings which have a coating cured by radiation, are also described.Type: GrantFiled: July 28, 1998Date of Patent: October 24, 2000Assignee: BASF AktiengesellschaftInventors: Manfred Schwartz, Klaus Menzel, Bertold Bechert, Erich Beck, Wolfgang Reich
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Patent number: 6114404Abstract: The present invention relates to a radiation curable ink formulation which has a tan .delta. of from about 0.5 to about 1.5. The radiation curable ink formulation includes a pigment, a radiation cross-linkable monomer or oligomer, and a rheology modifier. Flat panel color filters which contain a black radiation curable ink formulation and one or more colored radiation curable ink formulations are also disclosed. At least one of the black and colored radiation curable ink formulations has a tan .delta. of from about 0.5 to about 1.5 and includes a pigment, a radiation cross-linkable monomer or oligomer, and a rheology modifier. Methods for manufacturing these flat panel color filters are also disclosed. The radiation curable ink formulations of the present invention have the advantage of permitting clean doctoring.Type: GrantFiled: March 22, 1999Date of Patent: September 5, 2000Assignee: Corning IncorporatedInventors: John S. Deeken, Ronald E. Johnson, Lung-Ming Wu, Khalil M. Moussa
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Patent number: 6100009Abstract: An image recording medium is disclosed which comprising: an acid generating agent capable of generating an acid by the action of heat or an acid, which is represented by the following formula (1); and a compound of causing variation in the absorption region of from 360 to 900 nm by the intramolecular or intermolecular reaction triggered by the action of an acid:W.sup.1 OP (1)wherein W.sup.1 represents a residue of an acid represented by W.sup.1 OH, and P represents an acid-sensitive substituent capable of splitting off at a temperature of 150.degree. C. or less due to catalysis by W.sup.1 OH.Type: GrantFiled: October 15, 1998Date of Patent: August 8, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiro Ohkawa
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Patent number: 6090895Abstract: A method is provided for making crosslinked acidic polymers useful as ion conductive membranes, such as crosslinked sulfonated polyether ketones, sulfonated polysulfones, sulfonated polystyrenes, and other acidic polymers, by crosslinking with a species which generates an acidic functionality. The crosslinker preferably binds to acid functions by conversion of acid groups to imide functionality, which, due to the acidity of the N-H bonds therein, compensate for the acidity lost by the occupation of the acid groups and thus preserve membrane conductivity while contributing to membrane strength and resistance to swelling.Type: GrantFiled: May 22, 1998Date of Patent: July 18, 2000Assignee: 3M Innovative Properties Co.,Inventors: Shane S. Mao, Steven J. Hamrock, David A. Ylitalo
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Patent number: 6045967Abstract: A novel photoresist copolymer, consisting of at least two aliphatic cyclo-olefins and an amine, which is useful for the photolithography using ArF as a light source. The photoresist prepared from the copolymer can be patterned with high resolution.Type: GrantFiled: January 7, 1998Date of Patent: April 4, 2000Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Jae Chang Jung, Chi Hyeong Roh, Joo On Park
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Patent number: 6030550Abstract: Cross-linked electrically conductive polymers, in particular electrically conductive, polyaniline are described. Dopants and substituents having pendant cross-linkable functionality are used which form a cross-linked conducting polymer network. The cross-linking functionality can be hydrogen-bonding as well as chemically polymerizable or cross-linkable. A conjugated path between chains can also be incorporated. The resulting cross-linked conducting polymers have enhanced thermal and environmental stability. The dopant cannot readily be washed out with solvents or diffuse out upon exposure to heat. In addition, the cross-linked polymers have enhanced electrical conductivity.Type: GrantFiled: February 2, 1996Date of Patent: February 29, 2000Assignee: International Business Machines CorporationInventors: Marie Angelopoulos, Jeffrey D. Gelorme, Yun Hsin Liao, Jane M. Shaw
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Patent number: 6028123Abstract: An acrylic resin composition for a color filter containing 100 parts by weight of an acrylic resin having acid value of 5 to 100 mgKOH/g and 5 to 90 parts by weight of a coloring pigment is provided. The acrylic resin has been prepared by polymerizing a monomer mixture containing 1 to 6% by weight of .alpha., .beta.-unsaturated carboxylic acid, 10 to 80% by weight of .alpha., .beta.-unsaturated carboxylate, and 5 to 30% by weight of N-substituted maleimide.Type: GrantFiled: August 15, 1997Date of Patent: February 22, 2000Assignees: Nippon Oil Co., Ltd., Dai Nippon Printing Co., Ltd.Inventors: Takayuki Hirayama, Junichiro Tanimoto, Yutaka Otsuki, Masayuki Ando
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Patent number: 5847022Abstract: The present invention provides a radiation curable resin composition and method of production therefor; the present composition has wide applications as an ink, coating or the like, is dilutable in water or an organic solvent, and forms a coating which has excellent hardening characteristics and adherence to a substrate, as well as superior resistance to heat, chemicals and boiling, this resin composition may be redissolved with water or an organic solvent prior to hardening; which have a number average weight of 500 to 50,000, characterized in that the aprotic ammonium salt represented by general formula 1 is contained in the resin in the amount of 0.1 to 4.0 mol/kg.Type: GrantFiled: March 21, 1996Date of Patent: December 8, 1998Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Yozo Yamashina, Eiju Ichinose, Yoichi Abe, Hidenobu Ishikawa
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Patent number: 5801033Abstract: This invention provides novel methods for the formation of biocompatible membranes around biological materials using photopolymerization of water soluble molecules. The membranes can be used as a covering to encapsulate biological materials or biomedical devices, as a "glue" to cause more than one biological substance to adhere together, or as carriers for biologically active species. Several methods for forming these membranes are provided. Each of these methods utilizes a polymerization system containing water-soluble macromers, species which are at once polymers and macromolecules capable of further polymerization. The macromers are polymerized using a photoinitiator (such as a dye), optionally a cocatalyst, optionally an accelerator, and radiation in the form of visible or long wavelength UV light. The reaction occurs either by suspension polymerization or by interfacial polymerization.Type: GrantFiled: June 7, 1995Date of Patent: September 1, 1998Assignee: The Board of Regents, The University of Texas SystemInventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Syed F. A. Hossainy
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Patent number: 5723513Abstract: Radiation-sensitive organo-halogen compounds that have a photo-labile halomethyl-1,3,5-triazine moiety and a polymeric moiety within the same molecule. The compounds of this invention are comprised of a polymeric moiety having attached or incorporated within its structure at least one 1,3,5-triazine nucleus, said triazine nucleus having at least one halomethyl substituent attached to a carbon atom of the triazine nucleus. These compounds are capable of being stimulated by actinic radiation at wavelengths of from about 250 to about 900 nanometers to generate free radicals and/or acids. The compounds of this invention are useful as photoinitiators in free radical polymerization reactions, oxidation-reduction reactions, or reactions sensitive to acid, and they also exhibit the capability to crosslink upon exposure to light.Type: GrantFiled: March 8, 1996Date of Patent: March 3, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: James A. Bonham, Mitchell A. Rossman, Richard J. Grant
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Patent number: 5662781Abstract: Nitrile impurities are eliminated from polymers which contain acyclic N-vinyl-carboxamide and/or vinylamine units by treating the polymers with at least one oxidizing agent a) with exposure to light and/or b) in the presence of heavy metal ions.Type: GrantFiled: January 11, 1996Date of Patent: September 2, 1997Assignee: BASF AktiengesellschaftInventors: Walter Denzinger, Heinrich Hartmann, Michael Kroener, Claudia Nilz
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Patent number: 5529914Abstract: This invention provides novel methods for the formation of biocompatible membranes around biological materials using photopolymerization of water soluble molecules. The membranes can be used as a covering to encapsulate biological materials or biomedical devices, as a "glue" to cause more than one biological substance to adhere together, or as carriers for biologically active species. Several methods for forming these membranes are provided. Each of these methods utilizes a polymerization system containing water-soluble macromers, species which are at once polymers and macromolecules capable of further polymerization. The macromers are polymerized using a photoinitiator (such as a dye), optionally a cocatalyst, optionally an accelerator, and radiation in the form of visible or long wavelength UV light. The reaction occurs either by suspension polymerization or by interfacial polymerization.Type: GrantFiled: October 7, 1992Date of Patent: June 25, 1996Assignee: The Board of Regents the Univeristy of Texas SystemInventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Syed F. A. Hossainy
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Patent number: 5512418Abstract: An aqueous processable element for thermally-induced photoimaging and a photoimaging process using the element are disclosed. The element comprises, in order:(A) a dimensionally stable support, and(B) an active layer comprising:(1) a cationic polymer containing pendant ammonium groups, said cationic polymer being removable from said support by aqueous processing, said pendant groups having the general formula:--N (R.sub.1)(R.sub.2)(R.sub.3)!.sup.+ X.sup.-,(2) an infra-red absorbing material, and(3) optionally, a colorant;wherein:R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of hydrogen, substituted and unsubstituted alkyl, substituted and unsubstituted alkenyl, and substituted and unsubstituted aryl;R.sub.1, R.sub.2, and R.sub.3 together contain not more than about thirty carbon atoms; andX is an anion.Type: GrantFiled: March 10, 1993Date of Patent: April 30, 1996Assignee: E. I. du Pont de Nemours and CompanyInventor: Sheau-Hwa Ma
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Patent number: 5489623Abstract: A polymer has at least one photoactive site and more than one perfluorocyclobutane group. New monomers containing photoactive sites or photoactive precursors and at least one perfluorovinyl group are useful for making such polymers. Processes of making such polymers and the monomers from which they are made are disclosed. The polymers are useful in coatings, photoresists, and the like.Type: GrantFiled: April 25, 1995Date of Patent: February 6, 1996Assignee: The Dow Chemical CompanyInventors: David A. Babb, W. Frank Richey, Katherine S. Clement, Eric S. Moyer, Marius W. Sorenson
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Patent number: 5416127Abstract: This invention is a hot melt pressure sensitive adhesive formed by copolymerizing acrylic, or a combination of acrylic and vinyl, monomers with the functional monomer, 1-(1-isocyanato-1-methyl ethyl)-3-(1-methyl ethenyl)benzene m-TMI, to give a saturated polymer with pendant vinyl groups that are crosslinked by UV or EB radiation.Type: GrantFiled: January 26, 1994Date of Patent: May 16, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama Chandran, Roopram Ramharack, Irwin J. Davis, John C. Leighton
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Patent number: 5395731Abstract: Copolymeric mordant materials containing recurring units according to the following formula are disclosed: ##STR1## In such copolymers, each of R.sup.1, R.sup.2 and R.sup.3 can independently be alkyl; substituted-alkyl; cycloalkyl; aryl; aralkyl; alkaryl; or at least two of R.sup.1, R.sup.2 and R.sup.3, together with the quaternary nitrogen atom to which they are bonded, can complete a saturated or unsaturated, substituted or unsubstituted nitrogen-containing heterocyclic ring; X is an anion; R.sup.4 is hydrogen or alkyl (e.g. methyl). The pendent "b" group contain hydrogen-bonding sites for promotion of self-associated aggregation and ring unsaturation for photocyclization and control of physical properties (e.g., water insensitivity) of the image-receiving layer. The copolymeric mordant materials can be utilized as image-receiving layers in photographic products and processes of the diffusion transfer type.Type: GrantFiled: May 13, 1994Date of Patent: March 7, 1995Assignee: Polaroid CorporationInventors: J. Michael Grasshoff, Lloyd D. Taylor, John C. Warner
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Patent number: 5334485Abstract: Photosensitive, photocurable, compositions contain a polymeric backbone which are basic in an aqueous environment having a pendant photosensitive group. The pendant groups are styryl-amine or nitrogen heterocyclic groups which contain an ethylenically unsaturated photocross-linking group. The pendant styryl-amine or nitrogen heterocyclic groups can cross-link two polymer chains by photo addition through ethylenically unsaturated groups in the styryl moiety forming a cyclobutane crosslinked site. The cross-linking is accomplished by irradiating the material with visible light or ultraviolet radiation of appropriate wave length, depending on the absorbitivity of the system. The photocurable polymer can be formulated into useful systems including in liquid resists, pre-coated film resists, etc. and can be used in both negative or positive imaging systems.Type: GrantFiled: November 5, 1991Date of Patent: August 2, 1994Assignee: The Chromaline CorporationInventors: Lawrence C. Van Iseghem, Alexander S. Gybin
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Patent number: 5260351Abstract: Perfluoroelastomers cured by radiation and characterized by an absence of curing agent residues in the cured product.Type: GrantFiled: March 17, 1993Date of Patent: November 9, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Anestis L. Logothetis
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Composition of ultraviolet curing antifogging agent and process for forming antifogging coating film
Patent number: 5244935Abstract: An ultraviolet curing antifogging agent is disclosed. The composition includes block copolymer (a) having a hydrophilic polymer segment (a1) and a hydrophobic polymer segment (a2). A polar solvent (c) is provided in which the hydrophilic polymer segment (a1) can easily be dissolved while the hydrophobic polymer segment (a2) can not. It further includes a photopolymerizable compound (b), and a photopolymerization initiator (d). The block copolymer (a) contains at least one hydrophilic monomer selected from the group of: a (meth) acrylamide compound represented by the general formula: CH.sub.2 .dbd.CR.sub.1 CONR.sub.2 R.sub.3 ; a cyclic (meth)acrylamide compound represented by the general formula ##STR1## and a hydroxyalkyl (meth)acrylate. Further, the hydrophilic polymer segment (a1) is formed by a radically polymerizable monomer having a functional group such as glycidyl group.Type: GrantFiled: July 31, 1992Date of Patent: September 14, 1993Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Yoshihiro Oshibe, Yasuhiro Yamamoto, Hiroshi Ohmura, Keiji Kumazawa -
Patent number: 5225315Abstract: A water-soluble coating or other deposit is produced from a formulation that is comprised of a curable liquid substance and a dispersed particulate effervescing agent. The formulation is particularly useful as a solder resist in the manufacture of PCBs, and the preferred composition contains n-vinyl-2-pyrrolidone, N,N-dimethylacrylamide, and polyvinylpyrrolidone.Type: GrantFiled: September 19, 1991Date of Patent: July 6, 1993Assignee: Dymax CorporationInventors: Gary V. Grosclaude, Andrew G. Bachmann
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Hydrophilic porous membrane, method for production thereof, and plasma separator using said membrane
Patent number: 4845132Abstract: A hydrophilic porous membrane has graft chains of a hydrophilic monomer formed on the surface of a hydrophobic porous membrane so as to impart to the surface perfect hydrophilicity such that the produced membrane, when wetted, exhibits a swelling ratio of not more than 1% and a bubble point in the range of 0.5 to 8 kg/cm.sup.2. The hydrophilic porous membrane is produced by irradiating the hydrophobic porous membrane with plasma, feeding the hydrophilic monomer in a gaseous state, and allowing the hydrophilic monomer to be graft polymerized on the surface of the porous membrane. A plasma separator is obtained by using the aforementioned hydrophilic porous membrane as a plasma separation membrane.Type: GrantFiled: May 6, 1987Date of Patent: July 4, 1989Assignees: Agency of Industrial Science and Technology, Terumo Kabushiki KaishaInventors: Toshio Masuoka, Okihiko Hirasa, Yoshio Suda, Makoto Onishi, Yukio Seita -
Patent number: 4759923Abstract: It has been found that certain derivatives of poly(diallylmethylamine) are therapeutically effective serum cholesterol lowering agents.Type: GrantFiled: June 25, 1987Date of Patent: July 26, 1988Assignee: Hercules IncorporatedInventors: George A. Buntin, Bernard J. Scheve
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Patent number: 4756989Abstract: Disclosed is an image-forming material having a high sensitivity to high-energy beams and excellent in dry etching resistance, heat stability and resolution which comprises a copolymer containing a total of 1 to 99 mole-% of at least one of recurring structural units represented by the following formulas [A] and [A'] and 1 to 99 mole-% of at least one recurring structural unit represented by the following formula [B] and having a number-average molecular weight of 500 to 1,000,000: ##STR1## wherein R.sub.1 of the formulas [A] and [A'] represents a hydrogen or halogen atom, or an alkyl group having 1 to 6 carbon atoms, the substituent groups R.sub.Type: GrantFiled: July 10, 1985Date of Patent: July 12, 1988Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hideo Ai, Nobuo Nakazaki, Manabu Miyao
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Patent number: 4752426Abstract: Plastic resinous tubes, particularly for medical use is improved in blood compatibility when brought into contact with blood, by applying a low-temperature plasma treatment to inner surfaces of the tubes, which plasma is produced through electrodeless electric discharges by the effect of microwave to make it possible to prevent the tube from being heated in such a treatment. The inner surfaces of the tubes thus activated may be further subjected to an inner surface graft copolymerization treatment to enhance blood compatibility.Type: GrantFiled: June 27, 1986Date of Patent: June 21, 1988Assignees: Yoshito Ikada, Japan Medical Supply Co., Ltd.Inventor: Tsuneo Cho
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Patent number: 4704412Abstract: A high nitrile polymer composition resistant to gamma radiation comprising a high nitrile resin, a first stabilizer comprising at least one organotin compound selected from the group consisting of an organotin compound having the formulaR.sub.2 Sn(OOCCH.dbd.CHCOOR').sub.Type: GrantFiled: May 19, 1986Date of Patent: November 3, 1987Assignee: The Standard Oil CompanyInventor: Joseph P. McCaul
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Patent number: 4656217Abstract: A method for the manufacture of a reactive polymer, which comprises causing (A) a polymer containing a free carboxylic group in an acid equivalent in the range of 0.01 to 5 milliequivalent/g and (B) an unsaturated aziridine compound possessing one aziridinyl group and at least one radically polymerizable unsaturated group in the molecular unit thereof to react with each other in proportions such that the amount of said unsaturated aziridine compound falls in the range of 0.05 to 1.2 mole per 1.0 mole of said free carboxylic group of said polymer at a temperature in the range of 40.degree. to 150.degree. C., and the reactive polymer obtained by such method.Type: GrantFiled: May 25, 1984Date of Patent: April 7, 1987Assignee: Nippon Shokubai Kagaku Kogyo Co. Ltd.Inventors: Shiro Sugiura, Yoshikuni Mori, Masatoshi Yoshida, Ryoichi Oshiumi
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Patent number: 4631309Abstract: Equipment for the exploration and/or production of petroleum and natural gas having elastomeric components have high resistance to materials encountered if the elastomeric components are shaped from a hydrogenated butadiene-acrylonitrile copolymer with a residual double bond content less than 1% and unhydrogenated nitrile groups.Type: GrantFiled: December 6, 1984Date of Patent: December 23, 1986Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Friedrich Leibbrandt, Zsolt Szentivanyi, Hartmuth Buding
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Patent number: 4581318Abstract: N-alkynyl polyvinylpyridinium resists, which are sensitive to both electrons and deep U.V., are disclosed.Type: GrantFiled: April 3, 1984Date of Patent: April 8, 1986Assignee: GTE Laboratories IncorporatedInventors: Kang I. Lee, Harriet Jopson