Nitrogen Patents (Class 522/116)
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Patent number: 5728505Abstract: Aqueous processable, photopolymerized coating compositions are disclosed, which after curing, have superior flexibility for use as permanent coatings for the protection of printed circuitry.Type: GrantFiled: February 20, 1997Date of Patent: March 17, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Thomas Eugene Dueber, Frank Leonard Schadt, III
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Patent number: 5652281Abstract: Disclosed are graft copolymers of polyolefins and a method of preparing the graft copolymers. The method includes irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained throughout the process while free radicals produced in the olefin polymer by the irradiation are present, thereby preventing degradation of the polymer. In a final step, residual free radicals are deactivated, and any unreacted monomer is removed.Type: GrantFiled: November 21, 1994Date of Patent: July 29, 1997Assignee: Montell North America Inc.Inventors: Paolo Galli, Anthony J. DeNicola, Jr., Jeanine A. Smith
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Patent number: 5627011Abstract: The invention relates to the use of oxime sulfonates of formula 1 ##STR1## wherein R is naphthyl, ##STR2## Ar is an unsubstituted aryl group or an aryl group which carries one or more than one substituent selected from the group consisting of nitro, chloro, bromo, hydroxyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 perfluoroalkyl, C.sub.1 -C.sub.4 alkoxy and acid degradable substituents;R.sub.0 is either a R.sub.1 --X group or R.sub.2 ;X is an oxygen or a sulfur atom;R.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl or unsubstituted phenyl or phenyl which is substituted by a member selected from the group consisting of chloro, bromo, C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy, andR.sub.2 is hydrogen, C.sub.1 -C.sub.Type: GrantFiled: May 12, 1995Date of Patent: May 6, 1997Assignee: Ciba-Geigy CorporationInventors: Norbert Munzel, Reinhard Schulz, Heinz Holzwarth, Stephan Ilg
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Patent number: 5612391Abstract: Contact lenses formed from compounds of formula I: ##STR1## are disclosed. The compounds are photoinitiators which can be functionalized by means of ethylenic groups or can be bonded to H-active substances, in order, for example, to modify surfaces by means of photopolymerizable substances. The compounds are especially useful in the manufacture of contact lenses.Type: GrantFiled: June 6, 1995Date of Patent: March 18, 1997Assignee: Ciba Geigy CorporationInventors: Peter Chabrecek, Dieter Lohmann
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Patent number: 5576146Abstract: A photosensitive polymer-containing system containing: (a) an energy sensitive polymer having a linear hydrocarbyl backbone and pendant peptide groups with free-radically polymerizable functionality attached thereto; (b) a vinyl-halomethyl-s-triazine capable of free-radical generation upon excitation with electromagnetic radiation having a wavelength of from about 330 to 500 nm; (c) an organic acid having a pKa of from about 1.8 to 5.5; (d) a leuco dye; and (e) a binder. A colorant may optionally be added. The photosensitive systems exhibit an increased shelf-life and excellent photosensitivity.Type: GrantFiled: January 17, 1995Date of Patent: November 19, 1996Assignee: Imation Corp.Inventor: M. Zaki Ali
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Patent number: 5536759Abstract: This invention is a hot melt pressure sensitive adhesive formed by copolymerizing acrylic, or a combination of acrylic and vinyl, monomers, at least one of which is a photoinitiator, 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 radiation.Type: GrantFiled: October 13, 1994Date of Patent: July 16, 1996Assignee: National Starch and Chemical Investment Holding CorporationInventors: Roopram Ramharack, Rama Chandran
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Patent number: 5530036Abstract: An epoxy group-containing thermosetting resin composition comprising (A) a copolymer obtained From (a) at least one member selected from an unsaturated carboxylic acid and an unsaturated carboxylic acid anhydride, (b) an epoxy group-containing unsaturated compound, (c) a monoolefin unsaturated compound, and optionally (d) a conjugated diolefin unsaturated compound, and (B) an organic solvent for dissolving the above copolymer. There is also provided another epoxy-group containing thermosetting resin composition which contains the above component (A), (C) a polymerizable compound having at least one ethylenically unsaturated double bond, and (D) a photopolymerization initiator. These epoxy-group containing thermosetting resin compositions are excellent in storage stability.Type: GrantFiled: December 15, 1994Date of Patent: June 25, 1996Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Kimiyasu Sano, Masayuki Endo, Atsufumi Shimada, Yasuaki Yokoyama, Nobuo Bessho
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Patent number: 5451453Abstract: Supports having azlactone-functional surfaces, adduct supports prepared from such azlactone-functional supports, and methods of preparing both are disclosed. Azlactone functionality is introduced to surfaces of a pre-existing support in a manner which retains useful physical and chemical characteristics of the pre-existing support. One method involves exposing surfaces with high energy radiation to generate free radical reaction sites on the surfaces and causing azlactone-functional moieties to react with the free radical reaction sites. Another method involves coating surfaces with azlactone monomers, crosslinking monomers, and optionally co-monomers and polymerizing the monomers to form a polymerized coating of azlactone-functionality on the surfaces. Another method involves dispersion polymerization of azlactone-functional moieties to produce azlactone-functional particles within pores and interstices of a pre-existing support.Type: GrantFiled: June 20, 1994Date of Patent: September 19, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: David R. Gagnon, Patrick L. Coleman, Gary J. Drtina, Oh-Seung Kwon, Christopher S. Lyons, Dean S. Milbrath, Jerald K. Rasmussen, Julie B. Stahl
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Patent number: 5420171Abstract: A UV curable organic solvent soluble, aqueous nonalkaline soluble and peelable temporary solder mask composition to be applied to a surface to be protected, having a reactive diluent monomer capable of polymerization upon exposure to ultraviolet light and a photoinitiator serving as a free radical source to initiate polymerization.Type: GrantFiled: December 31, 1991Date of Patent: May 30, 1995Assignee: Tech Spray, Inc.Inventor: Greg R. Unruh
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Patent number: 5413863Abstract: Holographic films are disclosed that contain a binder having the following formula:(M).sub.w (VAc).sub.x (VOH).sub.y (VOS).sub.zwherein M is a fluoromonomer; VAc is vinyl acetate; VOH is vinyl alcohol; and VOS is vinyl trimethylsilyl ether; and wherein w, x, y, and z are percentages by weight; w is 5 to 30, x is 40 to 80, y is 0 to 20, and z is 2 to 30; said copolymers containing 3 to 23% by weight fluorine. These imaged films are particularly suited for lamination to glass in head-up display applications.Type: GrantFiled: November 4, 1993Date of Patent: May 9, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew M. Weber, Aleksander Beresniewicz
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Patent number: 5411994Abstract: Disclosed are graft copolymers of polyolefins and a method of preparing said graft copolymers. The method comprises irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained throughout the process while free radicals produced in the olefin polymer by the irradiation are present, thereby preventing degradation of the polymer. In a final step, residual free radicals are deactivated, and any unreacted monomer is removed.Type: GrantFiled: November 6, 1992Date of Patent: May 2, 1995Assignee: Himont IncorporatedInventors: Paolo Galli, Anthony J. DeNicola, Jr., Jeanine A. Smith
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Patent number: 5389699Abstract: UV-crosslinkable materials based on (meth)acrylate copolymers and containing from 0.01 to 10% by weight, based on the copolymer, of copolymerized monomers of the formula I ##STR1## where x is alkyl of 1 to 3 carbon atoms or is phenyl which is unsubstituted or substituted by n Y groups, Y is --H, --CF.sub.3, --O-- alkyl and/or alkyl-COO--, where alkyl in each case is of 1 to 4 carbon atoms, halogen, --CH, --COOH or a non-ortho --OH group, n is from 0 to 4 and Z is a group of the formula ##STR2## where R is H or C.sub.1 -C.sub.4 -alkyl and A is an alkylene, oxaalkylene or polyoxaalkylene radical of 2 to 12 carbon atoms are used as hotmelt adhesives, for coating sheet-like mineral substrates and as surface coatings.Type: GrantFiled: July 8, 1993Date of Patent: February 14, 1995Assignee: BASF AktiengesellschaftInventors: Gerd Rehmer, Andreas Boettcher, Michael Portugall
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Patent number: 5385956Abstract: The method concerns preparing a polymer composition containing an electrically conductive polymer which is formed, in the presence of a catalyst, from polymerizable monomer units that are converted from non-polymerizable precursor monomers with the aid of a sufficiently energy-intense light source. In this method according to the invention is that the precursor monomers have a structure according to formula (I). The method according to the invention makes it possible to very easily and rapidly, and thus economically, prepare a polymer composition containing an electrically conductive polymer. Furthermore, the method according to the invention permits a polymer composition to be produced that contains an electrically conductive polymer in specifically pre-selected areas.Type: GrantFiled: July 15, 1993Date of Patent: January 31, 1995Assignee: DSM N.V.Inventors: Ronald M. A. M. Schellekens, Hans K. Van Dijk
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Patent number: 5380772Abstract: A modelling liquid used for building up dental porcelain, comprising:(A) a photopolymerizable compound having at least one ethylenically unsaturated double bond,(B) a photopolymerization initiator,(C) a reducing agent, and(D) a polymerization inhibitor.Type: GrantFiled: May 27, 1993Date of Patent: January 10, 1995Assignee: G-C Toshi Kogyo CorporationInventors: Akira Hasegawa, Tsugumichi Kawasaki
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Patent number: 5361616Abstract: A coating composition having photopolymerizability and heat curability, which comprises, as main components,(A) a vinyl copolymer having polymerizable double bonds and crosslinkable hydroxyl groups,(B) a condensation polymerizable compound of the following formula (i) or a condensation polymer thereof, and(C) a photopolymerization initiator: ##STR1## wherein each of the plurality of R which may be the same or different, is --H, --CH.sub.2 OH, --CH.sub.2 OCH.sub.3, --CH.sub.2 OC.sub.4 H.sub.Type: GrantFiled: June 9, 1992Date of Patent: November 8, 1994Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Toshiya Takahashi, Norio Uriya, Yoshihisa Nagashima
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Patent number: 5356950Abstract: A grafted polymer of an isomonoolefin and an alkylstyrene, such as a maleic anhydride-grafted copolymer of isobutylene and para-methylstyrene, is provided. Processes for preparing the grafted polymer are also provided.Type: GrantFiled: April 26, 1993Date of Patent: October 18, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Donald A. White, Hsien C. Wang
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Patent number: 5344701Abstract: Supports having azlactone-functional surfaces, adduct supports prepared from such azlactone-functional supports, and methods of preparing both are disclosed. Azlactone functionality is introduced to surfaces of a pre-existing support in a manner which retains useful physical and chemical characteristics of the pre-existing support. One method involves exposing surfaces with high energy radiation to generate free radical reaction sites on the surfaces and causing azlactone-functional moieties to react with the free radical reaction sites. Another method involves coating surfaces with azlactone monomers, crosslinking monomers, and optionally co-monomers and polymerizing the monomers to form a polymerized coating of azlactone-functionality on the surfaces. Another method involves dispersion polymerization of azlactone-functional moieties to produce azlactone-functional particles within pores and interstices of a pre-existing support.Type: GrantFiled: June 9, 1992Date of Patent: September 6, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: David R. Gagnon, Patrick L. Coleman, Gary J. Ortina, Christopher S. Lyons, Dean S. Milbrath, Jerald K. Rasmussen, Julie B. Stahl
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Patent number: 5314962Abstract: An acrylate is polymerized by the photo-decomposition of ##STR1## to make a polymeric intermediate containing dithiocarbamate groups at both its ends, and a hard polymer-forming monomer is polymerized by the photo-decomposition of this dithiocarbamate group-containing polymeric intermediate to form blocks of a polymer of said hard polymer-forming monomer on both sides of said polymeric intermediate, thereby forming an ABA type block copolymer.Type: GrantFiled: June 29, 1993Date of Patent: May 24, 1994Assignee: Mitsubishi Petrochemical Company LimitedInventors: Takayuki Otsu, Shunichi Himori, Takashi Kiriyama
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Patent number: 5264533Abstract: UV-crosslinkable materials based on (meth)acrylate copolymers and containing special modified unsaturated benzophenone derivatives as copolymerized units are used as hotmelt adhesives, for coating sheet-like mineral substrates and as surface coatings.Type: GrantFiled: August 1, 1991Date of Patent: November 23, 1993Assignee: BASF AktiengesellschaftInventors: Gerd Rehmer, Andreas Boettcher, Michael Portugall
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Patent number: 5250389Abstract: Disclosed is a photosensitive elastomer composition comprising (1) a thermoplastic block copolymer comprising at least one monovinyl substituted aromatic hydrocarbon polymer block and at least one conjugated diene polymer block, wherein a monovinyl substituted aromatic hydrocarbon content (A) is 10 to 35% by weight, and the vinyl content (V) of a conjugated diene is 20 to 50%, and the (A) and the (V) satisfy the formula: 40.ltoreq.(A)+(V).ltoreq.70; (2) an ethylenically unsaturated compound component; and (3) a photopolymerization initiator.Type: GrantFiled: May 12, 1992Date of Patent: October 5, 1993Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Shohei Nakamura, Kousi Anai
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Patent number: 5230987Abstract: Disclosed is a water developable photosensitive resin composition suitable for a printing plate, which has excellent dimensional stability and excellent chemical and physical properties. The photosensitive resin composition comprises;(A) an acrylic resin of which glass transition temperature (T.sub.g), as defined by ##EQU1## [wherein T.sub.g1, T.sub.g2, . . . represents a glass transition temperature of a homopolymer prepared from each monomer, T.sub.g0 represents a glass transition temperature of a copolymer and W.sub.1, W.sub.2, . . . shows a weight fraction of each monomer.] and acid value (AV) satisfy the following relations;60.degree. C..ltoreq.T.sub.g .ltoreq.125.degree. C.80 mg KOH/g.ltoreq.AV.ltoreq.130 mg KOH/g, andT.sub.g -10.ltoreq.AV.ltoreq.T.sub.g +40(B) a basic nitrogen atom-containing compound(C) an ethylenically unsaturated monomer, and(D) a photopolymerization initiator.Type: GrantFiled: May 29, 1990Date of Patent: July 27, 1993Assignees: Nippon Paint Co. Ltd., Mitsubishi Rayon Co., Ltd.Inventors: Toshitaka Kawanami, Yasushi Umeda, Norihisa Osaka
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Patent number: 5227279Abstract: Disclosed is a polymer having a group represented by the following formula (I) or (II) in a side chain on a main chain consisting of carbon-carbon bonds: ##STR1## [wherein X is an oxygen atom, a sulfur atom or N--R.sup.1, R.sup.1 is a hydrogen atom, an alkyl group containing 1 to 3 carbon atoms or CH.sub.2 CO.sub.2 H], said group being decarboxylated by photo-reaction of its own or by photo-reaction with a photo-sensitizer which absorbs light to generate a free radical.Type: GrantFiled: March 24, 1992Date of Patent: July 13, 1993Assignee: Nippon Paint Co., Ltd.Inventor: Masami Kawabata
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Patent number: 5221589Abstract: Disclosed is a photosensitive resin composition which, can be hot melt molding and and is water-developable. The composition does not need the preliminary exposure process and when cured has suitable hardness and printing properties. The photosensitive resin composition comprises;(A) a water soluble or water dispersible polyvinyl alcohol prepared by saponifying a copolymer obtained by copolymerizing 90 to 99.9 mol % of a vinyl ester and 0.1 to 10 mol % of an ionic group-containing monomer; said polyvinyl alcohol having a saponification degree of the vinyl ester unit of 60 to 75 mol % and a hot melt flow starting temperature of 95.degree. to 170.degree. C.,(B) a polymerizable compound prepared by reacting in the presence of an acid catalyst, (i) N-methylol (meth)acrylamide or N-alkoxymethyl (meth)acrylamide and (ii) a compound selected from the group consisting of monoalcohols, polyhydric alcohols, amides, haloalkylamides, aromatic compounds, ureas and mixtures thereof, and(C) a photopolymerization initiator.Type: GrantFiled: April 3, 1991Date of Patent: June 22, 1993Assignee: Nippon Paint Co., Ltd.Inventors: Osamu Nanba, Chitoshi Kawaguchi, Seiji Arimatsu, Kazunori Kanda
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Patent number: 5202361Abstract: Radiation-curable, tackifier-free compositions are provided which contain: (i) a blend of certain acrylate esters and monoethylenically-unsaturated copolymerizable monomers; (ii) certain .alpha.-olefin polymers; and (iii) a photoinitiator and optionally, a crosslinker. Pressure-sensitive adhesives having good adhesion to both low and high energy surfaces as well as possessing excellent low and high temperature performance properties are prepared by exposing the radiation-curable compositions to light having a wavelength in the range of from about 280 to 400 nm.Type: GrantFiled: December 23, 1991Date of Patent: April 13, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Patrick G. Zimmerman, Gaddam N. Babu, Lang N. Nguyen, Ingrid E. Blair, George F. Vesley
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Patent number: 5196478Abstract: This invention relates to radio-derivatized polymers and a method of producing them by contacting non-polymerizable conjugands with radiolysable polymers in the presence of irradiation. The resulting radio-derivatized polymers can be further linked with ligands of organic or inorganic nature to immobilize such ligands.Type: GrantFiled: April 9, 1990Date of Patent: March 23, 1993Assignee: Epipharm Allergie-Service Gesellschaft m.b.H.Inventors: Janos M. Varga, Peter Fritsch
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Patent number: 5194454Abstract: According to the invention the material, in particular a textile, includes in its polymeric structure grafts forming complexes with at least one metal ion possessing recognized antiseptic activity. These grafts are formed by polymerization of unsaturated monomers with a complexing function, including the phosphate of ethylene glycol methacrylate or a polymerizable derivative of quinoline such as acryl 8-hydroxy quinoline. The process of preparation comprises a first step of grafting, for example by electronic irradiation of the material and impregnation with a bath of monomer, and a second step of impregnation of the grafted material with one or serveral baths containing the metal ion(s), such as copper, zinc, tin, mercury.Type: GrantFiled: January 29, 1991Date of Patent: March 16, 1993Assignee: Centre Technique Industriel dit: Institut Textile De FranceInventors: Roger Chatelin, Louis Gavet, Michel Bourgeois, Christine Darroux
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Patent number: 5185188Abstract: A method for surface treating a resin composition molded article and a method for coating a resin composition molded article are disclosed, which comprise irradiating a molded article with ultraviolet light having an irradiation wavelength in the region of 300 nm or less and, if desired, coating the thus UV-irradiated surface with a coating, the molded article being obtained from a resin composition comprising (I) 100 parts by weight of a resin composition comprising (A) from 5 to 99.5% by weight of a polypropylene resin selected from the group consisting of polypropylene, modified polypropylene, and a modified polypropylene/polypropylene composition and (B) from 0.Type: GrantFiled: November 21, 1990Date of Patent: February 9, 1993Assignee: Sumitomo Chemical Co., Ltd.Inventors: Hiroomi Abe, Hideo Shinonaga, Kiyoshi Mitsui, Satoru Sogabe
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Patent number: 5164424Abstract: A polymer is disclosed which has a betaine structure on at least one side chain. The polymer according to this invention is suitable for use as a material for producing a pervaporation membrane. A process is described for producing the polymer according to this invention whereby betaine groups are introduced into a starting polymer. The betaine groups are introduced into the starting polymer by irradiation of the starting polymer with ionizing radiation and then treatment of the irradiated starting polymer with monomers that are capable of a graft reaction. Monomers that either already contain a betaine function or are capable of forming such a function are used. The betaine can be formed, e.g., by alkylating quaternation of a nitrogen atom present in the monomer if an acid group is introduced simultaneously with the alkylating agent.Type: GrantFiled: March 25, 1991Date of Patent: November 17, 1992Assignee: Deutsche Carbone AGInventors: Hartmut E. A. Brueschke, Guenter F. Tuesel, Guido Ellinghorst, Axel Niemoeller
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Patent number: 5143947Abstract: Radiation curable compositions useful as coatings for wood, metal, glass, fabric, paper, fiber and plastics are made from copolymers of 4-hydroxystyrene and an alkadiene or an allyl ester of an ethylenically unsaturated acid blended wit ethylenically unsaturated compounds.Type: GrantFiled: November 13, 1989Date of Patent: September 1, 1992Assignee: Hoechst Celanese CorporationInventor: Balaram Gupta
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Patent number: 5096790Abstract: A new class of sensitizers for photopolymerizable compositions is disclosed derived from cyclic ketones and tricyclic aminoaldehydes. A preferred compound is cyclopentanone, 2.Type: GrantFiled: July 16, 1990Date of Patent: March 17, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Bruce M. Monroe
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Patent number: 5079047Abstract: The current invention provides a photopolymerized pressure-sensitive adhesive which adheres well to all common surfaces and has an outstanding ability to bond to plasticized vinyl substrates and to remain firmly bonded thereto even after the in contact therewith for extended periods of time comprising the photopolymerization reaction product of a mixture containing about: 60-95 parts of alkyl acrylate; 5-40 parts monoethylenically unsaturated polar copolymerizable monomer; 10-30 parts ethylene vinylacetate copolymer containing about 40% to 70% vinylacetate; and 0.1-1 part photoinitiator.Type: GrantFiled: May 12, 1989Date of Patent: January 7, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Yvan A. Bogaert, Martine H. A. Deketele
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Patent number: 5075347Abstract: An improved process for forming hydroperoxide derivatives of rubbery polymers. The hydroperoxide derivatives being particularly well suited for use as intermediates in forming graft rubbery polymers. The process involves dissolving a rubbery polymer in a monomer mixture and adding to the rubbery polymer/monomer mixture a photosensitizing agent. The rubbery polymer-monomer mixture is then oxygenated and exposed to light under conditions wherein triplet oxygen is converted to singlet oxygen. The improvement comprises adding to the rubbery polymer/monomer mixture a solvent capable of solubilizing the photosensitizing agent in the rubbery polymer/monomer mixutre. The solubilizer increases the yield of hydroperoxide derivatives of rubbery polymers formed by a factor of 3.Type: GrantFiled: January 23, 1989Date of Patent: December 24, 1991Assignee: The Dow Chemical CompanyInventors: Alan E. Platt, Jerry L. Hahnfeld, David A. Habermann
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Patent number: 5057390Abstract: A photosensitive composition characterized by comprising:(a) a vinyl alcohol polymer containing the following structural unit A and having a saponification degree of a vinyl ester unit of not less than 70 mol %: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represents H or a hydrocarbon group having 1 to 4 carbon atoms;(b) a radically polymerizable ethylenic unsaturated compound; and,(c) a photopolymerization initiator,having flexiblity and impact resistance which can maintain sufficient softness but are not broken particularly even at low temperature and low humidity so that resin plates showing high printing quality can be obtained from the photosensitive composition.Type: GrantFiled: November 20, 1986Date of Patent: October 15, 1991Assignee: Kuraray Company, Ltd.Inventors: Toshiaki Sato, Junnosuke Yamuchi, Takuji Okaya
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Patent number: 5026742Abstract: Radiation-crosslinkable contact adhesive mixtures are prepared from polymers having a glass transition temperature of less than 0.degree. C. and a K value of from 20 to 80, derivatives of dihydroxypropyl (meth)acrylates as reactive diluents and small amounts of polymerizable tertiary amino compounds by a process in which the mixture is heated at from 80.degree. to 120.degree. C. for not more than 2 hours and solvents are then separated off under atmospheric or reduced pressure.Type: GrantFiled: August 15, 1989Date of Patent: June 25, 1991Assignee: BASF AktiengesellschaftInventor: Gerd Rehmer
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Patent number: 5002975Abstract: Liquid, photocurable coating compositions containing nitrile copolymers. Such compositions comprises from about 10 percent to about 60 percent by weight of a high nitrile copolymer, containing at least about 70 percent by weight of a nitrile polymer; from about 30 percent to 90 percent by weight of a photopolymerizable solvent for the high nitrile copolymer, wherein the photopolymerizable solvent is selected from the group consisting of N-vinyl pyrrolidone, cyanoethylacrylate, styrene, N,N-dimethylacylamide, N,N-methylenebisacrylamide, gamma-butyrolactone and combinations thereof, and from about 0.1 percent to about 10 percent by weight of a photoinitiator soluble in the photopolymerizable solvent for curing the high nitrile copolymer with the incorporation of at least 50 percent by weight of the solvent therein upon exposure to ultraviolet radiation, having a wavelength of from about 2000 .ANG. to 14,000 .ANG.Type: GrantFiled: December 23, 1988Date of Patent: March 26, 1991Assignee: The Standard Oil CompanyInventors: Rosemary Bartoszek-Loza, Richard J. Butler
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Patent number: 4996134Abstract: A conjugated diene copolymer comprising (A) 10 to 60 mole % of a conjugated diene compound unit, (B) 5 to 50 mole % of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid unit, (C) 0.1 to 20 mole % of a polyfunctional alkenyl compound unit, (D) 0 to 10 mole % of a diene compound unit having cyclic carbon-carbon double bonds and (E) 0 to 80 mole % of a monoolefinically unsaturated compound unit, the sum of the amounts of units (A), (B), (C), (D) and (E) being 100 mole %, said copolymer having an intrinsic viscosity [.eta.] of 0.01 to 3.0 dl/g as measured at 30.degree. C. in dimethylformamide. The copolymer is soluble in aqueous alkali solutions, excels in processability and photosetting property, and has excellent rubber elasticity and transparency even after photosetting.Type: GrantFiled: March 26, 1985Date of Patent: February 26, 1991Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Hiroji Enyo, Shin-ichiro Iwanaga, Yasuhiko Takemura
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Patent number: 4987053Abstract: Compounds of the general formula I ##STR1## are described in which Q denotes ##STR2## R denotes alkyl, hydroxyalkyl or aryl, R.sup.1 and R.sup.2 denote H, alkyl or alkoxyalkyl,R.sup.3 denotes H, methyl or ethyl,D.sup.1 and D.sup.2 denote saturated hydrocarbon groups,E denotes alkylene, cycloalkylene, arylene, saturated or unsaturated heteroyls or a group of the formula II ##STR3## a and b denote integers from 1 to 4. c denotes an integer from 1 to 3,m denotes 2, 3 or 4, depending on the valency of Q, andn denotes an integer from 1 to m, where all radicals of the same definition may be identical to or different from one another.The compounds are suitable as polymerizable compounds for photopolymerizable mixtures and are distinguished by ready polymerizability in combination with photoinitiators and long shelf lives in the layer.Type: GrantFiled: November 14, 1988Date of Patent: January 22, 1991Assignee: Hoechst AktiengesellschaftInventors: Joachim Gersdorf, Klaus Rose
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Patent number: 4980269Abstract: A photosensitive elastomeric composition comprising (1) at least one elastomer, (2) an addition-polymerizable compound having at least one CH.sub.2 .dbd.C< group and (3) a polymerization initiator activatable by actinic light, wherein the elastomer (1) is an elastomer selected from (a) an elastomeric polymer composed of a polyene monomer containing at least two non-conjugated double bonds and a conjugated diene-type monomer or both a conjugated diene-type monomer and a copolymerizable vinyl monomer and (b) an elastomeric linear A-B type (wherein A represents a polymer block of a monovinyl aromatic compound and B represents a polymer block of a conjugated diene-type monomer) block copolymer in which a terminal group having a polymerizable ethylenic double bond is present in at least one end of the molecular chain.Type: GrantFiled: May 11, 1988Date of Patent: December 25, 1990Assignee: Nippon Zeon Co., Ltd.Inventors: Fusayoshi Sakurai, Hiroto Kidokoro, Mitsuhiro Tamura
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Patent number: 4959178Abstract: An actinic radiation curable polymer thick film composition comprising by weight:(a) about 10 to about 20 parts of an unsaturated monomer capable of being polymerized by actinic radiation;(b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100.degree. F. and not capable of being substantially cross-linked with monomer (a) and said polymer (b) is dissolved in monomer (a);(c) about 68 to about 85 parts of conductive metal particles; and(d) about 0.1 to about 5 parts of at least one actinic radiation polymerization initiator.Type: GrantFiled: January 27, 1987Date of Patent: September 25, 1990Assignee: Advanced Products Inc.Inventors: Richard L. Frentzel, Noel C. Peralta
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Patent number: 4957852Abstract: In hot embossing plates which are crosslinkable by photopolymerization and comprise(a) a heat-stable, dimensionally stable base and(b) a relief-forming layer which is crosslinkable by photopolymerization and soluble or dispersible in water and contains(b.sub.1) one or more partially or virtually completely hydrolyzed polyvinyl alkanecarboxylates as binders,(b.sub.2) one or more alkenecarbonylamino-N-methylene ethers of polyhydric alcohols as photopolymerizable monomers and(b.sub.3) photopolymerization initiators,the relief-forming layer (b) contains, as further binders (b.sub.1),(b.sub.11) alkenecarboxylates and/or alkenecarbonylamino-N-methylene ethers of partially or virtually completely hydrolyzed polyvinyl alkanecarboxylates and/or(b.sub.12) alkenecarboxylates and/or alkenecarbonylamino-N-methylene ethers of partially or virtually completely hydrolyzed graft copolymers of vinyl alkanecarboxylates and alkylene oxides,and is more than 0.8 mm thick.Type: GrantFiled: June 10, 1988Date of Patent: September 18, 1990Assignee: BASF AktiengesellschaftInventor: Bernd Bronstert
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Patent number: 4952481Abstract: There is hereby provided a photosensitive resin composition suitable for a relief printing plate having an excellent resistance to a water based ink, whereby water or a water like solvent can be employed as a developing solution, which comprises;(i) a polymer (A) having a molecular weight of 5,000 to 500,000 which contains an amino group and a polymerizable double bond moiety,(ii) a monomer (B) having an .alpha.,.beta.-ethylenically unsaturated bond and a free acid group which can quaternize the nitrogen atom of the polymer (A),(iii) a photopolymerizable unsaturated compound (C), and(iv) a photopolymerization initiator (D).Type: GrantFiled: December 27, 1988Date of Patent: August 28, 1990Assignee: Napp Systems (USA), Inc.Inventors: Mamoru Seio, Hidefumi Kusuda, Masami Kawabata
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Patent number: 4950549Abstract: Polypropylene articles are provided. The polypropylene articles comprise non-crystalline mesomorphous polypropylene having olefinic unsaturation-containing monomers graft-polymerized thereon by ionizing radiation in a dosage sufficient to degrade crystalline polypropylene. The irradiated polypropylene articles retain useful tensile properties after storage periods of as long as at least about four months.Type: GrantFiled: March 20, 1989Date of Patent: August 21, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Dennis L. Krueger, Daniel E. Meyer, Thomas I. Insley
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Patent number: 4942112Abstract: Solid photopolymerizable compositions and photosensitive elements are provided that are useful in preparing optical elements, and especially holograms. The composition contains a polymeric binder, a liquid ethylenically unsaturated monomer, and a photoinitiator system. Typical compositions have a refractive index modulation of at least 0.005 when measured per the specified test.Type: GrantFiled: January 15, 1988Date of Patent: July 17, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Bruce M. Monroe, William K. Smothers
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Patent number: 4942001Abstract: A stereolithographic method which employs an ultraviolet-curable liquid composition adapted to cure rapidly to a lightly cross-linked solvent-swellable three-dimensional complexly-shaped polymeric thin-walled element constituted by heat-softenable solid polymer upon exposure to ultraviolet dosage in the range of about 0.1 to about 10 Joules per square centimeter and which possesses reduced distortion comprises, from 20 to 80 weight percent, of a resinous polyacrylate or polymethacrylate dissolved in a combination of 10 to 45 weight percent of a liquid polyacrylate or polymethacrylate, which is preferably trifunctional, and 10 to 45 weight percent of liquid N-vinyl monomer, preferably N-vinyl pyrrolidone. Thus, the weight ratio of polyacrylate: polymethacrylate: N-vinyl monomer is about 1:2:2 to about 8:1:1. One of the foregoing polyacrylates or polymethacrylates is a polyacrylate and the other is a polymethacrylate so that good cure speed is accompanied by good distortion resistance.Type: GrantFiled: October 31, 1989Date of Patent: July 17, 1990Assignee: Inc. DeSotoInventors: Edward J. Murphy, Robert E. Ansel, John J. Krajewski
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Patent number: 4933260Abstract: A water-based photopolymerizable resin composition is disclosed which is suitable for the preparation of a relief printing plate by the photolithographic techniques. The inventive composition, which basically comprises a water-soluble polymer, e.g., poly(vinyl alcohol), a photopolymerizable monomer and a photopolymerization initiator, is characterized in that at least a part of the photopolymerizable monomer is N-tetrahydrofurfuryloxymethyl acrylamide or N-tetrahydrofurfuryloxymethyl methacrylamide. By virtue of this unique ingredient in the composition, the printing plate prepared from the inventive composition is imparted with improved fidelity of pattern reproduction and durability in printing as a consequence of increased hardness and pliability to be freed from the drawback of crack formation in printing even on a cylinder of small diameter under a cold and low-humidity condition.Type: GrantFiled: August 31, 1989Date of Patent: June 12, 1990Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Naoya Katsumata, Syunzi Nakazato, Katsuyuki Ohta, Toshimi Aoyama
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Patent number: 4927738Abstract: A conjugated diene copolymer comprising (A) 40 to 90 mole % of a conjugated diene component, (B) 0.5 to 10 mole % of an alpha,beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound component and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component wherein the intrinsic viscosity [.eta.] of the copolymer as measured at 30.degree. C. in dimethylformamide is 0.01 to 3.0 dl/g, the width (.DELTA.Tg) of the endothermic transition temperature section determined by a differential scanning calorimetry is 45.degree. to 120.degree. C. and the limit temperature (T.sub.1) on the lower temperature side of the endothermic transition temperature section is -40.degree. C. or less.Type: GrantFiled: November 24, 1987Date of Patent: May 22, 1990Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Shin-ichiro Iwanaga, Tatsuaki Matsunaga, Ituo Nishiwaki, Hiroji Enyo
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Patent number: 4897433Abstract: A process for producing a medical material having high anti-thrombogenicity that is suitable for use in catheters and other medical devices in contact with blood flowing in circulatory organs and other tissues is disclosed. According to this process, an acrylamide or methacrylamide derivative having a tertiary amino group, or an unsaturated monomer having a hydrophihlic group and the ability to promote copolymerization, or a mixture thereof is graft polymerized onto a polyurethane elastomeric or polyolefinic high-molecular weight substrate with an ionizing radiation.Type: GrantFiled: December 3, 1987Date of Patent: January 30, 1990Assignees: Japan Atomic Energy Research Inst., Sumitomo Bakelite Co., Ltd.Inventors: Takanobu Sugo, Jiro Okamoto, Seiryo Tasaki, Tadayuki Onishi
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Patent number: 4865743Abstract: For producing solution/diffusion membranes, homogeneous dense films prepared by melt extrusion or casting from synthetic polymers, having a melting temperature above 140.degree. C., a glass transition temperature above 0.degree. C. and long time stability against boiling ethanol are irradiated with accelerated electrons and submitted to a subsequent radical graft copolymerization. After graft polymerzation, the functional groups are converted into the dissociated salts.Type: GrantFiled: December 29, 1986Date of Patent: September 12, 1989Assignee: GFT Gesellschaft fur Trenntechnik mbhInventors: Guido Ellinghorst, Bernd Goetz, Axel Niemoeller, Horst Scholz, Hartmut E. A. Brueschke, Guenter Tusel
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Patent number: 4851454Abstract: Photolytically crosslinkable thermally stable compositions comprising at least one crosslinkable polymer and a crosslinkable quantity of a multifunctional 3,4-disubstituted maleimide. The compositions may be employed to prepare adhesives and photo printing mats.Type: GrantFiled: October 26, 1987Date of Patent: July 25, 1989Assignee: The Dow Chemical CompanyInventors: Jerry E. White, Lu Ho Tung, Mary K. Dehnke
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Patent number: 4849307Abstract: The invention relates to a novel photosensitive recording material which can be developed in aqueous solvents after its imagewise irradiation with actinic light and which consists essentially of a dimensionally stable base (A) and of a photosensitive recording layer (B). The said photosensitive recording layer (B) contains from about 48 to about 85% by weight, based on the photosensitive recording layer (B) of one or more elastomeric graft copolymers (B1) which are selected from the group consisting of polyalkylene oxide - vinyl ester - graft copolymers whose vinyl ester structural units have been hydrolyzed to a degree of not less 50 mol.-% from about 0.01 to about 10% by weight, based on the photosensitive recording layer (B), of one or more photoinitiators (B2), and from about 5 to about 30% by weight, based on the photosensitive recording layer (B), of one or more photopolymerizable monomers (B3).Type: GrantFiled: December 8, 1987Date of Patent: July 18, 1989Assignee: BASF AktiengesellschaftInventors: Gerhard Hoffmann, Horst Koch, Guenther Schulz