Containing C-co-c(r)(or) Wherein R Is Organic, E.g., Diethoxyacetophenone, Etc. Patents (Class 522/44)
  • Patent number: 6197173
    Abstract: Polymerization of gels for electrophoresis with improved photoinitiators results in gels which are suitable for electrophoresis. The new initiator systems are much faster than current systems for making such gels. Moreover, the polymerization reaction can be conducted in the presence of oxygen, which greatly simplifies gel casting. In particular, it is possible with the invention to cast and use gels of acrylic monomers in a “submarine” mode, which was not previously possible with acrylamide gels. Continuous casting of gels is facilitated.
    Type: Grant
    Filed: June 26, 1999
    Date of Patent: March 6, 2001
    Inventor: Francis H. Kirkpatrick
  • Patent number: 6156816
    Abstract: A substantially water-free, water-washable, energy-curable composition includes an epoxy oligomer and/or urethane oligomer having at least two ethylenically unsaturated moieties, at least one alkoxylated polyol monomer having at least two ethylenically unsaturated moieties and capable of being copolymerized with the oligomer, and a surface active agent capable of being integrated into the molecular structure of the cured polymer and further capable of rendering the uncured composition dispersible in water. Optionally, the composition can contain a photoinitiator. The composition is self-dispersible in water and is especially suitable for use as a coating material for a printing screen.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: December 5, 2000
    Assignee: Henkel Corporation
    Inventor: Marie-Esther Saint Victor
  • Patent number: 6133336
    Abstract: Process for forming a selectively colored polymeric layer, or a three-dimensional article made of polymeric layers, wherein a photocurable, photocolorable composition is irradiated with a low dose of light to cure and a different, preferably higher, dose of light to color. The process is particularly useful for preparing selectively colored ornamental and industrial articles and models of plant and animal parts, especially medical models.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: October 17, 2000
    Assignee: Zeneca Limited
    Inventors: Ajay Haridas Popat, Martin Russell Edwards
  • Patent number: 6130269
    Abstract: A thermosetting pressure-sensitive adhesive comprising a photopolymerization product of a composition containing a) 100 parts by weight of a (meth) acrylic acid alkyl ester wherein the average carbon atom number of the alkyl group is from 2 to 14 and from 30 to 1% by weight of a monoethylenically unsaturated acid copolymerizable with the ester, b) from 0.02 to 5 parts by weight of a polyfunctional (meth)acrylate as a crosslinking agent, c) from 0.01 to 4 parts by weight of a photopolymerization initiator, and d) from 5 to 30 parts by weight of an epoxy resin, and not substantially containing a curing agent for the epoxy resin, and an adhesive sheet using the thermosetting type pressure-sensitive adhesive.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: October 10, 2000
    Assignee: Nitto Denko Corporation
    Inventors: Kazuhito Hosokawa, Shigeki Muta, Hitoshi Takahira, Takao Yoshikawa
  • Patent number: 6099415
    Abstract: Ultraviolet radiation curing of inks on game balls, golf balls and the like is disclosed. Production inks, logo inks and methods for forming production prints and logos on golf balls, game balls and the like are disclosed. To form an ultraviolet radiation curable water-insoluble production ink, at least an adhesion promoting component is added to an ink base.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: August 8, 2000
    Assignee: Acushnet Company
    Inventor: Mitchell E. Lutz
  • Patent number: 6096483
    Abstract: The present invention provides a curable composition which comprises (A) a base-generating substance which generates a base when exposed to the action of ultraviolet light, (B) a siloxane polymer which has silicon-hydrogen bonds (Si--H) capable of reacting with hydroxy groups under the effect of the base to form silicon-oxygen bonds (Si--O) and hydrogen molecules (H.sub.2), and (C) an acid substance. This composition is cured by irradiation with ultraviolet light. During this ultraviolet irradiation, a mask is placed between a coating film of the composition and the radiation source, and the uncured portions of the composition are dissolved and removed so that a pattern is formed. The residual portions are then heated to produce a pattern-cured product.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: August 1, 2000
    Assignee: Dow Corning Asia, Ltd.
    Inventors: Brian R. Harkness, Mamoru Tachikawa, Kasumi Takei
  • Patent number: 6090236
    Abstract: A method of generating reactive species which includes exposing a polymolecular photoreactor to radiation, in which the polymolecular photoreactor comprises a wavelength-specific sensitizer associated with a reactive species-generating photoinitiator. The sensitizer absorbs energy and transfers the absorbed energy to the photoinitiator which in turn, generates reactive species. The wavelength-specific sensitizer is adapted to have an absorption wavelength band generally corresponding to an emission peak of the radiation. The radiation to which the polymolecular photoreactor is exposed generally will have a wavelength of from about 4 to about 1,000 nanometers. Thus, the radiation may be ultraviolet radiation, including near ultraviolet and far or vacuum ultraviolet radiation: visible radiation: and near infrared radiation. Desirably, the radiation will have a wavelength of from about 100 to about 900 nanometers.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: July 18, 2000
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ronald Sinclair Nohr, John Gavin MacDonald
  • Patent number: 6066435
    Abstract: A photosensitive composition which is liquid at room temperature and which comprisesa) 18 to 22% by weight of a binder polymer based on a styrene-maleic anhydride halfester copolymer,b) 10 to 15% by weight of at least one photocurable acrylate compound,c) 0.1 to 10% by weight of a photoinitiator, andd) 45 to 70% by weight of a propylene glycol halfester or propylene glycol halfester, the sum of the components a) to d) being 100% by weight,is suitable for the production of photostructured objects, preferably for the production of telephone cards.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: May 23, 2000
    Assignee: CIBA Specialty Chemicals Corp.
    Inventor: Kurt Munk
  • Patent number: 6054502
    Abstract: A radiation curable coating composition comprising: (A) an unsaturated polyester component; and (B) a non-polymerized, cocurable vinyl ether component. Component (B) may be separate from or structurally incorporated in the unsaturated polyester component. The vinyl ether component contains an average of at least two vinyl ether groups per molecule of the vinyl ether component.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: April 25, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Charles B. Friedlander, David A. Diehl
  • Patent number: 6048911
    Abstract: Coated optical fibers comprise a glass optical fiber and a radiation-cured coating formed from a radiation-curable liquid coating composition. The liquid coating composition comprises at least one aliphatic urethane acrylate oligomer, at least one acrylated or methacrylated compound selected from the group consisting of isobornyl acrylate, isobornyl methacrylate, alkanediol diacrylate, alkanediol dimethacrylates, alkoxylated derivatives thereof, and mixtures thereof, and a photoinitiator. In one embodiment, the compositions further include a silicone compatibility agent which reduces the coefficient of friction of the radiation-cured coating without disadvantageously effecting other physical properties of the liquid coating compositions or the cured coating, and particularly without disadvantageously effecting the optical clarity of the liquid coating compositions.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: April 11, 2000
    Assignee: Borden Chemical, Inc.
    Inventors: Paul J. Shustack, Daniel A. Wilson
  • Patent number: 6030703
    Abstract: Composition suitable for free radical, radiation curable coating comprising at least one polyester having unsaturated backbone and at least one compound having two to six propenyl ether groups, and optionally, a free radical photoinitiator. The equivalent ratio of propenyl ether groups to maleimide, maleate and/or fumarate groups in the polyester is preferably about 5:1 to about 1:5.The process for curing the composition includes exposing it to ionizing radiation and/or ultraviolet light. The resultant cured coatings and coated articles are similar in performance to their vinyl ether analogues, but the propenyl ethers are easier to prepare than the vinyl ether analogues.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: February 29, 2000
    Assignee: Sartomer Company, Inc.
    Inventors: Mingxin Fan, Gary W. Ceska, James Horgan, Nicholas Trainer
  • Patent number: 6008269
    Abstract: [Problem] To provide ultraviolet hardening type ink compositions with a temperature-sensitive color change property, which has both the hardening property and the printing strength of UV ink and also has an excellent light resistance.[Solution] Ultraviolet hardening type ink compositions comprising microcapsules with a temperature-sensitive color change property and a photopolymerization initiator, wherein said microcapsules contain no ultraviolet absorber and have the mean diameter of 0.5-50 .mu.m whereas said photopolymerization initiator comprises at least one of the compounds selected from ace tophenone type compounds and benzophenone type compounds.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: December 28, 1999
    Assignee: Matsui Shikiso Chemical Co., Ltd.
    Inventors: Yosuke Kitagawa, Ryuichi Hoshikawa
  • Patent number: 5998496
    Abstract: A compound of the general formula:A-L.sup.+ D.sup.-where A is a moiety which absorbs radiation and enters an excited state in which it accepts an electron; D.sup.- is a moiety which donates an electron to the excited state A and releases a free radical; and L.sup.+ is a cationic linking group which tethers electron acceptor moiety A to electron donor moiety D.sup.-. Cationic linking moiety L.sup.+ has the formula:-L'-G-where L' is a moiety which forms a stable radical with acceptor moiety A upon transfer of an electron from donor moiety D.sup.- to electron acceptor moiety A, and G is a moiety which forms a leaving group upon transfer of the electron from donor moiety D.sup.- to acceptor moiety A.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: December 7, 1999
    Assignee: Spectra Group Limited, Inc.
    Inventors: Salah A. Hassoon, Ananda M. Sarker, Douglas C. Neckers
  • Patent number: 5994033
    Abstract: A screen printing stencil made from a composition comprising polyhydroxy compounds having a plurality of 1,2- or 1,3-diol groups along a polymer backbone, the diol groups grafted thereto a compound of formula (I) (where A is an arylene or an alkylene group; X is an oxygen atom, a sulfur atom, a carbon-carbon bond, or a group of formula (a), (b) or (c); R is a hydrogen atom or a methyl group; R.sup.1 is a (C.sub.1 -C.sub.4) alkyl group; m is an integer of from 1 to 8; n is an integer of from 1 to 3; and p is 1 or 2); or an acetal of the polyhydroxy, compound with ethylene glycol.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: November 30, 1999
    Assignee: Sericol Limited
    Inventors: Robert S. Davidson, Stuart J. Palmer, Julie E. Pratt, Stephen P. Wilson
  • Patent number: 5973021
    Abstract: Organosiloxane compositions that cure in the presence of ultraviolet radiation comprise a alkenyl-substituted fluorinated polyorganosiloxane, a mercaptoalkyl-substituted fluorinated polyorganosiloxane and a photoinitiator. The cured compositions are particularly useful as coating and encapsulants to protect electronic devices that are exposed to hydrocarbon fuels.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: October 26, 1999
    Assignee: Dow Corning Corporation
    Inventors: James Anderson Beck, Myron Timothy Maxson, Bernard VanWert
  • Patent number: 5948514
    Abstract: A photocurable and thermosetting resin composition developable with an aqueous alkali solution is disclosed. The composition comprises in combination: (A) a photosensitive prepolymer soluble in a dilute aqueous alkali solution obtained by esterifying an epoxy resin represented by the following general formula (1) with (meth)acrylic acid and further adding an acid anhydride thereto until an acid value reaches a level in the range of 60 to 120 mg KOH/g, (B) a diglycidyl ether type epoxy compound containing two epoxy groups in the molecular unit thereof, (C) a photopolymerization initiator, and (D) a diluent at such ratios of combination that said epoxy compound (B) accounts for a proportion in the range of 5 to 120 parts by weight and said photopolymerization initiator (C) for a proportion in the range of 0.1 to 30 parts by weight, based on 100 parts by weight of said photosensitive prepolymer (A): ##STR1## wherein X represents CH.sub.2, C(CH.sub.3).sub.2, or SO.sub.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: September 7, 1999
    Assignee: Taiyo Ink Manufacturing Co., Ltd.
    Inventors: Shigeru Komori, Kazuo Suda, Masao Arima, Miyako Juni
  • Patent number: 5945462
    Abstract: The present invention relates to an aqueous-based coating composition for forming strippable, protective coating for protecting surfaces, such as glass, metal, ceramic, plastic or other materials of construction. More specifically, the compositions and coatings formed therefrom of this invention are particularly useful in connection with protecting precision surfaces, such as optical lenses, including but not limited to ophthalmic lenses, telescopic lenses, microscopic lenses, and the like, which protection is desirably only of a temporary nature.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: August 31, 1999
    Assignee: Loctite Corporation
    Inventor: Peter A. Salamon
  • Patent number: 5942555
    Abstract: A photoactivatable reagent useful as a chain transfer reagent for providing a semitelechelic polymer having one or more terminal photoactivatable groups. The reagent provides one or more photoactivatable groups and one or more sulfhydryl (or other chain transfer) groups, the photoactivatable and chain transfer groups optionally being joined together by a spacer group. The reagent can be used to prepare a polymer by serving to initiate the polymerization of ethylenically unsaturated monomers. The reagent itself becomes an integral part of the resultant polymer, thereby providing the polymer with a terminal photoactivatable nature. The method provides a number of benefits, including the ability to provide homogeneous photoactivatable polymer compositions, e.g., in terms of the uniform location of the photogroup(s) on the terminal portion of each polymer molecule and the ability to build a desired nonpolar quality, and in turn improved surfactancy, into otherwise polar polymers.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: August 24, 1999
    Assignee: SurModics, Inc.
    Inventors: Melvin J. Swanson, Richard A. Amos, Dale G. Swan, Gary W. Opperman
  • Patent number: 5908873
    Abstract: A one-part, cured, radiation-curable liquid matrix composition for affixing coated and inked optical fibers in a ribbon configuration which is peelable from the coated and inked fibers without damage to the integrity of itself or the fibers is disclosed. The composition comprises an aliphatic urethane acrylate oligomer; a reactive monomer having one or more acrylate or methacrylate moieties; a release agent; and an optional photoinitiator. Also disclosed are an optical fiber ribbon array prepared therefrom; a process for removing such matrix composition from inked and coated fibers; a process for preparing such ribbon array; and a radiation-curable coating composition generally applicable for coating a substrate.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: June 1, 1999
    Assignee: Borden Chemicals, Inc.
    Inventor: Paul J. Shustack
  • Patent number: 5858545
    Abstract: Free-radically polymerizable release coating compositions containing conductivity enhancers, which are capable of being electrosprayed onto a substrate. The compositions comprise (a) about 100 parts by weight of one or more free-radically polymerizable vinyl monomer(s), (b) from about 0.05 to about 250 parts by weight of one or more polydiorganosiloxane polymer(s) copolymerizable with the vinyl monomer(s), and (c) from about 0.10 to about 10 parts by weight, based on 100 parts by weight of (a) and (b), of one or more non-volatile conductivity enhancer(s), which are soluble in the monomer(s) and which do not interfere with polymerization, wherein the composition may be electrosprayed.The composition may further comprise from about 0.1 to about 5 parts by weight of one or more initiator(s) based on 100 parts by weight of monomer(s) and polydiorganosiloxane polymer(s).Another embodiment of the present invention further comprises at least 0.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: January 12, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Albert I. Everaerts, Mieczyslaw H. Mazurek, Albert E. Seaver
  • Patent number: 5855837
    Abstract: A novel method for producing thick composite parts based upon photopolymerizable compositions is disclosed. The constituents of the photopolymerizable mixture comprise a monomer or monomers capable of polymerizing by free radical or cationic mechanisms, and a photoinitiator system which possesses an absorbance characteristic which is effectively reduced, or self-eliminating, upon initiation of the polymerization reaction. Parts having thicknesses up to 2 cm and thicker for varying end use applications are made by photopolymerizing such compositions. In addition, using such compositions composite parts can be made using a reinforcement material such as a glass fiber mat present in an amount by weight of from about 5 to about 70%.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 5, 1999
    Assignee: Michigan State University
    Inventors: Alec B. Scranton, Bharath Rangarajan, Lindsay S. Coons
  • Patent number: 5844017
    Abstract: The present invention describes a prepolymer of aliphatic polyoxaesters containing amines and/or amido groups having polymerizable end groups that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: December 1, 1998
    Assignee: Ethicon, Inc.
    Inventors: Dennis D. Jamiolkowski, Rao S. Bezwada
  • Patent number: 5837746
    Abstract: Compounds of the formulaRG--A--INwherein IN is a photoinitiator basic structure A is a spacer group and RG is a functional reactive group can be employed as coreactive photoinitiators for photo-polymerization of systems containing ethylenically unsaturated compounds.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: November 17, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Manfred Kohler, Jorg Ohngemach, Eike Poetsch, Rudolf Eidenschink, Gerhard Greber, Dieter Dorsch, Jurgen Gehlhaus, Konrad Dorfner, Hans Ludwig Hirsch
  • Patent number: 5811199
    Abstract: A method of generating reactive species which includes exposing a photoreactor composition to radiation, in which the photoreactor composition comprises a wavelength-specific sensitizer associated with a reactive species-generating photoinitiator. Also described are methods of polymerizing unsaturated monomers and curing an unsaturated oligomer/monomer mixture.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 22, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: John Gavin MacDonald, Ronald Sinclair Nohr
  • Patent number: 5763503
    Abstract: The disclosed method for making hollow shells (e.g. housing for in-ear hearing aids) employs a radiation-curable polymer comprising (a) a major amount of urethane methacrylate monomer (molecular weight 360-950) having a viscosity less than about 15,000 cps at 25.degree. C., (b) a viscosity-adjusting minor amount of unreacted hydroxyalkyl-methacrylate monomer, (c) a photoinitiating amount of a photoinitiator of the formula Ar.sup.1 --CO--C(OR).sub.2 --R', where Ar.sup.1 is aryl (e.g. phenyl), R is C.sub.1 -C.sub.4 -alkyl (e.g. methyl), and R' is hydrogen or alkyl or, preferably, aryl, and, optionally, (d) a coloring agent, e.g. a pigment concentrate. Viscosity control is of major importance; so the curable composition is generally solvent-free and free of viscosity-modifying solids (other than coloring agents). Acrylates (as distinct from methacrylates) are also omitted. The fully-formulated, curable composition is easily pourable and has a viscosity of less than about 2,000 cps.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: June 9, 1998
    Assignee: Esschem, Inc.
    Inventors: George F. Cowperthwaite, Gary R. Shaw, Susan C. Sheariss
  • Patent number: 5747550
    Abstract: A method of generating reactive species which includes exposing a photoreactor composition to radiation, in which the photoreactor composition comprises a wavelength-specific sensitizer associated with a reactive species-generating photoinitiator. Also described are methods of polymerizing unsaturated monomers and curing an unsaturated oligomer/monomer mixture.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 5, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ronald Sinclair Nohr, John Gavin MacDonald
  • Patent number: 5744514
    Abstract: Coated optical fibers with radiation-curable coatings which include mercaptofunctional oligomers are disclosed. Specifically, the coatings may comprise the cured reaction products of mercapto-terminated urethane oligomers of number average molecular weight as determined by gel permeation chromatography (GPC) of at least about 3,000 daltons, particularly in combination with one or more (meth)acrylate-terminated urethane oligomers; monomer diluents; and optional silane adhesion promoter, photoinitiator and stabilizers. The coatings, when cured, exhibit a percent extractables content, as obtained by Soxhlet extraction, of no more than about 15%, and preferably of no more than about 8%, and a volatiles content, as obtained by thermogravimetric analysis, of less than about 7%, and preferably less than about 3%. Processes for preparing such coated optical fibers and the coatings per se are also disclosed.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: April 28, 1998
    Assignee: Borden Chemical, Inc.
    Inventor: Paul J. Shustack
  • Patent number: 5744512
    Abstract: Compounds of the formulaRG--A--INwhereinIN is a photoinitiator basic structureA is a spacer group andRG is a functional reactive group can be employed as coreactive photoinitiators for photopolymerization of systems containing ethylenically unsaturated compounds.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: April 28, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Manfred Kohler, Jorg Ohngemach, Eike Poetsch, Rudolf Eidenschink, Gerhard Greber, Dieter Dorsch, Jurgen Gehlhaus, Konrad Dorfner, Hans Ludwig Hirsch
  • Patent number: 5736589
    Abstract: Absorbable polymers and blends of acrylated poly(alkylene diglycolate)s and aliphatic polyesters based on lactone monomers such as lactide, glycolide, e-caprolactone, p-dioxanone, and trimethylene carbonate are described. The polymers and blends exhibit a broad range of properties, useful in a variety of medical devices.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: April 7, 1998
    Assignee: Ethicon, Inc.
    Inventors: Kevin Cooper, Angelo Scopelianos
  • Patent number: 5728749
    Abstract: This photopolymerizable composition includes an grafted reactive telomer containing trifluoroethyl methacrylate units, a reactive diluent and a photopolymerization initiator. It gives hydrophobic transparent coatings.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: March 17, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Didier Vanhoye, Elsa Ballot, Robert Legros, Olivier Loubet, Bernard Boutevin, Bruno Ameduri
  • Patent number: 5708047
    Abstract: A method for decorating a substrate with hot stamping foil comprising the steps of:a) applying an ink composition comprised of a cationically radiation cured cycloaliphatic epoxide to the substrate in a predetermined design, said ink being operable when cured to bond to the substrate,b) curing the ink on the substrate by exposing to the radiation by which it is curable, thereby bonding the ink composition to the substrate,c) pressing a sheet of hot stamping foil against the substrate with a die heated to a temperature sufficient to cause a portion of the hot stamping foil to adhere to the heated, cured ink design but not to the ink-free areas of the substrate, andd) removing the die, thereby leaving behind a portion of the foil adhered to the ink design.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: January 13, 1998
    Assignee: Revlon Consumer Products Corporation
    Inventors: Melvin Edwin Kamen, Bhupendra Patel
  • Patent number: 5698371
    Abstract: A photocurable composition useful in preparing water-developable, solid printing plates is prepared by blending a urethane (meth)acrylate prepolymer with a complexing polymer based on poly(vinyl pyrrolidone) composition. The resulting composition is suitably formulated with additional photoactive (meth)acrylate monomers or oligomers and photoinitiator for casting or extrusion on a substrate to form a flexographic printing plate. Following UV exposure of the plate through a negative, unexposed areas can be removed by washing with aqueous media, to give a plate with a desirable relief image. The use of the aqueous washout solution as opposed to organic solvents minimizes pollution problems. The use of the complexing polymer significantly reduces the cold flow of the uncured plate and both increases toughness and reduces tack of the cured plate.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: December 16, 1997
    Assignee: PT Sub, Inc.
    Inventors: Srinivas K. Mirle, Truc-Chi T. Huynh-Tran
  • Patent number: 5696178
    Abstract: Absorbable polymers and blends of acrylated poly(alkylene diglycolate)s and aliphatic polyesters based on lactone monomers such as lactide, glycolide, e-caprolactone, p-dioxanone, and trimethylene carbonate are described. The polymers and blends exhibit a broad range of properties, useful in a variety of medical devices.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: December 9, 1997
    Assignee: Ethicon, Inc.
    Inventors: Kevin Cooper, Angelo Scopelianos
  • Patent number: 5663269
    Abstract: The present invention relates to a process for preparing an alkoxy silyl-terminated material, which has at least two alkoxy groups on both terminal ends, said process comprising reacting in the presence of a catalytically effective amount of an organo-lithium reagent an alkoxysilyl-terminated first reactant with a second reactant having both ends of its chain terminating in a silanol. The alkoxy silyl-terminated material may have a variety of polymer backbone types such as silicone, polyurethane, polyamide and the like. These materials are intended to cure by either moisture or photo cure or by dual moisture and photo cure mechanisms. The alkoxy silyl-terminated material is preferably an organopoly-siloxane having at least two alkoxy groups at both terminal ends.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 2, 1997
    Assignee: Loctite Corporation
    Inventors: Hsien-Kun Chu, Robert P. Cross, Patrick J. Courtney, David I. Crossan
  • Patent number: 5639846
    Abstract: Ultraviolet radiation-curable primary and secondary coating compositions for optical fibers are disclosed. The primary coatings comprise a hydrocarbon polyol-based reactively terminated aliphatic urethane oligomer; a hydrocarbon monomer terminated with at least one end group capable of reacting with the terminus of the oligomer; and an optional photoinitiator. The secondary coatings comprise a polyester and/or polyether-based aliphatic urethane reactively terminated oligomer; a hydrocarbonaceous viscosity-adjusting component capable of reacting with the reactive terminus of (I); and an optional photoinitiator. Also disclosed are optical fibers coated with the secondary coating alone or with the primary and secondary coatings of the invention.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: June 17, 1997
    Assignee: Borden, Inc.
    Inventor: Paul J. Shustack
  • Patent number: 5616629
    Abstract: A radiation-curable release composition is disclosed which comprises:(A) an organopolysiloxane represented by the formulaRSi(CH.sub.3).sub.2 --O--(Si(CH.sub.3).sub.2 O).sub.n (Si(CH.sub.3)(R)O).sub.m Si(CH.sub.3).sub.2 R (I)wherein in Formula (I), each R is --R.sup.1 --O(O)C--C(R.sup.2).dbd.CH.sub.2, --R.sup.1 --O--C(R.sup.2).dbd.CH.sub.2 or is derived from an organic molecule containing both ethylenic unsaturation and epoxide functionality; R.sup.1 is a hydrocarbylene group; each R.sup.2 is independently hydrogen or a methyl or ethyl group; m is a number from about 1 to about 15; and n is a number from about 50 to about 300; and(B) an organosiloxane copolymer represented by the formula(R.sub.3 SiO).sub.x (SiO.sub.4/2).sub.y (II)wherein in Formula (II), each R is independently a hydrocarbon group or a group represented by the formula--O(O)C--C(R*).dbd.CH.sub.2wherein R* is hydrogen or a methyl or ethyl group; x is a number from about 0.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: April 1, 1997
    Assignee: Avery Dennison Corporation
    Inventors: Thanh V. Nguyen, John Allen, Qun Yu
  • Patent number: 5610204
    Abstract: A method of improving the polymerization rate and physical properties of a polymerizable methacrylate-containing hydrogel composition by decreasing the time required to achieve the polymerization peak time.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: March 11, 1997
    Assignee: Bausch & Lomb Incorporated
    Inventor: Yu-Chin Lai
  • Patent number: 5587403
    Abstract: Ultraviolet radiation-curable primary coating compositions for optical fibers are disclosed. The primary coatings comprise a polyether polyol-based reactively terminated aliphatic urethane oligomer; one or more diluent monomers terminated with at least one end group capable of reacting with the reactive terminus of the oligomer; an organofunctional silane adhesion promoter; and an optional photoinitiator. Also disclosed are optical fibers coated with the coatings of the invention, and processes for preparing same.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: December 24, 1996
    Assignee: Borden, Inc.
    Inventor: Paul J. Shustack
  • Patent number: 5539012
    Abstract: Resin compositions useful for filament winding applications comprising an epoxy component including at least one polyepoxide resin curable by heat, an olefinicially unsaturated monomer component including at least one polyolefinically unsaturated monomer curable by actinic radiation, a cyanate ester component including at least one cyanate ester compound having at least two cyanate functional groups per molecule, at least one organic peroxide, at least one photoinitiator, and a heat activated curing agent for epoxides. The compositions have a viscosity less than about 2000 centipoise (cps) and are capable of retaining this viscosity for at least about 6 months at about ambient temperature. The resins are capable of being immobilized by actinic radiation exposure and further heat cured without substantial resin drip. One or more organic peroxides are employed, selected from the group of organic peroxides having 10 hour decomposition half-lives at temperatures of from about 50.degree. C. to less than about 104.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: July 23, 1996
    Assignee: Loctite Corporation
    Inventors: Philip T. Klemarczyk, Yoshihisa Okamoto
  • Patent number: 5536758
    Abstract: A formulation for a resilient gasket coating which is curable by ultraviolet radiation without emitting fumes into the surrounding environment. Different portions of the coating are cured by successive exposure to two different wavelengths of ultraviolet radiation during a continuous in-line process. The first wavelength cures an inner portion of the coating and bonds the coating to the substrate. The second wavelength cures a coating surface. The formulation permits ultraviolet curing of thicker pigmented coatings than have been previously known.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: July 16, 1996
    Assignee: Dana Corporation
    Inventor: Brent R. Boldt
  • Patent number: 5532286
    Abstract: A photopolymerizable composition comprising a crosslinking agent, a UV sensitive photopolymerization initiator and a thioether compound having a vinyl ester or vinyl amide component; wherein the crosslinking agent and the thioether may be the same compound.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: July 2, 1996
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth G. Burns, Susan A. Visser, Jeffrey F. Taylor
  • Patent number: 5532112
    Abstract: Compounds of the formulaRG--A--INwhereinIN is a photoinitiator basic structureA is a spacer group andRG is a functional reactive groupcan be employed as coreactive photoinitiators for photopolymerization of systems containing ethylenically unsaturated compounds.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: July 2, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Manfred Kohler, Jorg Ohngemach, Eike Poetsch, Rudolf Eidenschink, Gerhard Greber, Dieter Dorsch, Jurgen Gehlhaus, Konrad Dorfner, Hans L. Hirsch
  • Patent number: 5527835
    Abstract: Ultraviolet radiation-curable primary coating compositions for optical fibers are disclosed. The primary coatings comprise a polyether polyol-based reactively terminated aliphatic urethane oligomer; one or more diluent monomers terminated with at least one end group capable of reacting with the reactive terminus of the oligomer; an organofunctional silane adhesion promoter; and an optional photoinitiator. Also disclosed are optical fibers coated with the coatings of the invention, and processes for preparing same.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: June 18, 1996
    Assignee: Borden, Inc.
    Inventor: Paul J. Shustack
  • Patent number: 5516509
    Abstract: A clear, photocurable coating composition to be applied over wet nail polish on a nail for binding with the wet nail polish upon exposure to ultraviolet light, consisting of: between 5% and 50% by weight of a film-forming polymer selected from the group consisting of:i) cellulose estersii) acrylic polymers,between 2% and 15% by weight of a photoinitiator selected from the group consisting of:i) benzophenoneii) alkylphenyl ketone, andiii) cyclohexylphenyl ketone;and between 40% and 85% by weight of a photoreactive monomer selected from the group consisting of methacrylic acid esters.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: May 14, 1996
    Assignee: International Beauty Design, Inc.
    Inventors: Debra Marr-Leisy, Naranbhai N. Patel
  • Patent number: 5516812
    Abstract: A radiation and moisture curable silicone conformal coating composition comprises a silicone fluid of a monovalent ethylenically unsaturated functional group endcapped silicone and at least one (meth)acryl-functionalized silicone; and a photoinitiator effective for radiation curing of the silicone composition. The encapped silicone is the product of a reaction between a silanol terminated silicone and a silane cross linker having joined directly to a silicon atom thereof a monovalent ethylenically unsaturated functional group and at least 2 hydrolyzable groups.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: May 14, 1996
    Assignee: Loctite Corporation
    Inventors: Hsien K. Chu, Robert P. Cross, Lester D. Bennington
  • Patent number: 5510539
    Abstract: Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 23, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Godwin Berner, Franciszek Sitek, Rinaldo Husler
  • Patent number: 5498642
    Abstract: A radiation surface-curable RTV silicone composition which subsequent to radiation surface curing thereof, is interiorly moisture-curable in character. Such radiation surface-curable, interiorly moisture-curable RTV silicone composition comprises: a silanol-containing silicone; a silane cross-linker for the silicone, such cross-linker having joined directly to a silicon atom thereof an ethylenically unsaturated functional group and at least two hydrolyzable functional groups; and a photoinitiator effective for radiation surface curing of the silicone composition. Also disclosed is a "liquid potting system" formulation, which is irradiated subsequent to dispensing thereof at the potting locus, so that the radiation surface-cured skin layer overlies and contains (cooperatively with the associated bounding surface(s) of the potting locus) the uncured liquid, so that the potted structure or material is encapsulated in a liquid (damping) medium.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: March 12, 1996
    Assignee: Loctite Corporation
    Inventors: Hsien-Kun Chu, Robert P. Cross
  • Patent number: 5456905
    Abstract: A photo-reactive nail polish coating composition that cures quickly upon exposure to natural light. The coating consists of a polymer formed from a composition comprising nitrocellulose, a photo-reactive monomer, a photoinitiator and a reaction inhibitor, resulting in a product compatible with commercially available nail polish of any color and removable by standard acetone-based polish removers. It is also compatible with every-day chores because it is insoluble in water. The composition is not phototoxic and has very low potential for skin irritation or sensitization. The photo-reactive coating is applied over the wet nail polish and then exposed to light, causing the nail polish to dry in a few minutes.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: October 10, 1995
    Assignee: Ultraset Limited Partnership
    Inventor: Vivian B. Valenty
  • Patent number: 5451616
    Abstract: A liquid composition which on exposure to actinic radiation polymerizes to form a heat-curable solid film adhesive, said composition comprising (A) a heat-curable phenol-aldehyde resol resin, (B) a photopolymerizable polyurethane or polyester having, on average, more than one polymerizable acrylic group per molecule, or a mixture of said polyurethane and said polyester, (C) a photopolymerization initiator for (B) and (D) a polyvinylacetal.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: September 19, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Margaret R. Haddon, Terence J. Smith, Stuart Mansfield
  • Patent number: 5435994
    Abstract: A photo-reactive nail polish coating composition that cures quickly upon exposure to low levels of ultraviolet radiation. The coating consists of a polymer formed from a composition comprising nitrocellulose, a photo-reactive monomer, a photoinitiator and a reaction inhibitor, resulting in a product compatible with commercially available nail polish of any color and removable by standard acetone-based polish removers. It is also compatible with every-day chores because it is insoluble in water. The composition is not phototoxic and has very low potential for skin irritation or sensitization. The photo-reactive coating is applied over the wet nail polish and then irradiated with safe dosages of ultraviolet radiation, causing the nail polish to dry in a few minutes.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: July 25, 1995
    Assignee: Ultraset Limited Partnership
    Inventor: Vivian B. Valenty