Patents Examined by Robert E. L. Sellers
  • Epoxy resin rendered flame retardant by reaction with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide
    Patent number: 6291627
    Abstract: A flame-retardant epoxy resin was prepared by reacting an active-hydrogen-containing phosphorus compound with a di- or poly-functional epoxy resin via an addition reaction between the active hydrogen and the epoxide group, is suitable for printed circuit board and semiconductor encapsulation applications.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: September 18, 2001
    Assignee: National Science Council
    Inventors: Chun-Shan Wang, Ching Hsuan Lin
  • Phosphorus-containing dihydric phenol or naphthol-advanced epoxy resin or cured
    Patent number: 6291626
    Abstract: Flame-retardant advanced epoxy resins and cured epoxy resins contain a rigid phosphorus group emanating from a dihydric phenol or naphthol which provides thermal and flame retardant properties. The advanced epoxy resins are suitable for making a fiber-reinforced epoxy resin composite which is useful in the fabrication of printed circuit boards. The cured epoxy resins can be used in semiconductor encapsulation applications.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: September 18, 2001
    Assignee: National Science Council
    Inventors: Chun-Shan Wang, Jeng-Yueh Shieh
  • Butadiene rubber particles with secondary particle sizes for epoxy resin encapsulant
    Patent number: 6288169
    Abstract: An epoxy resin composition for semiconductor encapsulation comprising (A) an epoxy resin, (B) a phenolic resin, and (C) butadiene rubber particles having an average particle size of secondary particles of 100 &mgr;m or smaller and having such a size distribution that the proportion of secondary particles having a particle size of 250 &mgr;m or smaller is 97% by weight or more, and the proportion of secondary particles having a particle size of 150 &mgr;m or smaller is 80% by weight or more. Component (C) is uniformly dispersed in the composition without forming coarse agglomerates to secure low stress properties.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: September 11, 2001
    Assignee: Nitto Denko Corporation
    Inventors: Hideyuki Usui, Satoshi Okuda, Minoru Nakao
  • Treatment of acne, seborrheic dermatitis and other skin diseases with salt solution containing NACL
    Patent number: 6287548
    Abstract: The present invention provides a composition of matter which has been demonstrated to be a very effective treatment for acne, seborrheic dermatitis and related skin diseases when applied to and contacted with affected skin areas, while avoiding the disadvantages and complications attendant to more established treatments. The composition comprises a synthetic mixture of salts which, when dissolved in a solvent such as water, is ionically composed primarily of a mixture of sodium and magnesium cations and chloride and sulfate anions, and which is preferably free of added zinc. More specifically, the salt mixture according to the present invention comprises the following range of composition in grams/kilogram of salt mixture in the ionic state, the balance being water of hydration: I.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: September 11, 2001
    Assignee: Bio.Life International AG
    Inventor: Hans F. Biener
  • Removable adhesive of polyepoxide, curing agent and microspheres
    Patent number: 6288170
    Abstract: A thermosetting adhesive comprising a polyepoxide resin, a curing agent such as an imidazole and polymeric or elastomeric microspheres is removable when heated to a temperature greater than the use temperature of from about room temperature to about 185° C.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: September 11, 2001
    Assignee: 3M Innovative Properties Company
    Inventor: Robert D. Waid
  • Filler/silicone oil masterbatch with treating agent for RTV polysiloxanes
    Patent number: 6288143
    Abstract: A method for preparing the first component of a two-component room temperature-vulcanizable (RTV) silicone composition comprises (a) preparing a filler/oil masterbatch by (i) adding an unreactive silicone oil and untreated, aggregated filler particles to a mixer; (ii) adding a filler treating agent such as an organosilane, a polyorganosilane or a silazane to the unreactive silicone oil/filler mixture; and (iii) mixing the unreactive silicone oil/filler mixture and treating agent under conditions sufficient to breakdown the aggregated filler particles to an average size of less than about 300 nm for a time of less than about 24 hours to form the filler/oil masterbatch; and (b) adding said filler/oil masterbatch to a reactive silicone oil.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: September 11, 2001
    Assignee: General Electric Company
    Inventors: Paul J. Caradori, Robert Augustine Smith, Michael Allen Zumbrum
  • Copolymer of monocarboxylic acid with at least 8C and unsaturated dicarboxylic ester
    Patent number: 6284855
    Abstract: A copolymer having utility in coating compositions comprises the addition polymerization product of an alpha-olefin monocarboxylic acid having at least 8 carbon atoms (articularly undecylenic acid) and a mono- or di-ester of an unsaturated dicarboxylic acid or anhydride (e.g., dialkyl maleate). The copolymer may be provided with hydroxy functionality by reacting the carboxylic acid functionality with an epoxy compound to permit use in curable coatings. Alternatively the copolymer may be base neutralized to serve as a surfactant in aqueous dispersion polymerization.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: September 4, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Karl F. Schimmel, Suryya K. Das, Soner Kilic
  • Paper or board treating composition of carboxylated surface size, polyacrylamide and crosslinker
    Patent number: 6281291
    Abstract: A composition useful in paper and board making comprises a carboxylated surface size containing at least 40 mole percent of hydrophobic groups and at least about 25 mole percent of carboxylated groups such as styrene-(meth)acrylic aicd copolymers or styrene-maleic acid (anhydride or salt) copolymers, a hydrophilic polyacrylamide and a crosslinking agent such as glyoxylated vinylamide polymers, formaldehyde, melamine-formaldehyde condensates and glyoxyl-extended materials.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: August 28, 2001
    Assignee: Bayer Corporation
    Inventors: Rajiv Bazaj, Gerald Guerro, David Dauplaise
  • Epoxy resin composition containing unsaturated monomer, curing agent, photoinitiator and epoxy (meth) acrylate
    Patent number: 6277930
    Abstract: The present invention relates to an epoxy resin composition used for cap seal of a hard disc drive spindle motor, which hardly causes outgassing even when using in a hard disc for high-speed rotation and has high reliability. The composition comprises an epoxy resin having at least one glycidyl group in a molecule as a component (A), a monomer having at least one unsaturated bond group in a molecule (polyfunctional vinyl monomer or monofunctional vinyl monomer) as a component (B), an epoxy resin curing agent as a component (C), a photopolymerization initiator as a component (D), and a partially-esterified unsaturated epoxy resin wherein 10-90% of an epoxy equivalent of a bisphenol type epoxy resin is (meth)acrylated as a component (E).
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: August 21, 2001
    Assignee: Loctite Corporation
    Inventor: Katsue Nishikawa
  • Sound damping coating of flexible and rigid epoxy resins
    Patent number: 6277903
    Abstract: The invention is a sprayable coating having noise vibration and harshness reduction or absorption properties. Such composition comprises from about 10 to about 60 percent of the flexible epoxy resin, from about 5 to about 40 percent by weight of a rigid epoxy resin formulation, and a curing agent for the epoxy moieties of the two resins. In another embodiment, the invention is a method of coating a substrate to reduce the impact of noise vibration and harshness on the substrate or users of the substrate, which process comprises spraying the above defined composition on to a substrate and curing the resin on such substrate. In yet another embodiment the invention is a coated substrate described herein before having enhanced noise vibration and harshness properties.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: August 21, 2001
    Assignees: The Dow Chemical Company, Essex Specialty Products, Inc.
    Inventors: Daniel P. Sophiea, Dwight K. Hoffman, Xiao Hong, Gloria Hsu
  • Epoxy-functional amidoamine reacted with excess polyamine and monoepoxy as epoxy curative
    Patent number: 6277928
    Abstract: A water-dispersible curing agent for epoxy resins is prepared by the reaction of (a) an epoxy-functional compound obtained from the reaction of at least one epoxy resin and an amidoamine derived from the reaction of an acid-terminated polyalkylene glycol and a diamine in an active amine hydrogen:epoxy groups ratio of from 1:15 to 1:350, (b) at least one polyamine in an active amine hydrogen:epoxy groups ratio of from 2:1 to 30:1 which yields an amine-terminated product having an amine equivalent weight of at least 50, and, optionally, (c) a monoepoxy in a remaining active amine hydrogen:epoxy groups ratio of from 5:1 to 20:1.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: August 21, 2001
    Inventors: Charles J. Stark, by Ann E. Stark, adminstrator, Gayle Edward Back, Jimmy D. Elmore, Kalyan Ghosh, Pen-Chung Wang, Kailash Dangayach
  • Alkylated and/or aralkylated polyhydroxy aromatic compounds and processes for their preparation and use
    Patent number: 6277944
    Abstract: Alkylated and/or aralkylated polyhydroxy aromatic compounds prepared by reaction of a polyhydroxy aromatic compound (A) with an alkylene compound (B) at elevated temperature with the addition of a mixture (C) of oxalic acid and boric acid in a molar ratio of from 1:5 to 1:0, are useful, for example, as starting materials for the preparation of condensation polymers.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: August 21, 2001
    Assignee: Solutia Germany GmbH & Co. KG
    Inventor: Uwe Neumann
  • Epoxy resin system
    Patent number: 6274682
    Abstract: An epoxy resin composition containing a) an epoxy resin and b) a liquid amine terminated polyamide curing agent prepared by condensing an aminoalkylpiperazine and a dicarboxylic acid. The epoxy resin composition typically requires less than 35% of solvent to produce a sprayable viscosity. The cured epoxy composition has good flexibility. A hydroxy-functional flexibilized resin is also produced by reacting (a) an epoxy resin, (b) a liquid aminoalkylpiperazine-based amine terminated polyamide and (c) a hydroxy-functional amine.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: August 14, 2001
    Inventors: Larry Steven Corley, Martin L. Ehrlich
  • Insulation coating for electric cable containing polyolefin and polymer with ester and epoxy groups
    Patent number: 6274239
    Abstract: A polymeric composition for coating electric cables for power transmission at medium/high voltage, having an improved resistance against the formation of the so-called water trees, comprises a polymeric polyolefin base including, in parts by weight to the total weight thereof, from 0.5 to 15 parts of ester groups and from 0.01 to 5 parts of epoxy groups. Electric cables according to the invention comprise at least one electrically conducting core (2) and an insulation coating (5) comprising the aforementioned polymeric composition.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: August 14, 2001
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Franco Peruzzotti, Valeria Garcia
  • Thermosetting compositions containing epoxy functional polymers prepared by atom transfer radical polymerization
    Patent number: 6268433
    Abstract: A thermosetting composition useful as a powder coating comprises a co-reactable solid, particulate mixture of (a) an epoxy functional polymer containing at least one of the polymer chain structures -[(M)p-(G)q]x- or -[(G)q-(M)p]x- wherein M is an oxirane-free residue of at least one ethylenically unsaturated monomer, G is a glycidyl-functional ethylenically unsaturated monomer, p and q each independently has a value of 0 to typically less than 100, and x has a value of at least 1 to typically less than 100, the total value of p, q and x selected such that said epoxy functional polymer has a number average molecular weight of at least 250, and (b) a co-reactant having functional groups reactive with the epoxy groups of (a), e.g., dodecanedioic acid. The epoxy functional polymer is prepared by atom transfer radical polymerization and a polydispersity index of less than 2.5.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: July 31, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Karen A. Barkac, Simion Coca, James R. Franks, Kurt A. Humbert, Paul H. Lamers, Roxalana L. Martin, James B. O'Dwyer, Kurt G. Olson, Daniela White
  • Hair styling shampoos containing low Tg latex polymer particles
    Patent number: 6268431
    Abstract: Disclosed are hair shampoo compositions which provide cleaning and styling performance, which comprise dispersed water insoluble, polymer latex particles, wherein the polymer latex particles have a selected glass transition temperature (Tg) of between about −20° C. and about 10° C. The shampoo compositions will generally contain one or more compatible surfactants, one or more optional materials, and a water or water-containing carrier as an aqueous carrier.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: July 31, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Michael Albert Snyder, James Robert Schwartz
  • Powder coating of carboxyl-containing poly(meth)acrylic resin and trans(cis)-diglycidyl 1,4-cyclohexanedicarboxylate
    Patent number: 6265487
    Abstract: A powder coating hardener based on epoxide compounds having a molecular weight of no more than 1500, which is solid at room temperature, the epoxide compounds consisting of 60 to 100% by weight of diglycidyl 1,4-cyclohexanedicarboxylate in the form of the pure trans-isomer or of a cis/-trans-isomer mixture having a melting point (peak maximum of the DSC scan at a heating rate of 10° per minute) of above 70° C., and of 0 to 40% by weight of other epoxide compounds, and wherein 0 to 15% by weight of the entire amount of epoxide compounds can contain aromatic structural elements in the molecule. The powder coating hardeners give powder coatings based on poly(meth)acrylic resins having free carboxyl groups, which have good flow even at low temperatures.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: July 24, 2001
    Assignee: Vantico, Inc.
    Inventor: Philippe-Guilhaume Gottis
  • Thermosetting compositions containing carboxylic acid functional polymers prepared by atom transfer radical polymerization
    Patent number: 6265489
    Abstract: A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) polycarboxylic acid functional polymer, and (b) epoxide functional crosslinking agent having at least two epoxide groups, e.g., triglycidyl isocyanurate (TGIC), is described. The polycarboxylic acid functional polymer is prepared by atom transfer radical polymerization and has well defined polymer chain architecture and polydispersity index of less than 2.0. The thermosetting compositions of the present invention have utility as powder coatings compositions.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: July 24, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Karen A. Barkac, Simion Coca, James R. Franks, Kurt A. Humbert, Paul H. Lamers, Roxalana L. Martin, James B. O'Dwyer, Kurt G. Olson, Daniela White
  • Diglycidylester of alkylated hexahydrophthalic anhydride
    Patent number: 6265531
    Abstract: A glycidylester of the general formula I in which R1 and R4 are the same or different C1-C6 alkyl or C6-C10 cycloalkyl groups, and R2 and R3 are the same or different and are H or C1-C6 alkyl or C6-C10 cycloalkyl groups. The glycidylester is used in a thermosetting resin composition, comprising also a curing compound and preferably an advanced resin product. The thermosetting resin composition can be applied for outdoor durable coatings, having excellent resistance against acid rain.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: July 24, 2001
    Assignee: Shell Oil Company
    Inventors: Johannes Adrianus Van Doorn, Jozef Jacobus Titus Smits
  • Particles dispersed w/polymer dispersant having liquid soluble and cross-linkable insoluble segments
    Patent number: 6262152
    Abstract: Dispersions containing a liquid vehicle (which can be aqueous, semi-aqueous or non-aqueous), organic or inorganic particles (or mixtures) that are insoluble in the liquid vehicle and a polymeric dispersant, preferably a structured polymeric dispersant, having one or more segments soluble in the liquid vehicle and one or more segments insoluble in the liquid vehicle, have improved stability when the insoluble segment(s) contains cross-linking groups which are cross-linked to itself or a cross-linking compound such as a polyfunctional monomer, oligomer or polymer to form an encapsulation network that entraps the particles which are particularly useful for paints or inks in coating and printing applications.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: July 17, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Michael Fryd, Karyn B. Visscher