Organic Containing Patents (Class 156/326)
  • Patent number: 5641368
    Abstract: A spray-on inorganic (e.g. fiberglass) insulation method and product with a low density and high R-value are disclosed. Loose-fill fiberglass is coated with a non-foaming liquid and thereafter blown or sprayed into a cavity such as a vertically extending open stud-defined wall cavity. After sticking in the cavity, the insulation is rolled to further pack it into the cavity and thereafter allowed to cure.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: June 24, 1997
    Assignee: Guardian Fiberglass, Inc.
    Inventors: Gary E. Romes, Mark H. Vagedes, Joseph T. Church
  • Patent number: 5614049
    Abstract: Process for the stiffening of textile or leather materials, includes (a) applying an aqueous polymer dispersion to a textile structure on the basis of a woven or nonwoven fabric, or a leather material; (b) drying the textile structure or leather material; and (c) the stiffening material thus produced is deformed and glued with the textile and leather material to be stiffened, in which an aqueous dispersion of a two-phase, sealable emulsion graft copolymer having a soft phase and a hard phase is applied. The hard phase has a glass transition temperature of Tg of at least 50.degree. C. and includes monomer units such as methyl methacrylate, styrene, diisopropyl fumarate and vinyl chloride. The soft phase has a glass transition temperature Tg of at least 30.degree. C.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: March 25, 1997
    Assignee: Wacker Chemie GmbH
    Inventors: Klaus Kohlhammer, Gerhard Koegler, Monika Schwemmer
  • Patent number: 5611885
    Abstract: A binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, wherein the binder molecules have at least one functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that may be adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 18, 1997
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5593633
    Abstract: A novel method of forming high strength, fiber reinforced, high temperature thermoplastic panels is provided which entails placing at least one layer of metal mesh or screen adjacent the vacuum probes in a vacuum bagging apparatus. Additionally, caul plates are placed as needed around the thermoplastic workpiece and metal mesh is positioned on the plates to promote uniform vacuum drawing on the entire panel and complete consolidation.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: January 14, 1997
    Inventors: Kenneth M. Dull, Terry L. Schneider
  • Patent number: 5571365
    Abstract: An adhesive for a printed circuit board which consists essentially of a dispersion of a resin which is soluble in an alkaline oxidizing agent after curing in a resin matrix which is sparingly soluble in an alkaline oxidizing agent after curing, and a process for producing a printed circuit board using the above adhesive.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: November 5, 1996
    Assignees: Nec Corporation, Sumitomo Bakelite Corporation Limited
    Inventors: Eiji Maehata, Toshio Komiyatani
  • Patent number: 5552236
    Abstract: According to the invention, the surface of a substrate possessing an active hydrogen group is contacted with a chemical adsorbent containing a radical generation precursor group or metal ion capturing group within a molecule--also possessing a reactive functional group such as halosilyl or alkoxy silyl at its end--to form a chemical adsorption film by removing the unreacted chemical adsorbent, radicals are then generated and magnetism is expressed on the chemical adsorption film.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: September 3, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tadashi Ohtake, Norihisa Mino, Kazufumi Ogawa
  • Patent number: 5543273
    Abstract: Radiation-sensitive photographic plates are prepared by laminating to a rigid transparent plate support a photographic element comprised of a flexible photographic film support having a radiation-sensitive silver halide emulsion layer on one side thereof and a remoistenable adhesive layer on the opposite side thereof. The adhesive layer is non-tacky in the dry state but is reactivated by moistening so as to strongly bond the photographic element to the rigid transparent plate support.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: August 6, 1996
    Assignee: Eastman Kodak Company
    Inventors: Thomas M. Smith, Arlene L. Meyer
  • Patent number: 5509993
    Abstract: A process for the preparation of a laminate of at least one metal layer and at least one layer of flexible graphite includes producing a non-detachable bond between the graphite and the metal without using a mechanical anchoring device and without using a known adhesive. Initially, a contact surface-active agent from the group including organosilicon compounds, perfluorinated compounds and metal soaps is applied in a thin layer to at least one of the surfaces to be bonded. Then the surfaces to be bonded are brought into contact and bonded together by the action of pressure and heat.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: April 23, 1996
    Assignee: Sigri Great Lakes Carbon GmbH
    Inventor: Alfred Hirschvogel
  • Patent number: 5468346
    Abstract: A glass ply having a chemically strengthened surface, for example a chemically etched surface, for use in a laminated glazing is treated by hot melting a thermoplastic material onto such strengthened glass surface prior to incorporation of the glass ply into the required laminate. The thermoplastic material may be polyvinylbutyral but is preferably polyurethane.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: November 21, 1995
    Assignee: Pilkington Aerospace Limited
    Inventors: Robert S. Bruce, Christopher W. G. Hall
  • Patent number: 5458940
    Abstract: A single recording side magneto-optic disk has improved dampening characteristics for rotation at high speeds such as 3,000 rpm or greater. A dampening layer is secured to the recording side. The dampening layer includes a film of at least approximately 102 micrometers in thickness attached to the disk by an adhesive layer of at least 25.4 micrometers in thickness.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: October 17, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Edward J. Woo
  • Patent number: 5443877
    Abstract: A laminate structure comprising a substrate or a core laminate to which a film or film laminate is replaceably adhered.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: August 22, 1995
    Assignee: General Electric Company
    Inventors: John R. Kramer, Larry V. Young
  • Patent number: 5441562
    Abstract: An adhesive based on glues, resins, and an alcohol is provided. The adhesive develops strengths similar to synthetic resin dispersions in the bonding of paper to plastic surfaces and has a high wet adhesive strength. The adhesive is particularly useful in the labelling of plastic surfaces particularly plastics such as polystyrene, polycarbonate, polyvinyl chloride, and polyethylene terephthalate.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: August 15, 1995
    Assignee: Henkel Kommanditgesellschaft aug Aktien
    Inventors: Ludwig Broich, Bernhard Herlfterkamp, Hermann Onusseit
  • Patent number: 5409648
    Abstract: A process is disclosed for producing multiple-layer moulded bodies by injection of a laminate (16) composed of an essentially flexible, foil-like surface material (19) such as leather or textiles, and a foam layer (22) laminated on the back side of the surface material. Before the laminate is introduced in the injection mould, a separating layer (17) is applied on the surface of the foam material. The separating layer is composed of a separating agent that contains a mixture of an aqueous rubber dispersion and a aqueous silicone emulsion.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: April 25, 1995
    Assignee: Metraplast H. Jung GmbH
    Inventor: Jurgen Reidel
  • Patent number: 5371619
    Abstract: A method for bonding together liquid crystal cells using a transparent grease. The grease maintains a level of viscosity appropriate for physically bonding the cells while matching the indices of refraction of the cells or cell layers for proper optical coupling.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: December 6, 1994
    Assignee: Apple Computer, Inc.
    Inventors: Eric R. Sirkin, Joseph J. Curry
  • Patent number: 5275680
    Abstract: A method for bonding together liquid crystal cells using a transparent grease. The grease maintains a level of viscosity appropriate for physically bonding the cells while matching the indices of refraction of the cells or cell layers for proper optical coupling.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: January 4, 1994
    Assignee: Apple Computer, Inc.
    Inventors: Eric R. Sirkin, Joseph J. Curry
  • Patent number: 5238518
    Abstract: Disclosed is an inorganic adhesive composition comprising (a) an aqueous silica sol and (b) an inorganic refractory powder along with one or more material selected from (c) a fine powdery silica, (d) an aqueous alkali silicate solution and (e) a silane coupling agent. After hardening, the hardened product of the composition displays noticeably improved adhesion strength and electric insulating property.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: August 24, 1993
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Ken-ichi Okubi, Akita Kitajima, Hisayuki Sato, Kiyomi Ema
  • Patent number: 5237049
    Abstract: A process for purifying fluoropolymers by contacting them at temperatures above 140.degree. C. with a liquid perfluorinated cycloalkane. The resulting polymers are particularly useful where polymers with reduced impurities are desirable, such as in medical devices and in parts for the semiconductor manufacturing industry. The liquid perfluorinated cycloalkanes improve the adhesion of fluoropolymer to themselves and other materials.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: August 17, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert J. Cavanaugh, William H. Tuminello
  • Patent number: 5204176
    Abstract: A structural siding composition for use in the building industry comprising (a) siding layer prepared from an impregnated cellulosic material with an amount of essentially uncatalyzed polyisocyanate from about 8 to 20 percent by weight of polyisocyanate to cellulosic material, which has been heated at a temperature from about 105.degree. to about 245.degree. C. (221.degree. to 473.degree. F.) for a time not exceeding about 5 minutes and at a pressure from about 2700 to about 8300 kPa (390 to 1200 psi) sufficiently to cure the polyisocyanate, and (b) an insulating layer. In one embodiment, the composition further comprises an inner sheathing layer. A method of preparing the composition is also described. The composition provides a relatively high strength pre-fabricated exterior siding panel that can be attached to a frame building construction, contributing structural integrity and saving time and risks associated with traditional building methods requiring more steps.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: April 20, 1993
    Assignee: The Dow Chemical Company
    Inventors: Randolph H. Seiss, Robert J. Cleereman
  • Patent number: 5187014
    Abstract: This invention discloses a method of manufacturing a product of one-piece construction wherein silicone rubber has been made to adhere, characterized in that a substrate is immersed in a primer comprising:(A) A silicon compound containing at least 1 organic group with an aliphatic unsaturated bond and at least 1 hydrolyzable group bonded to a silicon atom,(B) A silicon compound containing at least 1 organic group with an epoxy group, and at least 1 hydrolyzable group bonded to a silicon atom,(C) Platinum or a platinum compound,(D) An organic solvent,and after drying, the substrate and silicone rubber are heated together with pressure contact.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: February 16, 1993
    Assignee: Shin-Etsu Chemical Company, Limited
    Inventors: Akio Suzuki, Masaaki Matsumura, Takeshi Hashimoto
  • Patent number: 5179141
    Abstract: A latex adhesive made from a polymer such as a ethylene/vinyl acetate or styrene/butadiene copolymer, a low-boiling alcohol, such as isopropanol, a non-crystallizing polyhydric alcohol such as sorbitol, and preferably a cellulose thickener. The latex adhesive dries so quickly that an adhesively edge-padded stack of paper sheets formed using the adhesive can be cut by hand into tablets within about 30 minutes. These tablets do not leave an upstanding ridge of adhesive when a number of the sheets are torn off.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: January 12, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Clair J. Emery, Kenneth J. Perrington
  • Patent number: 5162137
    Abstract: A method is provided for applying a polystyrene label to a surface of a polystyrenic article. The process comprises applying a thin film of a terpenoid compound to the polystyrene, the terpenoid compound having a boiling point between 150.degree. C. and 260.degree. C.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: November 10, 1992
    Assignee: FMC Corporation
    Inventor: Douglas G. Placek
  • Patent number: 5154791
    Abstract: A method for bonding or potting substrates by means of cationically polymerizable masses being activated before joining or potting by irradiation with visible light and curing after joining or potting of the substrates without the irradiation being continued is described as well as an apparatus for executing this method. By irradiation with light having a wavelength of from 400 to 600 nm for photo-activation of said masses, a prolonged pot life of said masses without reducing their wetting ability during pot life is obtained such that the masses are unlimitedly applicable for more than 30, preferably more than 100 sec. after exposure is finished. The apparatus according to the invention comprises a source of irradiation which exclusively emits light having a wavelength of >400 nm.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: October 13, 1992
    Assignee: Thera Patent GmbH & Co. KG Gesellschaft fur industrielle
    Inventors: Oswald Gasser, Erich Wanek, Klaus Ellrich, Rainer Guggenberger
  • Patent number: 5135598
    Abstract: A primed polymeric article is provided. The article comprises a polymeric substrate having graft polymerized thereon at least one organic nucleophilic graft-polymerizable monomer or salt thereof which is capable of accelerating the cure of a cyanoacrylate adhesive. The invention also provides an article wherein the primed polymeric article is adhered to a substrate with a cyanoacrylate adhesive and a method for adhering a polymeric first substrate to a second substrate with a cyanoacrylate adhesive.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: August 4, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James J. Kobe, John T. Simpson, Kimberly K. Harmon, Charles D. Wright
  • Patent number: 5135600
    Abstract: A method for making a medical instrument from vinyl chloride resin. The method comprises forming two vinyl chloride members and adhering the vinyl chloride resin members together. The adhering of the vinyl chloride members together comprises applying to one or both surfaces of portions of the vinyl chloride resin members to be adhered together a liquid lubricant, which is compatible with vinyl chloride resin and which dissolves vinyl chloride resins and then joining the portions to be adhered together in close adhesion with each other. This method produces vinyl chloride resin medical instruments in a safer fashion than those produced by using an organic solvent.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: August 4, 1992
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Noboru Ishida
  • Patent number: 5112428
    Abstract: Apparatus for wet laminating a photopolymerizable film onto circuit board panels or other substrates. The apparatus is easily and quickly convertible from dry laminating to wet laminating with the rollers therefor mounted in bearing blocks which are insertable in slots in brackets at each end and removable therefrom. The lower roller thereof has a gear the teeth of which are meshable with the teeth of an idler gear for transmission of rotation power thereto. Elongate tubes for applying a fluid, which comprises between about 0.1 and about 10 wt. % of a heterocyclic metal-chelating agent, to the wet insertion rollers for application thereof to the panels are contained in a yoke which is adjustable next to wet insertion rollers for wet laminating or away from dry insertion rollers for dry laminating.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: May 12, 1992
    Assignee: Morton International, Inc.
    Inventors: Jose L. Correa, Robert C. Stumpf, Charles L. Farnum, Leo Roos
  • Patent number: 5110384
    Abstract: A process for making an electrically conductive pattern on a substrate including forming a patterned adhesive layer on the substrate, applying a conductive metal powder to the adhesive layer, and in a second coating pass, applying a powder containing supplementary elements to the pattern. The patterned substrate is fired to volatilize theadhesive layer and sinter the powders. This process can be used to make printed circuits on ceramic substrates which are useful in hybrid circuits, for example.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: May 5, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Dietmar Dudek, Thomas Pfeiffer
  • Patent number: 5098502
    Abstract: The present invention is concerned with a writing and drawing surface composed of a printed background color or design, a plastic adhesive media, an overlay film, an adhesive for affixing the perimeter of the film to the carton, and a lift tab pattern which allows the overlay film to be released from the packaging surface. The technique for manufacturing consists of applying the background color and film overlay adhesive to the packaging material concurrently with the desired graphics follows by the application of the plastic adhesive and overlay film.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: March 24, 1992
    Assignee: Kraft General Foods, Inc.
    Inventor: Charles A. Smolinski
  • Patent number: 5064495
    Abstract: There is provided an adhesive comprising (a) a compound having at least one mercapto group or polysulfide group joined to a saturated carbon atom and at least one olefinic double bond and (b) a solvent which does not copolymerize with said compound or a liquid polymerizable monomer which copolymerizes with said compound.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: November 12, 1991
    Assignee: Kuraray Company, Limited
    Inventors: Ikuo Omura, Junichi Yamauchi, Mitsunobu Kawashima
  • Patent number: 5055503
    Abstract: A water resistant, starch-based alkaline corrugating adhesive which includes a polysaccharide graft copolymer containing a reactive aminoethyl halide group.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: October 8, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Craig H. Leake, John J. Tsai, Eric A. Meier
  • Patent number: 5045143
    Abstract: Metal-fluoroelastomer composites constituted by a metal part and by a cured fluoroelastomer part bonded to each other with high adhesion strength, wherein the fluoroelastomeric part is constituted by a copolymer containing from 35 to 80 mol % T of vinylidene fluoride, from 15 to 35 mol % of hexafluoropropene, from 0 to 30 mol % of another comonomer selected from fluoro-olefins and/or perfluorovinyl ethers, and from 0.001 to 2 wt. % of bromine.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: September 3, 1991
    Assignee: Ausimont S.p.A.
    Inventors: Vincenzo Arcella, Raffaele Ferro, Giulio Tommasi
  • Patent number: 5039370
    Abstract: A mixture of benzyl alcohol and a hydroxy benzene is disclosed, for use in the bonding together of polyamide articles. In one embodiment, the mixture comprises 5 to 50% by weight of benzyl alcohol, 20 to 90% by weight of phenol; and 5 to 30% by weight of polyamide. In another embodiment, the mixture comprises 20 to 60% by weight of a benzyl alcohol, 20 to 60% by weight of ortho-dihydroxy benzene and 20 to 60% by weight of a lower alcohol having one to four carbon atoms. The mixture may be applied to a polyamide article, which may then be contacted with a second polyamide article and heated to effect bonding. In another embodiment, a pattern of the mixture may be applied, for instance on a polyamide film, the pattern corresponding to the bonds required in the polyamide article being manufactured. For example, the composition may be used to bond film or sheet together so as to form fluid flow passages therebetween e.g. as in a heat exchanger.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: August 13, 1991
    Inventor: Anthony J. Cesaroni
  • Patent number: 5037700
    Abstract: Flexible laminates are prepared using a room temperature curable, water-borne laminating adhesive. The adhesive consists essentially of a copolymer emulsion of an alkyl acrylate, alkyl methacrylate, styrene or vinyl ester, or mixtures thereof, and an ethylenically unsaturated carboxylic acid, and optional selected comonomers, combined with an epoxy resin emulsion and a polyfunctional amine. The flexible laminates are characterized by rapid room temperature curing, high bond strength, superior heat resistance and chemical and water resistance.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: August 6, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventor: Irwin J. Davis
  • Patent number: 5018267
    Abstract: Method for forming a laminate and a product formed therefrom. A thin layer of oil is applied to a facing surface of at least one of a plurality of adjacent sheets and a wax is applied along the longitudinal edges of a facing surface of at least one of the sheets. The sheets are combined into a laminate by being passed between a pair of rollers which apply sufficient pressure to remove excess oil from between the facing surfaces and to spread the wax thereby forming a continuous seal along the longitudinal edges of the laminate. Air between the facing surfaces is displaced by the oil and the wax forms the seal to prevent reentry of the air and seepage of the oil along the longitudinal edges of the laminate. The laminate is tightly held together to permit handling or fabrication without delamination.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: May 28, 1991
    Assignee: Armco Inc.
    Inventor: Jerry W. Schoen
  • Patent number: 5002831
    Abstract: Novel ionomeric silane coupling agents are disclosed and their use in bonding a matrix polymer to a mineral substrate is described. The coupling agents comprise amic acid-functional silanes which are partially neutralized with metal cations and are prepared by reacting a mixture of (I) an amine-functional silane, (II) a stoichiometric excess of a dicarboxylic organic acid and (III) an ionic compound containing a metal cation, wherein 10% to 80% of the excess carboxylic acid functionality is neutralized by the metal cations. The coupling agents greatly improve bonding to the matrix polymer in moist environments and are particularly suitable for use in formulating filled injection molding compositions.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: March 26, 1991
    Assignee: Dow Corning Corporation
    Inventor: Edwin P. Plueddemann
  • Patent number: 5001011
    Abstract: A novel ionomeric silane coupling agent is disclosed and its use in bonding a matrix polymer to a mineral substrate is described. The coupling agent is prepared by partially neutralizing the combined acid functionality present in a mixture of an acid-functional silane (or metal salt thereof) and an acid-functional film former with a metal ion. The coupling agent greatly improves bond strength in moist environments and is particularly suitable for use in formulating filled injection molding compositions.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: March 19, 1991
    Assignee: Dow Corning Corporation
    Inventor: Edwin P. Plueddemann
  • Patent number: 4988401
    Abstract: The invention relates to a process for adhering rubber to aluminium. The process comprises a succession of steps: anodization of the surface of the aluminium which is intended to be brought into contact with the rubber; treatment of the anodized surface with a solution of silane mercaptan in an organic solvent; followed by drying; and applying the rubber to be adhered while the treated surface is hot. The invention finds application in the production of all aluminium-rubber composites and in particular those which form guides for automobile door windows.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: January 29, 1991
    Assignee: Cegedur Pechiney Rhenalu
    Inventor: Catherine Rebreyend
  • Patent number: 4976806
    Abstract: A bonding composition comprising a metal oxide melt comprising (a) CaO, (b) SiO.sub.2 and/or Al.sub.2 O.sub.3, and (c) a metal oxide selected from TiO.sub.2, ZrO.sub.2, Cr.sub.2 O.sub.3, HfO.sub.2, Nb.sub.2 O.sub.3 and Ta.sub.2 O.sub.5 is melt-bonded on the surface of a ceramic material, and the ceramic material is bonded to an adherent, if necessary through at least one layer selected from a plating layer, a solder layer, and a buffer layer. In this manner, a strong bonding can be very easily obtained.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: December 11, 1990
    Assignee: Sumitomo Cement Co., Ltd.
    Inventors: Nobuya Iwamoto, Norimasa Umesaki, Hiroaki Hidaka, Yukio Haibara
  • Patent number: 4948366
    Abstract: Ceramic orthodontic brackets are bonded to teeth with dental adhesive. Each bracket has a silica-containing layer on the tooth facing base of the bracket. A silanation layer is also applied to the base. The silanation layer is deposited from a solution containing a first silane coupling agent reactive with organic resin in the adhesive and a second silane coupling agent having a non-reactive orgainc group. Collectively the silanes occupy all of the silanation sites on the silica-containing substrate. By controlling the ratio of reactive and non-reactive silane coupling agents, the bond strength between the substrate and the adhesive can be controlled. A set of ceramic orthodontic brackets can have uniform force of removal by varying the porportions of silane coupling agents on the brackets.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: August 14, 1990
    Assignee: Unitek Corporation
    Inventors: Jerold S. Horn, Henrick K. Gille
  • Patent number: 4935462
    Abstract: A mixture of benzyl alcohol and hydroxy benzene is disclosed, for use in the bonding together of polyamide articles. In embodiments, the mixture comprises 5 to 50% by weight of benzyl alcohol, 20 to 90% by weight of phenol and 5 to 30% by weight of polyamide. In other embodiments, the mixture comprises 20 to 60% by weight of benzyl alcohol, 20 to 60% by weight of ortho-dihydroxy benzene and 20 to 60% by weight of a lower alcohol having one to four carbon atoms. The mixture may be applied to a polyamide article, which may then be contacted with a second polyamide article and heated to effect bonding. In embodiments, the mixture may be applied in a pattern e.g. to polyamide in the form of film, so that a polyamide structure having a similar pattern of bonds may be obtained. For example, the composition may be used to bond film or sheet together so as to form fluid flow passages therebetween e.g. as in a heat exchanger.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: June 19, 1990
    Inventor: Anthony J. Cesarino
  • Patent number: 4910077
    Abstract: Printed wiring boards useful for high frequency applications are obtained by laminating a copper foil pretreated with a silane to a polynorbornene prepreg. The prepreg is made by impregnating a fiberglass cloth with a ring-opening polymerized polymer. The copper foil is pretreated with a silane which is capable of improving the bond strength between the copper foil and a norbornene copolymer.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: March 20, 1990
    Assignee: B.F. Goodrich Company
    Inventor: George M. Benedikt
  • Patent number: 4897144
    Abstract: An epoxy-sulfonylazide having the general formula ##STR1## wherein R is lower alkyl and R' is hydrogen or lower alkyl.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: January 30, 1990
    Assignee: Hercules Incorporated
    Inventor: Anthony B. Clayton
  • Patent number: 4895612
    Abstract: Polyamide bodies, e.g., foils or sheets, are welding together or laminated by forming methylene bridges between nitrogen atoms in the separate bodies by pressing them together in the presence of a alkaline paraformaldehyde/methanol solution containing a catalytic amount of oxalic acid.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: January 23, 1990
    Assignee: University of Delaware
    Inventors: Nadka V. Avramova, Stoyko C. Fakirov, Jerold M. Schultz
  • Patent number: 4892618
    Abstract: A method for the manufacture of products containing compressed and adhesive-bonded wood chippings, preferably of different sizes. Before the chippings are combined together by glueing to form a product of high dimensional stability, they are impregnated with lignin in conjunction with water and at a pH which essentially does not exceed 12.5. Once the lignin has been absorbed by the wood chippings it is fixed against leaching by the water by the modification of same into an essentially water-insoluble form by impregnating the chips with a weakly acid aqueous solution of a metal salt.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: January 9, 1990
    Inventors: Rune Simonson, Brita Ohlsson
  • Patent number: 4880702
    Abstract: A composition for stabilizing a denture in the form of a thin strip consisting of three layers, piled up one over another, which composition is characterized in that:(a) a swelling ability and solubility of outside layers are higher than those of an inside layer,(b) the swelled outside layers have an ability to adhere to gums and a denture base,(c) the inside layer has a self-supporting ability and a shape-retaining ability for the outside layers, and(d) the inside layer has an ability to adhere to the gums and the denture base after the outside layers have flowed away through dissolution.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 14, 1989
    Assignee: Shionogi & Co., Ltd.
    Inventors: Morio Homan, Nizo Sugie, Masakiyo Yoshimura, Yoshikazu Shirakawa
  • Patent number: 4876154
    Abstract: The present invention relates to water-born emulsion adhesives based on polymers or copolymers of vinyl acetate and having uniformly dispersed therein an adhesion promoter consisting essentially of an alkoxysilane and up to about 80% by weight of a plasticizer for the poly(vinyl acetate). The alkoxysilane useful herein may be selected from ##STR1## in which R is independently selected from alkyl or alkoxyalkyl radicals having 1-4 carbon atoms. The modified adhesives have improved bond strength to wood, particularly after exposure to moisture.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: October 24, 1989
    Assignee: Dow Corning Corporation
    Inventors: Gerald L. Witucki, Edwin P. Plueddemann
  • Patent number: 4797307
    Abstract: A process for the production of a polyimide film having an increased adhesiveness which includes the steps of: evenly coating a surface treating solution which contains a heat-resistant surface treating agent of aminosilane type, epoxysilane type or titanate type in an amount not less than 0.5 wt. % on a surface of a solid film comprising an aromatic polymer composition which contains 100 parts by weight of an aromatic polyamic acid and 5-150 parts by weight of an organic polar solvent and heating the solid film having the coated surface treating solution at a temperature of 100.degree.-600.degree. C., to imidize the polyamic acid constituting the solid film as well as to dry the film.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: January 10, 1989
    Assignee: Ube Industries, Ltd.
    Inventors: Akihiro Kunimoto, Seiichiro Takabayashi, Yuji Matsui
  • Patent number: 4775706
    Abstract: A starch-based alkaline curing adhesive is disclosed. The adhesive, when employed in the preparation of corrugated paperboard provides the paperboard with superior water resistant bonds. The adhesive contains from about 6 to 35%, based on total weight of the adhesive, solids basis, of a latex polymer of a halohydrin quaternary ammonium monomer.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: October 4, 1988
    Assignee: National Starch and Chemical Corporation
    Inventors: Carmine P. Iovine, Robert H. Williams, Craig H. Leake
  • Patent number: 4764239
    Abstract: A curable composition including a monomer having at least one curable acrylic functionality, an accelerator and optionally a free radical initiator, wherein the accelerator is a compound of the formula ##STR1## wherein R' is H or alkyl; when R' is H, R is substituted or unsubstituted cyclohexyl, alkenylamino, or C.sub.3 -C.sub.10 branched alkyl; andwhen R' is alkyl, R is aralkyl.Such compositions are useful as fixturing (e.g., threadlocking) compositions, and overcome the problems of poor solubility in organic non-polar media and temperature constraints associated with the use of saccharin per se as an accelerator in such compositions.Also disclosed is a corresponding method of polymerizing compositions containing acrylic-functional compounds, and a method of making the substituted saccharin compounds from the corresponding substituted benzene sulfonamide.Alkenylamido-substituted saccharin compounds and alkyl, aralkyl-disubstituted saccharin compounds are specifically disclosed.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: August 16, 1988
    Assignee: Loctite Corporation
    Inventors: Anthony F. Jacobine, David M. Glaser
  • Patent number: 4761184
    Abstract: A formaldehyde binder containing at least one organic hydroxy compound, at least one amide, and water. This binder is suitable for use in preparing boards from lignocellulosic materials using adhesive based on formaldehyde.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: August 2, 1988
    Assignee: Enigma N.V.
    Inventor: Efthalia V. Markessini
  • Patent number: RE34766
    Abstract: A laminating and coating adhesive based on an aqueous dispersion of(1) a copolymer of a vinyl ester, and/or an acrylic acid ester, and/or a further monomer and an ethylenically-unsaturated functional group-containing monomer having from 3 to 18 carbon atoms and hydroxy and carbonyl groups as functional groups, such as a monocarboxylic acid or dicarboxylic acid and/or N-methylol-(meth)-acrylamide,(2) an epoxy compound, and(3) an amine hardener.The adhesive gives a laminate bond with especially high resistance to peeling even in the case of thermal stress and/or in the presence of water.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: October 25, 1994
    Assignee: Wacker-Chemie GmbH
    Inventors: Ekkehard Merz, Robert Singer