Patents Assigned to Essex Specialty Products, Inc.
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Patent number: 5620648Abstract: A prefabricated vehicle window having an exterior molding is prepared by (a) placing a protective film inside a glass support fixture having a cavity to line the cavity; (b) depositing a bead of a first hardenable polymeric material (first bead) on top of the protective film in an amount sufficient to fully cover the marginal edges of the outer surface of a glass sheet subsequently placed on the glass support fixture; (c) placing a glass sheet having exposed side surfaces, inner surface and outer surface on the glass support fixture, with the outer surface facing toward the glass support fixture, and at least a portion of its periphery pressing against the first bead which causes the first bead to conform to the shape and contour of the film-covered glass support fixture cavity and cover the adjacent exposed marginal edges of the outer glass surface, and squeezes out any excess first bead over to the exposed side surfaces, thereby partially or fully covering the exposed side surfaces; and (d) depositing a beaType: GrantFiled: November 30, 1995Date of Patent: April 15, 1997Assignee: Essex Specialty Products, Inc.Inventors: Curtis L. Volkmann, Henry W. Griffin
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Patent number: 5618904Abstract: Described herein is a one-part hot melt adhesive comprising the reaction product of: (a) a polyester polyol with an equivalent weight in the range of from about 250 to about 3,000; (b) a polyisocyanate; and (c) at least about 1 weight percent hydroquinone bis (2-hydroxyethyl) ether; wherein the isocyanate content of the resulting product is at least about 0.5 percent. Also described is a one-part hot melt adhesive comprising the reaction product of: (a) a polyether polyol; (b) a polyisocyanate; and (c) hydroquinone bis (2-hydroxyethyl) ether; wherein the isocyanate content of the resulting product is at least about 0.5 percent. It has been discovered that the compositions of the invention provide adhesives with increased resistance to softening at high temperatures (e.g., above about 70.degree. C.) after curing.Type: GrantFiled: December 29, 1993Date of Patent: April 8, 1997Assignee: Essex Specialty Products Inc.Inventors: Brian Martin, Julie A. Muehlfeld
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Patent number: 5507409Abstract: A container for transporting and storing a liquid comprising an outer container; an inner liner and a top closure film, both inner liner and top closure being films comprising at least one plastic layer and an impermeable layer, and a sealant disposed above the level of contained liquid and between the juncture of the inner liner and top film. The inner liner and top closure are preferably laminate films having an inner, air impermeable (e.g., metal foil) layer between a first plastic (e.g., polyester) layer and a second plastic (e.g., polyethylene) layer.Type: GrantFiled: November 2, 1994Date of Patent: April 16, 1996Assignee: Essex Specialty Products, Inc.Inventor: John E. Paradine
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Patent number: 5466727Abstract: Described herein is a primer composition which comprises a solution or dispersion of: (a) about 2 percent to about 30 percent by weight of a film-forming resin; (b) about 2 percent to about 80 percent by weight of a reaction product of an epoxy silane and an amino silane, wherein the amino silane contains at least two amine groups per molecule, which is prepared by (1) contacting an amino silane and epoxy silane in amounts such that the molar ratio of epoxy silane to amino silane in the reaction mixture is less than about 1.8:1.0 and then (2) adding additional epoxy silane to the reaction mixture so that the molar ratio of epoxy silane to amino silane is at least about 2:1 in a volatile solvent. It has been discovered that the primer of the invention enhances the bonding of a non-porous substrate, such as glass, to a second substrate, particularly when used in conjunction with a "fast cure" adhesive comprised of an isocyanate-functional prepolymer and dimorpholinodiethyl ether.Type: GrantFiled: August 5, 1994Date of Patent: November 14, 1995Assignee: Essex Specialty Products, Inc.Inventor: Harry W. Hsieh
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Patent number: 5438181Abstract: An apparatus includes (a) a device which is capable of selectively generating heat in electrically-conductive material without substantially generating heat in non-electrically-conductive material, (b) a device capable of heating non-electrically-conductive material, and (c) an insulating shield between the two devices to help focus the energy generated by at least one of the devices.Type: GrantFiled: December 14, 1993Date of Patent: August 1, 1995Assignee: Essex Specialty Products, Inc.Inventors: Curtis L. Volkmann, Frederick A. Buck
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Patent number: 5414053Abstract: Described herein is an adhesive composition comprising (a) an aromatic polyester or aromatic polycarbonate, (b) a polyepoxide, (c) an effective amount of an initiator or catalyst for the reaction of carbonate or ester groups in the aromatic polycarbonate or aromatic polyester with oxirane groups in the polyepoxide, and (d) from about 1 to about 50 weight percent of (i) a polymeric material different from (b) with pendant epoxy groups and a glass transition temperature below about 50.degree. C., or (ii) a solution of a copolymer of an an alkyl ester of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and a hydroxyalkyl ester of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, in a polyether polyol having a molecular weight of at least about 200; wherein the number ratio of oxirane groups in component (b) to the sum of the number of ester groups and twice the number of carbonate groups in component (a), is in the range of from about 0.8:1 to about 1.4:1.Type: GrantFiled: June 23, 1993Date of Patent: May 9, 1995Assignees: Essex Specialty Products, Inc., The Dow Chemical CompanyInventors: Curtis L. Volkmann, Theodore L. Parker
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Patent number: 5330597Abstract: The invention is a process for preparing a prefabricated vehicle window comprising the sequential steps of:(a) placing a cover film in a receptacle to provide a film cavity, with a portion of the cover film extending out of the receptacle, wherein the cavity is of a dimension sufficient to hold a bead of adhesive which would extend around the entire periphery of the window;(b) depositing a bead of an uncured, deformable adhesive in the cavity on top of the cover film in an amount sufficient to slightly overfill the cavity; and(c) contacting the bead of adhesive with a vehicle window under conditions sufficient to press adhesive out of the cavity and between the vehicle window and the portion of the cover film extending over the sides of the receptacle such that the adhesive pressed out of the cavity bonds the film to the window along the edges of the bead of adhesive.Type: GrantFiled: August 18, 1992Date of Patent: July 19, 1994Assignee: Essex Specialty Products, Inc.Inventors: William E. Leuchten, Henry W. Griffin
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Patent number: 5193928Abstract: The invention provides a device for applying a fluid medium onto the surface of an article. It comprises a tightly sealed, preferably metallic storage container and a fluid application assembly including a sleeve member and an application member which latter is laterally covered by the sleeve member when the device is in its inoperative position. Upon executing a relative movement between sleeve member and storage container, a locking member is destroyed, a seal of the container is broken and the application member is exposed such that the device is ready to use. It is particularly suitable for storing and applying small amounts of moisture-sensitive liquids, e.g. primers for adhesive joints.Type: GrantFiled: June 22, 1992Date of Patent: March 16, 1993Assignee: Essex Specialty Products, Inc.Inventors: Dieter Balzer, Fabian Gysin, Robert Schoenholzer
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Patent number: 5115086Abstract: In one aspect, this invention is a primer which comprises a solution of: (a) a polyester resin of a carboxylic acid and a glycol; and (b) a polymethylene poly(phenyl isocyanate), diphenylmethane diisocyanate, or mixture thereof; in a volatile solvent, wherein the weight ratio of (a):(b) is in the range of from about 0.25:1.0 to 2.0:1.0. In a second aspect, this invention is a primer which comprises a solution of: (a) 5-18 weight percent of a polyester resin of a carboxylic acid and a glycol; and (b) 6-17 weight percent of a polymethylene poly(phenyl isocyanate), diphenylmethane diisocyanate, or mixture thereof; in a volatile solvent. It has been discovered that the primer of the invention advantageously provides improved adhesion characteristics of metal-to-glass bonding when used to prime paint-coated metal substrates before the application of a urethane adhesive, particularly when used with a "fast cure" adhesive comprised of an isocyanate-functional prepolymer and dimorpholinediethyl ether.Type: GrantFiled: February 6, 1990Date of Patent: May 19, 1992Assignee: Essex Specialty Products, Inc.Inventor: Harry W. S. Hsieh
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Patent number: 5064871Abstract: Disclosed herein is a composition comprising an isocyanate-reactive compound and a catalyst comprising a bismuth carboxylate and a zirconium carboxylate, wherein the catalyst is present in an amount sufficient to catalyze a reaction with the isocyanate-reactive compound and a polyisocyanate. Also disclosed is a process for preparing a composition, which comprises contacting an isocyanate-reactive compound with a polyisocyanate, in the presence of an effective amount of a catalyst comprising a bismuth carboxylate and a zirconium carboxylate, under reaction conditions sufficient to form a composition containing at least one urethane group.Type: GrantFiled: November 13, 1990Date of Patent: November 12, 1991Assignee: Essex Specialty Products, Inc.Inventor: Deborah A. Sciangola
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Patent number: 5063269Abstract: Disclosed herein is a one-part adhesive which comprises a mixture of: (a) a polymerizable ethylenically unsaturated urethane polymer; and (b) a polymerizable ethylenically unsaturated acid, acid salt, or acid anhydride wherein component (b) is present in an amount in the range of from about 0.5 weight percent to about 50 weight percent of component (a). Such an adhesive is especially suitable for bonding components together in the manufacture of automobiles, and is particularly suitable for bonding sheet molding compound (SMC) components to metal or to other SMC components.Type: GrantFiled: January 16, 1990Date of Patent: November 5, 1991Assignee: Essex Specialty Products, Inc.Inventor: Ju-Ming Hung
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Patent number: 4853270Abstract: This invention relates to a passive restraint for an automobile, and moe particularly, to a knee blocker for automotive applications that is positioned under the steering column forward of the knees. In order to provide energy absorption, the knee blocker includes an energy absorbing core filled with a plurality of thermoset resin pellets. The energy absorbing core is disposed between a metal stamping and a vinyl foam skin padding. Each of the pellets consist essentially of substantially uncured thermoset polymeric resins and microspheres which have been intermixed and extruded. Each of the pellets also has a coating of a B-staged resin. These thermoset pellets are made in the following manner. A low viscosity thermoset resin and microspheres are mixed together without melting the thermoset resin and extruding the mixture to form a continuous strand of paste-like uncured material.Type: GrantFiled: June 27, 1988Date of Patent: August 1, 1989Assignee: Essex Specialty Products, Inc.Inventor: Joseph S. Wycech
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Patent number: 4842938Abstract: A method for making a one package heat curable (i.e. thermosetting) composition which, on heating, forms a urethane/epoxy/silicone interpenetrating polymer network (IPN) system; one package heat curable compositions made by such a method; metal reinforcing patches, directly adherent to an oily metal surface such as an oily steel surface, comprising a sheet-like carrier having thereon such a one package heat curable composition in combination with a filler admixed therewith, said filler possibly including magnetic particles; a method for reinforcing metal which comprises applying thereto such a metal reinforcing patch and curing said heat curable composition at an elevated temperature to form a urethane/epoxy/silicone interpenetrating polymer network.Type: GrantFiled: March 23, 1988Date of Patent: June 27, 1989Assignee: Essex Specialty Products, Inc.Inventors: Sidky D. Rizk, Navinchandra B. Shah, John W. Powers
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Patent number: 4803108Abstract: A reinforcing sheet adaptable to the reinforcement of a panel formed of metal, plastic or sheet molding compound, which reinforcing sheet contains a perforated honeycomb member with a thermosetting adhesive layer on each side of the honeycomb member and a reinforcement backing adhered to one of the adhesive layers, the other adhesive layer being applied to the panel to be reinforced. The reinforcing sheet provides excellent flexural reinforcement and impact absorbing properties and is advantageously used to reinforce cold rolled steel, such as an automobile panel.Type: GrantFiled: May 1, 1987Date of Patent: February 7, 1989Assignee: Essex Specialty Products, Inc.Inventors: William E. Leuchten, Robert P. Kretow
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Patent number: 4803105Abstract: A reinforcing sheet adaptable to the reinforcement of a panel formed of metal, plastic or sheet molding compound, which reinforcing sheet contains a moisture impermeable barrier embedded in a thermosetting adhesive layer and a reinforcement adhered to the surface of the adhesive layer opposite the surface to be applied to the panel to be reinforced. The reinforcing sheet with improved resistance to the adverse effects of moisture is advantageously used to reinforce cold rolled steel, such as an automobile panel.Type: GrantFiled: February 13, 1987Date of Patent: February 7, 1989Assignee: Essex Specialty Products, Inc.Inventors: Robert P. Kretow, John W. Powers
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Patent number: 4780520Abstract: A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture, the sealant containing a polyurethane prepolymer having an isocyanate functionality between 2.3 and 3.0, an isocyanate content of about 1-4 percent by weight, and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of the sealant, of dimorpholinodiethyl ether.Type: GrantFiled: September 9, 1987Date of Patent: October 25, 1988Assignee: Essex Specialty Products, Inc.Inventors: Sidky D. Rizk, Harry W. S. Hsieh, John J. Prendergast, Sr.
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Patent number: 4769406Abstract: A hot melt adhesive suitable for bonding plastic, metal, and glass together has been developed by blending together into a homogenous mixture 10 to 20 weight percent of ethylene/vinyl acetate/acid functional terpolymer resin of low acid number, 15 to 50 weight percent of ethylene/vinyl acetate/acrylic acid terpolymer resin of high acid number and 30 to 60 weight percent of tackifying resins based on alpha-methylstyrene, rosin, or a terpene resin. Additionally, suitable antioxidants and surfactants are added to control the aging and application of the composition.Type: GrantFiled: March 2, 1987Date of Patent: September 6, 1988Assignee: Essex Specialty Products, Inc.Inventor: Robert J. Keithley
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Patent number: 4766183Abstract: A method for making a one package heat curable (i.e. thermosetting) composition which, on heating, forms a urethane/epoxy/silicone interpenetrating polymer network (IPN) system; one package heat curable compositions made by such a method; metal reinforcing patches, directly adherent to an oily metal surface such as an oily steel surface, comprising a sheet-like carrier having thereon such a one package heat curable composition in combination with a filler admixed therewith, said filler possibly including magnetic particles; a method for reinforcing metal which comprises applying thereto such a metal reinforcing patch and curing said heat curable composition at an elevated temperature to form a urethane/epoxy/silicone interpenetrating polymer network.Type: GrantFiled: November 4, 1986Date of Patent: August 23, 1988Assignee: Essex Specialty Products, Inc.Inventors: Sidky D. Rizk, Navinchandra B. Shah
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Patent number: 4758648Abstract: A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture, said sealant comprising a polyurethane prepolymer having an isocyanate functionality between 2.3 and 3.0, and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of said sealant, of dimorpholinodiethyl ether.Type: GrantFiled: October 20, 1986Date of Patent: July 19, 1988Assignee: Essex Specialty Products, Inc.Inventors: Sidky D. Rizk, Harry W. S. Hsieh, John J. Prendergast, Sr.
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Patent number: 4719267Abstract: A heat curable one package polyurethane resin composition adaptable to use for automotive seam sealing, particularly under high solids acrylic enamel paints, said composition comprising an isocyanate terminated polyurethane prepolymer having pendant epoxy groups along the polymer chain and the isocyanate groups of which are blocked by reaction with an oxime, and a curing agent having at least two active hydrogen atoms per molecule, such as a polyol, a polyamine, or a blocked polyamine.Type: GrantFiled: August 6, 1986Date of Patent: January 12, 1988Assignee: Essex Specialty Products, Inc.Inventors: Sidky Rizk, Harry W. S. Hsieh