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| Number | Title | Issue Date |
| 3985928 | Heat-resistant laminating resin composition and method for using same A heat-resistant resin composition suitable for use in multilayer super high density printed circuit boards, comprising a polyaminobismaleimide, a polyepoxy compound, and an aromatic vinyl copolymer containing as structural unit maleic anhydride and/or an... | 10/12/1976 |
| 3984266 | Process for bonding a ferro-cement structure with fiberglass reinforced plastic A process for bonding a glass fiber reinforced plastic to a ferro-cement ucture to improve impact strength of the ferro-cement structure comprising the steps curing the ferro-cement mortar; acid etching the mortar on the side of the ferro-cement mortar t... | 10/05/1976 |
| 3979393 | Imidyl- and isoimidyl-phthalic anhydrides, process for their manufacture and their use for curing epoxide resins The invention relates to new imidyl compounds of the formula Ia and isoimidyl compounds of the formula Ib ##SPC1## In which A denotes a divalent organic radical, especially an ethenylene, ethylene or propylene group. These compounds serve as curing agents... | 09/07/1976 |
| 3972765 | Method of making laminate sheets for printed circuit boards In preparing an epoxy resin laminate sheet by impregnating a nonwoven fabric of glass fiber with an epoxy resin to form a prepreg, laminating a predetermined number of so formed prepregs and pressing, while heating, the laminate, when the nonwoven fabric ... | 08/03/1976 |
| 3972821 | Heat transfer composition and method of making A heat transfer composition, consisting essentially of an epoxy resin, a high temperature curing agent therefor, nitrile rubber, polybutene, particulate heat transfer coefficient-increasing filler and a cold flow control agent such as asbestos.... | 08/03/1976 |
| 3969177 | Laminating method Method of laminating pluralities of sheets as unitary panels with heat and pressure curable adhesive in which unlaminated, uncured sheet pluralities are alternately stacked in a press lay-up with partially cured or semicured unitary sheet pluralities and ... | 07/13/1976 |
| 3968304 | Polyester bonded to rubber and method for making the same Rubber compounds are readily bonded to polyester reinforcing elements, particularly tire cords of polyester fibers, using a two-step dip process in which the first dip consists essentially of a low molecular weight polyallyl-glycidyl ether in aqueous medi... | 07/06/1976 |
| 3966530 | Surface treatment of polymers A method of surface treating elastomer surfaces comprises applying thereto a 4-substituted-1,2,4-triazoline-3,5-dione preferably in solution. The treatment improves adhesion using normal elastomer adhesives, improves resistance to peeling with flexible pa... | 06/29/1976 |
| 3964952 | Method of manufacture of composite materials consisting of carbon fibers and resin and materials manufactured in accordance with said method In a method of manufacture of composite materials consisting of carbon fibers and resin, a polymer is fixed on carbon fibers by means of a chemical bond and the fibers thus coated are then incorporated in a resin which is compatible with the polymer.... | 06/22/1976 |
| 3962011 | Composite of polyamine bonded to rubber and method for making the same Rubber compounds are readily bonded to nylon or polyamides, particularly tire cords of polyamides in which a high proportion of the amide linkages are attached directly to aromatic rings, using a two-step dip process in which the first dip comprises a liq... | 06/08/1976 |
| 3962520 | Adhesive composition for flexible printed circuit and method for using the same As an adhesive used for a laminate for a flexible printed circuit, there is provided an adhesive composition comprising as the essential components a polyester resin, an isocyanate compound, and a B-stage epoxy resin. This composition is excellent in flow prop... | 06/08/1976 |
| 3960803 | Flexible nontacky prepreg for bonding coils in high voltage devices and method of making said prepreg A flexible, nontacky prepreg for use in bonding high voltage coils and inner cooling channels which comprises a fibrous mat material containing a high molecular weight epoxy and a sterically hindered anhydride. The resin comprises approximately 25 to 500%... | 06/01/1976 |
| 3960626 | Method of making high performance ablative tape A high temperature tape for use in protecting a structural item to be subjected to high temperature, and the method whereby this novel tape is made are set forth. The tape is principally constituted by a number of elongated carrier fibers disposed in an e... | 06/01/1976 |
| 3958072 | Cured polyester product A cured polyester resin product is obtained by curing a substrate which was treated with a liquid unsaturated polyester resin composition containing an ethylenically unsaturated monomer having at least one epoxy group and was covered with a saturated poly... | 05/18/1976 |
| 3951721 | Method of forming a mechanically strong reflective surface A reflecting surface is formed on an inner base plate of an integrating sphere. A fabric is bonded to an under coat layer of said base plate and furthermore a reflecting layer is formed on said fabric. As the fabric, cheese cloth is used and said reflecti... | 04/20/1976 |
| 3950204 | Low pressure, thin film bonding Disclosed is a method particularly useful in fabricating microwave components for joining two metallic surfaces together to form an extremely strong bond, having good electrical and mechanical characteristics. One surface is primed or prepared with a suit... | 04/13/1976 |
| 3943623 | Hollow cavity package electronic unit A method of assembling split, hollow package sections housing an electronic element, having an internal lead wire and having external lead wires extending outwardly therefrom, wherein the package sections are adhesively secured together with external lead... | 03/16/1976 |
| 3940537 | Fibrous mats Fibrous mats which are insoluble in styrene are disclosed. The mats comprise a fibrous material and a binder resin which is the reaction product of (a) a first monomer selected from the group consisting of styrene, lower alkyl acrylates, lower alkyl metha... | 02/24/1976 |
| 3940544 | Production of polyester yarn An improved polyethylene terephthalate tire yarn is prepared by applying to the yarn a finish composition comprising a polyalkylene glycol compound having the formula in which R1 and R2 are the same or different lower alkylene units ... | 02/24/1976 |
| 3940534 | Electrical laminate A mechanically sound electrically stable substrate for use in an electrical laminate wherein the substrate supports at least one electrically conductive metallic layer. The substrate portion comprises a woven glass cloth base pad which is interposed betwe... | 02/24/1976 |
| 3940374 | Synthesis of polythiol polymer intermediates from polyunsaturated hydrocarbons Polythiols having more than two terminal and/or pendant thiol groups per polymer molecule are formed by the free radical catalyzed addition of a monomer system made up of either hydrogen sulfide or a dithiol alone or in combination with an acetylenic comp... | 02/24/1976 |
| 3939020 | Method of balancing a rotor A method of balancing a rotor. An epoxy resin balancing composition is applied to the rotor and the rotor is dynamically tested before the resin is cured. The resin composition includes fibrous inorganic material, which renders it cohesive, weighting mate... | 02/17/1976 |
| 3937865 | Reinforced plastics carrier for printed circuits Non-woven glass-fiber webs for reinforcing plastics material carrying printed circuits are produced by the wet process from E-glass fibers bonded with polyvinyl alcohol. The polyvinyl alcohol used is a powder or suspension, has a degree of hydrolization o... | 02/10/1976 |
| 3936575 | Flexible metal-clad laminates and method for manufacturing the same A metal-clad laminate as a base board for a flexible printed circuit, consisting of a metal foil and a base sheet composed of a fibrous base material impregnated with a resin composition comprising a polyepoxy compound and a styrene copolymer containing s... | 02/03/1976 |
| 3936342 | Steel plate bonding process and primer composition A process for bonding steel sheets, e.g., into metallic cans, which comprises applying first a primer comprising 0.1 to 2.5 weight parts of a bisphenol type A epoxy resin having a mean molecular weight of more than about 800, preferably 2000 to 4000, and ... | 02/03/1976 |
| 3933677 | Preparation of aqueous dispersions of blocked aromatic polyisocyanates Aqueous dispersions of aromatic polyisocyanates blocked with phenolic compounds are prepared by mixing the polyisocyanate dissolved in an organic water-soluble solvent and an aqueous solution containing an excess of the phenolic compound in the presence o... | 01/20/1976 |
| 3931836 | Laminated polymeric articles and process for the production thereof A process is provided for bonding otherwise incompatible resin systems to form laminated resinous articles. A first resin layer is coated with a solvated coating which forms a surface solution with the surface of the first layer. Thereafter, a second resi... | 01/13/1976 |
| 3932689 | Flexible adhesive composition and method for utilizing same and article formed therefrom This invention provides an adhesive composition for use in flexible printed circuits, comprising a phenol-formaldehyde resin, a polyepoxy compound, an acrylonitrile-butadiene copolymer and/or a polyvinylacetal resin, and a styrenic copolymer containing as... | 01/13/1976 |
