Abstract: Spray coating, particularly flat spray coating of circuit boards. Applicant's method of conformal coating, eliminates "railroading" at the edges of the flat spray web and assures precise control of the amount of coating material placed on the circuit board surface.The method includes longitudinally advancing a pressurized coating over a surface to be coated, while simultaneously feeding the coating in a flat spray pattern, and triggering feeding "ON/OFF" so as to proportion the amount of coating being fed onto the surface and to reduce "fishtail" at the edges of the flat spray pattern.
Type:
Grant
Filed:
June 13, 1988
Date of Patent:
May 21, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: A glass fiber-reinforced composite material is produced by treating glass fibers with a silane composition comprising silane molecules having amine functional groups and silane molecules having ethylenically-unsaturated functional groups; admixing the treated glass fibers with a polyolefin resin, and a fiber bonding agent comprising a polymerizable unsaturated organic compound having at least two polymerizable unsaturation groups, a vinyl-polymerizable unsaturated, hydrolyzable silane, and a free radical generator, and exposing the resultant mixture to conditions of temperature and pressure sufficient to cause the formation of a glass fiber-reinforced composite material. The use of the silane composition promotes improved impact strength of the composite.
Type:
Grant
Filed:
December 21, 1989
Date of Patent:
May 7, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: The present invention is directed to methods and apparatus for spraying liquid compositions by airless spray techniques so as to obtain wider spray patterns without having to alter the construction or configuration of conventional nozzles, nozzle tips or spray guns. By means of the present invention, the width of a spray pattern may be changed while the spraying operation is being conducted.
Type:
Grant
Filed:
March 22, 1989
Date of Patent:
April 23, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: A process for hydrogenating feeds into their corresponding alcohols by contact with a coprecipitated catalyst comprising copper, aluminum, and a metal (X) selected from the group consisting of magnesium, zinc, titanium, zirconium, tin, nickel, cobalt and mixtures thereof; that has been reduced with an increasing temperature during the reduction.
Type:
Grant
Filed:
December 21, 1989
Date of Patent:
April 16, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: A mixed aliphatic/aromatic polycarbodiimide prepared by first polymerizing an aliphatic isocyanate or mixture thereof, optionally in the presence of a polyfunctional isocyanate; arresting polymer chain growth by reaction with a stoichiometrically deficient amount of a monofunctional isocyanate-reactive compound, followed by further polymerization with an aromatic diisocyanate.
Type:
Grant
Filed:
March 23, 1990
Date of Patent:
April 16, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: A process and formulation are provided for the removal of sulfides from solids and fluids utilizing certain halonitroalkanols. These compounds can rapidly and quantitatively remove hydrogen sulfide, organic sulfides and their salts from solutions, particularly aqueous mixtures.
Type:
Grant
Filed:
March 27, 1989
Date of Patent:
April 16, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: A process for reducing die drool during extrusion of highly filled polymeric resins for production of jacketing insulation for wire and cable by incorporating into the surface of the die in contact with said resin a compound which decreases the adhesiveness between the polymeric resin and the die surface, said compound being employed in an amount sufficient to reduce die drool.
Type:
Grant
Filed:
December 21, 1989
Date of Patent:
April 16, 1991
Assignee:
Union Carbide Chemicals and Plastics Technology Corporation
Abstract: Tri-substituted amine oxides having at least two reactive hydroxyls useful as reactive diluents in polyol polymer-containing coating compositions.
Type:
Grant
Filed:
January 30, 1990
Date of Patent:
April 16, 1991
Assignee:
Union Carbide Chemicals And Plastics Technology Corporation
Abstract: A molding additive composition comprising a mixture of low profile additive and a surfactant additive containing a silicon-oxyalkylene copolymer flow control agent and surface modifying agent; and a molding composition comprising a polyester molding resin, a low profile additive, a silicon-oxyalkylene copolymer flow control agent and surface modifying agent and a crosslinking monomer. In another embodiment, the invention embraces a molding composition comprising a polyester molding resin, a crosslinking monomer, a low profile additive, a reinforcing fiber, and a silicon-oxyalkylene copolymer flow control agent and surface modifying agent.
Type:
Grant
Filed:
November 6, 1989
Date of Patent:
April 2, 1991
Assignee:
Union Carbide Chemicals & Plastics Technology Corporation
Inventors:
Kenneth E. Atkins, Robert R. Gentry, Raymond C. Gandy
Abstract: The present invention relates to olefin polymer compositions which can be extruded into film material characterized by improved stability and optical properties. In particular, this application is directed olefin polymer compositions containing specific polyorganosiloxanes bearing a hydroxyl functionality.
Type:
Grant
Filed:
March 22, 1990
Date of Patent:
March 26, 1991
Assignees:
Union Carbide Chemicals, Plastics Technology Corporation
Inventors:
George N. Foster, Herbert E. Petty, Charles H. Blevins, II, Roswell E. King, III