Abstract: The present invention provides an arrangement for shaping multiple sheets of heat softenable material which includes a shaping station and a conveying system to deliver a plurality of heat softened sheets into the shaping station. The shaping station includes an upper vacuum mold having a plurality of downwardly facing sheet shaping surfaces each generally conforming to a desired shape of a sheet to be shaped and a plurality of stops positioned below the upper mold such that each of the sheets is aligned below a corresponding one of the upper mold sheet shaping surfaces when the sheet contacts selected stops. Lower molds are positioned below the upper mold sheet shaping surfaces to lift and press the aligned sheets against the upper mold sheet shaping surfaces to shape the sheets. A vacuum is drawn along the upper mold sheet shaping surfaces to secure the sheets to the upper mold and shape the sheets.

Abstract: The present invention provides image display panels, spacers and spacer units for the same and methods for making and using the same. The spacer units include an assembly having a first layer of generally parallel fibers positioned to form intersections with generally parallel fibers of a second layer. At least one fiber of the first and/or second layer includes a bonding agent at the corresponding intersection. The intersections form passageways which permit the passage of energy therethrough between the emitter and the display of an image display panel. A sealing frame is positioned about and engages the periphery of the spacer, the emitter and the display. The sealing frame has a deformable sealing material for providing an essentially sealed region between the spacer, emitter and display. Methods of making and using such spacers in image display panels and spacers including a fiber protectorant are also included in the present invention.

Abstract: Describes an aqueous composition of sodium potassium sulfide and methods for preparing this inter-alkali metal sulfide. One method described is the addition of sodium hydrosulfide to potassium hydroxide in an aqueous reaction medium. The aqueous sodium potassium sulfide composition preferably contains a slight excess of alkali metal hydrosulfide, e.g., sodium hydrosulfide. The sodium potassium sulfide is useful as a depilatory for removing hair from the hides of animals consumed as food.

Abstract: The present invention provides an apparatus for controlling the spray of positively-charged coating particles towards a grounded or negatively-charged dielectric material having a dielectric constant less than 4.0 and in the form of a hollow container.

Abstract: The present invention provides a green colored glass using a standard soda-lime-silica glass base composition and additionally iron, cerium, chromium and, optionally, titanium as infrared and ultraviolet radiation absorbing materials and colorants. It is preferred that the glass have a green color characterized by a dominant wavelength in the range of about 500 to 565 nanometers with an excitation purity of no higher than about 5% and include about 0.50 to 1.0 wt. % total iron, about 0.26 to 0.65 wt. % Fe.sub.2 O.sub.3, about 0.05 to 3 wt. % CeO.sub.2, 0 to about 2 wt. % TiO.sub.2, and about 20 to 650 PPM Cr.sub.2 O.sub.3. The redox ratio for the glass is maintained between about 0.20 to 0.55.

Abstract: The present invention provides a waterborne coating composition which includes a polymeric film-forming resin. The polymeric film-forming resin includes a dispersion of polymeric microparticles prepared by forming, in aqueous medium, a mixture of: (a) an unsaturated, substantially hydrophobic polyester component, and (b) an ethylenically unsaturated monomer component. With various hydrophobic polyesters, the ethylenically unsaturated monomer component of the polymeric film-forming resin includes: (a) an acrylamide or methacrylamide with N-methylol or N-alkoxymethyl functionality, (b) an alpha-beta ethylenically unsaturated compound with carboxyl functionality, and (c) an alpha-beta ethylenically unsaturated compound with no additional reactive functionality. Such a waterborne coating composition has a low V.O.C., provides added stiffness, does not block, and can be applied in such a manner that it does not substantially mask the texture of the nonwoven fabrics and/or textiles over which it is applied.

Abstract: Amorphous metal oxide barrier layers of titanium oxide, zirconium oxide and zinc/tin oxide are effective as alkali metal ion barrier layers at thicknesses below 180 Angstroms. The amorphous metal oxide barrier layers are most effective when the density of the layer is equal to or greater than 90% of the crystalline density. The barrier layers prevent migration of alkali metal ions such as sodium ions from glass substrates into a medium e.g. electrolyte of a photochromic cell, liquid material of a liquid crystal display device contacting the glass surface. The properties of the medium, particularly electroconductive metal oxide coatings, are susceptible to deterioration by the presence of sodium ions migrating from the glass.

Abstract: The present invention provides a secondary aqueous coating composition for coating sized glass fibers of a glass fiber strand, including a first water soluble, emulsifiable or dispersible curable acrylic polymer and a second water soluble, emulsifiable or dispersible curable acrylic polymer different from the first acrylic polymer, the secondary aqueous coating composition being essentially free of a urethane-containing polymer. Other aspects of the present invention include a strand of sized glass fibers having thereon the aforementioned coating composition and an optical fiber cable assembly including an optical fiber and a reinforcement strand of the sized and secondarily coated glass fibers.

Abstract: The present invention provides aqueous coating compositions adapted to coat a fiber strand having thereon a sizing composition. The aqueous coating compositions include a urethane-containing polymer and a polymer prepared by addition polymerization of a monomer selected from the group consisting of acrylic acid, methacrylic acid and a mixture thereof. Also provided by the present invention are sized fiber strands coated with the secondary coating composition and composites reinforced with the same.

Abstract: The invention provides a two-part urethane topcoat essentially including a polyol component, an isocyanate component and a hydroxy functional, polyether-modified polysiloxane copolymer component. The polysiloxane copolymer component has a molecular weight ranging from between about 1,000 to about 10,000; and is typically present in an amount ranging from between about 0.001 to about 10 weight percent. The equivalent weight (i.e., a ratio of the molecular weight of the polymer to one functional group) ratio of the --NCO molecule to the --OH molecule ranges from between about 1.0 to about 2.0. The top coat coating prepared in accordance with the present invention has an improved the abrasion resistance, mar resistance and detergent resistance.

Abstract: Multilayer high transmittance, low emissivity coatings on transparent substrates feature a special antireflective base film of at least two parts on the substrate-near side of a metallic, reflective film. A first of the two parts is in contact with the metallic film. This first film-part has crystalline properties for causing the metallic film to deposit in a low resistivity configuration. The second of the two film-parts supports the first part and is preferably amorphous. Coated articles of the invention also feature, in combination with the above-mentioned base film or independently thereof, a newly discovered, particularly advantageous subrange of thicker primer films for coated glass that can be thermally processed for tempering, heat strengthening, or bending.

Abstract: An electrodepositable composition that has: (A) an active hydrogen-containing cationic resin, electrodepositable on a cathode, having: (1) a polyepoxide; (2) an oxygen-substituted diamine compound having the following formula: ##STR1## where n is an integer from 2 to 4; and where R.sup.1 or R.sup.2 are the same or different and either one or both contain at least one oxygen and are alkyl, cycloalkyl, substituted alkyl, or substituted cycloalkyl having from 1 to 6 carbon atoms, or R.sup.1 and R.sup.2 are alkanol groups having from 2 to 6 carbon atoms, or R.sup.1, R.sup.2, and the N atom form a cyclic group which is substituted or unsubstituted such as morpholine and 1-(3-aminopropyl) imidazole; and (B) at least partially blocked isocyanate or polyisocyanate curing agent. The diamine compound of Formula I can be used alone or in conjunction with one or more secondary amines, nonhydroxy group containing amines and/or amines with ring structures.

Abstract: The present invention pertains to a primer composition having a volatile organic content (V.O.C.) less than about 1.5. A pigmented or clear topcoat may be applied over this primer composition. The primer composition includes a substantially solvent-free urethane dispersion and a substantially solvent-free acrylic. The solvent-free urethane component and the solvent-free acrylic component could contain as much as 15 weight percent of a solvent as long as the combined solvent content of these two components is such that the V.O.C. of the resulting primer is less than about 1.5. The amount of the solvent-free urethane component present in the low V.O.C. primer prepared in accordance with the present invention ranges from between about 10 to about 90 weight percent, while the amount of the solvent-free acrylic component ranges from between about 90 to about 10 weight percent. The solvent-free urethane component has a tensile strength which ranges from between about 4,000 to about 9,000 psi.

Abstract: A spacer stock has a pair of outer legs joined by a base to provide the spacer stock with a generally U-shaped cross section. The outer legs are formed e.g. each leg has a pair of members having a hairpin cross section to reduce the degree of torsional twist of the spacer stock and/or spacer frame with the legs preferably only connected by the base having only one thermal conducting path e.g. through the base from one leg to the other leg. The spacer stock may be shaped or sections of spacer stock joined to provide a spacer frame. The spacer frame may be used to fabricate a multi-sheet glazing unit e.g. by securing a sheet to each of the outer legs with moisture impervious adhesive or sealant.

Abstract: A color-plus-clear coating system is disclosed. A pigmented or colored basecoat is first applied to a substrate followed by the application of a transparent topcoat to the basecoat. The transparent topcoat composition is a crosslinkable composition comprising (1) a material containing a plurality of carbamate and/or urea functional groups and (2) an aminoplast crosslinking agent. The topcoat composition provides a composite coating with improved acid etch resistance, making the composite coating particularly useful as an automotive topcoat.

Abstract: An antireflectance coating is disclosed comprising a first graded layer wherein the composition is varied throughout the thickness of the layer such that the refractive index of the graded layer varies from a low refractive index approximately matching the refractive index of the substrate at the interface of the graded layer and the substrate to a higher refractive index at the surface of the graded layer opposite the interface with the substrate, and a second substantially homogeneous layer of a composition selected to have a refractive index which is approximately the square root of the product of the higher refractive index of the graded layer and the refractive index of the incident medium at the surface of the second layer opposite the interface of the second layer with the graded layer, having an optical thickness of approximately at least one quarter of a selected design wavelength.

Abstract: The present invention provides image display panels, spacer units for the same and methods for making and using the same. The spacer units include an assembly having at least one layer of generally parallel fibers which form passageways which permit the passage of energy therethrough between the emitter and the display of an image display panel. A sealing frame has a support which is positioned about and engages the periphery or side of the spacer, the emitter and the display. The sealing frame has a sealing material for providing an essentially sealed region between the spacer, emitter and display. Methods of making and using such spacer units in image display panels are also included in the present invention.

Abstract: The dehydrochlorination of 1,1,2,3,3-pentachloropropane to produce 1,2,3,3-tetrachloropropene is conducted using aqueous alkali metal hydroxide in the substantial absence of added ethanol.The 1,2,3,3-tetrachloropropene is recovered from the reaction mixture in the substantial absence of added ether. The preferred methods of recovery are steam distillation and flash distillation.

Abstract: A windshield for a head-up display system has a pair of opposing major surfaces that are nonparallel to one another in selected areas. Light rays directed toward the nonparallel area of the windshield are reflected from the outer and inner major surfaces of the windshield and directed toward the eye of the observer as parallel or superimposed light rays to eliminate ghost images when viewing images projected by the head-up display system through the windshield. The interlayer blank utilized to make the windshield has a non-uniform thickness profile with a tapered thickness positioned in the selected areas of the windshield.

Abstract: Described are novel 7-methylidene-5-oxo-furo fused naphthopyran compounds having certain substituents at the 2 position of the pyran ring. Also described are polymeric organic host materials that contain or that are coated with such compounds.