Abstract: Hollow microspheres produced by the present method each have a hollow interior evacuated of gases to a predetermined pressure. A reflective material layer coats the exterior of each microsphere and, optionally, an outer layer of a protective material is applied over the reflective material layer. Permeant gases are dissolved into glass or plastic frit particles prior to heating of the frit particles to form hollow microspheres having the permeant gases contained therein. The permeant gases are subsequently out-permeated in a non-permeant gas atmosphere to substantially evacuate the interior of each microsphere. The exterior layers of reflective material and protective material are then coated about each evacuated microsphere.

Abstract: Multilayered extruded thermoplastic profiles are disclosed. The profiles are useful for decorative extruded louvers exhibiting a polished metal-look. The metal-look is achieved by the use of a limited amount of powdered aluminum metal having particle size of 50 microns or less, combined with an effective amount of nacreous pigment. The invention provides a multi-layer extrudate having the appearance of polished metal in the appearance layer in combination with an opaque or clear base layer. The preferred embodiment is a co-extruded polyvinyl chloride.Preferably, the appearance layer comprises 100 weight parts of rigid polyvinyl chloride as the thermoplastic matrix, a combination of from 0.05 to about 4 parts by weight of aluminum particles having an average particle size of from 10-40 microns, from 0.1 to 5 weight parts of titanium dioxide coated mica pigment or colored version thereof, and optional organic or inorganic coloring pigment(s).

Abstract: A method for making an environmentally stable, fiber reinforced ceramic matrix composite member includes use as a bonding agent of a ceramic precursor which transforms upon heating to a ceramic phase. The ceramic phase bonds together discontinuous material comprising ceramic particles, and reinforcing fibers at a relatively low processing temperature.

Abstract: A method for forming biocompatible components from a stock of substantially completely consolidated material. The method includes the step of forming an incompletely consolidated stock from a powder. The substantially completely consolidated stock is then formed from the incompletely consolidated stock. Finally, the substantially completely consolidated stock is then machined to form the biocompatible component.

Abstract: Polyamide fibrous substrates which resist staining by acid dyes and discoloration upon exposure to UV light, and processes for preparing the same which comprise applying, at pH 2 to 10, a base-catalyzed condensation product formed by the reaction of a bis(hydroxyphenyl)sulfone with formaldehyde to give a product known as a resole.

Abstract: A composite cover material to be used for making an integrally foamed article comprises a permeable fabric (10) and a thin layer of latex foam (15) strongly bonded via bonding zone (17) to said fabric. The latex foam layer (15) is made by applying high molecular latex material such as rubbers or synthetic resins as coating to back surface (12) of said fabric, and permitting said latex material to foam and cure. The latex foam has relatively fine mechanical open cells (18) in its internal part and further finer open cells (20) near its outer surface skin (22) which is permeable by virtue of minute holes (21) formed therein. The skin (22), though permeable by minutes holes, can serve as substantially flat and smooth barrier surface against liquid foamable mixtures poured directly onto said skin for making body foam (25) so as to guide slidingly said mixtures therealong and also prevent substantial impregnation into said latex foam.

Abstract: A storage tank for compressed natural gas (CNG) comprises a hydroxy-phenoxyether polymermethane barrier liner and a fiber composite outer shell. The hydroxy-phenoxyether polymer has a methane transmission rate of not more than about 50 cc-mil/100 in.sup.2 -day (19.5 cm.sup.3 -mm/m.sup.2 -atm-day) at 25.degree. C. and 2000 psi (13,800 kPa) methane pressure.

Abstract: Disclosed is a rubber member for paper-feeding machine parts, such as rubber rollers, rubber belts and the like in copying machines and printers of computers, word processors, facsimile machines and the like, capable of exhibiting excellent smoothness and stability of paper transfer performance. The rubber member is a cured silicone rubber body obtained by curing a specific silicone rubber composition containing a silicone-based tackifier and a cured silicone rubber powder and is characterized by the specific values of the tear strength, ultimate elongation and rubber hardness.

Abstract: The present invention relates to a polymeric film in-line coated with polyamido-polyethyleneimine to render the film receptive to direct extrusion coating with other polymers or to ink adhesion and to a method of making the same. Additionally, the present invention relates to an oriented polymeric film which has been in-line coated with polyamido-polyethyleneimine so that it has anti-static properties for other packaging applications.

Abstract: An optical article comprising a layer of a resin having self-healing properties and scuff resistance, and an antireflection layer of a non-crystalline fluorine-containing polymer.

Abstract: A process for preparing film structures comprising phthalocyanine oligomers having metal coordinating atoms in adjacent rings connected along a central axis through oxygen atoms. The ligands on the outermost rings of the structures are hydrophilic. The preferred coordinating atom is germanium and the structures may be prepared on a Langmuir-Blodgett balance using phthalocyanine oligomers in which one of the outermost rings is connected to a hydrophobic ligand while the other outermost ring is connected to a hydrophilic ligand. The pH of the subphase in the trough of the balance is maintained at a pH of from about 2 to 6, and the hydrophobic ligand is converted to a hydrophilic ligand during the process of coating a substrate by passing it upward through the film on the subphase.

Abstract: A halogen-free flame-retardant bitumen composition with improved performance characteristics is described. The flame-retardant bitumen composition contains at least 45 weight percent bitumen, about 2 to 25 weight percent thermoplastic polymer, and about 15 to 35 weight percent of a mixture of flame-retardant compounds. The mixture of flame-retardant compounds comprises alumina trihydrate and/or magnesium hydroxide, at least 2 weight percent zinc borate, and, optionally, about 2 to 20 weight percent calcium carbonate of the final flame-retardant bitumen composition.

Abstract: A three-part laminate material for fabricating protective bags and cases which are used for storing and carrying items and equipment, the three parts being a hydrophilic layer for forming an inner liner which wicks moisture from the item, an open-cell foam middle layer integrally attached to the hydrophilic layer for floatation, impact resistance, and for receiving moisture from the hydrophilic layer, and a hydrophobic outer layer attached to the open-cell foam middle layer for preventing the penetration of liquid water and for allowing water vapor to evaporate therethrough.

Abstract: A composite laminated structure is provided which includes a thin copper or other conducting material laminated to a polyimide having a relatively high coefficient of thermal expansion which in turn is bonded to a polyimide which has a relatively low coefficient of thermal expansion (CTE). This polyimide is in turn bonded to a relatively thick base such as stainless steel. The thicknesses of the polyimide and copper and the specific coefficients of thermal expansion of all of the material are so selected that in the absence of support from the stainless steel the stresses between the various layers are balanced in such a way that the two layers of polyimide and the copper remain essentially flat. This allows for a stainless steel substrate to have a portion etched away or otherwise removed so as to form a hinge region; and when the stainless steel is removed, the remaining structure will remain essentially flat and not curl either toward the stainless steel or toward the copper.

Abstract: A multilayer plastic pipe having improved barrier action against diffusion of the substance being transported, particularly methanol-containing fuels, dimensional stability, and resistance to mechanical stress, is provided comprising:an inner layer and an outer layer, each of which comprise a polyamide-based molding composition, wherein the inner layer and outer layer may be the same or different, andat least one intermediate layer comprising a linear, crystalline polyester-based molding composition interposed between and bonding together the inner and outer layers.

Abstract: The present invention provides a magnetic recording medium such as a magnetic tape suitable for long play with the thickness of the magnetic tape bring less than or equal to 12.5 without degrading the electro-magnetic conversion characteristic of the head-tape contact characteristic of the magnetic tape. The magnetic tape comprises a non-magnetic film base of thickness dA and a magnetic layer on the non-magnetic film base of thickness dM with the ratio of dA/dM.ltoreq.3.6 and a cupping rate defined as a ratio (A/B.times.100%) of a height A of a curled tape to a width B of curled tape in the traversing direction of .ltoreq.10%. The non-magnetic film vase has a first Young's modulus Y(MD) is a longitudinal direction of the magnetic recording medium and a second Young's modulus Y(TD) in a traversing direction thereof, wherein the first and second Young's modulusli y(MD) and Y(TD) respectively satisfy inequalities (1), (2) defined as follows:Y(TD).gtoreq.Y(MD)/3+1000 (Kg/mm.sup.2) . . . (1)Y(TD).gtoreq.

Abstract: Systems are provided for the detection of hydrogen peroxide for determination of analytes, where a N-alkylated 3-oxyaniline derivative is covalently bonded to a bibulous support and the other component for forming an indamine dye may be non-covalently bound to the support. Upon passage of a transport medium across the support in the presence of hydrogen peroxide and a peroxidase, an indamine dye is formed. Where a limited amount of hydrogen peroxide is introduced at a site proximal to one end of the support, and the hydrogen peroxide migrates toward the other end, the distance of color development will be related to the amount of hydrogen peroxide, which can be correlated to the amount of analyte in a sample.

Abstract: A multilayer composite having improved chemical resistance and improved intimate holding between layers is provided comprising(A) a layer of a polyamide-based molding composition having a specified level of amino end groups, and(B) a molding composition comprising a blend of a linear crystalline polyester and a polymer having a specified level of reactive end groups other than epoxide groups.

Abstract: A vehicle window includes a glass ply with a layer of thermoset polyurethane over the outer face of the glass which inhibits Restrahlen Band reflection at 8-12 microns from the glass. The polyurethane layer may include an inner layer portion of relatively hard polyurethane and an outer layer of relatively soft polyurethane.

Abstract: An electrically conductive polyimide film having good physical properties and uniform electrical conductivity, prepared by coextruding at least two aromatic polyamic acid solutions, one of which contains a conductive carbon filler, to form a conductive multilayer polyimide film, e.g. a two-layer or three-layer polyimide film.