Abstract: Ballistic structure comprising a solid combination of a metal first layer and a second layer consisting of a composite fiber material containing fibers with a tensile strength of at least 2 GPa and a modulus of at least 20 GPa, based on polyethylene with a weight average molecular weight of at least 4 * 10.sup.5 and a thermoplastic binding agent shows good ballistic properties if a binding layer is applied between the first layer and the second layer, which binding layer contains a modified polyolefin.
Type:
Grant
Filed:
May 5, 1989
Date of Patent:
July 30, 1991
Assignee:
Stamicarbon B.V.
Inventors:
Peter Bruinink, Wilhelmus A. R. M. Pessers
Abstract: A metallized film has a substrate layer of a synthetic polymeric material, and on at least one surface thereof an adherent layer of an acrylic or methacrylic copolymer, the copolymer comprising(a) a comonomer selected from acrylic acid, methacrylic acid or a derivative of acrylic acid or methacrylic acid,(b) a copolymerizable sulphonated ethylenically unsaturated comonomer, and optionally(c) an additional comonomer, said comonomers (a) and (b) being present in the respective molar percentages in the ranges (a) 26 to 99% and (b) 1 to 50%.A metallic layer is on the surface of the at least one adherent layer, remote from the substrate.
Abstract: An article comprising a non-conductive substrate having a sub-micron thickness of an oxidizable metal coating thereon, and an oxidation enhancingly effective amount of a salt, e.g., from about 0.005 to about 25% by weight of salt, based on the weight of oxidizable metal, present on the oxidizable metal coating. Also disclosed is a related method of forming such article, comprising chemical vapor depositing the oxidizable metal coating on the substrate, applying the salt by contacting of the oxidizable metal-coated substrate with a salt solution, and drying of the salt solution on the oxidizable metal film to yield the product salt-doped, oxidizable metal-coated substrate article. When utilized in a form comprising fine-diameter substrate elements such as glass or ceramic filaments, the resulting product may be usefully employed as an "evanescent" chaff.
Type:
Grant
Filed:
December 11, 1989
Date of Patent:
July 23, 1991
Assignee:
Advanced Technology Materials, Inc.
Inventors:
Ward C. Stevens, Edward A. Sturm, Bruce C. Roman
Abstract: A paint film structure formed on an aluminum member or aluminum alloy member has a first paint film layer formed on a surface of the aluminum member or aluminum alloy member and a second paint film layer formed on a surface of the first paint film layer, the first and second paint film layers being chiefly composed of a colloidal silica, an organoalkoxysilane part hydrolysis condensation product, and a polymer or copolymer of an unsaturated ethylenic monomer, polymeric content or copolymeric content of the unsaturated ethylenic monomer in the first paint film layer being less than polymeric content or copolymeric content of the unsaturated ethylenic monomer in the second paint film layer.
Abstract: Water-compatible compositions containing resins that contain nitrogen but are substantially free of mercaptan groups, primary amino groups, and secondary amino groups. The compositions are heat-cured at low temperatures using bis-maleimides or sparingly-soluble corrosion-inhibiting chromate pigments. The compositions preferably are used for cathodic electrophoretically-depositable coating applications.
Type:
Grant
Filed:
November 16, 1989
Date of Patent:
July 23, 1991
Assignee:
Minnesota Mining & Manufacturing Company
Inventors:
Thomas H. Wilson, Jr., Alphonsus V. Pocius
Abstract: A laminate insulating jacketing material having a layer of poly(vinyl chloride) bonded to a layer of aluminum foil having superior insulation jacketing properties, to be applied over pipe, tank or equipment insulation.
Abstract: Sandwich panels, i.e., laminates which comprise two metal sheets with a filled, reinforced resin core between and bonded to the metal sheets, are useful for structural and other uses. Combinations of metal sheets, resins, fillers, and reinforcement bonded together in the sandwich structure provided a laminate having a flexural modulus of at least 2.5 million psi, a rigidity index of at least about 2,000 and other unique properties which enable the laminates to be particularly useful for thin wall truck trailer body construction, as well as other uses. A rigidity index and a falling ball impact test for sandwich structures and panels are used to characterize the properties of these sandwich laminates. Methods of making the above sandwich laminates and means for joining the sandwich laminates and panels are disclosed, which provide for their particular usefulness in truck trailer body construction, as well as other structural and non-structural uses.
Abstract: The present invention relates to electrically conductive pigmentary composites comprised of electrically nonconductive pigmentary metal oxide substrates to which is adhered an electrically conductive polymer material.
Abstract: For waterproofing civil engineering structures using flexible, sheet-like waterproofing laminates which can be applied without primer to structures at temperatures of 40.degree. F. and above. Primerless waterproofing laminates having a bituminous layer comprising 29 to 54 weight percent asphalt, 25 to 50 weight percent process oil, and 16 to 35 weight percent thermoplastic block polymer of styrene and butandiene monomers.
Type:
Grant
Filed:
January 10, 1989
Date of Patent:
July 2, 1991
Assignee:
W. R. Grace & Co.-Conn.
Inventors:
Lawrence J. Kindt, James M. Gaidis, Jay S. Kellett
Abstract: A functional ZnSe.sub.1-x Te.sub.x :H film having a high doping efficiency and with no substantial change in the characteristics upon light irradiation. Said film is characterized in that the Se/Te quantitative ratio is in the range from 3:7 to 1:9 by the atom number ratio, hydrogen atoms are contained in an amount of 1 to 4 atomic % and the ratio of the crystal grain domains per unit volume is in the range from 65 to 85% by volume. There are also provided improved p-type and n-type ZnSe.sub.1-x Te.sub.x :H:M films (M stands for a dopant) of high electroconductivity characterized in the foregoing way.These deposited films may be efficiently deposited even on a non-single crystal substrate made of metal, glass or synthetic resin with a high deposition rate.These films are suited for the preparation of a high functional device such as a photovoltaic element.
Abstract: Membranes are provided which minimize reflective cracking in the repair of roads. The membrane comprises a reinforcement along with a binder having a high modulus of elasticity and a binder having a low modulus of elasticity. The high modulus binder impregnates the reinforcement and is adhered to the distressed road whereas the low modulus of elasticity material is adhered to the impregnated reinforcement and is used in contact with the subsequently applied asphaltic overlay.
Type:
Grant
Filed:
September 15, 1988
Date of Patent:
June 25, 1991
Assignee:
Owens-Corning Fiberglas Corporation
Inventors:
Thomas R. Jacob, Leonard A. Stenger, William E. Uffner
Abstract: Anti-static conductive mechanical components of synthetic resin with a conductive membrane formed on the surface of the synthetic resin through evaporation. When static electricity is generated during the operation of the mechanical components, the conductive membrane, which can be used to ground the synthetic resin, quickly eliminates the static electricity. The equipment constructed from the mechanical components can thus prevent malfunctions caused by static electricity.
Abstract: A sheet of polymer material is secured between a pair of clamping members. The sheet is directed through a localized heated region to provide a localized heated portion of said sheet. A first one of said clamping members is pulled away from the second clamping members to stretch said sheet and create from the localized heated portion of said sheet a neck-down region. The neck-down region separates providing a pair of neck-down region portions and a reduced thickness portion or stretched portion of the sheet between said neck-down region portions. One of said neck-down regions propagates along unstretched portions of the sheet as the movable clamping member moves away from the fixed clamping member while the other neck-down region remains adjacent the fixed member. This propagating neck-down region portion of the sheet is kept within the localized heated region by moving the localized heated region at a rate related to the rate which unstretched material of the sheet is fed into the neck-down region portion.
Abstract: Porous plasma arc sprayed powder metal abradable materials used in knife edge labyrinth seals of gas turbine engines have their resistance to erosion improved when a thin ceramic surface layer containing fine aluminum particulate is applied. The fine equiaxed particulate and ceramic are applied as an aqueous liquid so that both the particulate and cermic matrix material fill the surface pores, without penetrating further into the powder metal material and thereby adversely affecting desirable abradability characteristics.
Abstract: A material for composite sliding surface bearings having a plastic sliding layer comprises a metallic backing layer and a sliding layer that is joined to the backing layer and consists of a matrix-forming fluorine-containing polymer, in which a metal powder having a high affinity to fluorine is finely dispersed. In order to reduce the friction torque and the wear rate, the fluorine-containing polymer contains metal fluoride and metal oxyfluoride and consists of monoclinally crystallized PVDF, amorphous PVDF and a novel polymer, which in an X-ray diffractogram prepared by CuK .alpha.-radiation has a sharp intensity peak at a double Bragg angle of 2.theta.=18.07.+-.0.03.degree. and has a melting range of 320.degree. to 350.degree. C. and is free of ortho-rhombically crystallized PVDF.
Type:
Grant
Filed:
May 2, 1989
Date of Patent:
June 18, 1991
Assignee:
Kolbenschmidt Aktiengesellschaft
Inventors:
Karl-Heinz Matucha, Thomas Steffens, Hans-Paul Baureis, Wolfgang Bickle, Jurgen Braus
Abstract: A material for composite sliding surface bearings having a plastic sliding layer comprises a metallic backing layer and a sliding layer that is joined to the backing layer and consists of a matrix-forming fluorine-containing polymer, in which a metal powder having a high affinity to fluorine is finely dispersed. In order to increase the life, a fluorine-containing polymer is provided, which in an X-ray diffractogram prepared by CuK.alpha.-radiation has a sharp intensity peak at a double Bragg angle of 2.theta.=18.07.+-.0.03.degree. and has a melting range of 320.degree. to 350.degree. C. and contains metal fluoride and metal oxyfluoride.
Type:
Grant
Filed:
May 2, 1989
Date of Patent:
June 18, 1991
Assignee:
Kolbenschmidt Aktiengesellschaft
Inventors:
Karl-Heinz Matucha, Thomas Steffens, Hans-Paul Baureis, Wolfgang Bickle, Jurgen Braus
Abstract: Sealing system for roofs by means of two successive sealing layers. The first sealing layer is mechanically attached to the support and the second, self-adhesive, sealing layer is attached to the first sealing layer by cold self-adhesion. The first sealing layer comprises sealing sheets made up by the assembling of one asphalt-base sheet reinforced by an armature and of a film of a polymer having a high tear resistance.
Abstract: A primer composition having a low VOC content and containing solvents, a film forming binder and pigments and the binder contains about(1) 30-65% by weight, based on the weight of the binder, of a hydroxyl containing polyester copolymer having a hydroxy number of about 100-300 and a number average molecular weight of about 300-3,000 and being the esterification product of an alkylene glycol, a branched chain polyol, a cycloaliphatic dicarboxylic acid, an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid or anhydride thereof;(2) 5-20% by weight, based on the weight of the binder, of a reactive plasticizer; and(3) 30-50% by weight, based on the weight of the binder, of a monomeric fully alkylated melamine formaldehyde crosslinking agent.
Abstract: A packaging material suitable for packaging moisture and oxygen-sensitive materials comprises a coated and metallized plastic film having low permeability to gases, moisture and light, which includes a polyolefin or regenerated cellulose film that is coated on one or both surfaces with one or more thin but smooth layers of a thermally stable coating, other than polyvinylidene chloride, and metallized over the coated surface or surfaces.
Abstract: A polyvinylidene fluoride product having at least one surface with improved adhesion to an incompatible polymer, said at least one surface covered with a porous polyvinylidene fluoride layer adhered thereto without a bonding intermediate, the process of forming the polyvinylidene fluoride product, and laminates thereof with non-adherent polymers.