Abstract:
The present invention relates to optical elements comprising fluorochemical surface treatments. The invention further relates to materials such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements. The fluorochemical surface treatment is substantially free of perfluoroalkyl groups having more than four carbon atoms. Preferably, the surface treatment is a polyfluropolyether-based compound comprising at least one polar group or polar group-containing organic radical.
Abstract:
In some embodiments, a sensor device includes a first electrode and a second electrode, each of the first and second electrodes being electrically coupled to an electrical bridge. The electrical bridge includes a conductive polymer having a first impedance state and a second impedance, the second impedance state being different than the first impedance sate. The sensor device also includes a latent base.
Abstract:
Electronic telecommunication articles are described comprising a layer of fluoropolymer composition comprising: an amorphous fluoropolymer comprising at least 80, 85, or 90% by weight of polymerized units perfluorinated monomers including one or more unsaturated perfluorinated alkyl ethers; and crystalline fluoropolymer; wherein the fluoropolymer composition lacks crosslinks of a chemical curing agent. Also described are methods of making a coated substrate, substrates comprising a fluoropolymer composition, and fluoropolymer compositions.
Abstract:
Electronic telecommunication article is described comprising a crosslinked fluoropolymer layer. The crosslinked fluoropolymer layer comprises the reaction product of a fluoropolymer and a fluorinated curing agent. Suitable fluorinated curing agent may comprise amine groups or at least one amine group in combination with one or more alkoxy silane groups. Also described are compositions comprising a fluoropolymer and a fluorinated curing agent and optionally fluorinated solvent; as well as methods of making coated substrates and articles.
Abstract:
Electronic telecommunication articles are described comprising a crosslinked fluoropolymer layer comprising fluoropolymer particles having a particle size of greater than 1 micron. In typical embodiments, the crosslinked fluoropolymer layer is a substrate, patterned (e.g. photoresist) layer, insulating layer, passivation layer, cladding, protective layer, or a combination thereof. Also describes are methods of making an electronic telecommunications article and method of forming a patterned fluoropolymer layer. The fluoropolymer preferably comprises at least 80, 85, or 90%by weight of polymerized units of perfluorinated monomers and cure sites selected from nitrile, iodine, bromine, and chlorine. Illustrative electronic communication articles include integrated circuits, printed circuit boards, antennas, and optical fiber cables. Fluoropolymer compositions are also described.
Abstract:
The present disclosure is directed to self-contained biological indicators wherein a single type of indicator is capable of being used for various sterilization conditions, including sterilization with steam and/or ethylene oxide. In some embodiments, a single type of biological indicator is capable of being used for different steam sterilization conditions having varied temperatures and sterilization cycles.
Abstract:
Pressure sensitive adhesives are provided comprising an adhesive copolymer which is a copolymer of a set of monomers comprising: a) 41.0-49.0 weight percent of isobornyl acrylate (IBOA); b) 0.0-4.5 weight percent of one or more basic-functional polar monomers comprising a polymerizable double bond; and c) 46.5-58.9 weight percent of one or more alkyl (meth)acrylate monomers, where the alkyl groups are selected from linear and branched alkyl groups comprising 2-12 carbon atoms and branched alkyl groups comprising 13-20 carbon atoms and wherein weight percentages are weight percent of all monofunctional monomers comprising the adhesive copolymer. In another aspect, the present disclosure provides tapes comprising the pressure sensitive adhesive according to the present disclosure. In some embodiments, the tapes are flexographic plate mounting tapes.
Abstract:
A method is provided. The method includes providing an article, the article including a nonwoven substrate having a copolymer grafted thereto, the copolymer including interpolymerized monomer units of a quaternary ammonium-containing ligand monomers; an amide monomer; an oxy monomer; and a coating on the nonwoven substrate, the coating including a plurality of test microorganisms, an enzyme or a second substrate; and contacting the article with a detection medium for a period of time.
Abstract:
The present disclosure relates to abrasive articles including conformable coatings, e.g. a hydrophilic coating, and polishing systems therefrom. The present disclosure provides an abrasive article including a ceramic body having an abrading surface and an opposed second surface, wherein the abrading surface of the ceramic body includes a plurality of engineered features each having a base and a distal end opposite the base and the ceramic body has a Mohs hardness of at least 7.5; a conformable metal oxide coating adjacent to and conforming to the plurality of engineered features, wherein the conformable metal oxide coating includes a first surface; and a conformable polar organic-metallic coating in contact with the first surface of the conformable metal oxide coating, wherein the conformable polar organic-metallic coating includes a chemical compound having at least one metal and an organic moiety having at least one polar functional group.
Abstract:
The present disclosure relates to a coating composition for reducing oily contamination from a chromium surface, wherein the composition comprises: a) a silane compound comprising a perfluoropolyether group; b) a tetra-functional silane; c) a multivalent metal salt; d) an acid; and e) a solvent comprising water and optionally, an organic solvent. In another aspect, the present disclosure is directed to a method of reducing oily contamination from a chromium surface, which comprises the steps of: a) providing a chromium surface; b) applying a coating composition as described above to the chromium surface thereby forming a layer of the coating composition adjacent to the chromium surface; and c) drying and/or curing the layer of the coating composition thereby forming a coating layer adjacent to the chromium surface. According to still another aspect, the present disclosure is directed to a coated article comprising a chromium surface and a coating layer adjacent to the chromium surface, wherein the coating layer comprises a layer of the coating composition as described above which has been dried and/or cured onto the chromium surface. In yet another aspect, the present disclosure relates to the use of a protective coating composition as described above for reducing oily contamination from a chromium surface.