Abstract:
A method is provided for obtaining crosslinked polymers having pendent sulfonic acid groups by crosslinking through the sulfonic acid groups or their precursors with aromatic crosslinkers or aromatic pendent crosslinking groups to form aromatic sulfones. Such crosslinked polymers may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells.
Abstract:
Fluoropolymeric substrates are modified by a photochemical process that includes at least one species having the formula (I) wherein: R represents hydrogen or an alkyl or cycloalkyl group having from 1 to 18 carbon atoms or an aryl, alkaryl, or aralkyl group having from 6 to 18 carbon atoms; X represents O or NH; and each of R 1 , R 2 , R 3 , and R 4 independently represents H, an alkyl group having from 1 to 18 carbon atoms, an alkenyl group having from 1 to 18 carbon atoms, an aryl group having from 6 to 10 carbon atoms, or any two of R, R 1 , R 2 , R 3 , and R 4 taken together represent an alkylene group having from 2 to 6 carbon atoms, with the proviso that at least one of R 1 and R 2 or at least one of R 3 and R 4 is not H.
Abstract translation:含氟聚合物底物通过光化学方法修饰,其包括至少一种具有式(I)的物质,其中:R表示氢或具有1至18个碳原子的烷基或环烷基或芳基,烷芳基或芳烷基,其具有6 至18个碳原子; X表示O或NH; R 1,R 2,R 3和R 4各自独立地表示H,具有1至18个碳原子的烷基,具有1至18个碳原子的烯基,具有6至10个碳原子的芳基或任何 R 1,R 2,R 3和R 4中的两个一起表示具有2至6个碳原子的亚烷基,条件是R 1和R 2中的至少一个或R 3和R 4中的至少一个不是H.
Abstract:
A process for modifying the surface of a polymeric substrate. The process includes digitally applying a photoreactive material comprising at least one photochemical electron donor to a region of a polymeric substrate and exposing at least a portion of that region to actinic radiation. The modified surface of the polymeric substrate may be bonded to one or more additional substrates, or may be coated with a fluid.
Abstract:
A multi-layer structure includes a fluoropolymer bonded to a substrate. The structure is prepared by exposing a bonding composition to actinic radiation, such as ultraviolet radiation, to form the bond. The bonding composition includes a light-absorbing compound and an electron donor. The bonding composition includes non-adhesive materials.
Abstract:
A sensor device. The sensor device includes a sterilant-responsive switch comprising: a circuit; a conductive polymer having a first state and a second state, and a polymeric binder; and wherein the sterilant-responsive switch connects the circuit in the first state and disconnects the circuit in the second state, and wherein the conductive polymer is capable of being converted from being in the first state to being in the second state when in contact with a sterilant.
Abstract:
Described herein is coating composition comprising (a) a partially fluorinated polymer, wherein the fluorinated polymer comprises a C-F bond adjacent to a methylene (-CH 2 -) unit or a hydrohalogenated methylene (-CHX- where X is F, Cl, Br, or I) unit along the polymer backbone; (b) a protected amino silane; (c) an alkoxysilane; and (d) a non-fluorinated solvent. Also described herein are substrates coated with said coating composition and heated to bond the coating composition to the substrate.
Abstract:
A film including: an organic polymeric substrate having a first major surface and a second major surface; an optional acrylic hardcoat layer disposed on the first major surface of the substrate; a siliceous primer layer disposed on the organic polymeric substrate or on the optional acrylic hardcoat layer, wherein the siliceous primer layer includes silica nanoparticles modified by an organic silane; and a superhydrophilic surface layer disposed on the siliceous primer layer, wherein the superhydrophilic surface layer includes hydrophilic-functional groups.
Abstract:
The present disclosure relates to an aqueous coating composition for imparting easy-to-clean properties to a siliceous substrate, comprising: a) polyacrylic acid having a weight average molecular weight (M w ) greater than 100,000 g/mol; b) an organic tetrafunctional alkoxysilane; c) phosphoric acid; and d) at least 70 wt% of water, based on the weight of the overall coating composition. In another aspect, the present disclosure is directed to a method of imparting easy-to-clean properties to a siliceous substrate, which comprises the steps of: a) providing a siliceous substrate; b) applying a coating composition described above to the siliceous substrate thereby forming a layer of the coating composition adjacent to the siliceous substrate; and c) drying and/or curing the layer of the coating composition thereby forming a coating layer adjacent to the siliceous substrate. According to still another aspect, the present disclosure is directed to a coated article comprising a siliceous substrate and a coating layer adjacent to the siliceous substrate, wherein the coating layer comprises a layer of the coating composition as described above which has been dried and/or cured onto the siliceous substrate.
Abstract:
The present disclosure relates to a protective coating composition for reducing oily contamination from a chromium surface, wherein the composition comprises: a) a first hydrophilic functional silane; b) optionally, a second hydrophilic functional silane distinct from the first hydrophilic functional silane; c) optionally, a multivalent metal salt; d) optionally a metal silicate; and e) a solvent comprising water. 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
Abstract:
Multilaycr barrier films and mcthods of making the films are providcd. The films include a smooth layer and a barrier layer dircctly disposcd on the smooth layer. In some cases, the smooth layer includes a thiol-ene material as a polymeric matrix material. In some cases, the films have a sandwich structure of barrier layer/smooth layer/substrate/smooth layer/barrier layer.