摘要:
Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also provided.
摘要:
The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.
摘要:
Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also provided.
摘要:
Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).
摘要:
A method of marking a pavement surface is described comprising applying a pavement marking on the pavement surface. The pavement marking comprises transparent microspheres partially embedded in a binder wherein the micropheres comprise a lanthanide series oxide or yttrium oxide and aluminum oxide, in cobination with zirconia, titania, or mixtures thereof. Retroreflective articles including pavement marking tapes and reflective elements are also described.
摘要:
A method of patterning a deposit metal on a polymeric substrate is described. The method includes providing a polymeric film substrate having a major surface with a relief pattern having a recessed region and an adjacent raised region, depositing a first material onto the major surface of the polymeric film substrate to form a coated polymeric film substrate, forming a layer of a functionalizing material selectively onto the raised region of the coated polymeric film substrate to form a functionalized raised region and an unfunctionalized recessed region, and depositing electrolessly a deposit metal selectively on the unfunctionalized recessed region.
摘要:
A method of selectively and electrolessly depositing a metal onto a substrate having a metallic microstructured surface is disclosed. The method includes forming a self-assembled monolayer on the metallic microstructured surface, exposing the self-assembled monolayer to an electroless plating solution including a soluble form of a deposit metal, and depositing electrolessly the deposit metal selectively on the metallic microstructured surface. Articles formed from this method are also disclosed.
摘要:
Retrochromic articles have a retrochromic pattern comprising first and second viewable retroreflective regions, wherein at least one viewable retroreflective region comprises a plurality of intrinsically retrochromic beads. Methods for making such articles are also provided. Articles according to the present invention have covert security features, and may be used, for example, to authenticate security articles.
摘要:
Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising manganese oxides which demonstrate increased durability. Methods of making same are provided.
摘要:
The present invention provides a method of making a plurality of intrinsically retrochromic beads. The present invention further provides a kit comprising intrinsically retrochromic beads having different retroreflective colors.