To provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions. Furthermore, it is an object to provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions, and containing a reduced amount of volatile organic solvent used. As a solution, an anti-rust composition containing a polybutene-based polymer, a wax having a melting point of 35? C. or higher, and a polyaniline-based polymer is provided.

To provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions. Furthermore, it is an object to provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions, and containing a reduced amount of volatile organic solvent used. As a solution, an anti-rust composition containing a polybutene-based polymer, a wax having a melting point of 35? C. or higher, and a polyaniline-based polymer is provided.

To provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions. Furthermore, it is an object to provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions, and containing a reduced amount of volatile organic solvent used. As a solution, an anti-rust composition containing a polybutene-based polymer, a wax having a melting point of 35 C. or higher, and a polyaniline-based polymer is provided.

To provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions. Furthermore, it is an object to provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions, and containing a reduced amount of volatile organic solvent used. As a solution, an anti-rust composition containing a polybutene-based polymer, a wax having a melting point of 35 C. or higher, and a polyaniline-based polymer is provided.

To provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions. Furthermore, it is an object to provide an anti-rust composition having all of coatability, handleability of a film to be formed, and long-term rust resistance under severe conditions, and containing a reduced amount of volatile organic solvent used. As a solution, an anti-rust composition containing a polybutene-based polymer, a wax having a melting point of 35 C. or higher, and a polyaniline-based polymer is provided.

A optical element includes a surface including a zinc sulfide layer; a coupling agent adhered to the zinc sulfide layer by a disulfide bond and including a hydrocarbon tail extending from the disulfide bond; and a polymer bonded to the hydrocarbon tail of the coupling agent by a covalent bond; wherein the polymer and the coupling agent are optically transparent in the long wavelength infrared (LWIR) region.

A optical element includes a surface including a zinc sulfide layer; a coupling agent adhered to the zinc sulfide layer by a disulfide bond and including a hydrocarbon tail extending from the disulfide bond; and a polymer bonded to the hydrocarbon tail of the coupling agent by a covalent bond; wherein the polymer and the coupling agent are optically transparent in the long wavelength infrared (LWIR) region.

A polymer film comprises a polymer composition containing (A) a cyclic olefin polymer and (B) a chlorine-containing polymer. The chlorine-containing polymer (B) may comprise a vinylidene chloride-series polymer. The cyclic olefin polymer (A) may comprise a cyclic olefin copolymer. The ratio of the chlorine-containing polymer (B) relative to 100 parts by weight of the cyclic olefin polymer (A) may be 0.5 to 60 parts by weight. The film has a moderate releasability from an electrolyte membrane and an electrode membrane of a polymer electrolyte fuel cell and a moderate adhesion to the electrolyte membrane and the electrode membrane and can adhere to a commonly-used substrate film without interposition of an adhesive layer such as an easily adhesive layer. The film is thus suitable as a release film for producing a membrane electrode assembly of a polymer electrolyte fuel cell.

A optical element includes a surface including a zinc sulfide layer; a coupling agent adhered to the zinc sulfide layer by a disulfide bond and including a hydrocarbon tail extending from the disulfide bond; and a polymer bonded to the hydrocarbon tail of the coupling agent by a covalent bond; wherein the polymer and the coupling agent are optically transparent in the long wavelength infrared (LWIR) region.

A optical element includes a surface including a zinc sulfide layer; a coupling agent adhered to the zinc sulfide layer by a disulfide bond and including a hydrocarbon tail extending from the disulfide bond; and a polymer bonded to the hydrocarbon tail of the coupling agent by a covalent bond; wherein the polymer and the coupling agent are optically transparent in the long wavelength infrared (LWIR) region.