An adhesive layer can include a polymer blend of a first polymer and a second polymer. In an embodiment, the first polymer can be a modified fluoropolymer. In another embodiment, the second can be a non-fluorinated polymer. In a particular embodiment, the adhesive layer can include greater than 60 wt. % of the first polymer for the total weight of the polymer blend. A bearing can include the adhesive layer disposed over a substrate.

An adhesive layer can include a polymer blend of a first polymer and a second polymer. In an embodiment, the first polymer can be a modified fluoropolymer. In another embodiment, the second can be a non-fluorinated polymer. In a particular embodiment, the adhesive layer can include greater than 60 wt. % of the first polymer for the total weight of the polymer blend. A bearing can include the adhesive layer disposed over a substrate.

An adhesive layer can include a polymer blend of a first polymer and a second polymer. In an embodiment, the first polymer can be a modified fluoropolymer. In another embodiment, the second can be a non-fluorinated polymer. In a particular embodiment, the adhesive layer can include greater than 60 wt. % of the first polymer for the total weight of the polymer blend. A bearing can include the adhesive layer disposed over a substrate.

An adhesive suitable for use in security documents (for example, currency, passports, tickets, etc.) includes a plurality of polymers, that collectively exhibit tackification, resistance to aqueous agents, and solvent resistance, and a cross-linker selected to be activated to chemically react with one or more polymers of the plurality of polymers, at a temperature in a predetermined range of temperatures.

An adhesive suitable for use in security documents (for example, currency, passports, tickets, etc.) includes a plurality of polymers, that collectively exhibit tackification, resistance to aqueous agents, and solvent resistance, and a cross-linker selected to be activated to chemically react with one or more polymers of the plurality of polymers, at a temperature in a predetermined range of temperatures.

To provide a fluorinated elastic copolymer composition such that solubility of a fluorinated elastic copolymer in a solvent is excellent, the solvent is easily removed, and the solvent is easily available.

A fluorinated elastic copolymer composition comprising a fluorinated elastic copolymer having units based tetrafluoroethylene and units based on CF.sub.2=CFOR.sup.f1 (wherein R.sup.f1 is a C.sub.1-10 perfluoroalkyl group), and a fluorinated solvent having a perfluorohydrocarbon group, wherein the perfluorohydrocarbon group having the largest number of carbon atoms in the fluorinated solvent has from 3 to 7 carbon atoms, the fluorinated solvent has a boiling point of from 50 to 160 C., and the fluorinated solvent has a fluorine atom content (fluorine atom content (mass %)=(19number of fluorine atoms in the fluorinated solvent/molecular weight of the fluorinated solvent)100) of from 69 to 80 mass %.

To provide a fluorinated elastic copolymer composition such that solubility of a fluorinated elastic copolymer in a solvent is excellent, the solvent is easily removed, and the solvent is easily available.

A fluorinated elastic copolymer composition comprising a fluorinated elastic copolymer having units based tetrafluoroethylene and units based on CF.sub.2=CFOR.sup.f1 (wherein R.sup.f1 is a C.sub.1-10 perfluoroalkyl group), and a fluorinated solvent having a perfluorohydrocarbon group, wherein the perfluorohydrocarbon group having the largest number of carbon atoms in the fluorinated solvent has from 3 to 7 carbon atoms, the fluorinated solvent has a boiling point of from 50 to 160 C., and the fluorinated solvent has a fluorine atom content (fluorine atom content (mass %)=(19number of fluorine atoms in the fluorinated solvent/molecular weight of the fluorinated solvent)100) of from 69 to 80 mass %.

To provide a fluorinated elastic copolymer composition such that solubility of a fluorinated elastic copolymer in a solvent is excellent, the solvent is easily removed, and the solvent is easily available.

A fluorinated elastic copolymer composition comprising a fluorinated elastic copolymer having units based tetrafluoroethylene and units based on CF.sub.2=CFOR.sup.f1 (wherein R.sup.f1 is a C.sub.1-10 perfluoroalkyl group), and a fluorinated solvent having a perfluorohydrocarbon group, wherein the perfluorohydrocarbon group having the largest number of carbon atoms in the fluorinated solvent has from 3 to 7 carbon atoms, the fluorinated solvent has a boiling point of from 50 to 160 C., and the fluorinated solvent has a fluorine atom content (fluorine atom content (mass %)=(19number of fluorine atoms in the fluorinated solvent/molecular weight of the fluorinated solvent)100) of from 69 to 80 mass %.

To provide an adhesive film comprising a polyimide film and a fluorinated resin layer directly laminated, in which blisters (foaming) in an atmosphere corresponding to reflow soldering at high temperature are suppressed, and a flexible metal laminate. An adhesive film having a fluorinated resin layer containing a fluorinated copolymer (A) directly laminated on one side or both sides of a polyimide film, wherein the fluorinated copolymer (A) has a melting point of at least 280 C. and at most 320 C., is melt-moldable, and has at least one type of functional groups selected from the group consisting of a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, and the fluorinated resin layer has a thickness of from 1 to 20 m.

To provide an adhesive film comprising a polyimide film and a fluorinated resin layer directly laminated, in which blisters (foaming) in an atmosphere corresponding to reflow soldering at high temperature are suppressed, and a flexible metal laminate. An adhesive film having a fluorinated resin layer containing a fluorinated copolymer (A) directly laminated on one side or both sides of a polyimide film, wherein the fluorinated copolymer (A) has a melting point of at least 280 C. and at most 320 C., is melt-moldable, and has at least one type of functional groups selected from the group consisting of a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, and the fluorinated resin layer has a thickness of from 1 to 20 m.