Abstract: The present disclosure relates to solutions for forming a fluoropolymer coatings, comprising: i) an organic solvent, and dissolved therein ii) a fluoropolymer comprising repeat units arising from specific fluoroolefin, alkyl or aryl vinyl ether and alkenyl silane monomers. The present fluoropolymer solutions have long shelf stability life, minimal to no formation of insoluble residue or gel over the period between their manufacture and use, are of a viscosity that allows for facile filtration and so are substantially free from undesirable submicron size particles, have a dissolved polymer content such that the solutions are of utility in commercial single-coat coating processes, and afford fluoropolymer coatings on substrates that have excellent adhesion to the substrate during use and over the lifetime of the electronic device.

Abstract: The present disclosure relates to a photocrosslinkable fluoropolymer coating composition, a coating layer comprising a photocrosslinked fluoropolymer and a process for forming the coating layer. Coating layers comprising the crosslinked fluoropolymer have low dielectric constants, low water absorptivity, good adhesion to conventional electronic device substrates, and are able to be photoimaged so as to provide the very fine features needed for modern electronic devices.

Abstract: The present disclosure relates to solutions for forming a fluoropolymer coatings, comprising: i) an organic solvent, and dissolved therein ii) a fluoropolymer comprising repeat units arising from specific fluoroolefin, alkyl or aryl vinyl ether and alkenyl silane monomers. The present fluoropolymer solutions have long shelf stability life, minimal to no formation of insoluble residue or gel over the period between their manufacture and use, are of a viscosity that allows for facile filtration and so are substantially free from undesirable submicron size particles, have a dissolved polymer content such that the solutions are of utility in commercial single-coat coating processes, and afford fluoropolymer coatings on substrates that have excellent adhesion to the substrate during use and over the lifetime of the electronic device.

Abstract: The present disclosure relates to a passivation layer comprising a photocrosslinked fluoropolymer and a process for forming the layer. Passivation layers comprising the crosslinked fluoropolymer have low dielectric constants, low water absorptivity and are able to be photoimaged so as to provide the very fine features needed for modern electronic equipment.

Abstract: The present disclosure relates to a passivation layer comprising a photocrosslinked fluoropolymer and a process for forming the layer. Passivation layers comprising the crosslinked fluoropolymer have low dielectric constants, low water absorptivity and are able to be photoimaged so as to provide the very fine features needed for modern electronic equipment.

Abstract: This invention pertains to a novel perfluoroalkyl-crosslinked fluoropolymer with perfluoroether pendant groups. The perfluoroalkyl-crosslinked fluoropolymer hereof is particularly well-suited for use in chemically and thermally aggressive environments, in part by virtue of the highly stable perfluoroalkyl crosslink. The perfluroalkyl-crosslinked fluoropolymer hereof can be prepared by crosslinking in situ a crosslinkable precursor in the form of a shaped article. A crosslinkable precursor is a fluoropolymer having a dichloroamino-functionalized functionalized perfluoroether pendant group.

Abstract: This invention pertains to a novel fluoropolymer characterized by a dichloroamino-functionalized perfluoroether pendant group that terminates in —CF2NCl2. The polymer so formed is crosslinkable and useful for the preparation of shaped articles and photo-imaged coatings. The novel fluoropolymer can be thermally treated to form crosslinked fluoropolymers with highly stable perfluoroalkylene crosslinks. The novel fluoropolymer is conveniently prepared by treating a cyano-functionalized fluoropolymer with Cl—F.

Abstract: This invention pertains to a novel thermal process for converting a fluoropolymer having cyano-functionalized perfluoroether pendant groups into a novel perfluoroalkyl-crosslinked fluoropolymer having perfluoroether pendant groups. The process comprises heating the fluoropolymer having cyano-functionalized perfluoroether pendant groups in the presence of Cl—F to a temperature in the range of 200 to 300° C. The fluoropolymer having cyano-functionalized perfluoroether pendant groups can first be formed into a shaped article, and the shaped article then subject to treatment in situ with Cl—F.

Abstract: An electrode (31c) for fuel cell comprises: a catalyst carrier (110) that is an electrically-conductive carrier (130) with a catalyst (120) supported thereon; a first electrolyte resin (141); and a second electrolyte resin (142). The first electrolyte resin has oxygen permeability of less than 2.2×10?14 mol/(m s Pa) in an environment having temperature of 80 degrees Celsius and relative humidity of 50%. The second electrolyte resin has oxygen permeability of not less than 2.2×10?14 mol/(m s Pa) in the environment having temperature of 80 degrees Celsius and relative humidity of 50%.

Abstract: A cathode catalyst layer used for a polymer electrolyte fuel cell that includes an electrolyte membrane is provided. The cathode catalyst layer comprises a catalyst having weight of not greater than 0.3 mg/cm2 of a reaction surface of the cathode catalyst layer that is adjoining the electrolyte membrane; and an electrolyte resin having oxygen permeability of not less than 2.2*10?14 mol/m/s/Pa in an environment of temperature of 80 degrees Celsius and relative humidity of 50%.

Abstract: This invention pertains to an azo-crosslinked fluoropolymer with perfluoroether pendant groups. The polymer so formed is highly useful in the form of shaped articles with excellent chemical and thermal stability, including photoimaged coatings. The azo-crosslinked fluoropolymer hereof is advantageously formed by exposure to UV radiation of a fluorinated polymer having dichloroamino-functionalized perfluoroether pendant groups. In one embodiment, a fluorinated polymer having dichloroamino-functionalized perfluoroether pendant groups is formed into a shaped article that is then UV-treated in situ.

Abstract: This invention relates to certain photocrosslinkable fluoropolymers, processes for crosslinking the fluoropolymers using UV radiation, and the photocrosslinked fluoropolymers produced.

Abstract: This invention pertains to an azo-crosslinked fluoropolymer with perfluoroether pendant groups. The polymer so formed is highly useful in the form of shaped articles with excellent chemical and thermal stability, including photoimaged coatings. The azo-crosslinked fluoropolymer hereof is advantageously formed by exposure to UV radiation of a fluorinated polymer having dichloroamino-functionalized perfluoroether pendant groups. In one embodiment, a fluorinated polymer having dichloroamino-functionalized perfluoroether pendant groups is formed into a shaped article that is then UV-treated in situ.

Abstract: This invention pertains to a novel fluoropolymer characterized by a dichloroamino-functionalized perfluoroether pendant group that terminates in —CF2NCl2. The polymer so formed is crosslinkable and useful for the preparation of shaped articles and photo-imaged coatings. The novel fluoropolymer can be thermally treated to form crosslinked fluoropolymers with highly stable perfluoroalkylene crosslinks. The novel fluoropolymer is conveniently prepared by treating a cyano-functionalized fluoropolymer with Cl—F.

Abstract: This invention pertains to a novel thermal process for converting a fluoropolymer having cyano-functionalized perfluoroether pendant groups into a novel perfluoroalkyl-crosslinked fluoropolymer having perfluoroether pendant groups. The process comprises heating the fluoropolymer having cyano-functionalized perfluoroether pendant groups in the presence of Cl—F to a temperature in the range of 200 to 300° C. The fluoropolymer having cyano-functionalized perfluoroether pendant groups can first be formed into a shaped article, and the shaped article then subject to treatment in situ with Cl—F.

Abstract: This invention pertains to a thermal treatment process for converting azo crosslinks in an azo-crosslinked fluoropolymer having perfluoroether pendant groups to perfluoroalkyl crosslinks. The perfluoroalkyl crosslinks exhibit greater thermal and chemical stability than to the azo crosslinks. According to the treatment, an azo-crosslinked fluoropolymer having perfluoroether pendant groups is subject to heating in the temperature range of 300 to 350° C. in order to effect a high degree of conversion to the perfluoroalkyl-crosslinked fluoropolymer.

Abstract: This invention pertains to a novel perfluoroalkyl-crosslinked fluoropolymer with perfluoroether pendant groups. The perfluoroalkyl-crosslinked fluoropolymer hereof is particularly well-suited for use in chemically and thermally aggressive environments, in part by virtue of the highly stable perfluoroalkyl crosslink. The perfluroalkyl-crosslinked fluoropolymer hereof can be prepared by crosslinking in situ a crosslinkable precursor in the form of a shaped article. A crosslinkable precursor is a fluoropolymer having a dichloroamino-functionalized functionalized perfluoroether pendant group.

Abstract: This invention pertains to an imageable article comprising a substrate having a surface, and an imageable film disposed upon said surface, said imageable film comprising a solvent soluble fluoropolymer having dichloroamino-functionalized perfluoroether pendant groups. When subject to imagewise exposure to UV radiation, the solvent soluble fluoropolymer will undergo crosslinking to an azo-crosslinked fluoropolymer having perfluoroether pendant groups. Under imagewise exposure, some portions of the imageable film undergo crosslinking while other portions do not. The portions that do not, can be washed away, leaving behind an image on the substrate, thereby preparing the imaged article hereof.

Abstract: Amorphous hydrofluoroolefin telomers are prepared by a free-radical polymerization process conducted at high temperature and pressure in the presence of non-monomeric chain transfer agent.

Abstract: Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain hydrazide curatives. The hydrazide is of the general formula R1(C(O))nNHNHR2, wherein n is 1 or 2; R1 is NH2, NHNH2, NHR3, NR32, NHNHC(O)NH2, NHNHC(O)NHNH2, NHNHR2, or NHC(O)NHNH2; R2 is H, alkyl, aryl, heterocycle, CO2R3, C(O)R3, CH2R4, or C(O)R4; R3 is alkyl, aryl, heterocycle, or CH2R4; and R4 is a fluoroalkyl group.