Abstract: A photodetector includes a semiconductor substrate; a light receiving part for signal detection and an infrared light receiving part which are formed in the semiconductor substrate and are covered at least by first color filters having a common color; and second color filters which overlap with the first color filters on the infrared light receiving part and are configured to block light in a wavelength range transmitting through the first color filters.

Abstract: The present invention aims to provide a composition having excellent hydrophilicity, water permeability, mechanical strength, chemical durability, and low-fouling property, and capable of producing a porous polymer membrane from which a hydrophilic agent is less likely to be eluted. The composition of the present invention includes a vinylidene fluoride resin and a copolymer (A) including a vinyl alcohol unit and a fluoromonomer unit.

Abstract: A binder, including a fluoropolymer, the fluoropolymer including a polymerization unit based on vinylidene fluoride and a polymerization unit based on a monomer having an amide group represented by —CO—NRR? (R and R? are the same as or different from each other and each represent a hydrogen atom or an alkyl group optionally having a substituent group) or an amide bond represented by —CO—NR?— (R? represents a hydrogen atom, an alkyl group optionally having a substituent group, or a phenyl group optionally having a substituent group) and having a solution viscosity of 10 to 20,000 mPa·s. Also disclosed is a positive electrode mixture and a negative electrode mixture containing the binder, a positive electrode, a negative electrode and a lithium ion secondary cell.

Abstract: The present invention provides a chlorotrifluoroethylene copolymer endowed with stress cracking resistance, chemical resistance and thermal stability. The present invention is a chlorotrifluoroethylene copolymer constituted of chlorotrifluoroethylene unit, tetrafluoroethylene unit and a monomer [A] unit derived from a monomer [A] copolymerizable with chlorotrifluoroethylene and tetrafluoroethylene, wherein the sum of chlorotrifluoroethylene unit and the tetrafluoroethylene unit amounts to 90 to 99.9 mole percent and the monomer [A] unit amounts to 0.1 to 10 mole percent.

Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.

Abstract: The present invention aims to provide a film having a high dielectric constant and a low dissipation factor. The high dielectric film of the present invention includes a vinylidene fluoride/tetrafluoroethylene copolymer (A) with a mole ratio (vinylidene fluoride)/(tetrafluoroethylene) of 95/5 to 80/20. The film includes an ?-crystal structure and a ?-crystal structure. The ratio of the ?-crystal structure is 50% or more.

Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.

Abstract: Provided is a film for a film capacitor in which electrical insulation, and especially electrical properties at high temperatures are improved while a high dielectric constant of a vinylidene fluoride resin is maintained. The film for a film capacitor includes a tetrafluoroethylene resin (a1) that includes a vinylidene fluoride unit and a tetrafluoroethylene unit in the vinylidene fluoride unit/tetrafluoroethylene unit ratio (mol %) of 0/100 to 49/51 as a film-forming resin (A).

Abstract: The present invention aims to provide a separator having a high ion conductivity and excellent durability, and a secondary battery. The present invention relates to a separator including a layer that includes a fluoropolymer including a polymer unit based on vinylidene fluoride and a polymer unit based on tetrafluoroethylene, and a porous membrane. The fluoropolymer includes 80.0 to 89.0 mol % of the polymer unit based on vinylidene fluoride in all the polymer units, and has a weight average molecular weight of 50000 to 2000000.

Abstract: The present invention provides an organosol composition that is stable even in the case that the PTFE particle content is high. The present invention relates to an organosol composition of PTFE particles, comprising PTFE particles (A), a polymer (B), and an organic solvent (S), wherein (1) the polymer (B) is soluble in the organic solvent (S), (2) the amount of the PTFE particles (A) is not lower than 50% by mass of the total amount of the PTFE particles (A) and the polymer (B), and (3) the precipitation ratio of the PTFE particles after 48 hours is not higher than 60% when the total solids concentration of the PTFE particles (A) and the polymer (B) is 5% by mass.

Abstract: A crosslinkable fluororubber composition containing: a fluororubber (A); and a fluororesin (B), wherein the fluororesin (B) is a copolymer (B1) consisting of tetrafluoroethylene units (a) and hexafluoropropylene units (b) or a copolymer (B2) containing tetrafluoroethylene units (a), hexafluoropropylene units (b), and polymerized units (c) derived from a monomer copolymerizable with tetrafluoroethylene and hexafluoropropylene, the copolymer (B1) satisfies the condition that the ratio (a)/(b) is (80.0 to 87.3)/(12.7 to 20.0) on a molar basis, and the copolymer (B2) satisfies the condition that the ratio (a)/(b) is (80.0 to 90.0)/(10.0 to 20.0) on a molar basis, and the ratio (c)/{(a)+(b)} is (0.1 to 10.0)/(90.0 to 99.9) on a molar basis.

Abstract: The present invention aims to provide an electrode mixture which shows little change in viscosity even after 24 hours from the preparation of the mixture and enables production of an electrode having a high electrode density and excellent flexibility and is capable of giving excellent electric properties to the resulting cell. The present invention relates to an electrode mixture including a powdery electrode material; a binder; and an organic solvent, the binder including polyvinylidene fluoride and a fluorine-containing polymer including a polymer unit based on vinylidene fluoride and a polymer unit based on tetrafluoroethylene, the fluorine-containing polymer including the polymer unit based on vinylidene fluoride in an amount of 80.0 to 90.0 mol % based on all the polymer units, the polyvinylidene fluoride having a number average molecular weight of 150,000 to 1,400,000.

Abstract: The present invention aims to provide an electrode mixture which shows little change in viscosity even after 24 hours from the preparation of the mixture and enables production of an electrode having a high electrode density and excellent flexibility and is capable of giving excellent electric properties to the resulting cell. The present invention relates to an electrode mixture including a powdery electrode material; a binder; and an organic solvent, the binder including a fluorine-containing polymer including a polymer unit based on vinylidene fluoride and a polymer unit based on tetrafluoroethylene, the fluorine-containing polymer including the polymer unit based on vinylidene fluoride in an amount of 80.0 to 89.0 mol % based on all the polymer units, and the organic solvent being N-methyl-2-pyrolidone and/or N,N-dimethylacetamide.

Abstract: An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E?, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.

Abstract: A tetrafluoroethylene/hexafluoropropylene copolymer has improved moldability in melt extrusion molding, especially with significant reduction of defects in high-speed extrusion coating of an electrical wire. The tetrafluoroethylene/hexafluoropropylene copolymer is obtained by polymerization of at least tetrafluoroethylene and hexafluoropropylene selected from the group consisting of tetrafluoroethylene, hexafluoropropylene and a third monomer without mixing with the resin which has the melting point with the difference of 20 degree C. and more from the melting point of the tetrafluoroethylene/hexafluoropropylene copolymer; and has a complex viscosity of from 2.0×I03 to 10.0×I03 Pa*s and a storage modulus of from 0.1 to 3.5 Pa*s in melt viscoelasticity measurement under the condition of atmosphere temperature of 310 degree C. and angular frequency of 0.01 radian/second. The tetrafluoroethylene/hexafluoropropylene copolymer can be used in an electrical wire as a coating on a conductive core.

Abstract: An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E?, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.

Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.

Abstract: The object of the present invention is to provide an automotive filler cap with excellent low adhesion property. The present invention relates to an automotive filler cap configured to be attached to a filler opening of an automobile, the automotive filler cap including a gasket configured to seal the filler opening by being pressed against the filler opening, the gasket being made of a composition that contains a fluororubber and a fluororesin, the fluororesin being precipitated on the surface of the gasket, the fluororesin comprising a copolymer that contains a polymerized unit based on tetrafluoroethylene and a polymerized unit based on hexafluoropropylene.

Abstract: An oil seal for automobiles including an elastic component having a seal lip portion. The elastic component consists of a composition containing fluororubber and fluororesin. The seal lip portion has protrusions at least on the surface thereof. The protrusions substantially consist of the fluororesin contained in the composition. The fluororesin is a copolymer containing a polymerized unit based on tetrafluoroethylene and a polymerized unit based on hexafluoropropylene.

Abstract: A binder, including a fluoropolymer, the fluoropolymer including a polymerization unit based on vinylidene fluoride and a polymerization unit based on a monomer having an amide group represented by —CO—NRR? (R and R? are the same as or different from each other and each represent a hydrogen atom or an alkyl group optionally having a substituent group) or an amide bond represented by —CO—NR?— (R? represents a hydrogen atom, an alkyl group optionally having a substituent group, or a phenyl group optionally having a substituent group) and having a solution viscosity of 10 to 20,000 mPa·s. Also disclosed is a positive electrode mixture and a negative electrode mixture containing the binder, a positive electrode, a negative electrode and a lithium ion secondary cell.