Abstract: This invention provides a composition comprising a refrigerant, the composition being non-flammable like R404A (R125/R134a/R143a=44/4/52 wt %), and having a refrigerating capacity that can replace that of R404A, a COP that is equal or superior to that of R404A, and a GWP of 1500 or less. Specifically, the invention provides a composition comprising a refrigerant, the refrigerant comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), and 1,1,1,2-tetrafluoroethane (R134a) at specific concentrations, the fluorinated hydrocarbons contained in the mixture having a specific composition ratio. This composition is for use as an alternative refrigerant for R22 or an alternative refrigerant for R404A.

Abstract: Provided is an alternative mixed refrigerant that has an acceptable concentration (OEL) of 400 ppm or more based on the entire composition, as calculated with the OEL of R1234yf as 200 ppm. A solution is to provide a composition containing a refrigerant that contains difluoromethane (R32), 2,3,3,3-tetrafluoropropene (R1234yf), and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)), wherein the three components have a mass ratio that falls within the region surrounded by lines a, b, c, d, and e that connect 5 points (points A, B, C, D, and E) of a ternary composition diagram that has the three components as vertices of FIG. 1.

Abstract: The present invention provides a composition containing a refrigerant having characteristics equal to or higher than those of R23. Specifically, the present invention provides a composition containing a refrigerant, wherein the refrigerant contains (a) at least one perfluorocarbon (PFC) selected from the group consisting of PFC-14, PFC-116, PFC-c216, FFC-218, PFC-c318, and PFC-31-10, and (b) an unsaturated compound.

Abstract: The present invention provides a refrigerant-containing composition by using a refrigerant that has a refrigerating capacity equivalent to that of widely used R404A, and a low GWP. Specifically, the present invention provides a composition that contains a refrigerant containing difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), 2,3,3,3-tetrafluropropene (R1234yf), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations.

Abstract: An object is to provide a refrigerant composition that is comprehensively excellent in various properties usually required of refrigerants, i.e., (1) low GWP, stability, and minimized temperature glide, as well as in essential properties required of alternative refrigerants for R404A, i.e., (2) refrigerating capacity, compressor outlet pressure, and COP that are substantially equivalent to those of R404A. In order to achieve this object, a composition containing a refrigerant is provided wherein the refrigerant contains difluoromethane (R32), trifluoroethylene (R1123), and 2,3,3,3-tetrafluoropropene (R1234yf) at a mass ratio that falls within the region surrounded by lines a, c and d, which connect the following three points in a ternary composition diagram of FIG. 1 whose vertices represent the three components: point A (R32/R1123/R1234yf=25.6/13.4/61.0 mass %); point B (R32/R1123/R1234yf=25.6/3.4/71.0 mass %); and point C (R32/R1123/R1234yf=3.9/36.5/59.6 mass %).

Abstract: Provided is an alternative mixed refrigerant that has an acceptable concentration (OEL) of 400 ppm or more based on the entire composition, as calculated with the OEL of R1234yf as 200 ppm. A solution is to provide a composition containing a refrigerant that contains difluoromethane (R32), 2,3,3,3-tetrafluoropropene (R1234yf), and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)), wherein the three components have a mass ratio that falls within the region surrounded by lines a, b, c, d, and e that connect 5 points (points A, B, C, D, and E) of a ternary composition diagram that has the three components as vertices of FIG. 1.

Abstract: This invention provides a composition comprising a refrigerant, the composition being non-flammable like R404A (R125/R134a/R143a=44/4/52 wt %), and having a refrigerating capacity that can replace that of R404A, a COP that is equal or superior to that of R404A, and a GWP of 1500 or less. Specifically, the invention provides a composition comprising a refrigerant, the refrigerant comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), and 1,1,1,2-tetrafluoroethane (R134a) at specific concentrations, the fluorinated hydrocarbons contained in the mixture having a specific composition ratio. This composition is for use as an alternative refrigerant for R22 or an alternative refrigerant for R404A.

Abstract: The invention provides a back sheet including a water-impermeable sheet and a film firmly bonded to each other and exhibiting excellent adhesiveness to an EVA encapsulant layer of a solar cell module even without corona discharge treatment on the film surface. The back sheet of the invention is a back sheet for solar cell module, including a water-impermeable sheet and a film. The film is disposed on at least one side of the water-impermeable sheet and is formed from a coating containing a fluorine-containing copolymer. The fluorine-containing copolymer contains a C2-C3 perhaloolefin structural unit, a vinyl acetate structural unit, a hydroxy-containing vinyl monomer structural unit, and a carboxy-containing monomer structural unit.

Abstract: Provided is a polymer capable of providing a coating film that has good initial adhesiveness to a base material and good adhesiveness thereto after a pressure cooker test, and has excellent abrasion resistance as determined by a falling sand abrasion test. The polymer includes a perhaloolefin unit, a vinyl ester unit that contains neither a hydroxy group nor an aromatic ring; and a hydroxy group-containing monomer unit. The polymer has a hydroxyl value of 110 mgKOH/g or greater.

Abstract: The invention provides a novel composition capable of providing a film or coat exhibiting excellent adhesiveness to a water-impermeable sheet and to an EVA encapsulant layer even without corona discharge treatment. The composition of the invention contains a fluorine-containing polymer and a polyol compound having a hydroxyl value of 10 to 300. The polyol compound is contained in an amount of not less than 0.1 mass % but less than 100 mass % relative to the fluorine-containing polymer.

Abstract: The invention provides a back sheet including a water-impermeable sheet and a film firmly bonded to each other and exhibiting excellent adhesiveness to an EVA encapsulant layer of a solar cell module even without corona discharge treatment on the film surface. The back sheet of the invention is a back sheet for solar cell module, including a water-impermeable sheet and a film. The film is disposed on at least one side of the water-impermeable sheet and is formed from a coating containing a fluorine-containing copolymer. The fluorine-containing copolymer contains a C2-C3 perhaloolefin structural unit, a vinyl acetate structural unit, a hydroxy-containing vinyl monomer structural unit, and a carboxy-containing monomer structural unit.

Abstract: A backsheet for a solar cell module, including a substrate sheet and a cured coating film formed from a coating material that contains a curable functional group-containing fluorinated polymer and an acrylic polymer.

Abstract: An object of the present invention is to provide a coating material that can form a coating film that has an excellent adherence for sealants in solar cell modules as well as an excellent resistance to blocking. Further objects are to provide this coating film, a solar cell module backsheet that has this coating film, and a solar cell module that has this coating film. The present invention relates to a coating material that contains a curable functional group-containing fluorinated polymer and a polyisocyanate compound derived from at least one isocyanate selected from the group consisting of xylylene diisocyanate and bis(isocyanatomethyl)cyclohexane.

Abstract: A backsheet for a solar cell module, including a substrate sheet and a cured coating film formed from a coating material that contains a curable functional group-containing fluorinated polymer and an acrylic polymer.

Abstract: An object of the present invention is to provide a backsheet, laminate, and solar cell module that can prevent the infiltration of water through a region of adhesion with the junction box. The present invention is a backsheet for a solar cell module, the backsheet having a water-impermeable sheet and a coating film formed on at least one side of the water-impermeable sheet, wherein the coating film is formed from a coating material containing a curable functional group-containing fluorinated polymer; a first surface treatment layer is formed on the coating film at least on a surface on an opposite side to the water-impermeable sheet; and the wetting index of the first surface treatment layer is at least 40 dyn/cm.

Abstract: An object of the present invention is to provide a coating material that can form a coating film that has an excellent adherence for sealants in solar cell modules as well as an excellent resistance to blocking. Further objects are to provide this coating film, a solar cell module backsheet that has this coating film, and a solar cell module that has this coating film. The present invention relates to a coating material that contains a curable functional group-containing fluorinated polymer and a polyisocyanate compound derived from at least one isocyanate selected from the group consisting of xylylene diisocyanate and bis(isocyanatomethyl)cyclohexane.

Abstract: Provided is a weatherable backsheet for solar cell modules which comprises a cured coating film and a water-impermeable sheet, the cured coating film having improved secondary adhesion to the water-impermeable sheet. The backsheet is produced using a coating composition having a prolonged usable life, and film blocking phenomenon during the production can be avoided. The weatherable backsheet for solar cell modules comprises a water-impermeable sheet and a cured coating film layer formed on at least one surface thereof, the coating film layer comprising a cross-linked product of a coating composition which comprises a hydroxylated fluoropolymer and silicon oxide particles having an average primary-particle diameter of 0.1 to 30 ?m.