Abstract:
To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having a cured film which is excellent in weather resistance and which has few voids; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (X) composed of a composition (±) comprising a fluororesin (A) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (D), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (B), an acid anhydride (C1) or a compound (C2) having an alkoxysilyl group and an isocyanate group, and the curing agent (D), to obtain a kneaded product composed of the composition (±), and (b) a step of pulverizing the kneaded product to obtain the powder (X).
Abstract:
To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having a cured film which is excellent in weather resistance and which has few voids; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (X) composed of a composition (α) comprising a fluororesin (A) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (D), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (B), an acid anhydride (C1) or a compound (C2) having an alkoxysilyl group and an isocyanate group, and the curing agent (D), to obtain a kneaded product composed of the composition (α), and (b) a step of pulverizing the kneaded product to obtain the powder (X).
Abstract:
An atomizer having an antifouling structure and an electronic cigarette having the same are disclosed. The atomizer includes a device housing and an atomizing unit disposed inside the device housing. The device housing defines therein a liquid storage chamber configured for storing tobacco liquid. The atomizing unit is configured for atomizing the tobacco liquid to produce an aerosol. The device housing further includes an aerosol channel in communication with the atomizing unit and is configured for expelling the aerosol. The antifouling structure mainly includes a hydrophobic oleophobic surface or super oleophobic surface formed on an inner wall of a member forming the aerosol channel or the liquid storage chamber. The antifouling structure prevents condensed droplets from accumulating and adhering to the inner wall of the aerosol channel or the liquid storage chamber, thereby avoiding users inhaling the condensed droplets into their mouths when smoking next time.
Abstract:
A coating material composition include a hydroxyl group-containing acrylic resin, a fluororesin, and light diffusive particles, and the hydroxyl group-containing acrylic resin has a weight-average molecular weight in a range of 10,000 to 30,000 and a hydroxyl value in a range of 14 to 70, wherein a mass ratio of the fluororesin to the hydroxyl group-containing acrylic resin (the fluororesin/the hydroxyl group-containing acrylic resin) is in a range of 5/95 to 50/50. The coating material composition can provide the light diffusing properties capable of uniformly diffusing light while effectively masking a light source image.
Abstract:
To provide a powder coating material capable of forming a coating film excellent in acid resistance, weather resistance and stain resistance; and a coated article having a coating film formed from the powder coating material. A powder coating material (I) containing a powder (X1) composed of a composition (X1) comprising a fluororesin (A1) and the following anti-staining agent (B); and a powder coating material (II) comprising a powder (X2) composed of a composition (X2) containing a fluororesin (A1), and a powder (Y) composed of a composition (Y) containing a resin (A2) other than a fluororesin, wherein at least one of the composition (X2) and the composition (Y) contains the following anti-staining agent (B). The anti-staining agent is a fluorinated surfactant (B1) or a salt (B2). The salt is a salt of an organic sulfonic acid ion, an organic carboxylic acid ion or an organic phosphoric acid ester ion, with an alkali metal ion, an alkaline earth metal ion, an amphoteric metal ion or an organic ammonium ion.
Abstract:
An atomizer having an antifouling structure and an electronic cigarette having the same are disclosed. The atomizer includes a device housing and an atomizing unit disposed inside the device housing. The device housing defines therein a liquid storage chamber configured for storing tobacco liquid. The atomizing unit is configured for atomizing the tobacco liquid to produce an aerosol. The device housing further includes an aerosol channel in communication with the atomizing unit and is configured for expelling the aerosol. The antifouling structure mainly includes a hydrophobic oleophobic surface or super oleophobic surface formed on an inner wall of a member forming the aerosol channel or the liquid storage chamber. The antifouling structure prevents condensed droplets from accumulating and adhering to the inner wall of the aerosol channel or the liquid storage chamber, thereby avoiding users inhaling the condensed droplets into their mouths when smoking next time.
Abstract:
To provide a fluorinated resin composition which is capable of forming a resin film excellent in moist heat resistance and solar reflectance. The fluorinated resin composition comprises composite particles, a fluorinated polymer and a liquid medium, wherein the composite particles are a composite having a part or whole of the surface of aluminum particles coated with at least one member selected from the group consisting of an acrylic resin and silica; the total coating amount of the acrylic resin and silica is from 6 to 25 parts by mass per 100 parts by mass of the aluminum particles; and the water surface diffusion area is from 14,000 to 27,000 cm 2 /g.
Abstract:
To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having a cured film which is excellent in weather resistance and which has few voids; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (X) composed of a composition (±) comprising a fluororesin (A) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (D), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (B), an acid anhydride (C1) or a compound (C2) having an alkoxysilyl group and an isocyanate group, and the curing agent (D), to obtain a kneaded product composed of the composition (±), and (b) a step of pulverizing the kneaded product to obtain the powder (X).
Abstract:
The present invention aims to provide a nonionic surfactant composition capable of providing an aqueous dispersion that has excellent mechanical stability and storage stability, is less viscous at high temperatures and high concentrations, and is less likely to give off an odor during drying and firing. The present invention relates to a nonionic surfactant composition including: a nonionic surfactant that comprises a molecule having a C10-C22 alkyl group and/or alkenyl group as a hydrophobic group, a polyoxyalkylene chain as a hydrophilic group, no aromatic ring, no C9-C14 alkyl group derived from an alcohol that is produced from a higher olefin derived from a mixture of propylene and butene through an oxo process, and no C13 alkyl group derived from an alcohol that is produced from a higher olefin derived from a propylene tetramer through an oxo process, wherein the nonionic surfactant has a hydrodynamic radius of 5.0 to 8.0 nm at 40°C in an aqueous solution in which a nonionic surfactant concentration is 0.1 kg/L in the nonionic surfactant composition, the radius being measured by a dynamic light scattering method.
Abstract:
The present invention provides a composition which is able to form a layer having excellent surface slip property and friction durability in addition to water-repellency, oil-repellency and antifouling property. The present invention provides a surface-treatment composition comprising (A) at least one fluorine-containing polymer having a curable moiety, and (B) at least one silicon-containing polymer having a curable moiety.