A structured material is provided that includes a substrate and a porous structured polymer layer disposed thereon. The porous structured polymer layer includes a plurality of voids, and has a high hemispherical reflectance a high a hemispherical thermal emittance. The structured material is thus particularly advantageous for cool-roof coatings, enabling surfaces coated by the material to stay cool, even under strong sunlight. The material can be produced via structuring of polymers in a mixture including a solvent and a non-solvent. Sequential evaporation of the solvent and the non-solvent provide a polymer layer with the plurality of voids.

Provided is a method that can produce a resin porous material from a water-insoluble polymer in a small number of steps while suppressing the formation of skin layers. The production method of a resin porous material disclosed herein includes preparing a solution of a water-insoluble polymer in a mixed solvent including a good solvent of the water-insoluble polymer and a poor solvent of the water-insoluble polymer, and drying the solution to remove the mixed solvent. The poor solvent has a higher boiling point than the good solvent. The drying the solution is performed using superheated water vapor.

The invention relates to a hollow glass microsphere and polymer composite having enhanced viscoelastic and rheological properties.

The claimed material relates to a fiber and polymer composite having enhanced modulus, viscoelastic and rheological properties.

Described herein are fluoropolymer compositions comprising a bis phthalonitrile-containing compound. In one embodiment, the bis phthalonitrile-containing compound is used to crosslink a dehydrohalogenated polymer, and optionally with a polyhydroxy curative. In another embodiment, the bis phthalonitrile-containing compound is added to a composition comprising (i) a fluorinated elastomeric gum, wherein the fluorinated elastomeric gum comprises a fluoropolymer having a cure-site and (ii) a peroxide curing system.

Provided is a highly stable non-aqueous dispersion even without surfactants. The present invention relates to a non-aqueous dispersion including a fluoropolymer and a non-aqueous solvent, the fluoropolymer in the non-aqueous dispersion having an average dispersed particle size of smaller than 1.0 μm, the fluoropolymer being present in an amount of 5 to 45% by mass, the non-aqueous solvent having a surface tension of 30 mN/m or lower, the non-aqueous dispersion containing a surfactant in an amount of less than 0.1% by mass relative to the fluoropolymer.

A molded article containing a crystal of a fluoropolymer. The fluoropolymer contains at least one selected from vinylidene fluoride/tetrafluoroethylene copolymer, polychlorotrifluoroethylene, an ethylene/tetrafluoroethylene copolymer, a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer and a tetrafluoroethylene/hexafluoropropylene copolymer. Further, the crystal is a nano-oriented crystal having a size of 300 nm or smaller.

The present invention relates to a processing aid of a non-fluorinated melt-processable polymer and a masterbatch for a processing aid, features the inclusion of a processing aid comprising a fluoropolymer forming clustered secondary particles each having a particle size of 2 μm to 2 mm and being a combination of primary fluoropolymer particles each having a diameter of 0.02 μm to 0.5 μm, and may accelerate the elimination of melt fracture despite the omission of an interfacial agent and decrease extrusion load upon process to thereby enhance productability.

The foamed sheet of the present invention is a foamed sheet obtained by crosslinking and foaming a polyvinylidene fluoride-based resin composition comprising a polyvinylidene fluoride-based resin, wherein the polyvinylidene fluoride-based resin comprises a vinylidene fluoride-hexafluoropropylene copolymer, a density of the foamed sheet is not more than 180 kg/cm.sup.3, and an average cell diameter of the foamed sheet is not less than 100 μm and not more than 500 μm. According to the present invention, a crosslinked polyvinylidene fluoride-based resin foamed sheet having both good flame retardance and good flexibility and a process for producing the foamed sheet are provided.

The claimed material relates to a fiber and polymer composite having enhanced modulus, viscoelastic and rheological properties.