摘要:
Disclosed herein is a method of preparing a polymer dispersion including combining a first solution with a second solution to provide an emulsion, and removing the first solvent from the emulsion to provide a dispersion including a plurality of polymer particles. The first solution includes a first solvent, a polyetherimide, a polycarbonate, or a combination of at least one of the foregoing, and optionally a nonionic surfactant. The second solution includes an aqueous solvent, and optionally a nonionic surfactant. The polymer particles have an average particle size (D50) of less than or equal to 20 micrometers. Also described are polyetherimide dispersions including a plurality of polyetherimide particles, wherein at least 90% of the particles have a particle size less than or equal to 14 micrometers, a nonionic surfactant, and an aqueous carrier.
摘要:
In an embodiment, a multilayer structure comprises a multiwall polycarbonate substrate having a first surface; and a blocking layer comprising one or both of an ultraviolet blocking layer and an infrared blocking layer located on the first surface; wherein the ultraviolet blocking layer optionally comprises zirconium oxide and an ultraviolet layer polymer matrix; and wherein the infrared blocking layer comprises 50 to 98 wt% of an infrared layer polymer matrix based on a total weight of the infrared blocking layer; and 2 to 40 wt% of an infrared blocking agent based on the total weight of the infrared blocking layer; wherein the infrared blocking agent comprises indium tin oxide, antimony tin oxide, fluorine tin oxide, tungsten oxide, or a combination comprising at least one of the foregoing.
摘要:
A varnish includes an isolated as-synthesized polyetherimide having a glass transition temperature of 180°C or more, a solvent in an amount effective for the polyetherimide to remain in solution at a selected temperature, and an inorganic particulate composition wherein the amount of polyetherimide, inorganic particulate composition, and solvent total 100 wt%. Also disclosed is a method of manufacturing the varnish, articles prepared from the varnish, and methods of manufacturing such articles.
摘要:
In an embodiment, an infrared blocking composition comprises 60 to 98 wt% of a curable prepolymer based on a total weight of the curable prepolymer and an infrared blocking agent; 2 to 40 wt% of the infrared blocking agent based on a total weight of the curable prepolymer and the infrared blocking agent; wherein the infrared blocking agent comprises indium tin oxide, antimony tin oxide, fluorine tin oxide, tungsten oxide, or a combination comprising at least one of the foregoing.