329 results about "Infrared reflectivity" patented technology

A composition for a Coating System (paint) which forms an insulating material being designed to both reflect infrared radiation and have reduced thermal conductivity. The coating system may be either a single Thermal Coating or may be a Thermal Coating used in combination with a Thermal Primer. The Thermal Coating is formulated using conventional techniques and a resin used in paint manufacture, but utilizes primary pigments and extender mineral pigments which preferentially reflect in the infra red area of the solar spectrum. A method of characterizing particulate materials for their infra red reflectivity is described, which provides a means for preferential selection of particulate additives based on their relative visible light and infrared reflectivity. Additionally the incorporation of hollow micro-spheres is desired to reduce thermal conductivity. The Thermal Primer is designed to provide adhesion between the Thermal Coating and the substrate on which it is applied and uses conventional techniques to achieve those properties. However it has been found advantageous to incorporate hollow micro-spheres with low thermal conductivity, such as glass, ceramic or polymeric micro-spheres and / or an extender pigment with low thermal conductivity such as calcined clay to further reduce heat flow through the Coating System.

Roofing granules include a core having an average ultraviolet transmission of greater than sixty percent and an average near infrared reflectance of greater than sixty percent and a UV coating layer on the exterior surface. The coating provides UV opacity, while the core provides near infrared reflectance.

Disclosed is a heat-ray shielding material having excellent infrared reflectivity for near infrared rays for example and having excellent transparency for visible light. A heat-ray shielding material is formed comprising a substrate and a metal particle-containing layer, which contains at least one type of metal particle, on the substrate, wherein the metal particles comprise at least 60 numeric percent of flat plate-shaped metal particles having a substantially hexagonal shape or a substantially discoid shape, and the variation coefficient of the distribution of the distance between the centres of adjacent flat plate-shaped metal particles is at most 20%. Furthermore, the area ratio [(B / A)100], which is the ratio of the total value (B) of the area of the flat plate-shaped metal particles with respect to the area (A) of the substrate when the heat-ray shielding material is viewed from above, is preferably at least 20%.