摘要:
Time-release algae-resistant roofing granules have a base particle including an algaecide and an outer coating layer including another algaecide. The at least two algaecides are released over different predetermined periods. The outer layer protects the base particle from exposure to the environment for a predetermined period, then fails catastrophically so that the interior algaecide can be released.
摘要:
Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.
摘要:
A process for forming algae-resistant roofing shingles comprises producing algae-resistant granules, and adhering the granules to a shingle stock material. The algae-resistant roofing granules are produced by a process that includes coating mineral particles with a clay-silicate binder including a metal oxide algaecide and small organic particles. The particles are heated to cure the binder, and the organic particles pyrolyse to form pores in the coating. The release of the algaecide is controlled by the structure of the granules.
摘要:
Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.
摘要:
Algae-resistant roofing shingles are formed by extruding a mixture of mineral particles and a binder to form porous granule bodies, and algaecide is distributed in the pores to provide alqae-resistant granules, which are subsequently applied to roofing shingles. Release of the algaecide is controlled by the structure of the granules.
摘要:
Dark colored roofing granules include an inert base particle coated with a composition including a metal silicate, a non-clay latent heat reactant, and a dark colored but solar reflective prigment.
摘要:
A roofing product has a substrate having a binder layer and roofing granules on a majority of the binder layer, such that an exposed portion of the binder layer does not have the roofing granules. In addition, reflective particles may be located on the exposed portion of the binder layer. The reflective particles are smaller in size than the roofing granules, and the reflective particles have a solar reflectance of greater than 40%.
摘要:
Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by a colored infrared pigment, a light-interference platelet pigment, or a metal oxide.
摘要:
Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.
摘要:
Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.