Isp Investments Inc.

Specialty Granules Investments LLC

Ingo B Joedicke

Derek J Small

Wade O Kemp, Iii

The invention provides a bright white refractory roofing granule, comprising a ceramic material formed from a substantially homogenous mixture of a ceramic-forming clay, sintering material, and optionally comprising silica particles, and other potential additives, said bright white refractory roofing granule having a total solar reflectance of at least 0.80 and a Hunter Color Lvalue of at least 85.0, together with processes for making and using the same.

Hyperbright white roofing granules with high solar reflectance

Roofing granules, methods for their preparation, having a Total Solar Reflectance of at least 25% on a substrate or carrier.

Roofing granules of enhanced solar reflectance

Use of internal gas-forming compound to adjust coating porosity to control copper release rates in algae-retardant roofing granule products.

Roofing granules

Algae-resistant roofing granules consisting of one or two coats of a fired semi-ceramic composition having a metallic copper powder which does not significantly affect the color tint strength of the pigment contained in the coatings.

Low pigments costs algae-retardant roofing granule products containing metallic copper

Colored roofing granules and methods for their preparations, having decorative metallic appearance and enhanced stability against discoloration of color containing a silica-encapsulated metallic flake or colored lamellar effect pigment distributed in an insolubilized alkali silicate coating.

Roofing granules with a decorative metallic appearance

Darkened headlap manufacturing process and product produced thereby

This invention relates to a color stable pigment composition for coating hard mineral granules employed for weather surfacing asphalt roofing and siding shingles. The composition is a 40-60% aqueous slurry of pigment containing ferrosoferric oxide and a silicate/clay mixture which is suitable for coating the surface of the mineral granules. The invention also pertains to a process for the manufacture of the coated granules, to the dry coated mineral granule product containing ferrosoferric oxide bonded in a silicate/clay matrix which is suitable for surfacing asphaltic shingles, to the dried composition containing from about 5 to about 50 wt. % total pigment in a silicate/clay matrix in which the pigment contains Fe,O,in a concentration of between about 2 and about 100% and to a Fe,O,pigment mixture per se.

Color stable pigment for granular surface coated roofing and siding shingles

Algae-resistant roofing granules coated with: a first coat consisting of a fired silicate-clay matrix containing cuprous oxide and zinc sulfide to provide a slow, long-term bimetallic copper and zinc ions release; and a second coat consisting of a fired silicate-clay matrix containing a pigment.

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Falling Waters, WV, United States of America

Ingo B Joedicke