Unimin Corporation

Specialty Granules Investments LLC

David D Kragten

Daniel E Rardon

Louis M Schlesinger

Robert Ratcliff

Ibezim Anazia

Christy Karr

Scott Van Remortel

Justin P Dunlap

Chris Capobianco

Scott VanRemortel

Jonathon MacBride

Derek Small

Jared Horner

Reclaimed roofing granules, roofing materials comprising reclaimed roofing granules, and methods for forming roofing granules are provided. A roofing granule comprises a roofing shingle waste core having a surface. The roofing shingle waste core comprises a base particle. The roofing shingle waste core comprises an asphalt residue. The asphalt residue covers at least a portion of the roofing shingle waste core. The roofing granule comprises a colored coating. The colored coating covers at least a portion of the asphalt residue.

Reclaimed roofing granules and related methods

This invention relates to coated roofing granules, roofing materials made therefrom, and methods of preparing such coated roofing granules. By coating roofing granules with an aqueous coating that includes water, a silicon-containing oligomer or polymer, and an acrylic resin, coated roofing granules can be prepared that exhibit reduced staining as compared to traditional roofing granules that are treated with petroleum oil.

Coated roofing granules, roofing materials made therefrom and methods of preparing coated roofing granules

An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or 'engineered' particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size 'engineered' powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially &#x201c;engineered&#x201d; ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.

Powder formed from mineral or rock material with controlled particle size distribution for thermal films

Methods of converting olivine to lizardite without formation of chrysotile or brucite are disclosed. The methods comprise heating a mixture of olivine, silica, water, and a caustic agent. The addition of silica allows for complete conversion of the olivine to lizardite through a more thermodynamically favorable reaction. The olivine and silica are preferably of small particle size to increase reactivity.

Synthesis of lizardite from olivine

The invention is directed to a process and method for forming synthetic hydroxysodalite from nepheline and feldspar and/or nepheline syenite. A caustic material such as a solution of sodium hydroxide is combined with the nepheline and feldspar and/or nepheline syenite to form the synthetic hydroxysodalite.

Preparation of hydroxysodalite

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Burnsville, NC, United States of America

David D Kragten