Novel mineral composition

a mineral composition and mineral technology, applied in the field of mineral compositions, can solve the problems of dna modification (mutagenesis), damage to cellular structures (especially membranes), and both essential and non-essential metals

Inactive Publication Date: 2007-05-10
WHITAKER ROBERT H +1
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Benefits of technology

[0014] In accordance with this invention, and in one embodiment thereof, there is provided a mineral composition comprised of at least about 90 weight percent of headlap granules, at least about 50 weight percent of calcium carbonate, from about 0.1 to about 1.0 weight percent of a pigmented material, less than about 100 parts per million of a metal

Problems solved by technology

Granules made from such coal slag often contain substantial amounts of toxic metals, such as, e.g., arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver.
However, at levels exceeding these requirements, both essential and non-essential metals can disturb metabolism by binding non-specifically to biomolecules and by inflicting oxidative damage du

Method used

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examples

[0149] The following examples are used to illustrate the claimed invention but are not to be deemed limitative thereof. Unless otherwise specified, all parts are by weight, and all temperatures are in degrees Celsius.

[0150] In each of the following examples, headlap granules were used to make a sample shingle, and the sample shingle was then tested for granule adhesion in accordance with ASTM Standard Test 4977-3. The procedure for making the test samples is described hereinbelow.

[0151] The test samples used to determine the adhesive characteristics of the coated limestone granule particles were constructed using a petroleum-based roofing asphalt manufactured by the Hunt Refining Company of Tuscaloosa, Alabama. This asphalt had been oxidized by blowing with air at a temperature of approximately 500 degrees Fahrenheit, to achieve a final Ring & Ball Softening Point of 215 degrees Fahrenheit (as determined by ASTM D 36) and had a Needle Penetration of between 15 decimillimeters at 7...

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Abstract

A mineral composition that contains at least about 90 weight percent of headlap granules, at least about 50 weight percent of calcium carbonate, and from about 0.1 to about 1.0 weight percent of a pigmented material. The pigmented material contains from about 10 to about 35 weight percent of pigment and from about 90 to about 65 weight percent of a resin. The mineral composition has superior adhesion properties; when it is tested in accordance with ASTM Standard Test D 4977-03, it loses less than 5 grams of material.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATION [0001] This patent application is a continuation-in-part of applicant's copending patent application Ser. No. 11 / 266,833, filed on Nov. 4, 2005.FIELD OF THE INVENTION [0002] A mineral composition comprised of at least 50 weight percent of calcium carbonate and from about 0.1 to about 1 weight percent of a pigmented material; the composition has superior granule adhesion properties as measured by ASTM Standard Test D 4977-03. BACKGROUND OF THE INVENTION [0003] Roofing shingles are comprised of a headlap portion and a butt portion; granules are often used in the headlap portion. Reference may be had, e.g., to U.S. Pat. No. 3,921,358 (a composite asphalt-impregnated felt roofing shingle comprising a rectangular sheet having a headlap portion and a butt portion), 4,717,614 (a shingle whose headlap portion is coated with a layer of asphaltic material), 4,900,589 (a process for applying granules to a moving sheet having a headlap area and a bu...

Claims

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Application Information

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IPC IPC(8): E04D7/00
CPCC04B18/02Y10T428/2438C04B14/022C04B14/28C04B20/1029C04B20/04C04B20/1022C04B20/104C04B2103/54
Inventor WHITAKER, ROBERT H.BRANN, RICHARD W.
Owner WHITAKER ROBERT H
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