The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2011
Filed:
Dec. 18, 2007
David C. Trumbore, Chicago, IL (US);
Edward R. Harrington, Toledo, OH (US);
Jason D. Guerra, Tinley Park, IL (US);
Donn R. Vermilion, Newark, OH (US);
David R. Jones, Iv, Brixey, MO (US);
Sue Ann Jones, Legal Representative, Brixey, MO (US);
David C. Trumbore, Chicago, IL (US);
Edward R. Harrington, Toledo, OH (US);
Jason D. Guerra, Tinley Park, IL (US);
Donn R. Vermilion, Newark, OH (US);
David R. Jones, IV, Brixey, MO (US);
Sue Ann Jones, legal representative, Brixey, MO (US);
Owens Corning Intellectual Capital, LLC, Toledo, OH (US);
Abstract
In a process of producing a roofing shingle coating asphalt from a low flashpoint asphalt feedstock, an asphalt feedstock which has a low flashpoint of from 490° F. (254° C.) to 540° F. (282° C.) is partially blown, and wax is added to the asphalt feedstock. The process produces a coating asphalt having a low melt viscosity of from 50 cps to 150 cps at 400° F. (204° C.), a softening point of from 190° F. (88° C.) to 235° F. (113° C.) and a penetration of at least 15 dmm at 77° F. (25° C.). In another embodiment, the process produces a roofing shingle coating asphalt having good weatherability from a poor weathering asphalt feedstock. In a further embodiment, the process produces roofing shingles including a filled coating containing a poor tear filler without sacrificing the tear strength of the shingles.