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:
Sep. 19, 1978
Filed:
Mar. 14, 1977
Robert E Reusser, Bartlesville, OK (US);
Lew T Gray, Bartlesville, OK (US);
Oren L Marrs, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A pipe coating composition is provided having good crack resistance properties that consists essentially of about 50 to 70 wt. % mineral aggregate, about 15 to 35 wt. % finely divided mineral filler, about 5 to 20 wt. % asphalt, about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, about 0 to 7 wt. % of an oil, and about 0 to 0.5 wt. % of a fibrous material. Furthermore, the crack resistance of a pipe coating composition is dramatically improved by using an asphalt rubber composition in which the rubber is an epoxy-coupled radial teleblock copolymer as compared to a silicon tetrahalide-coupled radial teleblock copolymer of essentially the same structure.