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:
Oct. 10, 2000
Filed:
Mar. 24, 1998
Bridgestone Corporation, Tokyo, JP;
Abstract
Provided are a rubber composition improved in an anti-static property and a pneumatic tire using the same for its tread part, wherein the rubber composition comprises natural rubber and/or diene base synthetic rubber and a white filler as a filler, and further comprises an anionic anti-static agent or a polyoxyalkylene glycol compound represented by the flowing formulas (I), (II) or (III): ##STR1## wherein R.sup.1 and R.sup.3 each represent a linear or branched, saturated or unsaturated aliphatic hydrocarbon group having 1 to 21 carbon atoms, or an aryl group; R.sup.4 and R.sup.5 each represent a hydrogen atom, a linear or branched, saturated or unsaturated aliphatic hydrocarbon group having 1 to 21 carbon atoms, or an aryl group; R.sup.1 and R.sup.3 in the above formula (I), R.sup.4 and R.sup.3 in the above formula (II) and R.sup.4 and R.sup.5 in the above formula (III) in one same molecule may be the same as or different from each other; R.sup.2 is a methylene, ethylene, propylene or tetramethylene group, and all R.sup.2 's may be the same or different; and n is an integer of 100 or less.