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:
Nov. 10, 2015
Filed:
Jun. 09, 2011
Naoya Ichikawa, Kobe, JP;
Toshiaki Sakaki, Kobe, JP;
Lucksanaporn Tarachiwin, Nakhon Pathom, TH;
Kamalin Kanyawararak, Nakhon Pathom, TH;
Naoya Ichikawa, Kobe, JP;
Toshiaki Sakaki, Kobe, JP;
Lucksanaporn Tarachiwin, Nakhon Pathom, TH;
Kamalin Kanyawararak, Nakhon Pathom, TH;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-shi, JP;
Abstract
The present invention provides a modified natural rubber having a reduced tan δ, a method for producing the modified natural rubber, a rubber composition produced using the modified natural rubber, and a pneumatic tire produced using the rubber composition. The present invention also provides a modified natural rubber having a reduced tan δ, a method for producing the modified natural rubber, a rubber composition produced using the modified natural rubber and achieving good fuel economy and abrasion resistance at the same time, and a pneumatic tire produced using the rubber composition. The present invention relates to a modified natural rubber having a phosphorus content of 200 ppm or less and a total content of sodium and potassium of 350 ppm or less. The invention also relates to a modified natural rubber having a phosphorus content of 200 ppm or less and a nitrogen content of 0.2% by mass or less.