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US 2011/0253285 A1Published application
Natural rubber and method for producing the same, rubber composition and pneumatic tire using the same, modified natural rubber and method for producing the same, and rubber composition for tread or for covering carcass cord and pneumatic tire using the same
AssigneeSumitomo Rubber Industries, Ltd.
InventorsNaoya Ichikawa, Toshiaki Sakaki, Sumiko Miyazaki, Tomohiro Hosokawa, Ai Matsuura
Life of this patent
Estimating the term…
Abstract
The present invention relates to a natural rubber that contains 200 ppm or less of phosphorus.
Claims39
-39. (canceled)
A natural rubber containing 200 ppm or less of phosphorus.
A modified natural rubber,
- which is modified by graft-copolymerizing a natural rubber containing 200 ppm or less of phosphorus therein with an organic compound that has an unsaturated bond.
A modified natural rubber,
- which is modified by addition-reacting a thiol compound with a natural rubber that contains 200 ppm or less of phosphorus.
A modified natural rubber,
- which is modified by epoxidizing a natural rubber that contains 200 ppm or less of phosphorus.
A rubber composition for a tire tread, comprising:
- a rubber component with 5% by mass or more of a natural rubber that contains 200 ppm or less of phosphorus, and
- carbon black and/or a white filler.
A rubber composition for covering a carcass cord, comprising:
- a rubber component with 5% by mass or more of a natural rubber that contains 200 ppm or less of phosphorus, and
- carbon black and/or a white filler.
Dependencies are inferred from the claim text.