Oil-extended natural rubber and method for producing the same and rubber composition and tire using the same
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United States of America Patent
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Nov 8, 2016
Grant Date -
Sep 2, 2010
app pub date -
Jan 25, 2007
filing date -
Jan 31, 2006
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Abstract
This invention relates to an oil-extended natural rubber capable of improving a tensile strength and a wear resistance of a rubber composition, and more particularly to an oil-extended natural rubber formed by adding an emulsified extension oil to a natural rubber latex and further coagulating and drying them. An amount of the extension oil added is preferable to be within a range of 5-80% by mass based on a rubber component in the natural rubber latex and the oil-extended natural rubber is preferable to have a weight average molecular weight as converted to polystyrene of a rubber component of not less than 1,500,000.
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