Hydrous silica for rubber-reinforcing filler

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11208331
APP PUB NO 20210047191A1
SERIAL NO

16976709

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Abstract

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The present invention pertains to a hydrous silica for rubber-reinforcing filler, having a BET specific surface area ranging from 230 to 350 m2/g, and satisfies the following: a) the pore volume of 1.9 nm to 100 nm pore radius measured by the mercury press-in method (VHP-Hg) ranges from 1.40 to 2.00 cm3/g; b) total pore volume in the range of 1.6 nm to 100 nm pore radius by the nitrogen adsorption/desorption method (VN2) ranges from 1.60 to 2.20 cm3/g; and c) the pore volume ratio of (a) and (b) VHP-Hg/VN2 ranges from 0.70 to 0.95. This invention provides a hydrous silica capable of further improving reinforcing properties of a rubber, particularly the wear resistance by improving dispersibility of the hydrous silica in the rubber in addition to rubber reinforcing properties obtained by a high BET specific surface area.

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Patent Owner(s)

  • TOSOH SILICA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Imabeppu, Yuta Yamaguchi, JP 3 1
Kanemitsu, Hideo Yamaguchi, JP 2 1

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