Carbon black pair with different particle size and improved rubb

Details Carbon black pair with different particle size and improved rubb Carbon black pair with different particle size and improved rubb

1993-09-02

1995-07-04

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

514492, 514493, 514495, 106472, 106475, C08K 300

Patent

active

054300878

ABSTRACT:
A carbon black system for manufacturing rubber comprises a pair of carbon blacks having the same structure, a fumed silica and a silane coupler. One of the pairs of carbon blacks has an Iodine Adsorption No. of less than 115 and the other pair of carbon blacks has an Iodine Adsorption No. of greater than 115. A rubber composition comprises a rubber selected from a group of polar and nonpolar rubbers, a carbon black system comprising a pair of furnace carbon blacks with both of the pairs of carbon blacks having the same structure, a fumed silica and silane coupler. One of the pairs of carbon blacks has an Iodine Adsorption No. of less than 115 and the other pair has an Iodine Adsorption No. of greater than 115. The carbon black system is from about 40 parts per hundred to about 80 parts per hundred of the rubber. The ratio of either pair of carbon blacks to the other in the rubber does not exceed 3:1.

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Polysar Book (probably late 1970, early 1980) "Applications for Krynac Oil Resistant Rubbers".
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Hycar.RTM. Elastomers "Pipe Wiper Elements".
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