Oxidizing carbon black and use of it in elastomers

Details Oxidizing carbon black and use of it in elastomers Oxidizing carbon black and use of it in elastomers

1976-04-19

1978-02-21

Marquis, Melvin I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106307, 260 4247, 260763, 423460, C08K 304, C09C 156

Patent

active

040751406

ABSTRACT:
A considerable reduction in modulus, as well as a significant increase in scorch time of a carbon black-containing rubber composition is obtained if the carbon black has been previously oxidized with a very diluted aqueous nitric acid containing only about 0.05 to 1 wt. % of HNO.sub.3 and dried at a temperature of about 400.degree. to 550.degree. F.

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