Patent · US Expired

Carbon black

US6391274B1 · kind B1 · utility

26Cited by

0References

8Claims

0Family size

Assignee

Degussa-Huels AG · DE

Inventors

Conny Vogler · Bornheim, DE
Frank Forster · Oberkirch, DE
Karl Vogel · Bad Vilbel, DE
Burkhard Freund · Lechenich, DE

Key dates

Filing date	Sep 3, 1999
Grant date	May 21, 2002
Priority date	—
Expiry date	Sep 3, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/19
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Carbon black characterized by a STSA surface of between 20 and 180 m2/g, a 24M4-DBP absorption of between 40 and 140 ml/100 g, a specific BET surface of between 20 and 250 m2/g, a content of 0.01 to 20 wt. % of silicon, referred to its overall weight, and a tan &dgr;0/tan &dgr;60 ratio greater than 3.37−0.0068 STSA is produced by mixing silicon-containing compounds with the carbon black raw materials in the oxidative pyrolysis of the carbon black raw materials and optionally using carbon black oil as fuel. The carbon black can be used as a filler in rubber mixtures, preferably for tires.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.