Patent · US Expired

Carbon black, process for its production and its use

US6762236B2 · kind B2 · utility

3Cited by

1References

27Claims

0Family size

Assignee

Degussa AG · DE

Inventor

Burkhard Freund · Lechenich, DE

Key dates

Filing date	Feb 13, 2002
Grant date	Jul 13, 2004
Priority date	—
Expiry date	Nov 16, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/19
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Carbon black with a CTAB surface area from about 10 to 35 m2/g and a DBP absorption from about 40 to 180 ml/100 g, the &Dgr;D50 value being at least 340 nm. The carbon black may be produced in a furnace-black reactor from a liquid carbon-black raw material and gaseous carbon-black raw material injected into a constriction in the reactor. Compared to other forms of carbon black, the carbon blacks of the present invention have advantageous properties, such as improved dispersibility, and may be economically and conveniently used in rubber mixtures, particularly in those used to produce extrusion profiles.

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