Patent · US Expired

Inhomogeneous silicas for elastomer compounds

US6702887B2 · kind B2 · utility

10Cited by

3References

23Claims

0Family size

Assignee

Deguss AG · DE

Inventors

Stefan Uhrlandt · Niederkassel, DE
Ralf Schmoll · Gerolzhofen, DE
Anke Blume · Lechenich, DE
Detlef Luginsland · Cologne, DE

Key dates

Filing date	Jan 18, 2002
Grant date	Mar 9, 2004
Priority date	—
Expiry date	Jan 18, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2201/014
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A silica having a high degree of dispersibility and a low dust concentration contains at least two silica fractions that differ by at least 10% in at least one value of BET or CTAB surface area or DBP absorption.

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