Patent · US Active

Sulfur containing silica particle

US8333835B2 · kind B2 · utility

1Cited by

36References

13Claims

0Family size

Assignee

Nalco Company LLC · US

Inventors

Nicholas S. Ergang · Naperville, US
Bruce A. Keiser · Plainfield, US
Richard Mimna · Aurora, US

Key dates

Filing date	Sep 23, 2011
Grant date	Dec 18, 2012
Priority date	—
Expiry date	Sep 23, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K3/36
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A silica-containing composition is disclosed. The composition comprises a compound having the following formula: (SiO2)x(OH)yMzSaF. M comprises at least one metal or metalloid cation S is a sulfur-based species optionally exists and F is at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coverage of about 0.01 to about 100%. The molar ratio of y/x is equal to about 0.01 to about 0.5, the molar ratio of x/z is equal to about 0.5 to about 300 or from about 0.5 to about 100, and the molar ratio of a/z is about 0.5 to about 5.

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