Patent · US Expired

Silica with homogeneous layer of silylating agent

US6887518B2 · kind B2 · utility

11Cited by

10References

22Claims

0Family size

Assignee

Wacker-Chemic GmbH · DE

Inventors

Herbert Barthel · Herzogenaurach, DE
Mario Heinemann · Burghausen, DE
August Altenbuchner · Oberndorf bei Salzburg, AT

Key dates

Filing date	Oct 1, 2002
Grant date	May 3, 2005
Priority date	—
Expiry date	Jan 23, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2995
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Silylated silica is prepared by silylating silica with an organosiloxane composed of A units of the formula (I)(R13SiO1/2) (I)and B units of the formulae (IIa-c)(R12SiO2/2), and/or (IIa)(R1SiO3/2), and/or (IIb)(SiO4/2) (IIc),optionally having 1 or 2 attached groups —X on Si atoms, where

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