Patent · US Expired

Filler based on silicon dioxide, method for its preparation, and its use

US5852096A · kind A · utility

7Cited by

9References

19Claims

0Family size

Assignee

HERAEUS KULZER GMBH · DE

Inventors

Detlef Heindl · Weinbach, DE
Albert Erdrich · Bad Nauheim, DE

Key dates

Filing date	Mar 26, 1997
Grant date	Dec 22, 1998
Priority date	—
Expiry date	Mar 26, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/62
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Porous silicon dioxide glass is proposed as an inorganic filler for polymerizable materials, which has a particle size of 0.5-50 micrometers, a pore size of 20-120 nanometers, a pore volume of 200-1000 mm.sup.3 /g and a BET surface area of 10-100 m.sup.2 /g. The polymer products containing the filler are characterized by a very good resistance to abrasion.

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