Electroviscous fluids

US4702855A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• John Goossens · Cologne, DE
• Gunter Oppermann · Dietzenbach, DE
• Wolfgang Grape · Cologne, DE

Key dates

• Filing date: Oct 1, 1986
• Grant date: Oct 27, 1987
• Expiry date: Oct 1, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/185
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Electroviscous fluids are disclosed which are composed of aluminum silicates particles in an electrically non-conductive liquid and a suitable dispersing agent. The atomic ratio of Al/Si on the surface of the aluminum silicate lies within the range of 0.15 to 0.80.