Cylinder head gasket

US4500100A · kind A · utility

Assignee

• Elring Dichtungswerke GmbH · DE

Inventors

• Rudolf Bindel · Waiblingen, DE
• Eugen Ruoff · Urach, DE

Key dates

• Filing date: Jul 24, 1984
• Grant date: Feb 19, 1985
• Expiry date: Jul 24, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S277/936
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A cylinder head gasket having at least one plate of soft material and at least one combustion chamber opening, said soft material including predominantly inorganic fibers and/or filling materials connected by binding means and including free OH groups, the soft material is mixed with a first impregnating material comprising a polysiloxane containing reactive hydrogen groups for reaction with the free OH groups of the fibers or filling materials and a second impregnating material which consists of a second polysiloxane of a higher degree of polymerization than the first polysiloxane and which polymerizes with itself as well as with the reactive hydrogen groups of the first polysiloxane, said second polysiloxane forming a stable siloxane structure having more branches than the first polysiloxane.