Catalytic converter

US5482686A · kind A · utility

Inventors

• Alan R. Lebold · Niagara Falls, US
• John D. Ten Eyck · Lewiston, US

Key dates

• Filing date: Nov 18, 1994
• Grant date: Jan 9, 1996
• Expiry date: Nov 18, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/697
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A flexible, resilient, intumescent mat material comprising fiber, binder, and an intumescent agent which includes a mixture of unexpanded vermiculite and expandable graphite undergoes intumescence at a lower temperature, with an enhanced degree of expansion and with a lesser degree of contraction upon prolonged heating. The intumescent mat can be employed in catalytic converters for motor vehicles and as a firestop material.