Process for sealing ducts of a monolithic honeycomb body
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United States of America Patent
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-
Jul 18, 1995
Grant Date -
N/A
app pub date -
Nov 12, 1993
filing date -
Nov 12, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for frontal, alternate sealing of ducts in a ceramic honeycomb monolith includes temporarily sealing some ducts with a first, hardenable viscous composition; permanently sealing the then still vacant duct openings with a second hardenable, viscous composition. The first composition is removed during the course of hardening the second composition. The ceramic honeycomb monolith is for exhaust gas cleaning systems of internal combustion engines.
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