Process for Producing Rigid Polyurethane Foam
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United States of America Patent
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Issued Date -
Mar 13, 2008
app pub date -
Sep 30, 2005
filing date -
Sep 30, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides a manufacturing method of a rigid polyurethane foam for a heat insulation material that satisfies performance required for practical use, such as a low thermal conductivity over a long period, and excellent adhesiveness and excellent dimensional stability under a low temperature environment. The manufacturing method of a rigid polyurethane foam for a heat insulation material, which is formed from blowing and molding using a mixture that includes polyisocyanate, a polyol, and a blowing agent, wherein a polyol prepared by addition-polymerizing ethylene oxide and propylene oxide to an aromatic monoamine compound or an aromatic diol compound.
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