Method for producing rigid polyurethane foam, and rigid polyurethane foam
AssigneeAsahi Glass Company, Limited
InventorsKatsuhiko SHIMIZU, Teruhiko Yasuda, Hiroshi Wada
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Abstract
To provide a method for producing a rigid polyurethane foam, whereby it is possible to reduce the density without causing deterioration in dimensional stability, and a rigid polyurethane foam. A method for producing a rigid polyurethane foam, which comprises a step of reacting a polyol having a hydroxyl value of from 200 to 800 mgKOH/g with a polyisocyanate compound in the presence of an amino-modified silicone, a catalyst, a blowing agent and a surfactant.
Claims10
A method for producing a rigid polyurethane foam, which comprises a step of reacting a polyol having a hydroxyl value of from 200 to 300 mgKOH/g with a polyisocyanate compound in the presence of an amino-modified silicone, a catalyst, a blowing agent and a surfactant.
Dependencies are inferred from the claim text.