POLYOL MIXTURE FOR PRODUCING RIGID POLYURETHANE FOAM
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United States of America Patent
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May 26, 2016
app pub date -
Jul 22, 2014
filing date -
Jul 22, 2014
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Abstract
A polyol mixture for producing a rigid polyurethane foam, the polyol mixture containing (A) a polyol component having a hydroxyl value of 100 mgKOH/g or more and 550 mgKOH/g or less; (B) a blowing agent containing one or more hydrohaloolefin-based blowing agents selected from the group consisting of trans-1-chloro-3,3,3-trifluoro-1-propene (B1) and cis-1,1,1,4,4,4-hexafluoro-2-butene (B2); (C) a catalyst containing an imidazole-based catalyst (C1) represented by the formula (I); (D) an organic acid containing one or more members selected from the group consisting of succinic acid and glutaric acid; and (E) a foam stabilizer. The polyurethane foam obtained by using a polyol mixture of the present invention can be suitably used as insulation materials for construction materials, refrigerators, refrigerating/freezing warehouses, bath tubs, and pipes; dew stoppers for houses, apartment houses, industrial pipes, and the like.
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