COMPOSITION OF HIGH FLAME RETARDING POLYURETHANE FOAM AND INSULATOR COMPRISING THE SAME
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Aug 10, 2017
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Aug 11, 2016
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Disclosed herein is a highly flame retardant polyurethane spray foam composition. The composition includes 100 parts by weight to 200 parts by weight an isocyanate compound relative to 100 parts by weight of a resin mixture including 46 wt % to 75 wt % of a polyol, 10 wt % to 30 wt % of a blowing agent, and 5 wt % to 30 wt % of an additive, wherein the polyol includes 1 wt % to 10 wt % of a polyether polyol and 45 wt % to 65 wt % of an aromatic polyester polyol, and the aromatic polyester polyol has an average hydroxyl value of 250 mgKOH/g to 380 mgKOH/g.
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