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HP2502 polyester polyol |
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Phthalic anhydrider |
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HP2502 is a hydroxyl compound made by condensation of phthalic anhydrider & polyether polyols, suitable for rigid polyurethane foam prodction, PIR continuous and discontinuous board development. Improved flame retardancy and foam strength generally followed.
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Hydroxyl Number(mgKOH/g) 240¡À20 Water content, % 0.05max Acid Number(mgKOH/g) 3 max Viscosity(25 Centigrade,mpa.s) 8000~10000 Color(Hazen) 50 max |
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