Reclaimed polyols prepared from lng insulation material waste polyurethane foam and polyurethane foams prepared using the same

Abstract

The present invention relates to a regenerated polyol and a method for producing the same, and as a regenerated polyol produced from polyurethane foam waste, the polyol has a hydroxyl value of 250 mgKOH / g to 1000 mgKOH / g and an amine value of less than 30 mgKOH / g. The rigid composite polyurethane foam waste for LNG insulation of the present invention is produced using a titanium-based catalyst at the time of depolymerization, and the regenerated polyol is produced without a process for removing the residual catalyst accompanying the depolymerization using a strong alkali such as potassium hydroxide as in the past, so that the process can be shortened and environmental hazards can be improved.

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