초록 ▼

Low density flexible molded and slabstock foams are prepared by reacting a polyisocyanate with a polyol composition containing a mono-alcohol. The blowing of the foam is essentially with carbon dioxide generated from the reaction of water with isocyanate, and the reaction catalysts used in the prepa

Low density flexible molded and slabstock foams are prepared by reacting a polyisocyanate with a polyol composition containing a mono-alcohol. The blowing of the foam is essentially with carbon dioxide generated from the reaction of water with isocyanate, and the reaction catalysts used in the preparation of the foam include a polyisocyanate trimerization catalyst.

대표청구항 ▼

A process for preparing a flexible polyurethane foam by reacting a polyisocyanate with a polyol composition containing at least two different hydroxyl compounds in the presence of a trimerization catalyst and a blowing agent characterized in that the polyol composition comprises at least one hydroxy

A process for preparing a flexible polyurethane foam by reacting a polyisocyanate with a polyol composition containing at least two different hydroxyl compounds in the presence of a trimerization catalyst and a blowing agent characterized in that the polyol composition comprises at least one hydroxyl compound which is a polyol having a hydroxyl number of from 20 to 120 and at least one hydroxyl compound which is a polyether monoalcohol, and in that the trimerization catalyst is present in from 0.01 to 1.0 parts by weight per 100 parts polyol composition and is used in admixture with a urethane catalyst, and in that at least 50 percent of the total blowing requirement to prepare the foam results from the reaction of water and isocyanate.