Process for preparing soft flexible polyurethane foams and a polyol composition useful in said process
AssigneeShell Oil Company
InventorsJean-Claude N. E. Vandichel, Rene Aerts, Alan M. Batt
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Abstract
A process for preparing a soft flexible polyurethane foam by reacting (a) one or more organic polyisocyanates with (b) one or more polyols having a molecular weight in the range from about 400 to about 12,000, in the presence of (c) a catalyst, (d) a blowing agent, and (e), if desired, auxiliaries and/or additives, wherein the blowing agent (d) comprises water in admixture with about 0.01 to about 1 pbw, per 100 pbw polyol (b), of one or more non-crosslinked organic polyelectrolytes having a molecular weight in the range from about 1000 to about 20,000,000.
Claims11
A process for preparing a soft flexible polyurethane foam which comprises reacting (a) one or more organic polyisocyanates with (b) one or more polyols having molecular weights in the range from about 400 to about 12,000, in the presence of (c) a catalyst and (d) a blowing agent which comprises water in admixture with from about 0.001 to about 1 pbw, per 100 pbs polyol (b), of one or more non-crosslinked, water-soluble organic polyacrylate salts having a molecular weight in the range from about 1,500 to about 100,000.
A premix composition useful in the preparation of polyurethane foams, comprising one or a blend of polyols having molecular weights in the range from about 400 to about 12,000, one or a blend of non-crosslinked water-soluble polyacrylic acid salts having molecular weights in the range from about 1,000 to about 20,000,000, and water.
Dependencies are inferred from the claim text.