Storage-stable tris (hydroxyalkyl) isocyanurate polyol...

Details Storage-stable tris (hydroxyalkyl) isocyanurate polyol... Storage-stable tris (hydroxyalkyl) isocyanurate polyol...

C - Chemistry, Metallurgy

08

G

402/139

C08G 18/65 (2006.01) C08G 18/38 (2006.01) C08J 3/22 (2006.01)

Patent

CA 1203342

STORAGE-STABLE TRIS(HYDROXYALKYL)ISOCYANURATE POLYOL DISPERSIONS, PROCESS FOR THEIR PREPARATION AND THEIR UTILIZATION Abstract of the Disclosure The invention relates to storage-stable tris- (hydroxyalkyl)isocyanurate polyol dispersions containing (a) from 2 to 70 parts by weight tris(hydroxy- alkyl)isocyanurate, (b) from 98 to 30 parts by weight of at least one polyol having a functionality of from 2 to 8 and a hydroxyl number from 20 to 1800, and (c) from 0 to 20 parts by weight of one or more dispersion stabilizers. The dispersions are prepared by dissolving starting components A and B at temperatures in excess of 100°C, in some cases adding a dispersion stabilizer and/or crystallization accelerator, with continuous and step-wise cooling of the mixture while stirring. The products are utilized for the preparation of polyurethane plastics, in particular polyisocyanurate foams containing polyurethane or polyurethane groups.

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