Polyol blend and polyisocyanurate foam produced therefrom

Details Polyol blend and polyisocyanurate foam produced therefrom Polyol blend and polyisocyanurate foam produced therefrom

C - Chemistry, Metallurgy

08

G

400/102, 403/13

C08G 18/66 (2006.01) C08G 18/09 (2006.01) C08G 18/28 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01)

Patent

CA 1247766

NOVEL POLYOL BLEND AND POLYISOCYANURATE FOAM PRODUCED THEREFROM ABSTRACT OF THE DISCLOSURE The present invention is directed to a polyol blend comprising: (a) from about 30 to about 90 percent by weight of a polyester diol having an OH number of from about 50 to about 500 and having the structure: Image wherein each R may be the same or different and represents a radical of the formula: Image where R" represents H or CH3 with the proviso that both R"s cannot be CH3, and y represents a number of from 1 to 5, wherein R' represents an aromatic radical having from 6 to 12 carbon atoms, and wherein x represents a number of from 0 to 5, (b) from about 2 to about 40 percent by weight of an organic compound containing from 3 to 8 hydroxyl groups and being selected from the group consisting of (i) compounds having OH numbers of from about 250 to about 1830 and being free of carboxylic acid ester groups, (ii) compounds having OH numbers of from about 150 to about 1000 and contain- ing at least one carboxylic acid ester group, and (iii) mixtures thereof, (c) from about 5 to about 30 percent by weight of a condensation product formed from 1 mole of a phenol and from 4 to 15 moles of ethylene oxide, and (d) from 0 to about 40 percent by weight of at least one diol of the structure: Image where R" and y are as defined above, and to an isocyanurate foam prepared therefrom.

479528

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