Polyol compositions for producing rigid polyurethane foams

Details Polyol compositions for producing rigid polyurethane foams Polyol compositions for producing rigid polyurethane foams

C - Chemistry, Metallurgy

08

G

400/102, 403/47

C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/65 (2006.01) C08G 18/66 (2006.01)

Patent

CA 2003934

Abstract of the Disclosure A polyol composition for producing rigid polyurethane foams is disclosed which contain adducts of ethylene oxide or propylene oxide or both to resorcinol, catechol, cresorcinol or their homologues having two hydroxyls at the ortho or meta positions to each other, or adducts of ethylene oxide or propylene oxide or both to bisphenol A in combination with a second polyol and a low molecular weight glycol as a crosslinking agent. The resultant rigid polyurethane foams have such a high heat resistance as to stand the use over a long period under high temperature circumstances.

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