C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/66 (2006.01) C08G 18/36 (2006.01) C08G 18/42 (2006.01) C08G 18/72 (2006.01) C08J 9/14 (2006.01)
Patent
CA 2305276
Disclosed are aromatic polyester polyols, polyester polyol resin blends, methods for preparing such compositions and polyurethane and polyisocyanurate foams made using the compositions, wherein the resin blends generally comprise: (a) an aromatic polyester polyol formed by a reaction between a phthalic acid based material; a hydroxylated material having a functionality of at least 2; and a hydrophobic material; (b) a nonionic surfactant; and (c) a C4-C7 hydrocarbon blowing agent.
L'invention concerne des polyols de polyesters aromatiques, des mélanges de résines à base de ces polyols, et des procédés relatifs à la fabrication de telles compositions, ainsi que des mousses de polyuréthanne et de polyisocyanurate fabriquées à partir de ces compositions, lesdits mélanges de résines comprenant généralement: (a) un polyol de polyester aromatique résultant de la réaction entre un matériau à base d'acide phtalique, un matériau hydroxylé à valence fonctionnelle au moins égale à 2, et un matériau hydrophobe; (b) un tensioactif non ionique; et (c) un gonflant à base d'hydrocarbure C4-C7.
Mbm Intellectual Property Law Llp
Stepan Company
LandOfFree
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