C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/77 (2006.01) C08G 18/12 (2006.01) C08G 18/62 (2006.01) C08G 18/69 (2006.01) C08J 9/14 (2006.01) C08J 9/20 (2006.01) C08J 9/30 (2006.01)
Patent
CA 2221015
A pressurized, blowing agent-containing, isocyanate-terminated prepolymer containing oxazolidone and urethane groups can be prepared by reacting an isocyanate component with a polyol component, wherein the isocyanate component (A) used is a reaction product containing terminal isocyanate groups and obtained by reacting at least one isocyanate containing at least two isocyanate groups in the molecule with a mixture of at least one compound containing at least two functional groups which react with isocyanate and at least one epoxide group in the molecule and a polyester polyol and the polyol component (B) used comprises at least one polyether terminated by primary hydroxyl groups and having a functionality of ~2.
Divulgation des étapes de fabrication d'un prépolymère pressurisé à terminaison isocyanate, à partir d'oxazolidone et d'uréthanne, et contenant un agent gonflant : faire réagir un composant isocyanate avec un composant polyol. Le composant isocyanate (A) à terminaison isocyanate est le produit de la réaction entre au moins un isocyanate contenant au moins deux groupements isocyanate dans la molécule et un mélange d'au moins un composé contenant au moins deux groupements fonctionnels qui réagissent avec l'isocyanate et au moins un groupement époxyde dans la molécule et un polyol de polyester. Le composant polyol (B) comprend au moins un polyéther à terminaison hydroxyle primaire et ayant une fonctionnalité d'environ 2.
Forster Heinz
Reese Hans-Juergen
Wild Heike
Basf Aktiengesellschaft
Forster Heinz
Reese Hans-Juergen
Robic
Wild Heike
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