Polyurethane/polyisocyanurate foam having improved adhesion properties
A polyurethane/polyisocyanurate foam is obtainable from the reaction of A) a polyol component comprising A1) an aromatic polyester polyol, A2) a polyether polyol started on a carbohydrate polyol and A3) a polyether polyol started on ethylene glycol, wherein the total hydroxyl number of the polyol co...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
17.03.2015
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Subjects | |
Online Access | Get full text |
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Summary: | A polyurethane/polyisocyanurate foam is obtainable from the reaction of A) a polyol component comprising A1) an aromatic polyester polyol, A2) a polyether polyol started on a carbohydrate polyol and A3) a polyether polyol started on ethylene glycol, wherein the total hydroxyl number of the polyol component A) is from 150 mg KOH/g to 300 mg KOH/g; with B) a polyisocyanate component, wherein the equivalent ratio of NCO groups to the sum of the hydrogen atoms reactive towards NCO groups is from 110:100 to 200:100. This foam has improved adhesion properties to facings and is suitable for the production of composite elements without requiring the use of an additional adhesion promoter. |
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Bibliography: | Application Number: US201013508998 |