ADHESIVE LOW-MONOMER PU FOAM

The invention relates to a foamable composition that can be cross-linked, having a low monomeric isocyanate content, comprising 70 to 99.8 wt % of prepolymers produced from polyester polyols and/or polyether polyols by reacting same with an excess of aromatic diisocyanates and subsequently removing...

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Bibliographic Details
Main Authors KOLENDA, Felicitas, LOHR, Christoph, SEBESTIAN, Milan, FRANKEN, Uwe, KREBS, Michael
Format Patent
LanguageEnglish
French
German
Published 22.06.2022
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:The invention relates to a foamable composition that can be cross-linked, having a low monomeric isocyanate content, comprising 70 to 99.8 wt % of prepolymers produced from polyester polyols and/or polyether polyols by reacting same with an excess of aromatic diisocyanates and subsequently removing excess monomeric diisocyanate, 0.2 to 30 wt % of additives and at least one propellant, wherein the polyols comprise a functionality of less than 2.5, the polyols have a molar mass (MN) between 150 and 3000 g/mol, and the prepolymers comprise a monomeric diisocyanate content of less than 5 wt %.
Bibliography:Application Number: EP20110730936