FORMALDEHYDE-FREE, CARBONYL- AND RING-HYDROGENATED KETONE-ALDEHYDE RESINS BASED ON ALKYL ARYL KETONES AND FORMALDEHYDE WHICH HAVE A LOW OH FUNCTIONALITY AND A PROCESS FOR PREPARING THEM

The invention relates to formaldehyde-free, carbonyl- and ring-hydrogenated ketone-aldehyde resins based on alkyl aryl ketones and formaldehyde and having a low OH-functionality, a low fraction of crystallisable compounds, low viscosity, very low colour number, and very high heat stability and light...

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Hauptverfasser: GLOECKNER PATRICK, LETTMANN CHRISTIAN, EWALD MICHAEL, WENNING ANDREAS
Format: Patent
Sprache:eng
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Zusammenfassung:The invention relates to formaldehyde-free, carbonyl- and ring-hydrogenated ketone-aldehyde resins based on alkyl aryl ketones and formaldehyde and having a low OH-functionality, a low fraction of crystallisable compounds, low viscosity, very low colour number, and very high heat stability and light stability, and also to a process for preparing them.