C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/137, 117/195
C08G 18/08 (2006.01) B32B 7/12 (2006.01) C08G 18/42 (2006.01) C08G 18/66 (2006.01) C09J 175/06 (2006.01)
Patent
CA 1233294
SOLVENT-FREE HOTMELT ADHESIVE ABSTRACT OF THE DISCLOSURE The invention relates to a solvent-free hotmelt adhesive based on polyester polyurethanes which are suitable for the production of composite structures and, in particular, laminated parts for the interior finishing of motor vehicles. The hotmelt adhesive is based on polyester polyurethanes which are obtained by reacting organic polyester polyols and low molecular weight diols as chain-extending agents and which are modified by the incorporation of carboxyl and sulfonate groups. In addition to these modified polyester polyurethanes, the hotmelt adhesive may also contain unmodified polyester polyurethanes and crosslinking agents. The hotmelt adhesive is preferably in the form of a film or an in situ coating on a substrate. The hotmelt adhesive is produced by known processes of the type normally used for producing the known, unmodified polyester polyurethanes.
476012
Kramer Jurgen
Muller-Albrecht Horst
Aktiengesellschaft Bayer
Beiersdorf Ag
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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