Solvent-free hotmelt adhesive comprising a polyester polyurethan

Details Solvent-free hotmelt adhesive comprising a polyester polyurethan Solvent-free hotmelt adhesive comprising a polyester polyurethan

1985-03-07

1986-04-01

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

1563317, 528905, C08G 1834

Patent

active

045799300

ABSTRACT:
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.

REFERENCES:
patent: 4240861 (1980-12-01), Meckel et al.

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