Water dispersible polyurethane adhesive

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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Details

524 35, 524270, 524272, 524274, 524764, C08L 7506

Patent

active

054552931

ABSTRACT:
A rapid hardening, solvent-free water-based adhesive composition includes an amount of an aqueous latex dispersion of polyester-polyurethane synthetic resin, an amount of rosin acid ester hardener, an amount of a thickener together with an amount of inert filler and an amount of a plasticizer/extender in sufficient water to adjust the percent solids to the desired amount. Optionally, the adhesive composition also includes an amount of polyisocyanate cross-linker to provide additional environmental stability.

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patent: 5212230 (1993-05-01), Tirpak et al.
patent: 5221710 (1993-06-01), Markusch et al.
patent: 5236994 (1993-08-01), Markusch et al.
patent: 5258425 (1993-11-01), Kirby

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