Aqueous polyurethane dispersions formed from polyisocyanates hav

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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524839, 524840, 4273722, 4273855, C08J 300, C08K 320, C08L 7500, B05D 302

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active

059004576

ABSTRACT:
The present invention is directed to aqueous polyurethane dispersions and aqueous polyurethane-acrylic dispersions, especially polymer dispersions formed from norbornane diisocyanate. The dispersions, and the dried polymers therefrom, are useful adhesives that provide enhanced bond strength when subjected to increased thermal and mechanical stress. Additionally, the inventive dispersions form polymers having increased adhesion compared to similar polymers based on cycloaliphatic diisocyanates which are free of a methylene bridge.

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Product Data from Mitsui Toatsu Chemicals, Inc., Jun., 1995.
Organic Chemistry, Second Edition, T.W. Graham Solomons, p. 112.

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