Laminating adhesives for flexible packaging

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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1563311, 1563314, 1563317, 4284231, 4284235, 4284237, 4284242, 4284244, 4284246, 4284258, 524539, 524507, 524839, 524840, C08J 300, C08J 320, C08L 7500, C09J 400

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058345540

ABSTRACT:
A process for the preparation of sulfonated polyurethane-urea polymers, which are useful film to film laminating adhesives for flexible packaging in which the urethane-urea polymer component has no amide linkages. The water-based sulfonated polyurethane prepolymers are processed at reduced temperatures and are substantially free of volatile and/or leachable contaminants.

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Aqueous Polyurethane Dispersions from TMXDI (Meta) Aliphatic Isocyanate, Feb. 1989, Cyanamid.

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