Adhesive and its use for producing adhesive bonds

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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4284231, 525 63, C09J 404, C08L 5108

Patent

active

050153218

ABSTRACT:
A moisture cured adhesive comprising a reaction product of an organic polyisocyanate and an organic polyhydroxyl component which comprises at least one polyether polyol which has been modified by radical polymerization or copolymerization with an olefinically unsaturated monomer is disclosed. The reaction product is characterized in that it contains about 2.5 to about 25% by weight of free isocyanate groups and in that the proportion of polymers or copolymers present in the organic polyhydroxyl component is about 1 to about 50 weight % based on the weight of the components. The adhesive in accordance with the invention is characterized by its superior shear strength.

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L. P. Rumao, J. Macromol, Science-Revis, Macromal Chem., 5/1, pp. 103-150, 1970.
M. Dollhausen, W. Warrach, "Polyurethane Adhesives Technology, Adhesives Age", Jun., 1982, p. 28.
A. Farkas and C. Z. Mills, Advanced Catalysis, 13, 393, 1962.
J. H. Saunders and K. C. Frisch, Polyurethane Part I, Wiley-Interscience, N.Y., 1962, Chapter VI.

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