Polyurea-polyurethane acrylate dispersions

Details Polyurea-polyurethane acrylate dispersions Polyurea-polyurethane acrylate dispersions

C - Chemistry, Metallurgy

08

L

400/5506

C08L 75/04 (2006.01) C08G 18/65 (2006.01) C08G 18/67 (2006.01)

Patent

CA 1323121

Abstract A polymerizable ethylenically unsaturated urea urethane polymer dispersed in a polymerizable ethylenically unsaturated compound is prepared by a process which comprises reacting a polyisocyanate, at least a portion of which is a diisocyanate, with a polyfunctional amine containing primary and/or secondary amino groups in the presence of: (a) a polyol, at least a portion of which is a polymeric polyol containing ethylenic unsaturation and having a carbon to oxygen ratio of at least 4/1; (b) a diluent which is an ethylenically unsaturated compound free of active hydrogens; and (c) an active hydrogen containing polymerizable ethylenically unsaturated compound; under conditions sufficient to form a polymerizable ethylenically unsaturated urea urethane polymer dispersed in a polymerizable ethylenically unsaturated compound. The aforedescribed urea urethane polymer dispersions are particularly useful in formulating curable compositions suitable for use as adhesives and sealants.

562570

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