Radiation-curable polyurethane emulsion compositions

Details Radiation-curable polyurethane emulsion compositions Radiation-curable polyurethane emulsion compositions

1993-11-30

1994-11-01

Berman, Susan W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 86, 522 90, 522 96, 522 97, 522 98, 522149, 524457, 524591, 524839, C08F 246, C08G 1863, C08G 1881

Patent

active

053608356

ABSTRACT:
Radiation-curable polyurethane emulsion compositions that can be diluted with water are disclosed. An emulsion of a polyurethane having active amino groups is prepared, and the emulsion is reacted, in the presence of water, with an isocyanate compound having a polymerizable unsaturated group to introduce the polymerizable unsaturated group into the polyurethane. The introduction of a polymerizable unsaturated group into the polyurethane is accomplished in the presence of water, thereby overcoming prior art problems of polymerization and gelation during the preparation of the emulsion. The present invention provides radiation-curable polyurethane emulsion compositions that can be produced on an industrial scale.

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