Water-in-resin emulsions containing polyester resins

A water in resin emulsion comprising a mixture of water dispersed in discrete droplets in a continuous phase of a resinous, copolymerizable composition including:

• (a) a copolymerizable mixture containing a liquid unsaturated polyester of a polyhydric alcohol and saturated and ethylenically unsaturated dicarboxylic acids and a compound having a polymerizable CH.sub.2 .dbd.C group, said copolymerizable mixture having a molecular weight in the range of from about 2500 to about 3500;
• (b) a cobalt salt promoter for promoting the cure of said copolymerizable mixture, present in an amount in the range of from about 0.25 to about 1.5% based on the weight of said copolymerizable mixture and a 12% cobalt content in said salt;
• (c) a tertiary aromatic amine accelerator for accelerating said promoter, present in an amount in the range of from about 0.75 to about 1.75% based on the weight of said copolymerizable mixture;
• and,
• (d) a lithium salt emulsifier for insuring the stability of an emulsion of water in said copolymerizable mixture upon agitation thereof, present in an amount in the range of from about 0.5 to about 1.5% based on the weight of said copolymerizable mixture and a 2% lithium content in said salt.