Parallel k-means Algorithm on a Cyclic Network

To allow the use of stearyl stearate or paraffin in amounts to restrict styrene evaporation from an unsaturated polyester resin during curing, there is present in the resin a small amount (0.1 to 5% by weight) of a long-chain vinyl compound of the formula wherein R is straight- or branched-chain substituted or unsubstituted aliphatic C6-C24 hydrocarbon, Y=H or CH3, n=zero or 1, Preferred such compounds are lauryl and stearyl methacrylate. The resins are made by admixture of the selected compound(s) with the conventional other components of the resin.