I thought I was reading something written by Professor Stanley Unwin there.Dave Ward ,
Apparently invented by 3 Japanese chemists.
The aqueous acrylic copolymer emulsion is produced by carrying out high-temperature redox emulsion polymerization of a polyvinyl alcohol having a saponification degree of ≥95 mol% and an average polymerization degree of 100-1,000 and a hydrophobic ethylenic unsaturated monomer having a water-solubility of ≤1.0 wt.% in an aqueous medium in the presence of a reducing agent at 75-90°C, adding a monomer component at least containing an acrylic monomer and carrying out emulsion polymerization of the components. The emulsion composition has excellent polymerization stability.
Of course we all new this before I looked it up, funny enough Id seen this same term used to describe a normal wall paint for houses ! So its another marketing ploy to make us part with our money !!!!
Andy.