| http://www.w3.org/ns/prov#value | - Other likewise preferred non-ionic emulsifiers are, for example, polyethylene and polypropylene glycol ethers, especially having approximately from 2 to 23 ethylene glycol or ethylene oxide units, of alcohols, such as fatty alcohols, for example of the kind mentioned above, and also polyethers, of fatty acid esters, equally of the etherified and those of the glycerine and sorbitan type, or of fatt
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