| http://www.w3.org/ns/prov#value | - In one embodiment the foregoing types of impact modifiers are prepared by an emulsion polymerization process that is free of basic materials (i.e., bases) such as alkali metal salts of C6-30 fatty acids, for example sodium stearate, lithium stearate, sodium oleate, potassium oleate, and the like, alkali metal carbonates, amines such as dodecyl dimethyl amine, dodecyl amine, and the like, and ammon
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