ACRYLIC POLYMER LATEX DISPERSIONS AS ADDITIVES FOR INHIBITING PARAFFIN DEPOSITS IN CRUDE OILS AND COMPOSITIONS CONTAINING SAME

摘要

The invention concerns latex dispersions based on (co)polymers of one or several n alkyl (meth)acrylate monomers, n ranging between 6 and 40, and optionally one or several hardly water-soluble of (meth)acrylic and/or vinyl type, optionally one or several polar monomers selected among (meth)acrylamides and their derivatives and optionally one or several monomers selected among ethylenically unsaturated monocarboxylic or dicarboxylic acids or anhydrides. Said dispersions are obtained by free radical emulsion polymerisation in the presence of water. They can be used as such for inhibiting paraffin deposits contained in unrefined petroleum or diluted in one or several solvents.