Emulsions water - to - oil has internal phase high and their application to the manufacture of composite materials, foams, absorbing a porous structure comprising a superabsorbent polymer of acrylic

摘要

This water - to - oil to high internal phase (hipe), the continuous external oil phase comprises at least one monomer with ethylenic unsaturation and at least one emulsifier, which is soluble in the oil phase, is characterized by the fact that the aqueous phase contains, in solution, of acrylic acid at least partially neutralized, and does not contain inorganic salt, the said emulsifying agents being chosen from emulsifiers macromolecular be added or not of emulsifiers molecular changes, and, in the case where the acrylic acid is partially neutralized and is present at a concentration of less than 20% by weight in the aqueous phase, also of the emulsifiers molecular.