C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 13/00 (2006.01) C07C 51/41 (2006.01) C10M 117/02 (2006.01)
Patent
CA 2097645
ABSTRACT OF THE DISCLOSURE. An improved method for preparing aqueous dispersions of metal soaps in the presence of an ionic surfactant formed in-situ is described.The method comprises two main steps: (a) partially neutralizing a saturated or unsaturated fatty acid containing between 8 to 28 carbon atoms with an alkali metal oxide or hydroxide including ammonia and (b) mixing the resulted dispersion with an aqueous dis- persion of a metal oxide or hydroxide, said metal being selected from calcium, magnesium, calcined calcium carbonate, calcined dolomite, strontium, barium and any mixture thereof. The preferred alkali metal used in step (a) is selected from lithium, sodium, potassium and any mixture thereof. The fatty acid used in step (a) is selected from stearic acid, palmitic acid, myristic acid, oleic acid, linoleic acid and any mixture thereof. The concentration of the aqueous dispersion of metal soaps is generally in the range of between 0.2% to 50% by weight. The aqueous dispersions of metal soaps were found to be useful as additives for improving the flowability of polymer materials - 1 - The present invention relates to a novel method for the preparation of aqueous dispersions of metal soaps. More particularly, the invention relates to a novel method for the preparation of metal soaps obtained in the presence of an ionic surfactant formed in-situ.
Lerner Felix
Zilberman Ekhiel
Electrochemical Industries (frutarom) Ltd.
Sim & Mcburney
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