Manufacturing method of iron soap
AssigneeNof Corporation
InventorTakeshi Yoshimura
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Abstract
A method of manufacturing an iron soap is disclosed herein. The method comprising the steps of: reacting, at a temperature equal to or lower than a crystal transition initiation temperature of the iron soap to be manufactured, between a straight-chain saturated fatty acid alkali metal salt aqueous solution having from 12 to 22 carbons and a trivalent iron salt aqueous solution with pH of 0.1 to 5.5 so as to prepare an iron soap slurry; and adjusting pH of the prepared iron soap slurry to from 0.1 to 6.0.
Claims1
A method of manufacturing an iron soap having a content A (%) of free fatty acid being 0.01≤A≤8.0, a content B (%) of water soluble salt being 0.01≤B≤0.5, and a granularity summary value C indicated in Formula (1) being 0.1≤C≤5.0, wherein the iron soap is a salt of a straight-chain saturated fatty acid having from 12 to 22 carbons and an iron,
- Granularity summary value C=(D90−D10)/D50 (where 1.0≤D50≤40.0) Formula (1)
- D10:
- 10% cumulative diameter (μm) of fatty acid metal salt particles on a volumetric basis
- D50:
- 50% cumulative diameter (μm) of fatty acid metal salt particles on a volumetric basis
- D90:
- 90% cumulative diameter (μm) of fatty acid metal salt particles on a volumetric basis
- the method comprising the steps of:
- reacting, at a temperature equal to or lower than a crystal transition initiation temperature of the iron soap to be manufactured, between a straight-chain saturated fatty acid alkali metal salt aqueous solution having from 12 to 22 carbons and a trivalent iron salt aqueous solution with pH of 0.1 to 5.5 so as to prepare an iron soap slurry;
- and
- adjusting pH of the prepared iron soap slurry to from 0.1 to 6.0.
Dependencies are inferred from the claim text.