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US 2016/0235850 A1Published application
Aqueous solution containing n-long-chain acyl acidic amino acid and/or salt thereof, and method for producing same
AssigneeAjinomoto Co., Inc.
InventorsGaku HATTORI, Hiroji ISHII, Masahiro INO
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Abstract
The present invention provides a method of producing an aqueous solution containing an N—C8-22 acyl acidic amino acid and/or a salt thereof and having pH 8.4-9.5, including the first step for reacting an acidic amino acid and/or a salt thereof with a C8-22 fatty acid chloride in a water solvent at pH 10-13 to form an N—C8-22 acyl acidic amino acid salt, and the second step for adjusting the pH of the aqueous solution after the first step to 8.4-9.5.
Claims18
A method of producing an aqueous solution,
- said solution comprising at least one member selected from the group consisting of an N—C8-22 acyl acidic amino acid and a salt of an N—C8-22 acyl acidic amino acid and having pH 8.4 to 9.5,
- said method comprising:
- (i) reacting at least one member selected from the group m consisting of an acidic amino acid and a salt of an acidic amino acid with a C8-22 fatty acid chloride in a water solvent at pH 10 to 13 to obtain an aqueous solution comprising said at least one member selected from the group consisting of an N—C8-22 acyl acidic amino acid and a salt of an N—C8-22 acyl acidic amino acid;
- and
- (ii) adjusting the pH of said aqueous solution to a value of 8.4 to 9.5.
2 more elements
An aqueous solution, comprising:
- (A) 1.0 to 10.0 wt % of at least one member selected from the group consisting of an acidic amino acid and a salt of an acidic amino acid;
- (B) 10.0 to 30.0 wt % of at least one member selected from the group consisting of an N—C8-22 acyl acidic amino acid and a salt of an N—C8-22 acyl acidic amino acid;
- and
- (C) 0.5 to 5.0 wt % of at least one member selected from the group consisting of an N—C8-22 acyl acidic amino acid dipeptide and a salt of an N—C8-22 acyl acidic amino acid dipeptide, and
- which has pH of 8.4 to 9.5.
2 more elements
Dependencies are inferred from the claim text.