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US 5,516,511 AGranted
Antiperspirant gel compositions comprising chelators
AssigneeThe Procter & Gamble Company
InventorsCurtis B. Motley, Barton J. Bradbury
Life of this patent
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Abstract
The subject invention relates to antiperspirant gel compositions comprising chelators. The subject invention also relates to a process for the manufacture of antiperspirant gel compositions comprising the steps of: (a) pre-mixing a chelator with an antiperspirant active in a substantially water free environment; and (b) adding a gelling agent and a liquid base material to the product of step (a) in a substantially water free environment.
Claims14
Antiperspirant gel composition comprising:
- a. an effective amount of an antiperspirant active
- b. an effective amount of a gelling agent comprising a primary gellant selected from the group consisting of 12-hydroxystearic acid, esters of 12-hydroxystearic acid, amides of 12-hydroxystearic acid corresponding to the formula:
- ##STR4## wherein R.sub.4 is OR.sub.5 or NR.sub.5 R.sub.6 ;
- and R.sub.4 and R.sub.5 are, independently selected from the group consisting of hydrogen, alkyl moiety, aryl moiety having from 1 to about 26 carbon atoms and mixtures thereof;
- a secondary gellant selected from the group consisting of n-acyl amino acid amide derivatives corresponding to the formula:
- ##STR5## wherein R.sub.1 is alkyl or aryl having from about 6 to about 22 carbon atoms;
- R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl ester, aryl ester, alkyl amide, aryl amide and mixtures thereof each having from about 1 to about 26 carbon atoms;
- and mixtures of said primary and secondary gellants;
- c. an effective amount of a chelator selected from the group consisting of acetylacetone, ethylene diamine-N,N,N',N'-tetracetic acid, nitrilotriacetic acid, oxalate, citric acid, 1,2-diaminocyclohexane-N,N,N'N'-tetracetic acid, 4,5-dihydroxybenzene-1,3-disulfonic acid, pyrocatechol-3,5-disulfonate, salicylic acid, 5-sulfosalicylic acid, xylenol orange, aurintricarboxylic acid, 2,2'-pyridyl ethylene diamine, glycine, 8-hydroxyquinoline-5-sulfonic acid, lactic acid, 1,10-phenanthroline, pyridine, pyridine-2,6-dicarboxylic acid, 8-quinolinol, succinic acid, tartaric acid, thioglycolic acid, 1,1,1-trifluoro-3,2'-thenolyacetone, and triethylene tetramine;
- and salts and mixtures thereof;
- and
- d. an effective amount of a liquid base material.
9 more elements
A process for manufacturing low-aqueous antiperspirant gel compositions comprising the steps of:
- (a) pre-mixing a chelator with an active in a substantially water-free environment;
- and
- (b) adding a liquid base matrix, comprising a gelling agent and a liquid base material, to the product of step (a) in a subatantially water-free environment.
Dependencies are inferred from the claim text.