US 12,364,656 B2
Depilatory compositions comprising aminoalkylpropanol
Lorea Oria Martinez, Leeds (GB); Bronte Arabella Weir, Dubai (AE); Scott Seville, Hull (GB); Diane Marie Pavis, Hull (GB); and Victoria Walker, Hull (GB)
Assigned to Reckitt Benckiser Health Limited, Slough (GB)
Filed by Reckitt Benckiser Health Limited, Slough (GB)
Filed on Mar. 3, 2022, as Appl. No. 17/685,732.
Application 17/685,732 is a continuation of application No. 16/069,692, granted, now 11,266,586, previously published as PCT/GB2017/050077, filed on Jan. 12, 2017.
Claims priority of application No. 1600586 (GB), filed on Jan. 12, 2016.
Prior Publication US 2022/0265536 A1, Aug. 25, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/41 (2006.01); A61K 8/02 (2006.01); A61K 8/04 (2006.01); A61K 8/19 (2006.01); A61K 8/42 (2006.01); A61K 8/46 (2006.01); A61K 8/73 (2006.01); A61K 8/81 (2006.01); A61Q 9/04 (2006.01)
CPC A61K 8/41 (2013.01) [A61K 8/0208 (2013.01); A61K 8/042 (2013.01); A61K 8/046 (2013.01); A61K 8/19 (2013.01); A61K 8/42 (2013.01); A61K 8/46 (2013.01); A61K 8/73 (2013.01); A61K 8/8152 (2013.01); A61Q 9/04 (2013.01); A61K 2800/262 (2013.01)] 24 Claims
 
1. A depilatory composition comprising:
a depilatory active, wherein the depilatory active is present in an amount of from 0.5 to 10 wt % based on the weight of the depilatory composition, and wherein the depilatory active contains a thiol group and is selected from the group consisting f potassium thioglycolate, calcium thioglycolate, thioglycolic acid, dithioerythritol, thioglycerol, thioglycol, thioxanthine, thiosalicylic acid, N-acetyl-L-cysteine, lipoic acid, sodium dihydrolipoate 6,8-dithiooctanoate, sodium 6,8-diothiooctanoate, a hydrogen sulphide salt, 2-mercaptopropionic acid, 3-mercaptopropionic acid, thiomalic acid, ammonium thioglycolate, glyceryl monothioglycolate, monoethanolamine thioglycolate, monoethanolamine thioglycolic acid, diammoniumdithiodiglycolate, ammonium thiolactate, monoethanolamine thiolactate, thioglycolamide, homocysteine, cysteine, glutathione, dithiothreitol, dihydrolipoic acid, 1,3-dithiopropanol, thioglycolamide, thioglycol-hydrazine, keratinase, guanidine thioglycolate, cysteamine, and combinations thereof;
an alkali metal hydroxide selected from the group consisting of sodium hydroxide and/or potassium hydroxide; and
an aminoalkylpropanol, wherein the aminoalkylpropanol is present in an amount of from 0.2 to 10 wt % based on the weight of the depilatory composition; and
wherein at 20° C. the composition has a pH in the range of from 10 to 12.5.