Skin ph freezer bar and process

Details Skin ph freezer bar and process Skin ph freezer bar and process

C - Chemistry, Metallurgy

11

D

C11D 10/04 (2006.01) C11D 11/00 (2006.01) C11D 13/18 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2131309

2131309 9319157 PCTABS00025 The invention provides a firm, low smear, ultra mild, weakly acidic skin pH personal cleansing bar comprising by weight of said bar: from about 10 % to about 50 % of essentailly free carboxylic acid, preferably myristic acid, behenic acid, or 12-hydroxy stearic acid; from about 15 % to about 65 % of a water-soluble organic anionic and/or nonionic bar firmness aid, preferably sodium cocoyl isethionate or sodium lauroyl isethionate; and from about 15 % to about 55 % water. The skin pH freezer bar is made by the following process steps: I) mixing a molten (170-205 ·F; 76-96 ·C) mixture comprising said essentailly free carboxylic acid; water; and bar firmness aid; II) cooling said mixture to a semi-solid in a scraped wall heat exchanger freezer at a cooled temperature of 110-195 ·F (43-91 ·C); III) extruding said semi-solid as a soft plug; and further cooling and crystallizing said soft plug until firm to provide said skin pH personal cleansing freezer bar. The firm, low smear, ultra mild freezer bar has a shallow 25 ·C penetration value of from zero up to 12 mm.

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