Neutral ph freezer bar and process

Details Neutral ph freezer bar and process Neutral 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 2131310

2131310 9319158 PCTABS00025 The invention provides a firm, ultra mild, neutral pH freezer bar comprising: from about 10 % to about 50 % of monocarboxylic acid; wherein from about 20 % to about 65 % by weight of said monocarboxylic acid is neutralized; from about 20 % to about 65 % of an anionic and/or nonionic bar firmness aid, and from about 15 % to about 40 % water by weight of said bar; wherein said neutral pH is from about 6.3 to about 8.0; wherein the neutral pH freezer bar is made by the following steps: I) mixing a molten (170-205· F; 76-96·C) mixture comprising said carboxylic acid; water; and bar firmness aid; neutralizing said 20 % to about 65 % of said carboxylic acid, preferably with sodium hydroxide; III) cooling said mixture to a semi-solid in a scraped wall heat exchanger freezer; II) extruding said semi-solid as a soft plug; and further cooling and crystallizing said soft plug until firm to provide said neutral pH personal cleansing freezer bar.

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