Neutral pH freezer bar and process
US5225098A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1992 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Mar 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D13/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
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; PA0 wherein said neutral pH is from about 6.3 to about 8.0; PA0 wherein the neutral pH freezer bar is made by the following steps: PA0 I. mixing a molten (170.degree.-205.degree. F.; 76.degree.-96.degree. 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; PA0 II. cooling said mixture to a semi-solid in a scraped wall heat exchanger freezer; PA0 III. 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.