Personal cleansing freezer bar made with a rigid, interlocking mesh of neutralized carboxylic acid
US5425892A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1993 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Mar 24, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/90
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a personal cleansing freezer bar comprising a skeleton structure having a relatively rigid, interlocking, semi-continuous, open, three-dimensional, crystalline mesh of neutralized carboxylic acid soap selected from the group consisting of sodium soap; wherein said bar is made by the following steps: PA1 (1) mixing a molten mixture comprising by weight of said bar: from about 15% to about 85% of said soap and from about 15% to about 40% water; PA1 (2) cooling said mixture to a semi-solid in a scraped wall heat exchanger freezer; PA1 (3) extruding said semi-solid as a soft plug; and PA1 (4) further cooling said soft plug to provide said personal cleansing bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.