Reduction or removal of chlorhexidine and/or avobenzone from fabric materials
US9133419B2 · kind B2 · utility
0Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2012 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Feb 7, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for removing chlorhexidine and/or avobenzone from fabric materials utilizes an acidic detergent composition including phosphoric acid and a surfactant in a flush cycle of a washing machine adapted to perform separate flush, wash, and bleaching cycles. The acidic detergent composition is present in the flush solution in a sufficient quantity to provide a pH less than about 5 and, advantageously, above about 2. The acidic detergent composition is advantageously substantially free of a chlorine-based oxidant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.