Sustainable laundry sour compositions with iron control
US11339357B2 · kind B2 · utility
1Cited by
21References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2021 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Feb 15, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Linen treatment compositions and linen processes are disclosed which help to prevent iron deposition from wash water, and/or redeposition after iron containing stain (such as blood) removal by alkaline detergents. The linen treatment composition is a combination of a hydroxycarboxylic acid and an acid source, which may be organic or inorganic. The invention provides for effective iron control in a phosphorus-free formula that is also free of toxic or hazardous chemicals and includes sustainable, environmentally friendly ingredients, while still providing effective iron control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.