Process of bleaching laundry
US4699623A · kind A · utility
8Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1985 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Nov 18, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention involves a process for bleaching domestic laundry in a domestic washing cycle, comprising prewashing the laundry in an alkaline bath with pH between 9 and 13 and at a temperature between about 40.degree. C. to 70.degree. C. in the presence of at least one peroxide bleaching agent and an uncomplexed calcium, said calcium being present in an amount between about 0.002% to 1% by weight of the bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.