Laundry process with enhanced ink soil removal
US6290732A · kind A · utility
7Cited by
29References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Nov 9, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved process for removing ink soil from porous substrates, preferably from woven fabrics which include cellulosic materials such as cotton towels is described herein. The process includes an initial contacting step with an alkyl fatty acid ester, a wash step with a conventional detergent and a final water rinse step. A chelating agent is used during one of the first two steps or, alternatively, between the first two steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.