Drycleaning method using dipropylene glycol n-propyl ether
US7087094B2 · kind B2 · utility
6Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Aug 6, 2024 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L1/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A drycleaning method is disclosed. In the method, a composition that comprises dipropylene glycol n-propyl ether (DPnP) and is essentially free of siloxanes or polysulfonic acids is used. The composition contains at least about 80 wt. % DPnP and up to about 15 wt. % of water. The method enables superior stain removal while avoiding excessive fabric shrinkage or soil redeposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.