Washing/drying method with an aqueous solution containing surfactant
US5203927A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Apr 26, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S134/902
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A washing/drying method, comprising: dipping a material to be washed into an aqueous solution containing a surfactant having a water repellency so that at least one molecular layer of the water repellent surfactant is attached to the surface of the material to be washed; and then drying the material according to a known drying method such as vacuum drying, shaking off, blowing with gas and heating; or heating the material to be washed with steam at a temperature of less than 100.degree. C. in an atmosphere reduced to a pressure such that the boiling point of water becomes less than 100.degree. C.; and then drying the material according to a known drying method such as vacuum drying, shaking off, blowing with air, and heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.