Process for cleaning parts soiled or encrusted with polyester resin
US5582650A · kind A · utility
9Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Jan 13, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/46
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process using primarily aqueous-based surfactants for cleaning machinery, tools, containers and the like to remove polyester resin residue. This process involves four stages, each having one or more steps. The first stage is a pre-wash or preliminary cleaning stage which is followed by an ultra-sonic wash stage. The third stage is a rinse stage and the fourth and last stage is for drying the parts cleaned during the previous three stages of the process. Additionally, a fifth evaporation/drying stage is periodically carried out to remove polyester resin residues from the process as solid waste.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.