Cleaners containing peroxide bleaching agents for cleaning paper making equipment and method
US7101832B2 · kind B2 · utility
4Cited by
59References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Apr 12, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cleaning solution for paper making equipment includes a stabilized source of peroxide in combination with a glycol ether solvent system and an alcohol ethoxylate. The peroxide system can be hydrogen peroxide stabilized with a phosphonate such as HEDP. The glycol solvent system may be a propylene glycol ether such as dipropylene glycol methylether or tripropylene glycol methylether. This solution can be formulated with a pH from about 4 to about 12. This is used by recirculating it through a paper making equipment during a shut down procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.