Method and composition for preventing pitch deposits in paper mills using resinous mechanical pulps
US6369010B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Dec 1, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/72
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is a method and composition for preventing the deposition of contaminants from resinous pulp and/or recycled pulp in the press section of a pulp and paper process. The composition of the invention includes a cleaning solvent comprising a blend of aromatic hydrocarbons containing between nine and eleven carbon atoms and a surfactant comprising an alcohol ethoxylate. The composition of the invention can be applied to the felts in the press felt section of a pulp and paper process to break down and loosen deposited contaminants and the contaminants can be removed thereby preventing the need for batch cleaning and downtime in the press felt section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.