Method of decreasing the rate of photoyellowing with thiocyanic acid
US8092649B2 · kind B2 · utility
7Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2005 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Sep 27, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of decreasing the rate of photoyellowing in paper containing mechanical pulp comprising: applying an aqueous solution containing an effective amount of one or more salts of thiocyanic acid on the surface of a paper sheet in a papermaking process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.