Deacidification treatment of printed cellulosic materials
US6676856B1 · kind B1 · utility
2Cited by
14References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M7/0027
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides for improvements in composition and methods for the preservation of cellulosic materials through use of solutions comprising organic multi-valent metal carbonates, C1-C4 alcohol having a moisture content of less than 100 ppm, and 86-99 weight percent of a solvent having a moisture content of less than 100 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.