Mass cellulose deacidification process
US5264243A · kind A · utility
10Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Jun 16, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention provides a process for deacidifying paper by contacting the paper one or more times with hydrocarbon or halocarbon solutions of certain magnesium and/or zinc alkoxyalkoxides which may have been treated with carbon dioxide to yield low viscosity solutions, drying the books and rehydrating the books.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.