Deacidification process
US5137760A · kind A · utility
7Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | May 7, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a process for treating a printed cellulosic article for inhibiting acid promoted deterioration thereof comprising providing in a pressure vessel containing said article, a transport medium containing carbon dioxide, and base material dispersed in said medium for transport to said article said vessel being pressurized with said carbon dioxide to between about 650 and about 1200 psi and maintained for a sufficient treatment period to cause substantial pervasion of said base material in said article, and separating said medium from said article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.