Method of deacidifying paper
US3969549A · kind A · utility
22Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Dec 24, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of deacidifying paper wherein the paper has a substantially cellulose fiber base or substrate by exposing the paper to the vapors of a volatile organometallic compound and subsequently decomposing said compound to a base or alkaline material in situ. The treated material is usually first dried in vacuo and exposed under anhydrous or nearly anhydrous conditions to the organic-metallic compound. The method has the advantage of being able to treat large quantities of material at any one time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.