Quaternary ammonium polymers and photographic materials containing same
US4108802A · kind A · utility
5Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | May 20, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/835
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers comprising repeating units which contain groupings of the formula --CH.sub.2 OOCR.sub.1, wherein R.sub.1 is hydrogen or alkyl with 1 to 14 carbon atoms and the --CH.sub.2 --group is directly bonded to a quaternary nitrogen atom. The polymers are useful in photographic materials as mordants for anionic compounds especially for anionic dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.