Coating composition for photographic materials
US6911302B2 · kind B2 · utility
1Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2003 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Nov 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coating composition for use in a photographic element, the composition comprising an aqueous solution of: two or more surfactants; a hydrophilic binder; and optional matte particles; wherein one of the surfactants is represented by the following Formula (I):Rf—CH2CH2—(B)y-A (I)where Rf is F(CF2CF2)n— and n is 3 and 4 or 3, 4, and 5, and the fraction of all Rf with n=3 is at least 40%;B is a divalent linking group; y is 0 or 1; and A is an anionic group with a counterion or an amphoteric group. A photographic element containing the coating composition is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.