Surfactants
US6780576B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2003 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jun 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/38
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compound represented by formula (I): a compound represented by (II): or a mixture of at least one compound represented by formula (I) with at least one compound represented by formula (II), wherein M is hydrogen, an alkali atom or an ammonium group; R1 is hydrogen, a —(CH2)mSO3M group or a R2 is an alkyl-, alkenyl- or alkynyl- group having 6 to 25 carbon atoms; and m is an integer between 1 and 5; the use of at least one compound represented by the above-mentioned formula (I), at least one compound represented by the above-mentioned formula (II) or a mixture of at least one compound represented by the above-mentioned formula (I) and at least one compound represented by the above-mentioned formula (II) as a surfactant; and a photographic material comprising a support and a layer containing photosensitive silver halide, characterized in that the photographic material contains at least one compound represented by the above-mentioned formula (I), at least one compound represented by the above-mentioned formula (II) or a mixture of at least one compound represented by the above-mentioned formula (I) and at least one compound represented by the above-mentioned formula (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.