Carbamyl-substituted bis(vinylsulfonyl) methane hardeners
US5411856A · kind A · utility
5Cited by
27References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1994 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Jan 10, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C317/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel compounds represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen or alkyl, R.sub.3 represents hydrogen, alkyl, substituted alkyl or CONR.sub.1 R.sub.2, and n is 0 to 6, can be used to harden gelatin. The compounds are particularly useful for hardening gelatin of a photographic element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.