申请人:Eastman Kodak Company
公开号:US05411856A1
公开(公告)日:1995-05-02
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.
式(I)所表示的新化合物为:##STR1## 其中,R1和R2代表氢或烷基,R3代表氢、烷基、取代烷基或CONR1R2,n为0至6。这些化合物可用于使明胶变硬。这些化合物特别适用于使摄影元素中的明胶变硬。