Invention Grant
- Patent Title: Iron complexes and bleaching baths containing same
- Patent Title (中): 铁络合物和含有相同的漂白浴
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Application No.: US571504Application Date: 1990-08-22
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Publication No.: US5009985APublication Date: 1991-04-23
- Inventor: Friedrich-Wilhelm Kunitz , Ralf Wichmann
- Applicant: Friedrich-Wilhelm Kunitz , Ralf Wichmann
- Applicant Address: DEX Leverkusen
- Assignee: Agfa-Gevaert Aktiengesellschaft
- Current Assignee: Agfa-Gevaert Aktiengesellschaft
- Current Assignee Address: DEX Leverkusen
- Main IPC: C07C229/18
- IPC: C07C229/18 ; C07C309/49 ; C07C311/42 ; G03C7/42
Abstract:
Iron(III)-complexes of compounds of the formula ##STR1## wherein R.sub.1 denotes a substituent,m denotes 1 or 2 andn denotes 0, 1 or 2are valuable and biodegradable bleaching agents for photographic elements.
Public/Granted literature
- US5622679A Extraction of rare earth elements using alkyl phosphinic acid or salt/tetraalkylammonium salt as extractant Public/Granted day:1997-04-22
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