发明授权
US4481359A Silver halide emulsion containing a purified cysteine-glutaraldehyde
polymer fraction and process of making
失效
含有纯化的半胱氨酸 - 戊二醛聚合物部分的卤化银乳剂及其制备方法
- 专利标题: Silver halide emulsion containing a purified cysteine-glutaraldehyde polymer fraction and process of making
- 专利标题(中): 含有纯化的半胱氨酸 - 戊二醛聚合物部分的卤化银乳剂及其制备方法
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申请号: US336766申请日: 1982-01-04
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公开(公告)号: US4481359A公开(公告)日: 1984-11-06
- 发明人: Jacob Beutel , Raymond J. LeStrange
- 申请人: Jacob Beutel , Raymond J. LeStrange
- 申请人地址: DE Wilmington
- 专利权人: E. I. Du Pont de Nemours and Company
- 当前专利权人: E. I. Du Pont de Nemours and Company
- 当前专利权人地址: DE Wilmington
- 主分类号: G03C1/10
- IPC分类号: G03C1/10 ; C07D277/06 ; C07D513/04 ; C07D519/00 ; C08G12/06 ; C08G69/42 ; G03C1/04 ; G03C5/29
摘要:
From the complex reaction mixture of cysteine and glutaraldehyde a low molecular weight polymer is recovered for use as an additive to silver halide emulsions and developers to increase speed. Iron and nickel complexes of the purified low molecular weight polymer are similarly useful for silver halide emulsions.
公开/授权文献
- US5717760A Message protection system and method 公开/授权日:1998-02-10
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