发明授权
- 专利标题： Recovery of silver from photographic films by high shear conditions
- 专利标题（中）： 通过高剪切条件从照相胶片回收银
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申请号： US693252申请日： 1985-01-22
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公开(公告)号： US4612057A公开(公告)日： 1986-09-16
- 发明人: Kenneth R. Buser , Thomas A. Rettig
- 申请人： Kenneth R. Buser , Thomas A. Rettig
- 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： C22B11/02
- IPC分类号： C22B11/02 ; G03C11/24 ; B08B7/04
摘要：
A method for the recovery of silver from photographic film having a polyester base and a macromolecular organic polymer coating to which is adhered a light sensitive silver emulsion layer. The process includes mixing small film pieces in a hot aqueous liquid having a solids concentration level of at least 25 percent by volume. The mixture is subjected to conditions of high shear to remove the silver emulsion. The liquid containing the silver emulsion is then separated from the film pieces and the silver is recovered from the liquid.
公开/授权文献
- US5869532A Taurine derivatives for use in cleanser compositions 公开/授权日：1999-02-09
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