发明名称 |
Half esters of isobutylene/maleic anhydride copolymer as attenuators of photographic film development |
摘要 |
A photographic film with a polymeric acid-reacting neutralizing layer comprising a half ester of isobutylene/maleic anhydride copolymer is provided herein. This polymeric acid-reacting neutralizing layer is used to attenuate a photographic film's development process, which is effective under alkali conditions, by lowering the pH of the alkaline processing composition.
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申请公布号 |
US2003039855(A1) |
申请公布日期 |
2003.02.27 |
申请号 |
US20010896690 |
申请日期 |
2001.06.29 |
申请人 |
FEHERVARI AGOTA F.;GRIMM WILLIAM L. |
发明人 |
FEHERVARI AGOTA F.;GRIMM WILLIAM L. |
分类号 |
C08K3/22;C08L23/26;G03C8/52;(IPC1-7):G03C8/52;B32B27/30;B32B27/32;G03C5/26;G03C5/39 |
主分类号 |
C08K3/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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