发明名称 |
Oxygen barrier coated photographic agent milled dispersion particles for enhanced dye-stability |
摘要 |
The invention creates a selective oxygen barrier around individual coupler or other photographically active particles by surrounding each particle with a layer of water applicable oxygen barrier polymer such as polyvinyl alcohol (PVA), which will also act as a steric barrier to coalescence of the particles. Photographic products formed with such materials are more dye stable. The dispersions of this invention are prepared by mechanical milling or homogenization procedures.
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申请公布号 |
US5565309(A) |
申请公布日期 |
1996.10.15 |
申请号 |
US19940292646 |
申请日期 |
1994.08.18 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
BAGCHI, PRANAB;FLOW, III, VINCENT J.;MARTINEZ, ALBERTO M. |
分类号 |
G03C1/06;B01D3/12;G03C1/00;G03C1/005;G03C7/32;G03C7/388;(IPC1-7):G03C5/18;G03C5/26 |
主分类号 |
G03C1/06 |
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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