发明授权
US5185230A Oxygen barrier coated photographic coupler dispersion particles for
enhanced dye-stability
失效
用于增强染色稳定性的氧气屏障涂层摄影偶联剂颗粒
- 专利标题： Oxygen barrier coated photographic coupler dispersion particles for enhanced dye-stability
- 专利标题（中）： 用于增强染色稳定性的氧气屏障涂层摄影偶联剂颗粒
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申请号： US753527申请日： 1991-09-03
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公开(公告)号： US5185230A公开(公告)日： 1993-02-09
- 发明人: Pranab Bagchi , James L. Edwards , Wendell F. Smith, Jr. , Brian Thomas
- 申请人： Pranab Bagchi , James L. Edwards , Wendell F. Smith, Jr. , Brian Thomas
- 申请人地址： NY Rochester
- 专利权人： Eastman Kodak Company
- 当前专利权人： Eastman Kodak Company
- 当前专利权人地址： NY Rochester
- 主分类号： G03C1/04
- IPC分类号： G03C1/04 ; G03C1/00 ; G03C1/06 ; G03C7/396
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.
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