发明授权
US5264317A Oxygen barrier coated photographic coupler dispersion particles for
enhanced dye-stability
失效
用于增强染料稳定性的隔氧涂层照相胶料分散体颗粒
- 专利标题: Oxygen barrier coated photographic coupler dispersion particles for enhanced dye-stability
- 专利标题(中): 用于增强染料稳定性的隔氧涂层照相胶料分散体颗粒
-
申请号: US974768申请日: 1992-11-12
-
公开(公告)号: US5264317A公开(公告)日: 1993-11-23
- 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: G03C1/00
- IPC分类号: G03C1/00 ; G03C7/396 ; G03C1/04
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.