发明授权
- 专利标题: Overcoat for reticulation control in photographic elements
- 专利标题(中): 外套用于摄影元件的网状控制
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申请号: US313556申请日: 1999-05-14
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公开(公告)号: US6153362A公开(公告)日: 2000-11-28
- 发明人: Mridula Nair , Lloyd A. Lobo , Tamara K. Jones
- 申请人: Mridula Nair , Lloyd A. Lobo , Tamara K. Jones
- 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: G03C5/29
- IPC分类号: G03C5/29 ; G03C1/047 ; G03C1/76 ; G03C7/407 ; G03C1/91 ; G03C8/15 ; G03C1/89 ; G03C11/08
摘要:
A photographic element containing a support; at least two contiguous layers, at least one of which is a silver halide emulsion layer superposed on a side of said support; a processing solution permeable protective overcoat containing a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent; a crosslinker for the said copolymer; and a second polymer selected from the group consisting of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates and gums overlying the said at least two contiguous layers; and wherein the ratio of the gelatin to non-gelatin content of the dried layers immediately underlying the uppermost gelatin layer is less than 1.3 with the proviso that the water content of the wet coating of all the gelatin layers prior to drying is at a coverage of greater than 53 g/m.sup.2.
公开/授权文献
- US5506241A Argatroban preparations for ophthalmic use 公开/授权日:1996-04-09