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1. 发明公开

EP0838724A3 Benzotriazole-based UV absorbers and photographic elements containing them 失效
标题翻译：苯并三唑系紫外线增白剂和含有这些照相元件
公开(公告)号：EP0838724A3
公开(公告)日：1999-02-03
申请号：EP97203165.2
申请日：1997-10-11
申请人： EASTMAN KODAK COMPANY
发明人： Vishwakarma, Lal Chand, c/o Eastman Kodak Compagny , Brown, Glenn Monroe, c/o Eastman Kodak Compagny
IPC分类号： G03C1/815 , C07D249/20
CPC分类号： C07D249/20 , G03C1/8155 , Y10S430/132
摘要： An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber:
wherein:
R 4 is a substituted alkyl group, R 4 may be further joined to either L or A* forming a ring and the benzo or phenyl ring shown may be further substituted or unsubstituted; L is a bivalent linking group; p is 0 or 1; A* is an alkyl group having an asymmetric carbon or asymmetric silicon atom, and;
wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.

2. 发明授权

EP0838724B1 Benzotriazole-based UV absorbers and photographic elements containing them 失效
标题翻译：苯并三唑系紫外线增白剂和含有这些照相元件
公开(公告)号：EP0838724B1
公开(公告)日：2002-07-17
申请号：EP97203165.2
申请日：1997-10-11
申请人： EASTMAN KODAK COMPANY
发明人： Vishwakarma, Lal Chand, c/o Eastman Kodak Compagny , Brown, Glenn Monroe, c/o Eastman Kodak Compagny
IPC分类号： G03C1/815 , C07D249/20
CPC分类号： C07D249/20 , G03C1/8155 , Y10S430/132

3. 发明公开

EP0838724A2 Benzotriazole-based UV absorbers and photographic elements containing them 失效
标题翻译： Auf Benzotriazol basierende UV-Aufheller und photoische Elemente，welche diese enthalten
公开(公告)号：EP0838724A2
公开(公告)日：1998-04-29
申请号：EP97203165.2
申请日：1997-10-11
申请人： EASTMAN KODAK COMPANY
发明人： Vishwakarma, Lal Chand, c/o Eastman Kodak Compagny , Brown, Glenn Monroe, c/o Eastman Kodak Compagny
IPC分类号： G03C1/815 , C07D249/20
CPC分类号： C07D249/20 , G03C1/8155 , Y10S430/132
摘要： An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber:
wherein:

R 4 is a substituted alkyl group, R 4 may be further joined to either L or A* forming a ring and the benzo or phenyl ring shown may be further substituted or unsubstituted;
L is a bivalent linking group;
p is 0 or 1;
A* is an alkyl group having an asymmetric carbon or asymmetric silicon atom, and;
wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.
摘要翻译：照相元件包括式（I）的紫外线吸收化合物; （其中R4 =（un）取代的烷基; R4可以进一步连接到形成环的L或A *，苯并或苯环可以进一步（未）取代; L =二价连接基团; p = 0或1 ; A * =具有不对称碳或硅原子的烷基，紫外线吸收化合物（I）是不对称碳原子或硅原子上的两种对映异构体的混合物，优选紫外线吸收化合物为60/40-40 / 60种两种对映异构体的混合物，该元件还包括感光卤化银乳剂层和非感光层，紫外线吸收剂位于非光敏层中，优选位于所有光敏层之上，照相元素还包括反射支撑体和卤化银乳剂层，或者，紫外线吸收化合物位于卤化银乳剂层中或位于比卤化银emu更远离支持体的层中 lsion层。照相元件另外优选包含荧光增白剂，其优选在350-410nm范围内吸收紫外线，以便在400-500nm处发荧光。紫外线吸收剂的含量为0.2-10g / m 2。或者，紫外线吸收化合物（I）是两种对映异构体的50/50混合物。

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