A photographic element comprising a support having thereon at least one layer comprising a polymer obtained by copolymerizing a repeating unit represented by the following general formula (I) and a copolymerizable cellulose derivative represented by the following general formula (II):
wherein A represents a repeating unit derived from an ethylenically unsaturated monomer having -COOH group, -SO3H group or -PO(OH)2 group in the molecular structure; and B represents a repeating unit derived from a copolymerizable ethylenically unsaturated monomer;
wherein (R1)s each independently represents (i) a hydrogen atom, (ii) a monovalent organic bonding group such as an ester group or an ether group or (iii) a monovalent organic bonding group represented by the following general formula (III), with the proviso that (R1)s do not all hydrogen atom at the same time; and n represents a number of 20 to 800;
wherein R2 represents hydrogen atom or an alkyl group having 1 to 6 carbon atoms; and L represents a bivalent organic bonding group, and wherein the percentage by weight of the component represented by general formula (I) in the copolymer is from 5 to 95; the percentage by weight of the component represented by general formula (III) based on the weight of the component represented by general formula (II) is from 0.00001 to 10; x and y represent each the percentage by weight of each monomer component in the copolymer and x is in the range of 1 to 95 and y is in the range of 5 to 99.
一种照相元件,包括一个支撑体,支撑体上至少有一层,该层包括由以下通式(I)表示的重复单元和以下通式(II)表示的可共聚
纤维素衍
生物共聚而成的聚合物:
其中 A 代表由
乙烯基不饱和单体衍生的重复单元,其分子结构中具有-COOH 基团、-SO3H 基团或-PO(OH)2 基团;B 代表由可共聚的
乙烯基不饱和单体衍生的重复单元;
其中(R1)s 各自独立地代表(i)氢原子,(ii)一价有机键合基团,如酯基或醚基,或(iii)由下式通式(III)代表的一价有机键合基团,但(R1)s 并非同时都是氢原子;n 代表 20 至 800 之间的数字;
其中 R2 代表氢原子或具有 1 至 6 个碳原子的烷基;和 L 代表二价有机键基,其中通式(I)所代表的组分在共聚物中的重量百分比为 5 至 95;通式(III)所代表的组分相对于通式(II)所代表的组分的重量百分比为 0.00001 至 10;x 和 y 分别代表各单体组分在共聚物中的重量百分比,x 在 1 至 95 的范围内,y 在 5 至 99 的范围内。