A negative-working lithographic printing plate precursor is disclosed including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, and (ii) a coating including a photopolymerisable layer including a photoinitiator and a polymerizable compound, characterised in that the photoinitiator includes at least one structural moiety including an oligo- or poly(alkyleneglycol).
Synthesis and identification of organosoluble polyamides bearing a triaryl imidazole pendent: Thermal, photophysical, chemiluminescent, and electrochemical characterization with a modified carbon nanotube electrode
作者:M. Ghaemy、S.M. Amini Nasab
DOI:10.1016/j.reactfunctpolym.2010.02.004
日期:2010.5
A novel monomer containing a triaryl imidazole pendent group was successfully synthesized by nucleophilic substitution of bisphenol A with 2-(2-chloro-5-nitrophenyl)-4,5-diphenyl-1H-imidazole (I). A series of new polyamides (PAs) with inherent viscosities of 0.95-1.2 dL/g was prepared by direct polycondensation of the diamine with various dicarboxylic acids. These PAs were readily soluble in many organic solvents and gave tough and flexible films by solution casting. These PM exhibited T(g)s between 189 degrees C and 252 degrees C, and 10% weight loss temperatures in excess of 400 degrees C with up to 68% char yield at 600 degrees C in air. All of the PAs emitted a greenish-yellow light in dilute THF solution, with photoluminescence (PL) quantum yields in the range of 10-25%. The chemiluminescent activity and electrochemical oxidation of the PAs were also investigated. (c) 2010 Elsevier Ltd. All rights reserved.
Synthesis and characterization of new imidazole and fluorene–bisphenol based polyamides: Thermal, photophysical and antibacterial properties
displacement reaction of the synthesized 2-(2-chloro-5-nitrophenyl)-4,5-diphenyl-1H-imidazole with 9,9-bis(4-hydroxyphenyl)fluorene in refluxing DMAc in the presence of potassium carbonate. This diamine was condensed directly with aliphatic and aromatic diacids via the Yamazaki–Higashi phosphorylation method in the presence of triphenylphosphite (TPP), pyridine (Py) and halide salt to give high molecular polyamides
摘要一种新型的对位联二醚-二胺,9,9-双4- [2-(4,5-二苯基咪唑-2-基)-4-氨基苯氧基]苯基}芴(III),带有芴-双酚和两个通过催化还原化合物(II)的硝基,合成9,9-双4- [2-(4,5-二苯基咪唑-2-基)-4-硝基苯氧基]邻位连接的二芳基取代的咪唑环通过在Pd / C存在下使用一水合肼来合成]苯基}芴。通过合成的2-(2-氯-5-硝基苯基)-4,5-二苯基-1H-咪唑与9,9-双(4-羟苯基)芴的回流亲核氯置换反应合成化合物(II)在碳酸钾存在下的DMAc。该二胺在三苯基亚磷酸酯(TPP)存在下,通过Yamazaki-Higashi磷酸化方法与脂肪族和芳香族二酸直接缩合,吡啶(Py)和卤化物盐可制得高分子聚酰胺(PAs)。以定量收率获得合成PA,固有粘度在0.51至0.76 dL g -1之间。通过元素分析,FT-IR和NMR光谱对二胺和PA的结构进行了表征,
[EN] A LITHOGRAPHIC PRINTING PLATE PRECURSOR<br/>[FR] PRÉCURSEUR DE PLAQUE D'IMPRESSION LITHOGRAPHIQUE
申请人:AGFA NV
公开号:WO2018192932A1
公开(公告)日:2018-10-25
A negative-working lithographic printing plate precursor is disclosed including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, and (ii) a coating including a photopolymerisable layer including a photoinitiator and a polymerizable compound, characterised in that the photoinitiator includes at least one structural moiety including an oligo- or poly (alkyleneglycol).