The present invention discloses a class of N substituted alkyl carbazole ligands, which are used as photoinitiator in cationic photopolymerization, and belong to the field of organic synthesis and cationic photopolymerization. The compounds with two ferrocene and N-alkyl substituted carbazole as raw material, through the Lewis acid catalyzed ligand exchange reaction occurred prepared. The preparation method of the compound is simple and convenient, and the raw materials are easy to obtain. As cationic photoinitiator, the compounds have excellent UV absorption and light induced activity, which can lead to the polymerization of epoxy compounds and vinyl ethers. The introduction of alkyl causes the solubility of these compounds in non-polar resins to be enhanced significantly, and has broad research potential and application prospect in the field of light curing applications.
【技术实现步骤摘要】
本专利技术涉及一类含有咔唑及在氮原子上有不同长度碳链的烷基取代的咔唑基团的阳离子 光聚合引发剂的制备和应用,属于有机合成和阳离子光聚合
技术介绍
紫外光(UV)固化具有固化速度快、节省能源、无环境污染、涂层性能优异、经济效益高等特点。最早研究的uv固化体系是自由基光固化体系,与其相比,阳离子光固化体系具有以下突出特点①光引发阳离子聚合的单体和预聚体种类多;②不受氧阻聚;③阳离子光聚合是活性聚合o口 自由'基型光引发剂种类众多,且发展已比较成熟,而阳离子型的光引发剂种类较少,常 用的为二芳基碘鎗盐和三芳基硫鐺盐,但大多数碘鎗盐和硫鎗盐在300nm以上很少或几乎没 有吸收,不能与一些常用的光源相匹配,严重限制了阳离子光聚合的应用。芳茂铁盐具有光引发活性是在1986年首次被提出的(Meier K and Zweifel H, J Image Sci, 1986,30:174-176)。由于它们具有良好的热稳定性和在近紫外和可见光区的较强吸收, 受到人们的重视,通过改变芳茂铁盐配体的结构,可以改变其吸收光谱和光引发活性。随着光固化技术的迅速发展及其应用领域的愈 ...
【技术保护点】
一类含N-烷基取代咔唑配体的茂铁盐化合物,其特征在于化学结构通式如下式: *** R为H、或R为C=1-14的烷基,非亲核性阴离子,如SbF↓[4]↑[-],AsF↓[6]↑[-],PF↓[6]↑[-],BF↑[-]↓[4],C F↓[3]SO↓[3]↑[-]或CH↓[3]SO↓[3]↑[-]。
【技术特征摘要】
【专利技术属性】
技术研发人员:王涛,张影,汉森,
申请(专利权)人:北京化工大学,
类型:发明
国别省市:11[中国|北京]
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