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彩色电影、电视技术的日益普及,提出了生产更多更好考贝的要求。目前部分彩色胶片的凝胶感光膜凝固点较低,要求在20℃进行冲洗,如温度过高,容易发生软化甚至脱落。利用二醛类化合物作为彩色胶片的前坚膜剂,可增强胶片彩色感光层的机械强度,提高冲洗温度及速度。直接合成二醛类化合物较困难,且性质不稳定,不便保管和贮存.2,5—二甲氧基四氢呋喃是缩二醛结构,在酸性水溶液中很易水解为丁二醛,是制备二醛类化合
Color film, the increasing popularity of television technology, put forward to produce more and better test requirements. At present, some gel films of the color film have a lower freezing point and require flushing at 20 ° C. If the temperature is too high, softening or even falling off easily occurs. The use of dialdehydes as a precursor film to color films enhances the mechanical strength of the film’s color-sensitive layer and increases the processing temperature and speed. Direct synthesis of dialdehyde compounds is more difficult and unstable in nature, inconvenient storage and storage .2,5-dimethoxytetrahydrofuran is a dialdehyde structure, in acidic aqueous solution is easily hydrolyzed succinaldehyde, is the preparation of dialdehyde Class compound