A kind of photosensitive resin composition and its application
A photosensitive resin and photosensitive resin layer technology, applied in the field of photocuring, can solve the problems of photosensitizer precipitation and unsatisfactory solubility, and achieve the effects of stable photosensitivity, fast and efficient pattern formation, and excellent printability.
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[0040] The synthetic method of the benzidine derivative shown in general formula (I), comprises the following steps:
[0041] (1) raw material a and raw material b are reacted to obtain intermediate a;
[0042] (2) Intermediate a and raw material c are reacted in an organic solvent containing a catalyst to obtain intermediate b;
[0043] (3) raw material d and raw material e obtain intermediate c through catalyst catalytic reaction under the protection of nitrogen;
[0044] (4) Intermediate b and intermediate c are catalyzed by a catalyst to obtain a product under the protection of nitrogen;
[0045] The reaction equation is as follows:
[0046]
[0047] In the case of knowing the above reaction scheme, the specific reaction conditions in steps (1)-(4) can be easily determined by those skilled in the art.
[0048] The reaction of step (1) can be carried out under catalyst-free and solvent-free conditions. The reaction temperature varies slightly depending on the type of...
specific Embodiment approach
[0061] The present invention will be described in further detail below in conjunction with specific examples, but they should not be construed as limiting the protection scope of the present invention.
[0062] Component D is the preparation of the benzidine derivative shown in general formula (I)
Embodiment 1
[0064] (1) Preparation of intermediate a1
[0065]
[0066] Add 140.5 g of p-methylbenzyl chloride and 199.2 g of triethyl phosphite into a 500 ml four-necked flask, stir and raise the temperature to 80-90° C., and react for 3 hours. Control in GC until p-methylbenzyl chloride is less than 1%, and the reaction ends. Distill at 90°C atmospheric pressure to remove the reaction by-product ethyl chloride, continue to distill under reduced pressure to remove unreacted triethyl phosphite, after no fraction is removed, cool down to 30°C, release 212g of the material in the kettle, namely the intermediate a1, 98% purity.
[0067] The structure of intermediate a1 was confirmed by LCMS.
[0068] Mass spectrometry was used to obtain 243 and 244 molecular fragment peaks with the help of the software attached to the instrument, and the molecular weight of the product was 242, which was consistent with T+1 and T+2.
[0069] (2) Preparation of intermediate b1
[0070]
[0071] Add ...
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