- Preparation method of alpha-oximido acetophenone derivative
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The invention discloses a preparation method of an alpha-oximido acetophenone derivative. The method comprises the following steps: adding acetophenone derivatives, ethyl acetate and hydrochloric acidinto a reaction kettle; after stirring and complete dissolution, introducing hydrogen chloride gas, adding nitrite at the temperature of 0-50 DEG C, keeping the temperature for 1-10 hours after feeding is finished, then washing with water, adjusting the pH value to be neutral, distilling ethyl acetate, and adding cyclohexane for crystallization after distillation is finished so as to obtain the alpha-oximido acetophenone derivative. According to the preparation method of the alpha-oximido acetophenone derivative, recycling of the solvent ethyl acetate can be achieved, the yield can be obviously increased by 90% or above, and the purity of a target object reaches 98% or above; the reaction is green and safe, and the raw material cost is low.
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Paragraph 0018-0020
(2020/06/20)
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- Ketone oxime ester photoinitiator green synthetic method
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The present invention discloses a ketone oxime ester photoinitiator green synthetic method. According to the method, diphenyl sulfide as a raw material is condensed with caprylyl chloride under the effect of a zirconium catalyst, and then a ketone oxime ester photoinitiator can be obtained by oximation and esterification. The method does not relate to high temperature and high pressure reaction, and is mild in reaction conditions, and good in security. No aluminum chloride or zinc waste water is produced due to use of the zirconium catalyst during the synthesis process, produced byproducts can be recycled, no environmentally harmful solvent is used, and the ketone oxime ester photoinitiator green synthetic method is environmentally friendly, and therefore suitable for industrial production.
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Paragraph 0031; 0032; 0033
(2016/11/14)
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- OXIME ESTER COMPOUND AND A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING THE SAME
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The present invention relates to an oxime ester-based compound and a photopolymerizable composition comprising the same. More particularly, the present invention relates to a photopolymerizable composition comprising a photopolymerizable compound and a ph
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Paragraph 0099-0101; 0105
(2016/10/27)
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- OXIME ESTER COMPOUND AND A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING THE SAME
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The present invention relates to an oxime ester-based compound and a photopolymerizable composition comprising the same. More particularly, the present invention relates to a photopolymerizable composition comprising a photopolymerizable compound and a ph
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Paragraph 0107-0109
(2016/11/02)
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- OXIME ESTER COMPOUND AND A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING THE SAME
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Disclosed herein is an oxime ester compound and a photopolymerizable composition comprising the same, more specifically, a photopolymerizable composition comprising photopolymerizable compound and photoinitiator, wherein the photoinitiator comprises oxime
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- OXIME ESTER COMPOUND AND A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING THE SAME
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Disclosed herein is an oxime ester compound and a photopolymerizable composition comprising the same, more specifically, a photopolymerizable composition comprising a photopolymerizable compound and a photoinitiator, wherein the photoinitiator comprises o
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Page/Page column 12
(2017/02/24)
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- OXIME ESTER COMPOUND AND A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING THE SAME
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The present invention relates to an oxime ester-based compound and a photopolymerizable composition comprising the same and, more specifically, to a photopolymerizable composition comprising a photopolymerizable compound and a photopolymerization initiato
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Paragraph 0098-0100; 0104
(2016/10/10)
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