857284-89-0Relevant academic research and scientific papers
Diamine compound, polyimide, optical film and its preparation method (by machine translation)
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Paragraph 0085; 0086; 0087, (2017/08/29)
Is provided which has good solubility, higher optical transmittance of the optical thin film. By adopting the specific diamine compound with the tetracarboxylic dianhydride made polyamide acid; polyamide acid dehydration closed-loop obtaining a polyimide, then further made transparent polyimide film. The thin film can be used for opto-electronic device, solar cell device, a flexible display device, electronic book, the electronic label or photoelectric sensor. (by machine translation)
1, 4-bis (bromodifluoromethyl ) tetrafluorobenzene and producing method thereof
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Page/Page column 3, (2009/07/17)
A method for producing 1,4-bis(bromodifluoromethyl)tetrafluorobenzene (BFTFB) is disclosed. The target compound is predicted as a very potent monomer for low dielectric constant material. This method comprises the following steps: (a) mixing 1,4-bis(bromo
Perfluoroparacyclophane and methods of synthesis and use thereof
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Page/Page column 5-6, (2008/12/08)
A composition comprising perfluoro-[2,2]-paracyclophane dimer compound is disclosed. The synthesis reaction of the paracyclophane dimer from 1,4-bis(chlorodifluoromethane)-2,3,5,6-tetrafluorobenzene involves heating in the presence of a metal catalyst and a solvent. A perfluorinated paraxylylene coating formed from the perfluorinated paracyclophane dimer is also disclosed.
Synthesis of perfluoro[2.2]paracyclophane
Dolbier Jr., William R.,Xie, Puhui,Zhang, Lianhao,Xu, Wei,Chang, Ying,Abboud, Khalil A.
, p. 2469 - 2472 (2008/09/19)
(Chemical Equation Presented) A synthesis of perfluoro[2.2]paracyclophane has been sought ever since the partially fluorinated octafluoro[2.2]- paracyclophane (AF4) was prepared and its chemistry studied. This compound has now been prepared in 39% yield from the precursor, 1,4-bis(chlorodifluoromethyl) -2,3,5,6-tetrafluorobenzene by its reaction with Zn when heated in acetonitrile at 100°C. Two preparations of the precursor, first from 1,4-dicyano-2,3,5,6- tetrachlorobenzene and an improved method beginning from 1,2,4,5- tetrachlorobenzene, are also described as are key comparisons to our related synthesis of AF4.
