69563-88-8Relevant articles and documents
Synthesis process of 2-bis [4-(4-aminophenoxy) phenyl] hexafluoropropane
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Paragraph 0021-0032, (2021/02/10)
The invention relates to the technical field of 2, 2-bis [4-(4-aminophenoxy) phenyl] hexafluoropropane, in particular to a synthesis process of 2-bis [4-(4-aminophenoxy) phenyl] hexafluoropropane. Themethod comprises the following steps: dissolving hexafluorobisphenol A in a mixed solvent of dimethylformamide and benzene, adding potassium carbonate, carrying out reflux dehydration, adding 4-nitrochlorobenzene for reflux, filtering and precipitating to obtain 2, 2-bis [4- (4-nitrophenoxy) phenyl] hexafluoropropane, dissolving the 2, 2-bis [4-(4-nitrophenoxy) phenyl] hexafluoropropane into monohydric alcohol, refluxing with hydrazine hydrate under the catalysis of ferric trichloride and an activated carbon reduction catalyst, cooling and filtering to obtain the 2, 2-bis [4- (4-aminophenoxy)phenyl] hexafluoropropane. By comparing six embodiments, the treatment time of the sixth embodiment is the longest, but the yield of 2, 2-bis [4-(4-aminophenoxy) phenyl] hexafluoropropane is the highest, the safety of the technological process is higher, and the working experience of workers is improved.
A low-temperature process for preparing 2, 2 - di (4 - (4 - aminophenoxy) phenyl) hexafluoropropane and intermediates thereof
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Paragraph 0052-0058, (2017/09/02)
The present invention provides a method for preparing a 2,2-di(4-(4-aminophenoxy)phenyl)hexafluoropropane intermediate body at a low temperature. 2,2-di(4-hydroxylphenyl)hexafluoropropane and para-halogenated nitrobenzene are reacted in the presence of a solvent, a catalyst and copper powder to obtain 2,2-di(4-(4-nitrylphenoxy)phenyl)hexafluoropropane. The present invention further provides a method for preparing the 2,2-di(4-(4-aminophenoxy)phenyl)hexafluoropropane at a low temperature. According to the method, a reaction can be carried out at the low temperature and can be realized at 20-40 DEG C; and the reaction time is short and the preparation of the intermediate body can be finished by only 10 hours. By virtue of the method provided by the present invention, the yield of products can be increased and is higher than 79.9%, and the purity of the product is high and is higher than 99.7%; and meanwhile, the production cost is reduced.
Thermoplastic resin composition and a method of molding the same
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, (2008/06/13)
This invention provides a thermoplastic resin composition comprising a thermoplastic resin and 0.1 to 100 parts by weight, per 100 parts by weight of the thermoplastic resin, of an imide compound prepared, e.g., by dehydration condensation of 1,2,3,4-butanetetracarboxylic acid or a monoanhydride or a dianhydride thereof with a primary amine, and a method of molding the resin composition.