61005-79-6

Usage

Uses

Used in Polymer Production:
2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is used as a monomer for the synthesis of polyimide and polybenzoxazole materials, which are known for their exceptional thermal stability and mechanical properties.
Used in Electronics Industry:
In the electronics industry, 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is utilized in the manufacturing of electronic components that require high thermal stability and excellent mechanical properties.
Used in Aerospace Industry:
2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is employed in the production of aerospace components, where its high thermal stability and mechanical properties are crucial for performance and safety.
Used in Film and Coating Production:
2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is used as a key ingredient in the production of high-performance films and coatings, benefiting from its thermal stability and mechanical properties.
Used in Automotive and Construction Industries:
2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is used in the automotive and construction industries for its flame-retardant properties, enhancing safety in these applications.
Used in Medical and Pharmaceutical Applications:
Due to its biocompatibility and low toxicity, 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane has potential uses in medical and pharmaceutical fields, where such properties are highly desirable.

Upstream product

• 7440-44-0 pyrographite 
• 73340-33-7 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane 
• 83558-87-6 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane 

Downstream Products

• 3016-76-0 1,1,1,3,3,3-hexafluoro-2,2-di(3,4-dicarboxyphenyl)-propane 
• 1107-00-2 4,4'-(1,1,1,3,3,3-hexafluoroisopropylidene)diphthalic anhydride 

Relevant academic research and scientific papers

Synthesis method of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride

The invention belongs to the technical field of synthesis of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride, in particular to a synthesis method of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride. The synthesis method has the advantages of easy separation of intermediate products, high yield, less waste and good economic benefit, and a mixed solvent of isobutanol and butyl acetate is adoptedto reduce the solubility of the product, facilitate the separation of the product and increase the yield. Besides, the Pd/C catalyst is pretreated, a proper amount of sulfide is added for pretreatment, the sulfur poisoning resistance of the catalyst is improved, the service life of the catalyst is prolonged, and the application frequency of the catalyst is increased; because nitro compounds contain trace amount of sulfides such as sulfuric acid and like, catalyst is easily poisoned. In the step 2, an alumina-silica gel catalyst is added so that 2, 2-bis (3-amino-4-hydroxyphenyl) molecules canbe adsorbed on the surface of the catalyst in a flat shape, hydroxyl is closer to the surface of the catalyst, and the amination reaction of hydroxyl is facilitated; in the step 4, a small amount of urea is added in the cyanolysis reaction to prevent diazonium salt from being oxidized, becoming tar and other side reactions.

Synthesis process of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride

The invention belongs to the technical field of synthesis of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride, in particular to a synthesis process of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride. The synthesis process has the advantages of easy separation of intermediate products, high yield, less waste and good economic benefit, adopts a mixed solvent of long-chain alcohol and ester, reduces the solubility of the product, is beneficial to product separation, and has higher yield. Besides, the Pd/C catalyst is pretreated, a proper amount of sulfide is added for pretreatment, the sulfurpoisoning resistance of the catalyst is improved, the service life of the catalyst is prolonged, and the application frequency of the catalyst is increased; because nitro compounds contain trace amount of sulfides such as sulfuric acid and like, catalyst is easily poisoned. In the step 2, an alumina-silica gel catalyst is added so that 2, 2-bis (3-amino-4-hydroxyphenyl) molecules can be adsorbed on the surface of the catalyst in a flat shape, hydroxyl is closer to the surface of the catalyst, and the amination reaction of hydroxyl is facilitated; in the step 4, a small amount of urea is addedin the cyanolysis reaction to prevent diazonium salt from being oxidized, becoming tar and other side reactions.

Preparation process of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride

The invention belongs to the technical field of synthesis of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride, in particular to a preparation process of 4, 4-(hexafluoroisopropenyl) diphthalic anhydride. The preparation process has the advantages of easy separation of intermediate products, high yield, fewer wastes and favorable economic benefit, and adopts a mixed solvent of amyl alcohol and butyl acetate to lower the solubility of the product, thereby being beneficial to product separation and higher yield. Besides, the Pd/C catalyst is pretreated, a proper amount of sulfide is added for pretreatment, the sulfur poisoning resistance of the catalyst is improved, the service life of the catalyst is prolonged, and the application frequency of the catalyst is increased; because nitro compounds contain trace amount of sulfides such as sulfuric acid and like, catalyst is easily poisoned. In the step 2, an alumina-silica gel catalyst is added so that 2, 2-bis (3-amino-4-hydroxyphenyl) molecules can be adsorbed on the surface of the catalyst in a flat shape, hydroxyl is closer to the surface of the catalyst, and the amination reaction of hydroxyl is facilitated; in the step 4, a small amount of urea is added in the cyanolysis reaction to prevent diazonium salt from being oxidized, becoming tar and other side reactions.

Derivatives of 2,2-bis-(3-aminophenyl)hexafluoropropane and process for the preparation of 2,2-bis-(3,4-diaminophenyl)hexafluoropropane

The invention relates to compounds of the formula STR1 wherein R1 is hydrogen or an acyl group in which a non-aromatic hydrocarbon group of 1 to 6 carbon atoms is attached to the CO-group and R2 is H or NO2, if R1/su