61005-79-6

Basic information

• Product Name: 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane
• Synonyms: 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane
• CAS NO: 61005-79-6
• Molecular Weight: 364.293
• Mol File: 61005-79-6.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane(61005-79-6)
• EPA Substance Registry System: 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane(61005-79-6)

Safety Data

• Hazardous Substances Data: 61005-79-6(Hazardous Substances Data)

Usage

General Description

2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is a chemical compound composed of two 3,4-di-o-aminophenyl groups attached to a hexafluoropropane molecule. It is commonly used as a monomer in the production of polyimide and polybenzoxazole materials, which have high thermal stability and excellent mechanical properties. 2,2-bis(3,4-di-o-aminophenyl)hexafluoropropane is also utilized in the manufacturing of electronic and aerospace components, as well as in the production of high-performance films and coatings. It is known for its flame-retardant properties and has applications in the automotive and construction industries. Additionally, it has potential uses in medical and pharmaceutical applications due to its biocompatibility and low toxicity.

Upstream product

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

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 articles and documents

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.

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.