Ossila 1,4-Bis(4-amino-2-trifluoromethylphenoxy)benzene (6FAPB) B2071

1,4-Bis(4-amino-2-trifluoromethylphenoxy)benzene (6FAPB), CAS 94525-05-0, is a fluorinated diamine building block supplied at >99% purity as a white to off-white powder or crystal. Structurally it is an aminophenyl ether carrying two trifluoromethyl groups positioned meta to the amine groups, and it serves mainly as a monomer for polyimide synthesis.

Polyimides prepared from 6FAPB are reported to combine high thermal resistance (5% thermal weight loss at 525 °C), strong mechanical performance (tensile strength > 60 MPa, Young's modulus > 4 GPa) and excellent electrical insulation (breakdown strength > 358 kV/mm), making them candidates for low energy consumption insulation materials. The bulky trifluoromethyl groups limit intermolecular aggregation, which gives the resulting polymers a low refractive index and high transparency.

In energy storage, 6FAPB-derived polyimides can act as interlayers in current collectors for high energy lithium-ion batteries. Such current collectors are reported to raise specific energy by 16–26% and to self-extinguish fires during short circuits. The compound is also listed for use in COF research.

• Monomer for synthesising thermally stable, high-strength polyimides.
• Preparation of polyimide insulation materials with low energy consumption.
• Development of transparent, low refractive index fluorinated polyimide films.
• Polyimide interlayers for fire-extinguishing current collectors in high energy lithium-ion batteries.
• Building block for covalent organic framework (COF) research.

• Product code: B2071
• Full Name: 1,4-Bis(4-amino-2-trifluoromethylphenoxy)benzene
• M​olecular Weight: 428.33 g/mol
• Synonyms: 4,4'-(1,4-Phenylenebis(oxy))bis(3-(trifluoromethyl)aniline)
• Classification / Family: Diamine building block, Fluorinated building block, Polyimides, Batteries, High performance polymers
• Melting Point: 132 °C – 136 °C

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