1,4-bis(bromodifluoromethyl) tetrafluorobenzene and...

Details 1,4-bis(bromodifluoromethyl) tetrafluorobenzene and... 1,4-bis(bromodifluoromethyl) tetrafluorobenzene and...

2011-01-11

2011-01-11

Parsa, Jafar (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S170000

Reexamination Certificate

active

07868213

ABSTRACT:
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(bromodifluoromethyl)tetrafluorobenzene (DFMTFB), a bromination agent, and a solvent (with or without) to form a mixture; (b) heating the mixture under UV radiation; and (c) purifying the resultant to obtain 1,4-bis(bromodifluoromethyl)tetrafluorobenzene (BFTFB) with high purity.

REFERENCES:
patent: 7652178 (2010-01-01), Dolbier et al.
patent: 2005183729 (2005-07-01), None

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