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US 2009/0156834 A1Published application
Process for making 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane
AssigneeHoneywell International Inc.
InventorsAndreas Kanschik-Conradsen, Bjoern Oliver Jackisch, Ralph Lonsky
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Abstract
There is provided a continuous process for making 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane. The process has the following steps: a) continuously feeding 2,2-bis(3,4-dimethylphenyl)hexafluoropropane and aqueous nitric acid into a reactor cell and b) heating the mixture to a temperature sufficient to effect reaction between the 2,2-bis(3,4-dimethylphenyl)hexafluoropropane and the nitric acid.
Claims17
A continuous process for making 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane, comprising:
- a) continuously feeding the reaction components into a reaction cell and
- b) heating the mixture to a temperature sufficient to effect reaction between the 2,2-bis(3,4-dimethylphenyl)hexafluoropropane and the nitric acid.
Dependencies are inferred from the claim text.