Invention Grant
- Patent Title: Producing short chain perfluoroalkyl iodides
- Patent Title (中): 生产短链全氟烷基碘化物
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Application No.: US12796020Application Date: 2010-06-08
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Publication No.: US08258354B2Publication Date: 2012-09-04
- Inventor: Stephen Ernest Jacobson , Sourav Kumar Sengupta , John Joseph Hagedorn , Liza Lopez
- Applicant: Stephen Ernest Jacobson , Sourav Kumar Sengupta , John Joseph Hagedorn , Liza Lopez
- Applicant Address: US DE Wilmington
- Assignee: E. I. du Pont de Nemours and Company
- Current Assignee: E. I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C07C17/361
- IPC: C07C17/361 ; C07C17/26 ; C07C19/08
Abstract:
An improved process for producing perfluoroalkyl iodides of formula (I) F(CF2CF2)n—I (I) wherein n is an integer from 2 to 3, wherein the improvement comprises contacting at least one perfluoroalkyl iodide of formula (II) and at least one perfluoroalkyl iodide of formula (III) F(CF2CF2)m—I (II) F(CF2CF2)p—I (III) wherein m is an integer greater than or equal to 3, and p is an integer equal to or lower than 2, at a) a molar ratio of formula (III) to formula (II) of from about 1:1 to about 6:1, b) a residence time of from about 1 to about 9 seconds, and c) a temperature of from about 450° C. to about 495° C.
Public/Granted literature
- US20110301390A1 PRODUCING SHORT CHAIN PERFLUOROALKYL IODIDES Public/Granted day:2011-12-08
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