公开(公告)号：US20160122266A1

公开(公告)日：2016-05-05

申请号：US14922237

申请日：2015-10-26

Applicant: THE CHEMOURS COMPANY FC LLC

Inventor： STEPHEN JAMES GETTY ,  GEORGE MURRAY VOLKER ,  PELIN HACARLIOGLU

IPC: C07C17/361

CPC classification number: C07C17/361 ,  C07C19/16

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 thermolyzing at least one perfluoroalkyl iodide of formula (II), optionally in the presence of perfluoroethyl iodide, formula (III) F(CF2CF2)m—I  (II) F(CF2CF2)p—I  (III) wherein m is an integer greater than or equal to 4, and p is 1, wherein a) the molar ratio of formula (III) to formula (II) is less than 1.0, b) the residence time is from about 0.1 to about 10 seconds, and c) the temperature is from about 450° C. to about 500° C.

Abstract translation: 一种改进的式（I）F（CF 2 CF 2）n -I（I）的全氟烷基碘化物的方法，其中n是2至3的整数，其中改进包括将至少一种式（II）的全氟烷基碘热解，任选地 式（III）F（CF 2 CF 2）m -I（II）F（CF 2 CF 2）p -I（III）的全氟乙基碘的存在，其中m是大于或等于4的整数，p是1，其中a） 式（III）与式（II）的摩尔比小于1.0，b）停留时间为约0.1至约10秒，和c）温度为约450℃至约500℃。

公开(公告)号：US20250002804A1

公开(公告)日：2025-01-02

申请号：US18703862

申请日：2022-10-24

Applicant: THE CHEMOURS COMPANY FC, LLC

Inventor： ALEXANDER BORISOVICH SHTAROV ,  PELIN HACARLIOGLU ,  JON LEE HOWELL

IPC: C10M169/02 ,  C10M107/38 ,  C10M119/22 ,  C10M177/00 ,  C10N20/02 ,  C10N20/04 ,  C10N20/06 ,  C10N30/02 ,  C10N50/10 ,  C10N70/00

Abstract: A grease includes a perfluoropolyether oil copolymer and a thickener mixed with the copolymer. The copolymer includes about 20 mol % to about 80 mol % of —CF2CF2O— units, about 20 mol % to about 80 mol % of —CF(CF3)CF2O— units, and about 0 mol % to about 45 mol % of one or more additional perfluoroalkyleneoxy units. The copolymer has a viscosity index in the range of about 120 to about 220. The copolymer has an average TFEO run length of less than about 6. A process of forming a grease includes mixing a perfluoropolyether oil copolymer with a thickener to form the grease.

公开(公告)号：US20230174713A1

公开(公告)日：2023-06-08

申请号：US17921844

申请日：2021-04-29

Applicant: THE CHEMOURS COMPANY FC, LLC

Inventor： ALEXANDER BORISOVICH SHTAROV ,  JON LEE HOWELL ,  PELIN HACARLIOGLU

IPC: C08G65/00 ,  C08G65/323 ,  C08G65/26 ,  C08G65/22 ,  C10M107/38

CPC classification number: C08G65/007 ,  C08G65/3236 ,  C08G65/2696 ,  C08G65/226 ,  C10M107/38 ,  C10M2213/04

Abstract: A copolymer includes 20 mol % to 80 mol % of —CF2CF2O— units, 20 mol % to 80 mol % of —CF(CF3)CF2O— units, and 0 mol % to 45 mol % of one or more additional perfluoroalkyleneoxy units. The copolymer has a molecular weight Mn of 1,500 to 20,000, a viscosity index of 100 to 220, and an average tetrafluoroethylene oxide (TFEO) run length less than 6. A process of forming a perfluoroalkyl polyether copolymer includes feeding a gas stream containing TFEO and hexafluoropropylene oxide (HFPO) into a reactor containing a fluorinated solvent, a fluoride salt, an ether, and an acid fluoride to form an acid fluoride-containing polymer. The process also includes hydrolyzing the acid fluoride-containing polymer to form a perfluoroalkyl polyether carboxylic acid or carboxylate salt. The process further includes distilling off the fluorinated solvent and treating the perfluoroalkyl polyether carboxylic acid or carboxylate salt with elemental fluorine to obtain the perfluoroalkyl polyether copolymer.