# US 11,028,028 B2 · Process for preparing 3,3,3-trifluoroprop-1-ene

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- Number: US 11,028,028 B2
- Document ID: US11028028B2
- Status: Granted
- Kind: B2
- Application number: 16/749,857
- Filed: 2020-01-22
- Published: 2020-05-21
- Granted: 2021-06-08
- Earliest claimed: 2017-03-10
- Assignees: The Chemours Company Fc, LLC
- Applicants: The Chemours Company FC, LLC
- Inventors: Xuehui Sun; Karl Robert Krause
- Web page: https://patentgrep.com/patent/US11028028B2

## CPC

- C07C 17/25: by splitting-off hydrogen halides from halogenated hydrocarbons
- C07C 21/18: containing fluorine
- B01J 27/10: Chlorides
- C07C 17/04: to unsaturated halogenated hydrocarbons
- C07C 17/07: by addition of hydrogen halides
- C07C 19/10: and chlorine
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

The present application provides a process of preparing 3,3,3-trifluoroprop-1-ene, comprising reacting 3-chloro-1,1,1-trifluoropropane with a base in an aqueous solvent component in the absence of a phase transfer catalyst.

## Claims

### Claim 1

A composition comprising:
i) 3-chloro-1,1,1-trifluoropropane (253fb); and
ii) 1,1,1,3-tetrafluoropropane (254fb).

### Claim 2 (depends on 1)

The composition of claim 1, wherein the composition comprises 3-chloro-1,1,1-trifluoropropane (253fb), 1,1,1,3-tetrafluoropropane (254fb), 3,3,3-trifluoroprop-1-ene (1243zf), and 2-chloro-3,3,3-trifluoropropene (1233xf).

### Claim 3

A composition comprising:
about 95 to about 99 percent 3,3,3-trifluoroprop-1-ene (1243zf);
about 1 to about 2 percent 3-chloro-1,1,1-trifluoropropane (253fb); and
about 0.1 to about 0.2 percent 2-chloro-3,3,3-trifluoropropene (1233xf).

### Claim 4

A composition comprising:
about 98 to about 99 percent 3,3,3-trifluoroprop-1-ene (1243zf);
about 1 to about 2 percent 3-chloro-1,1,1-trifluoropropane (253fb); and
about 0.1 to about 0.2 percent 2-chloro-3,3,3-trifluoropropene (1233xf).

### Claim 5

A composition comprising:
about 70 to about 80 percent 3,3,3-trifluoroprop-1-ene (1243zf);
about 20 to about 25 percent 3-chloro-1,1,1-trifluoropropane (253fb);
about 0.05 to about 0.1 percent 2-chloro-3,3,3-trifluoropropene (1233xf); and
about 0.01 to about 0.05 percent 1,1,1,3-tetrafluoropropane (254fb).

### Claim 6

A composition comprising:
about 74 to about 76 percent 3,3,3-trifluoroprop-1-ene (1243zf);
about 23 to about 25 percent 3-chloro-1,1,1-trifluoropropane (253fb);
about 0.05 to about 0.07 percent 2-chloro-3,3,3-trifluoropropene (1233xf); and
about 0.01 to 0.02 percent 1,1,1,3-tetrafluoropropane (254fb).

### Claim 7 (depends on 1)

The composition of claim 1 further comprising 3,3,3-trifluoroprop-1-ene (1243zf), 1,1,1-trifluoro-2,3-dichloropropane (243db), and 2-chloro-3,3,3-trifluoropropene (1233xf).

### Claim 8 (depends on 1)

The composition of claim 1 further comprising HF.

### Claim 9 (depends on 8)

The composition of claim 8 further comprising 3,3,3-trifluoroprop-1-ene (1243zf).

### Claim 10 (depends on 8)

The composition of claim 8 further comprising 2-chloro-3,3,3-trifluoropropene (1233xf).

### Claim 11 (depends on 8)

The composition of claim 8 further comprising 1,1,1-trifluoro-2,3-dichloropropane (243db).