Azeotropic or quasi-azeotropic composition of chloromethane

• US 9,969,918 B2
• Filed: 04/07/2017
• Issued: 05/15/2018
• Est. Priority Date: 12/26/2012
• Status: Active Grant

• Current Assignee: Arkema France (Arkema)
• Original Assignee: Arkema France (Arkema)
• Inventors: Deur-Bert, Dominique, Wendlinger, Laurent
• Primary Examiner(s): McGinty, Douglas J
• Application Number:
  US15/481,873
• Publication Number:
  US 20170210960A1
• Time in Patent Office: 403 Days
• Field of Search: 252 67, 510177, 510408, 510415
• CPC Class Codes: C09K 2205/122 Halogenated hydrocarbons
• CPC Class Codes: C09K 2205/126 Unsaturated fluorinated hydrocarbons
• CPC Class Codes: C09K 2205/32 The mixture being azeotropic
• CPC Class Codes: C09K 23/007 Organic compounds containing halogen
• CPC Class Codes: C09K 23/017 Mixtures of compounds
• CPC Class Codes: C09K 3/00 Materials not provided for elsewhere
• CPC Class Codes: C09K 3/30 for aerosols aerosol containers B65D83/14
• CPC Class Codes: C09K 5/04 the change of state being from liquid to vapour or vice versa
• CPC Class Codes: C09K 5/044 comprising halogenated compounds
• CPC Class Codes: C09K 5/045 containing only fluorine as halogen
• CPC Class Codes: H01B 3/56 gases

Abstract

Quasi-azeotropic or azeotropic compositions containing chloromethane and at least one or more compound(s) selected from 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 1,1,1,2-tetrafluoroethane, 1,1,1,2,2-pentafluoropropane, E/Z-1,1,3,3,3-pentafluoropropene, E/Z-1,2,3,3,3-pentafluoropropene, 1,1-difluoroethane and E-1,3,3,3-tetrafluoropropene. The composition may include either from 0.5 to 70 mol % of chloromethane and at least from 99.5 to 30 mol % of a compound selected from 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane, 3,3,3-trifluoropropene and 1,1,1,2-tetrafluoroethane, or from 55 to 95 mol % of chloromethane and at least from 45 to 5 mol % of one or more compound(s) selected from 1,1,1,2,2-pentafluoropropane, E/Z-1,1,3,3,3-pentafluoropropene, E/Z-1,2,3,3,3-pentafluoropropene and E-1,3,3,3-tetrafluoropropene.

Claims

1. An azeotropic or quasi-azeotropic composition comprising:

5 to 20 mol % of chloromethane,

20 to 45 mol % of HF, and

35 to 70 mol % of 2,3,3,3-tetrafluoropropene.

2. An azeotropic or quasi-azeotropic composition comprising:

35 to 60 mol % of chloromethane,

15 to 45 mol % of HF, and

15 to 30 mol % of 1,1,1,2,2-pentafluoropropane.

3. An azeotropic or quasi-azeotropic composition comprising:

1 to 30 mol % of chloromethane,

15 to 45 mol % of HF, and

30 to 85 mol % of 1,1-difluoroethane.

4. An azeotropic or quasi-azeotropic composition comprising:

40 to 70 mol % of chloromethane,

15 to 40 mol % of HF, and

10 to 30 mol % of E-1,3,3,3-tetrafluoropropene.