1234YF- and 1234ZE-based polymeric membrane materials, membrane preparations and uses thereof

• US 9,782,730 B2
• Filed: 04/29/2014
• Issued: 10/10/2017
• Est. Priority Date: 05/14/2013
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Lu, Changqing, Poss, Andrew J., Singh, Rajiv R.
• Primary Examiner(s): Menon, Krishnan S
• Assistant Examiner(s): ALI, WAQAAS A
• Application Number:
  US14/264,093
• Publication Number:
  US 20140339167A1
• Time in Patent Office: 1,260 Days
• Field of Search: 210651, 21050021
• CPC Class Codes: B01D 2325/24 Mechanical properties, e.g. strength
• CPC Class Codes: B01D 2325/28 Degradation or stability over time
• CPC Class Codes: B01D 2325/30 Chemical resistance
• CPC Class Codes: B01D 67/0011 Casting solutions therefor
• CPC Class Codes: B01D 69/087 Details relating to the spinning process
• CPC Class Codes: B01D 71/32 containing fluorine atoms

Abstract

The present invention generally relates to polymeric membrane materials formed, at least in part, from monomeric material selected from 2,3,3,3-tetrafluoropropene (CF₃CF═CH₂, HFO-1234yf) or trans-1,3,3,3-tetrafluoropropene (CF₃CH═CFH, HFO-1234ze), and to membrane preparations and uses thereof in water desalination, filtration, membrane distillation, pervaporation, and selective gas separation.

Claims

1. A membrane consisting of a copolymer having units based on vinylidene fluoride (“

VDF”

) monomer and more than 30 wt % of units based on trans-1,3,3,3-tetrafluoropropene monomer.

2. The membrane of claim 1 wherein said copolymer has more than 50 wt % of units based on trans-1,3,3,3-tetrafluoropropene monomer.

3. The membrane according to claim 1, wherein the membrane is asymmetric integrally skinned.

4. The membrane according to claim 1, wherein the membrane is a thin film composite membrane.

5. The membrane according to claim 1, wherein the membrane has a flat sheet configuration.

6. The membrane according to claim 1, wherein the membrane has a hollow fiber configuration.

7. The membrane according to claim 1, wherein the membrane is a reverse osmosis membrane.

8. The membrane according to claim 1, wherein the membrane is selected from the group consisting of microfiltration membranes, ultrafiltration membranes, and nanofiltration membranes.

9. The membrane according to claim 1, wherein the membrane is a pervaporation membrane.

10. The membrane according to claim 1, wherein the membrane is a distillation membrane.

11. The membrane according to claim 1, wherein the membrane is porous.