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1. WO2004094049 - MEMBRANE HYDROPHILE ET PROCEDE DE FABRICATION DE LADITE MEMBRANE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A process for making a hydrophilic membrane, comprising the steps of:

(a) providing a polymeric membrane;

(b) providing an acrylate monomer including hydrophilic units;

(c) providing a diacrylate monomer including hydrophilic units;

(d) providing an initiator for facilitating polymerization and

crosslinking reactions of the acrylate and diacrylate monomers; and

(e) exposing the polymeric membrane to the acrylate and diacrylate monomers in the presence of the initiator to actuate polymerization and crosslinking of the acrylate and diacrylate monomers.

2. The process according to Claim 1, further comprising the step of exposing the polymeric membrane to a heat source.

3. The process according Claim 1, wherein the step of providing a polymeric membrane further comprises providing a membrane substantially fabricated of a hydrophobic material.

4. The process according Claim 1, wherein the step of providing a polymeric membrane further comprises providing a membrane substantially fabricated of PVDF.

5. The process according Claim 1, wherein the step of providing a polymeric membrane further comprises providing a membrane substantially fabricated of nylon.

6. The process according Claim 1, wherein the step of providing a polymeric membrane further comprises providing a membrane substantially fabricated of PES.

7. The process according to Claim 1, further comprising the step of exposing the polymeric membrane to an alkali.

8. The process according to Claim 1, further comprising the step of exposing the polymeric membrane to solutes containing hydroxyl groups.

9. The process according to Claim 1, wherein the step of providing a diacrylate monomer including hydrophilic units further comprises providing TEGDA.

10. The process according to Claim 1, wherein the step of providing a diacrylate monomer including hydrophilic units further comprises providing PEG(200) dimethacrylate.

11. The process according to Claim 1, wherein the step of providing a diacrylate monomer including hydrophilic units further comprises providing PEG(400) dimethacrylate.

12. The process according to Claim 1, wherein the step of providing a diacrylate monomer including hydrophilic units further comprises providing PEG(600) dimethacrylate.

13. The process according to Claim 1, wherein the step of providing an acrylate monomer including hydrophilic units further comprises providing an acrylate monomer having a chain of repeating hydrophilic segments.

14. The process according to Claim 13, wherein the step of providing an acrylate monomer including a chain of repeating hydrophilic segments further comprises providing an acrylate monomer including a chain of ethylene oxide segments.

15. The process according to Claim 1, wherein the step of providing an acrylate monomer including hydrophilic units further comprises providing an acrylate monomer including a chain of ethylene oxide segments and a hydrophilic functional group.

16. The process according to Claim 15, wherein the step of providing an acrylate monomer including a chain of ethylene oxide segments and a hydrophilic functional group further comprises providing an acrylate monomer including a chain of ethylene oxide segments and a hydroxyl functional group.

17. The process according to Claim 1, wherein the step of providing an acrylate monomer including hydrophilic units further comprises providing nEGMA, where n is a variable number of greater magnitude than one.

18. The process according to Claim 17, wherein the step of providing nEGMA further comprises providing nEGMA, where n is equal to 2.

19. The process according to Claim 17, wherein the step of providing nEGMA further comprises providing nEGMA, where n is equal to 5.

20. The process according to Claim 17, wherein the step of providing nEGMA further comprises providing nEGMA, where n is equal to 10.

21. The process according to Claim 1, wherein the step of providing an initiator for facilitating polymerization and crosslinking reactions of the acrylate and diacrylate monomers further comprises providing sodium persulfate.

22. The process according to Claim 1, wherein the step of providing an initiator for facilitating polymerization and crosslinking reactions of the acrylate and diacrylate monomers further comprises providing ammonium persulfate.

23. A solution for imparting hydrophilic characteristics to a polymeric membrane, comprising:

(a) a monofunctional acrylate monomer containing

substantially hydrophilic segments and a hydrophilic functional group;

(b) a difunctional diacrylate monomer containing hydrophilic functional groups; and

(c) an initiator for facilitating polymerization and crosslinking of the monofunctional acrylate and difunctional diacrylate monomers.

24. A solution as recited in Claim 23, wherein the hydrophilic segments are ethylene oxide.

25. A solution as recited in Claim 23, wherein the functional group of the monofunctional acrylate monomer is a hydroxyl group.

26. A solution as recited in Claim 23, further comprising an alkali.

27. A solution as recited in Claim 23, further comprising an alcohol.

28. A solution as recited in Claim 23, wherein the monofunctional acrylate monomer is nEGMA, where n is a variable number of greater magnitude than one.

29. A solution as recited in Claim 23, wherein the difunctional diacrylate monomer is TEGDA.

30. A solution as recited in Claim 23, wherein the difunctional diacrylate monomer is PEG(200) dimethacrylate.

31. A solution as recited in Claim 23, wherein the difunctional diacrylate monomer is PEG(400) dimethacrylate.

32. A solution as recited in Claim 23, wherein the difunctional diacrylate monomer is PEG(600) dimethacrylate.

33. A solution as recited in Claim 23, wherein the initiator is sodium persulfate.

34. A solution as recited in Claim 23, wherein the initiator is ammonium persulfate.

35. A hydrophilic polymeric membrane comprising a microporous substrate and a crosslinked coating including a monofunctional acrylate monomer having ethylene oxide segments and a hydrophilic functional group and a difunctional diacrylate monomer having hydrophilic functional groups.

36. A hydrophilic polymeric membrane as recited in Claim 35, wherein the hydrophilic functional group included with the monofunctional acrylate monomer is a hydroxyl group.

37. A hydrophilic polymeric membrane as recited in Claim 35, wherein the microporous substrate is substantially fabricated of PVDF.

38. A hydrophilic polymeric membrane as recited in Claim 35, wherein the microporous substrate is substantially fabricated of PES.

39. A hydrophilic polymeric membrane as recited in Claim 35, wherein the microporous substrate is substantially fabricated of nylon.

40. A hydrophilic polymeric membrane as recited in Claim 35, wherein the monofunctional acrylate monomer is nEGMA, where n is a variable of greater magnitude than one.

41. A hydrophilic polymeric membrane as recited in Claim 40, wherein n is equal to 10.

42. A hydrophilic polymeric membrane as recited in Claim 35, wherein the difunctional diacrylate monomer is TEGDA.

43. A hydrophilic polymeric membrane as recited in Claim 35, wherein the difunctional diacrylate monomer is PEG(200) dimethacrylate.

44. A hydrophilic polymeric membrane as recited in Claim 35, wherein the difunctional diacrylate monomer is PEG(400) dimethacrylate.

45. A hydrophilic polymeric membrane as recited in Claim 35, wherein the difunctional diacrylate monomer is PEG(600) dimethacrylate.