Polyarylether membranes
View Patent ↗A membrane including a polyarylether having amide functionality. The polyarylether having amide functionality includes units from at least one of structure I or structure II: R 1 and R 2 are separate groups or are covalently connected to form a cyclic moiety; R 1 and R 2 are each, independently, hydrogen, C 1-20 alkyl, C 3 -C 30 aryl or a substituted C 3-30 aryl; R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each, independently, a nitro group, C 1 -C 12 alkyl, C 3 -C 30 aryl or a combination; Y is hydrogen, C 1-20 alkyl or C 3 -C 30 aryl; k is from about 0 to about 10; a, b, c, d, e and f are each, independently, 0, 1, 2, 3 or 4; and m and n are each, independently, 0 or 1.
1. A membrane comprising a polyarylether having amide functionality having units from at least one of structure I or structure II:
wherein R 1 and R 2 are separate groups or are covalently connected to form a cyclic moiety, R 1 and R 2 are each, independently, selected from the group consisting of hydrogen, C 1 -C 20 alkyl, C 3 -C 30 aryl and a substituted C 3 -C 30 aryl;
R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each, independently, a nitro group, C 1 -C 12 alkyl, C 3 -C 30 aryl or a combination thereof;
k is from about 0 to about 10;
Y is hydrogen, C 1 -C 20 alkyl or C 3 -C 30 aryl;
a, b, c, d, e and f are each, independently, 0, 1, 2, 3 or 4; and
m and n are each, independently, 0 or 1.
2. The membrane of claim 1 wherein the polyarylether having amide functionality has the units of structure III:
wherein R 1 and R 2 are separate groups or are covalently connected to form a cyclic moiety, R 1 and R 2 are each, independently, selected from the group consisting of hydrogen, C 1 -C 20 alkyl, C 3 -C 30 aryl and a substituted C 3 -C 30 aryl; and
k is from about 0 to about 10.
3. The membrane of claim 1 having a glass transition temperature from about 120° C. to about 280° C.
4. The membrane of claim 1 wherein the polyarylether having amide functionality is a homopolymer.
5. The membrane of claim 1 wherein the polyarylether having amide functionality is a copolymer.
6. The membrane of claim 5 wherein the polyarylether having amide functionality further comprises units from an aromatic ether.
7. The membrane of claim 6 , wherein the aromatic ether comprises units from formula IX or X:
wherein R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each, independently, a nitro group, C 1 -C 12 alkyl, C 3 -C 30 aryl or a combination thereof;
Y and R′ are each, independently, hydrogen, C 1 -C 20 alkyl or C 3 -C 30 aryl;
a, b, c, d, e and f are each, independently, 0, 1, 2, 3 or 4; and
m and n are each, independently, 0 or 1.
8. The membrane of claim 1 wherein the polyarylether having amide functionality is a block copolymer.
9. The membrane of claim 8 wherein the block copolymer further comprises (B) units from a polymer.
10. The membrane of claim 9 wherein the polyarylether having amide functionality comprises (A) units of structure III:
wherein R 1 and R 2 are separate groups or are covalently connected to form a cyclic moiety, R 1 and R 2 are each, independently, selected from the group consisting of hydrogen, C 1 -C 20 alkyl, C 3 -C 30 aryl and a substituted C 3 -C 30 aryl; and
k is from about 0 to about 10.
11. The polyarylether of claim 8 having a glass transition temperature from about 120° C. to about 280° C.
12. The polyarylether of claim 8 wherein the polymer comprises units from formula IX or X:
wherein R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each, independently, a nitro group, C 1 -C 12 alkyl, C 3 -C 30 aryl or a combination thereof;
Y and R′ are each, independently, hydrogen, C 1 -C 20 alkyl or C 3 -C 30 aryl;
a, b, c, d, e and f are each, independently, 0, 1, 2, 3 or 4; and
m and n are each, independently, 0 or 1.
13. The membrane of claim 8 wherein the block copolymer comprises (A) from about 1 percent by weight to about 99 percent by weight of polyarylether units having amide functionality and (B) from about 1 percent by weight to about 99 percent by weight of the polymer, based on the weight of the block copolymer.
14. The membrane of claim 1 further comprising a resin.
15. The membrane of claim 14 wherein the polyarylether having amide functionality has the units of structure III:
wherein R 1 and R 2 are separate groups or are covalently connected to form a cyclic moiety, R 1 and R 2 are each, independently, selected from the group consisting of hydrogen, C 1 -C 20 alkyl, C 3 -C 30 aryl and a substituted C 3-30 aryl; and
k is from about 0 to about 10.
16. The membrane of claim 14 wherein the polyarylether having amide functionality is a homopolymer.
17. The membrane of claim 14 wherein the polyarylether having amide functionality is a copolymer.
18. The membrane of claim 1 wherein the membrane is a hemodialysis membrane.
19. The membrane of claim 1 wherein the membrane is a water purification membrane.