Organosilane, ionic organosilane, membrane composition, and membrane
A dihaloorganosilane is represented by the formula (I): Each X independently represents Cl, Br, or I. Each Ar 1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl. Each R 1 independently represents an alkylene group having from 2 to 18 carbon atoms. Each R 2 independently represents methyl or ethyl. Each R 3 independently represents an alkylene group having from 1 to 18 carbon atoms. Each R 4 independently represents an alkylene group having from 2 to 18 carbon atoms, and n is an integer in a range of 0 to 5, inclusive. Ionic organosilanes preparable from the dihaloorganosilanes are represented by the formula (II): Membrane compositions and membranes containing the ionic organosilanes are also disclosed.
1. A dihaloorganosilane represented by the formula:
wherein:
each X independently represents Cl, Br, or I;
each Ar 1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl;
each R 1 independently represents an alkylene group having from 2 to 18 carbon atoms;
each R 2 independently represents methyl or ethyl;
each R 3 independently represents an alkylene group having from 1 to 18 carbon atoms;
each R 4 independently represents an alkylene group having from 2 to 18 carbon atoms; and
n is an integer in a range of 0 to 5, inclusive.
2. The dihaloorganosilane of claim 1 , wherein each R 1 independently represents an alkylene group having 2 or 3 carbon atoms.
3. The dihaloorganosilane of claim 1 , wherein each R 3 independently represents an alkylene group having from 2 to 4 carbon atoms.
4. The dihaloorganosilane of claim 1 , wherein each R 4 independently represents an alkylene group having from 6 to 10 carbon atoms.
5. The dihaloorganosilane of claim 1 , wherein n=0.
6. The dihaloorganosilane of claim 1 , wherein n=1.
7. An ionic organosilane represented by the formula:
wherein:
each X independently represents Cl, Br, or I;
each Ar 1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl;
each R 1 independently represents an alkylene group having from 2 to 18 carbon atoms;
each R 2 independently represents methyl or ethyl;
each R 3 independently represents an alkylene group having from 1 to 18 carbon atoms;
each R 4 independently represents an alkylene group having from 2 to 18 carbon atoms;
each R 5 independently represents H or methyl;
each R 6 independently represents alkyl having from 1 to 4 carbon atoms, or allyl; and
n is an integer in a range of 0 to 5, inclusive.
8. The ionic organosilane of claim 7 , wherein each R 1 independently represents an alkylene group having 2 or 3 carbon atoms.
9. The ionic organosilane of claim 7 , wherein each R 3 independently represents an alkylene group having from 2 to 4 carbon atoms.
10. The ionic organosilane of claim 7 , wherein each R 4 independently represents an alkylene group having from 6 to 10 carbon atoms.
11. The ionic organosilane of claim 7 , wherein n=0.
12. The ionic organosilane of claim 7 , wherein n=1.
13. A membrane composition comprising components:
(a) a copolymer comprising the divalent monomer units:
wherein:
R 5 represents H or methyl;
R 6 represents alkyl having from 1 to 4 carbon atoms, or allyl; and
X represents Cl, Br, or I, and
wherein monomer unit (i) and monomer unit (ii) are present in a respective mole ratio of 1.5:1 to 3:1; and
(b) an ionic organosilane compound represented by the formula:
wherein:
each Ar 1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl;
each R 1 independently represents an alkylene group having from 2 to 18 carbon atoms;
each R 2 independently represents methyl or ethyl;
each R 3 independently represents an alkylene group having from 1 to 18 carbon atoms;
each R 4 independently represents an alkylene group having from 2 to 18 carbon atoms; and
n is an integer in a range of 0 to 5, inclusive; and
wherein component (a) and component (b) are present in a respective weight ratio in a range of 99.5:0.5 to 98:2.
14. The membrane composition of claim 13 , wherein each R 1 independently represents an alkylene group having 2 or 3 carbon atoms.
15. The membrane composition of claim 13 , wherein each R 3 independently represents an alkylene group having from 2 to 4 carbon atoms.
16. The membrane composition of claim 13 , wherein each R 4 independently represents an alkylene group having from 6 to 10 carbon atoms.
17. The membrane composition of claim 13 , wherein n=0.
18. The membrane composition of claim 13 , wherein n=1.
19. The membrane composition of claim 13 , wherein R 6 represents alkyl having from 1 to 4 carbon atoms.
20. The membrane composition of claim 13 , wherein R 6 represents allyl.
21. A membrane comprising the membrane composition of claim 13 .