Absorbent compositions including amino-siloxanes
An absorbent composition includes an amino-siloxane having structure (I): wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; R 4 is independently at each occurrence a C 1 -C 18 aliphatic or aromatic radical or R 5 , wherein R 5 comprises structure (II): wherein X is independently at each occurrence an oxygen atom or a sulfur atom; w is between 0 and 5; y is between 0 and 10; and z is between 0 and 10; wherein, when R 4 is R 5 comprising the structure (II), a sum of w, y, and z is greater than or equal to 0, and, when R 4 is not R 5 , a sum of w, y, and z is greater than or equal to 1.
1. An absorbent composition comprising an amino-siloxane having structure (I):
wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; R 4 is independently at each occurrence a C 1 -C 18 aliphatic or aromatic radical or R 5 , wherein R 5 comprises structure (II):
wherein X is independently at each occurrence an oxygen atom or a sulfur atom; w is between 0 and 5; y is between 0 and 10; and z is between 0 and 10; wherein, when R 4 is R 5 comprising the structure (II), a sum of w, y, and z is greater than or equal to 0, and, when R 4 is not R 5 , a sum of w, y, and z is greater than or equal to 1; and
wherein the amino-siloxane comprises structure (Ib):
wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; R 4 is independently at each occurrence a C 1 -C 18 aliphatic or aromatic radical or R 5 , wherein R 5 comprises structure (II):
and X is independently at each occurrence an oxygen atom or a sulfur atom.
2. The absorbent composition of claim 1 , wherein the absorbent composition is substantially free of a carrier fluid with the amino-siloxane.
3. The absorbent composition of claim 1 , wherein the amino-siloxane is configured to form a reaction product with carbon dioxide, the reaction product being substantially liquid at temperatures between about 20 degrees Celsius and about 50 degrees Celsius.
4. An absorbent composition comprising an amino-siloxane having structure (I):
wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; R 4 is independently at each occurrence a C 1 -C 18 aliphatic or aromatic radical or R 5 , wherein R 5 comprises structure (II):
wherein X is independently at each occurrence an oxygen atom or a sulfur atom; w is between 0 and 5; y is between 0 and 10; and z is between 0 and 10; wherein, when R 4 is R 5 comprising the structure (II), a sum of w, y, and z is greater than or equal to 0, and, when R 4 is not R 5 , a sum of w, y, and z is greater than or equal to 1; and
wherein the amino-siloxane comprises structure (Ic):
wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; and X is independently at each occurrence an oxygen atom or a sulfur atom.
5. An absorbent composition comprising an amino-siloxane having structure (I):
wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; R 4 is independently at each occurrence a C 1 -C 18 aliphatic or aromatic radical or R 5 , wherein R 5 comprises structure (II):
wherein X is independently at each occurrence an oxygen atom or a sulfur atom; w is between 0 and 5; y is between 0 and 10; and z is between 0 and 10; wherein, when R 4 is R 5 comprising the structure (II), a sum of w, y, and z is greater than or equal to 0, and, when R 4 is not R 5 , a sum of w, y, and z is greater than or equal to 1; and
wherein the amino-siloxane comprises structure (Id):
wherein R 1 is independently at each occurrence a C 1 -C 6 aliphatic or aromatic radical; R 2 is independently at each occurrence a C 2 -C 10 aliphatic or aromatic radical; R 3 is independently at each occurrence a hydrogen atom or a C 1 -C 6 aliphatic or aromatic radical; and X is independently at each occurrence an oxygen atom or a sulfur atom.
6. The absorbent composition of claim 4 , wherein the absorbent composition is substantially free of a carrier fluid with the amino-siloxane.
7. The absorbent composition of claim 5 , wherein the absorbent composition is substantially free of a carrier fluid with the amino-siloxane.
8. The absorbent composition of claim 4 , wherein the amino-siloxane is configured to form a reaction product with carbon dioxide, the reaction product being substantially liquid at temperatures between about 20 degrees Celsius and about 50 degrees Celsius.
9. The absorbent composition of claim 5 , wherein the amino-siloxane is configured to form a reaction product with carbon dioxide, the reaction product being substantially liquid at temperatures between about 20 degrees Celsius and about 50 degrees Celsius.