US2022119423A1PendingUtilityA1
Method of producing a methylsilicic acid hydrogel with properties of supramolecular structures, and a hydrogel produced using this method
Est. expiryAug 30, 2037(~11.1 yrs left)· nominal 20-yr term from priority
C01B 33/155C08G 77/08C07F 7/188C08G 77/06C08G 77/16C08G 77/04C08G 77/02C08G 2210/00
45
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Claims
Abstract
A methylsilicic acid hydrogel is produced by reacting a solution of sodium methyl siliconate with a gaseous acid agent. The resulting product is vacuumised to remove residual gas, and washed with water. A significant OH-group content in the hydrogel, which results from bubbling the gaseous acid agent through the solution of sodium methyl siliconate, makes it possible to increase the selectivity of the adsorption properties when the hydrogel is used in medicine and veterinary science.
Claims
exact text as granted — not AI-modified1 . A method of producing a methylsilicic acid hydrogel, the method comprising:
providing a solution of sodium methyl siliconate in a reactor, passing a gaseous acid agent through the solution of sodium methyl siliconate in the reactor, discharging the product from the reactor, vacuumizing the product to remove residual gas, and washing the product with water having a pH of from 6.5 to 7.0, thereby providing the methylsilicic acid hydrogel, wherein the methylsilicic acid hydrogel has the formula:
[{CH 3 Si(OH) 2 O 0.5 } a/n {CH 3 Si(OH)O} b/n {CH 3 SiO 1.5 } c/n }.x H 2 O, where
11
≤
x
≤
35
;
0
≤
a
n
≤
0.38;
0.16
_
≤
b
n
≤
0.90;
0.11
_
≤
c
n
≤
0.60.
2 . The method according to claim 1 , wherein the bubbling time is 45 minutes and the bubbling rate is 333 ml of the gaseous agent per minute.
3 - 8 . (canceled)
9 . The method according to claim 1 , wherein the sodium methyl siliconate is added dropwise and through a comb over a hydrophobic surface of a trough placed in the gaseous acid agent medium.
10 . A methylsilicic acid hydrogel having the formula:
[{CH 3 Si(OH) 2 O 0.5 } a/n {CH 3 Si(OH)O} b/n {CH 3 SiO 1.5 } c/n }.x H 2 O, where
11
≤
x
≤
35
;
0
≤
a
n
≤
0.38;
0.16
_
≤
b
n
≤
0.90;
0.11
_
≤
c
n
≤
0.60, wherein the hydrogel is produced according to the method of claim 1 .
11 . The method according to claim 1 , wherein the methylsilicic acid hydrogel has the formula:
[{CH 3 Si(OH) 2 O 0.5 } a/n {CH 3 Si(OH)O} b/n {CH 3 SiO 1.5 } c/n }.x H 2 O, where
11
≤
x
≤
35
;
0
≤
a
n
≤
0.38
;
0.19
≤
b
n
≤
0.90
;
11
≤
c
n
≤
0.49
.
12 . The method according to claim 1 , wherein the gaseous acid agent is a gaseous acid anhydride.
13 . The method according to claim 12 , wherein the gaseous acid anhydride is carbon dioxide.
14 . The method according to claim 13 , wherein the carbon dioxide is fed through a bottom valve of the reactor.
15 . The method according to claim 13 , wherein the carbon dioxide is fed through a top valve of the reactor.
16 . The method according to claim 12 , wherein the gaseous acid anhydride is sulfur dioxide.
17 . The method according to claim 12 , wherein the gaseous acid anhydride is sulfur trioxide.
18 . The method according to claim 1 , wherein the gaseous acid agent is a strong acid.
19 . The method according to claim 18 , wherein the acid is hydrogen chloride.
20 . The method according to claim 1 , wherein the gaseous acid agent is hydrogen sulfide.
21 . The method according to claim 9 , wherein the sodium methyl siliconate is added dropwise over 20 minutes.
22 . The method according to claim 1 , wherein the method is performed using a closed system.
23 . The method according to claim 1 , wherein the method is performed using an open system.
24 . The method according to claim 14 , wherein the method is performed using a closed system.
25 . The method according to claim 15 , wherein the method is performed using an open system.
26 . The method according to claim 13 , wherein the method is performed using a closed system.
27 . The method according to claim 13 , wherein the method is performed using an open system.
28 . The method according to claim 16 , wherein the method is performed using a closed system.
29 . The method according to claim 16 , wherein the method is performed using an open system.
30 . The method according to claim 17 , wherein the method is performed using a closed system.
31 . The method according to claim 17 , wherein the method is performed using an open system.
32 . The method according to claim 20 , wherein the method is performed using a closed system.
33 . The method according to claim 20 , wherein the method is performed using an open system.
34 . The method according to claim 21 , wherein the method is performed using a closed system.
35 . The method according to claim 21 , wherein the method is performed using an open system.Join the waitlist — get patent alerts
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