	US 11,911,744 B2
	Superabsorbent materials and methods of making the same
Lijun Sun, La Canada Fintridge, CA (US)
Filed by SIMEON INVESTMENT, INC., Arcadia, CA (US)
Filed on Jun. 4, 2021, as Appl. No. 17/339,416.
Application 17/339,416 is a division of application No. 16/807,004, filed on Mar. 2, 2020, granted, now 11,045,786.
Application 16/807,004 is a continuation of application No. PCT/US2019/046077, filed on Aug. 10, 2019.
Claims priority of provisional application 62/717,644, filed on Aug. 10, 2018.
Prior Publication US 2021/0291144 A1, Sep. 23, 2021
Int. Cl. B01J 20/24 (2006.01); A61K 31/736 (2006.01); B01J 20/30 (2006.01)

CPC B01J 20/24 (2013.01) [A61K 31/736 (2013.01); B01J 20/3021 (2013.01); B01J 20/3078 (2013.01)]

21 Claims

1. A method of preparing a superabsorbent material that comprises two or more water-soluble natural polysaccharides, comprising:

Combining the two or more water-soluble natural polysaccharides with water to form a mixture;

heating the mixture until the two or more polysaccharides are completely dissolved;

cooling the mixture to form a gel;

freezing the gel to obtain a frozen gel;

thawing the frozen gel to obtain a thawed gel; and

drying the thawed gel at a temperature of between 50° C. and 60° C. to obtain the superabsorbent material;

wherein the superabsorbent material has a volume expansion ratio of at least 5 in deionized water at 25° C.