Superabsorbent polymer composition

Patent metadata

Field	Value
Publication number	US-10583052-B2
Application number	US-201615751705-A
Country	US
Kind code	B2
Filing date	Dec 1, 2016
Priority date	Dec 9, 2015
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

The present invention relates to a superabsorbent polymer composition. Since the superabsorbent polymer composition comprises aluminosilicate particles capable of effectively adsorbing and decreasing compounds inducing odor in sanitary products such as a diaper, etc. without deterioration of the properties of superabsorbent polymer such as centrifugal retention capacity, absorbency under load, and penetration, and does not induce caking, it can be usefully used in sanitary products, etc.

First claim

What is claimed is:

1. A superabsorbent polymer composition comprising:
a superabsorbent polymer formed by the polymerization of water-soluble ethylenically unsaturated monomers comprising acid groups, of which at least a part are neutralized; and
aluminosilicate particles having a bulk density of 0.900 to 1.000 g/cm 3 , on which organic acid is supported.

2. The superabsorbent polymer composition according to claim 1 , wherein, the organic acid is included in the content of 0.001 to 65 wt %, based on the total weight of the aluminosilicate particles on which organic acid is supported.

3. The superabsorbent polymer composition according to claim 1 , wherein the aluminosilicate particles on which organic acid is supported comprise particles having a particle diameter of 300 μm or more and less than 600 μm in the content of 50 to 80 wt %, based on the total weight of the aluminosilicate particles.

4. The superabsorbent polymer composition according to claim 1 , wherein the aluminosilicate particles on which organic acid is supported comprise particles having a particle diameter of less than 45 μm in the content of less than 0.5 wt %, based on the total weight of the aluminosilicate particles.

5. The superabsorbent polymer composition according to claim 1 , wherein the organic acid includes one or more selected from the group consisting of citric acid, fumaric acid, maleic acid and lactic acid.

6. The superabsorbent polymer composition according to claim 1 , wherein the aluminosilicate particles on which organic acid is supported further comprise silica.

7. The superabsorbent polymer composition according to claim 1 , wherein the aluminosilicate particles on which organic acid is supported are included in the content of 1 to 10 parts by weight, based on 100 parts by weight of the superabsorbent polymer.

8. The superabsorbent polymer composition according to claim 1 , wherein the removal rate of ammonia gas is 80% or more, when 1 g of the superabsorbent polymer composition of a dry state is put in a bag of 3 L volume, and then, 100 ppm of ammonia gas is introduced into the bag, and after 30 minutes, the removal rate of ammonia gas is measured.

9. The superabsorbent polymer composition according to claim 1 , wherein the removal rate of ammonia gas is 90% or more, when 1 g of the superabsorbent polymer of a dry state is swollen with 30 g of a saline solution (0.9 wt % NaCl solution) for 30 minutes and 0.5 g of the superabsorbent polymer of a swollen gel state is put into a bag of 3 L volume, and then, 500 ppm of ammonia gas is introduced into the bag, and after 30 minutes, the removal rate of ammonia gas is measured.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Jin Woo
• Kim Young Sam
• Yang Young In
• Kim Su Jin

Classifications

• C08K3/22 Primary

  of metals · CPC title

• A61L15/20

  containing organic materials · CPC title

• C08J2300/14

  Water soluble or water swellable polymers, e.g. aqueous gels · CPC title

• C08L101/00

  Compositions of unspecified macromolecular compounds · CPC title

• A61L15/46

  Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria · CPC title