DEODORANT AND METHOD OF PRODUCING THE SAME

• US 20190314539A1
• Filed: 06/27/2019
• Published: 10/17/2019
• Est. Priority Date: 02/04/2015
• Status: Abandoned Application

• Current Assignee: ZEON Corporation
• Original Assignee: ZEON Corporation
• Inventors: SONE, Atsushi
• Application Number:
  US16/454,188
• Publication Number:
  US 20190314539A1
• Time in Patent Office: Days
• CPC Class Codes: A61L 9/01 Deodorant compositions compositions released by contact with a liquid A61L9/05
• CPC Class Codes: B01D 2257/304 Hydrogen sulfide
• CPC Class Codes: B01D 2257/306 Organic sulfur compounds, e.g. mercaptans
• CPC Class Codes: B01D 2257/406 Ammonia
• CPC Class Codes: B01D 2257/90 Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
• CPC Class Codes: B01J 20/24 Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
• CPC Class Codes: B01J 20/30 Processes for preparing, regenerating, or reactivating
• CPC Class Codes: B01J 20/3236 containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
• CPC Class Codes: C08L 1/04 Oxycellulose; Hydrocellulose , e.g. microcrystalline cellulose
• CPC Class Codes: D06M 11/83 with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
• CPC Class Codes: D06M 2101/06 cellulosic

Abstract

Disclosed is a method of producing a deodorant. The method comprises: contacting oxidized cellulose nanofibers having carboxyl groups and containing ions of a first metal in salt form, dispersed in a solvent in the concentration of 0.005% by mass or more and 0.1% by mass or less, with a salt of a second metal other than the first metal to produce metal-containing oxidized cellulose nanofibers. The metal-containing oxidized cellulose nanofibers comprise the oxidized cellulose nanofibers having carboxyl groups and ions of the second metal, the ions of the second metal forming salts with the carboxyl groups of the oxidized cellulose nanofibers, and the metal-containing oxidized cellulose nanofibers have a number-average fiber diameter of 2 nm or more and 100 nm or less, where the second metal is a metal other than sodium.

Claims

1. A method of producing a deodorant, comprising:

contacting oxidized cellulose nanofibers having carboxyl groups and containing ions of a first metal in salt form, dispersed in a solvent in the concentration of 0.005% by mass or more and 0.1% by mass or less, with a salt of a second metal other than the first metal to produce metal-containing oxidized cellulose nanofibers, wherein

the metal-containing oxidized cellulose nanofibers comprise the oxidized cellulose nanofibers having carboxyl groups and ions of the second metal, the ions of the second metal forming salts with the carboxyl groups of the oxidized cellulose nanofibers, and the metal-containing oxidized cellulose nanofibers have a number-average fiber diameter of 2 nm or more and 100 nm or less, where

the second metal is a metal other than sodium.

3. The method of producing a deodorant of claim 1, wherein the metal-containing oxidized cellulose nanofibers have a number-average fiber length of 50 nm to 2,000 nm.

4. The method of producing a deodorant of claim 1, wherein the metal-containing oxidized cellulose nanofibers have an average degree of polymerization of 100 to 2,000.

5. The method of producing a deodorant of claim 1, wherein the first metal is sodium, and

the second metal is at least one metal selected from the group consisting of metals of Group 2 to Group 14 in Period 3 to Period 6 of the long periodic table.

6. The method of producing a deodorant of claim 1, wherein the first metal is sodium, and

the second metal is at least one metal selected from the group consisting of magnesium, aluminum, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, silver, tin, barium, and lead.

7. The method of producing a deodorant of claim 1, wherein the first metal is sodium, and

the second metal is at least one metal selected from the group consisting of aluminum, calcium, iron, cobalt, copper, zinc, and silver.

8. The method of producing a deodorant of claim 1, further comprising dispersing the metal-containing oxidized cellulose nanofibers in a dispersion medium.

9. The method of producing a deodorant of claim 8, wherein the dispersion medium is water.

2. A method of producing a deodorant, comprising:

contacting oxidized cellulose nanofibers having carboxyl groups and containing ions of a first metal in salt form, dispersed in a solvent, with a strong acid to substitute ions of the first metal contained in salt form by hydrogen atoms; and

contacting the oxidized cellulose nanofibers having carboxyl groups in which the ions of the first metal have been substituted by hydrogen atoms, dispersed in a solvent in the concentration of 0.005% by mass or more and 0.1% by mass or less, with a salt of a second metal other than the first metal to produce metal-containing oxidized cellulose nanofibers, wherein

the metal-containing oxidized cellulose nanofibers comprise the oxidized cellulose nanofibers having carboxyl groups and ions of the second metal, the ions of the second metal forming salts with the carboxyl groups of the oxidized cellulose nanofibers, and the metal-containing oxidized cellulose nanofibers have a number-average fiber diameter of 2 nm or more and 100 nm or less, where

the second metal is a metal other than sodium.

10. The method of producing a deodorant of claim 2, wherein the metal-containing oxidized cellulose nanofibers have a number-average fiber length of 50 nm to 2,000 nm.

11. The method of producing a deodorant of claim 2, wherein the metal-containing oxidized cellulose nanofibers have an average degree of polymerization of 100 to 2,000.

12. The method of producing a deodorant of claim 2, wherein the first metal is sodium, and

the second metal is at least one metal selected from the group consisting of metals of Group 2 to Group 14 in Period 3 to Period 6 of the long periodic table.

13. The method of producing a deodorant of claim 2, wherein the first metal is sodium, and

the second metal is at least one metal selected from the group consisting of magnesium, aluminum, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, silver, tin, barium, and lead.

14. The method of producing a deodorant of claim 2, wherein the first metal is sodium, and

the second metal is at least one metal selected from the group consisting of aluminum, calcium, iron, cobalt, copper, zinc, and silver.

15. The method of producing a deodorant of claim 2, further comprising dispersing the metal-containing oxidized cellulose nanofibers in a dispersion medium.

16. The method of producing a deodorant of claim 15, wherein the dispersion medium is water.