Affinity of hardly soluble or insoluble substance solvent by water-soluble xylan

Patent metadata

Field	Value
Publication number	US-9315678-B2
Application number	US-16137107-A
Country	US
Kind code	B2
Filing date	Jan 19, 2007
Priority date	Jan 20, 2006
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

One object of the present invention is to provide a method of improving the affinity of a solvent for the surface of a hardly soluble or insoluble substances. Further object of the invention is providing a molded article comprising a hardly soluble or insoluble substances using the solution of a hardly soluble or insoluble substances. A method for improving affinity of a substance surface for a solvent, comprising: bringing the substance surface into contact with water-soluble xylan and the solvent, wherein the substance is hardly soluble or insoluble in the solvent in the absence of the water-soluble xylan. A solution comprising an added water-soluble xylan, a substance, and a solvent, wherein the substance is hardly soluble or insoluble in the solvent in the absence of the water-soluble xylan. A molded article comprising the added water-soluble xylan and the hardly soluble substance.

First claim

The invention claimed is:

1. A solution comprising an added water-soluble xylan, wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by β-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL, a substance, and a solvent, wherein only less than about 10 g of the substance can be dissolved in 1 L of the solvent in the absence of the water-soluble xylan, wherein said substance is a carbon nanotube, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less, wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan.

2. The solution according to claim 1 , wherein said carbon nanotube is a single-layer carbon nanotube.

3. The solution according to claim 1 , wherein said solvent is water.

4. The solution according to claim 1 , wherein the concentration of the carbon nanotube is 50 mg/L or more.

5. The solution according to claim 1 , wherein the concentration of the carbon nanotube is 1 g/L or more.

6. A solution comprising an added water-soluble xylan, wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by β-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL, a substance, and a solvent, wherein only less than about 10 g of the substance can be dissolved in 1 L of the solvent in the absence of the water-soluble xylan, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less, wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan,
wherein said water-soluble xylan is derived from woody plants.

7. The solution according to claim 6 , wherein said water-soluble xylan is derived from hardwood.

8. The solution according to claim 6 , wherein said substance is a carbon nanotube.

9. A molded article comprising an added water-soluble xylan, wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by beta-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL; and a substance; wherein only less than about 10 g of the substance can be dissolved in 1 L of a solvent in the absence of the water-soluble xylan, wherein said substance is a carbon nanotube, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less, wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan.

10. The molded article according to claim 9 , wherein said carbon nanotube is a single-layer carbon nanotube.

11. The molded article according to claim 9 , wherein said molded article is molded from a material comprising a solution in which the solvent of the solution is water alone.

12. The molded article according to claim 9 , wherein said molded article is a film or a fiber.

13. The molded article according to claim 9 , wherein said molded article is a drawn film.

14. A molded article comprising an added water-soluble xylan, wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by beta-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL, and a substance; wherein only less than about 10 g of the substance can be dissolved in 1 L of the solvent in the absence of the water-soluble xylan, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less, wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan,
wherein said water-soluble xylan is derived from woody plants.

15. The molded article according to claim 14 , wherein said water-soluble xylan is derived from hardwood.

16. The molded article according to claim 14 , wherein said substance is a carbon nanotube.

17. A gel comprising an added water-soluble xylan, wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by beta-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL, and a substance; wherein only less than about 10 g of the substance can be dissolved in 1 L of a solvent in the absence of the water-soluble xylan, wherein said substance is a carbon nanotube, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less, wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan.

18. A solution obtained from a method, wherein the method comprises:
bringing a substance into contact with a water-soluble xylan and a solvent,
wherein only less than about 10 g of the substance can be dissolved in 1 L of the solvent in the absence of the water-soluble xylan, wherein said substance is a carbon nanotube,
wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by β-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less,
wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan.

19. The solution according to claim 18 , wherein said carbon nanotube is a single-layer carbon nanotube.

20. The solution according to claim 18 , wherein said solvent is water.

21. The solution according to claim 18 , wherein the concentration of the carbon nanotube is 50 mg/L or more.

22. The solution according to claim 18 , wherein the concentration of the carbon nanotube is 1 g/L or more.

23. A solution obtained from a method, wherein the method comprises:
bringing a substance into contact with a water-soluble xylan and a solvent,
wherein only less than about 10 g of the substance can be dissolved in 1 L of the solvent in the absence of the water-soluble xylan,
wherein the water-soluble xylan is a molecule having six or more xylose residues connected to each other by β-1,4 bonds and is capable of dissolving in water at 20° C. at a concentration of at least 6 mg/mL, wherein the number average degree of polymerization of the main chain of said water-soluble xylan is 6 or more and 5,000 or less, wherein the number-average molecular weight of said water-soluble xylan is 7,000 or more and 1,000,000 or less, wherein said water-soluble xylan is unmodified glucuronoxylan or unmodified arabinoglucuronoxylan
wherein said water-soluble xylan is derived from woody plants.

Assignees

• Kitamura Shinichi
• Terada Yoshinobu
• Takaha Takeshi
• Ikeda Motohide
• Ezaki Glico Co
• Univ Osaka Prefect Public Corp

Inventors

• Kitamura Shinichi
• Terada Yoshinobu
• Takaha Takeshi
• Ikeda Motohide

Classifications

• C08B37/0057

  beta-D-Xylans, i.e. xylosaccharide, e.g. arabinoxylan, arabinofuronan, pentosans; (beta-1,3)(beta-1,4)-D-Xylans, e.g. rhodymenans; Hemicellulose; Derivatives thereof · CPC title

• C08L5/14

  Hemicellulose; Derivatives thereof · CPC title

• C08B1/003

  Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids (solutions used in the manufacture of monocomponent artificial filaments or cellulose or derivatives thereof D01F2/02) · CPC title

• C08B37/0003

  General processes for their isolation or fractionation, e.g. purification or extraction from biomass · CPC title

• C09D5/24 Primary

  Electrically-conducting paints {(conductive materials H01B1/00)} · CPC title