Aqueous liquid composition, aqueous coating, functional coating film, and composite material

Patent metadata

Field	Value
Publication number	US-10400115-B2
Application number	US-201313956667-A
Country	US
Kind code	B2
Filing date	Aug 1, 2013
Priority date	Feb 23, 2011
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

An aqueous liquid composition contains a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.

First claim

The invention claimed is:

1. An aqueous liquid composition comprising:
a water-based medium comprising water;
a polymer having at least one group selected from the group consisting of hydroxyl groups and amino groups; and
phosphonobutanetricarboxylic acid,
wherein the polymer is at least one polymer selected from the group consisting of chitosan and salts thereof,
the polymer has a weight average molecular weight in a range from 5,000 to 1,000,000, and
the composition is capable of forming a hydrophilic coating film that maintains hydrophilicity expressed as a contact angle of a water drop in a range of smaller than 30°, after 10 cycles of washing and drying, in each of which the coating film is washed with running tap water for one hour at a flow rate of 1 L/min. and then dried at 80° C. for one hour.

2. The aqueous liquid composition according to claim 1 ,
with a proviso that the aqueous liquid composition is other than one comprising a solubilizer.

3. An aqueous liquid composition comprising:
a water-based medium comprising water;
a polymer having at least one group selected from the group consisting of hydroxyl groups and amino groups;
phosphonobutanetricarboxylic acid; and
a conductive material,
wherein the polymer is at least one polymer selected from the group consisting of chitosan and salts thereof,
the polymer has a weight average molecular weight in a range from 5,000 to 1,000,000, and
the composition is capable of forming a hydrophilic coating film that maintains hydrophilicity expressed as a contact angle of a water drop in a range of smaller than 30°, after 10 cycles of washing and drying, in each of which the coating film is washed with running tap water for one hour at a flow rate of 1 L/min. and then dried at 80° C. for one hour.

4. The aqueous liquid composition according to claim 3 ,
wherein the conductive material comprises at least one conductive material selected from the group consisting of acetylene black, Ketjenblack, graphite, furnace black, monolayer and multilayer carbon nanofibers, and monolayer and multilayer carbon nanotubes.

5. The aqueous liquid composition according to claim 1 , further comprising a polymeric acid,
wherein the polymeric acid is at least one material selected from the group consisting of a homopolymer of a carboxyl-containing vinyl monomer and a copolymer of the carboxyl-containing vinyl monomer and a carboxyl-free vinyl monomer.

6. The aqueous liquid composition according to claim 5 ,
wherein the polymeric acid is at least one polymeric acid selected from the group consisting of polyacrylic acid, polymaleic acid and polyitaconic acid.

7. The aqueous liquid composition according to claim 1 , further comprising at least one material selected from the group consisting of a polyalkylene glycol and polyalkylene oxide.

8. The aqueous liquid composition according to claim 1 ,
wherein a mass ratio (AB) of the polymer as (A) and the phosphonobutanetricarboxylic acid as (B) is in a range from 1/5 to 5/1.

9. The aqueous liquid composition according to claim 1 ,
wherein a total solid concentration of the polymer and the phosphonobutanetricarboxylic acid is in a range from 0.1 to 40 mass %.

10. An aqueous coating formulation comprising the aqueous liquid composition according to claim 1 .

11. A functional coating film formed with the aqueous coating formulation according to claim 10 .

12. A functional coating film formed with an aqueous coating formulation comprising the aqueous liquid composition according to claim 3 , wherein the functional coating film has a surface resistivity of not higher than 3,000Ω/□ as measured following JIS K 7194.

13. A method for forming a functional coating film, comprising a step of heating the aqueous coating formulation according to claim 10 to at least 80° C.

14. A composite material provided with a base material and the functional coating film according to claim 11 arranged integrally on the base material.

15. The composite material according to claim 14 ,
wherein the base material is at least one base material selected from the group consisting of metals, glass, natural resins, synthetic resins, ceramics, wood, paper, fibers, non-woven fabrics, woven fabrics, and leather.

16. The composite material according to claim 14 ,
wherein the base material comprises at least one base material selected from the group consisting of aluminum, copper, nickel, and stainless steel.

17. An electrode plate member comprising:
a collector; and
a conductive coating film arranged on a surface of the collector,
wherein the conductive coating film has been formed by subjecting, to heat treatment, the aqueous liquid composition according to claim 3 coated on the surface of the collector.

18. The electrode plate member according to claim 17 ,
wherein the collector is a collector for a nonaqueous electrolyte secondary cell, for an electric double-layer capacitor, or for a lithium ion capacitor.

19. An electrode plate comprising:
the electrode plate member according to claim 17 ; and
an active material layer arranged on a surface of the conductive coating film.

20. An electricity storage device comprising the electrode plate according to claim 19 .

21. The electricity storage device according to claim 20 , which is a nonaqueous electrolyte secondary cell, an electric double-layer capacitor, or a lithium ion capacitor.

Assignees

• Dainichiseika Color Chem

Inventors

• Iijima Yoshihiko
• Hayashi Kozaburo
• Ichinomiya Yosuke

Classifications

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01G11/38

  Carbon pastes or blends; Binders or additives therein · CPC title

• H01B1/122

  Ionic conductors · CPC title

• C09D133/066

  containing -OH groups · CPC title