Synthetic leather

Patent metadata

Field	Value
Publication number	US-11434602-B2
Application number	US-201816756283-A
Country	US
Kind code	B2
Filing date	Oct 26, 2018
Priority date	Oct 27, 2017
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A synthetic leather includes: a base cloth; on the base cloth, an adhesion layer, a skin layer, and a flame-retardant layer, in this order, in which the flame-retardant layer includes at least one selected from hydrotalcite or a hydrotalcite-like compound, and is a cured product of a composition that includes a binder and particles having an average particle diameter of from 10 nm to 2500 nm, and is a layer having a thickness of from 1 μm to 20 μm.

First claim

What is claimed is:

1. A synthetic leather comprising:
a base cloth; and
on the base cloth, an adhesion layer, a skin layer, and a flame-retardant layer, in this order, wherein the flame-retardant layer comprises at least one selected from hydrotalcite or a hydrotalcite-like compound, is a cured product of a composition that comprises a binder and particles having an average particle diameter of from 10 nm to 2500 nm, and is a layer having a thickness of from 1 μm to 5 μm,
wherein the hydrotalcite-like compound is a compound represented by General Formula (I) below,
[(A 1 ) 2+ 1−x (A 2 ) 3+ x (OH) 2 ][(B 1 ) n− x/n .m H 2 O]  General Formula (I)

wherein, in General Formula (I), (A 1 ) 2+ represents Ca 2+ , Mg 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , or Zn 2+ , and (A 2 ) 3+ represents Al 3+ , Ti from 3+ to 4+ , Cr 3+ , Fe 3+ , Co 3+ , or (Mo from 5+ to 6+ ),
(B 1 ) n− represents a sulfate derivative ion, a sulfonic acid derivative ion, or a phosphate derivative ion, and
x represents a number of from 0.20 to 0.33, n represents a valence of an anion, and m represents an arbitrary number.

2. The synthetic leather according to claim 1 , wherein at least one of the adhesion layer or the skin layer comprises a flame retardant.

3. The synthetic leather according to claim 1 , further comprising an intermediate layer between the adhesion layer and the skin layer.

4. The synthetic leather according to claim 3 , wherein the intermediate layer comprises a flame retardant.

5. A synthetic leather comprising:
a base cloth; and
on the base cloth, a resin layer and a flame-retardant layer, in this order, wherein the flame-retardant layer comprises at least one selected from hydrotalcite or a hydrotalcite-like compound, is a cured product of a composition that comprises a binder and particles having an average particle diameter of from 10 nm to 2500 nm, and is a layer having a thickness of from 1 μm to 5 μm,
wherein the hydrotalcite-like compound is a compound represented by General Formula (I) below,
[(A 1 ) 2+ 1−x (A 2 ) 3+ x (OH) 2 ][(B 1 ) n− x/n .m H 2 O]  General Formula (I)

wherein, in General Formula (I), (A 1 ) 2+ represents Ca 2+ , Mg 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , or Zn 2+ , and (A 2 ) 3+ + represents Al 3+ , Ti from 3+ to 4+ , Cr 3+ , Fe 3+ , Co 3+ , or (Mo from 5+ to 6+ ),
(B 1 ) n− represents a sulfate derivative ion, a sulfonic acid derivative ion, or a phosphate derivative ion, and
x represents a number of from 0.20 to 0.33, n represents a valence of an anion, and m represents an arbitrary number.

6. The synthetic leather according to claim 5 , wherein the resin layer comprises a vinyl chloride resin.

7. The synthetic leather according to claim 1 , wherein the base cloth comprises at least one flame-retardant fiber selected from the group consisting of an aramid fiber, a meta-aramid fiber, a polyphenylene sulfide fiber, an acrylic fiber, a vinyl chloride fiber, a polychlal fiber, a vinylidene chloride fiber, an acrylic-vinyl chloride copolymer fiber, an acrylic-vinylidene chloride copolymer fiber, and a polybenzimidazole fiber.

8. The synthetic leather according to claim 1 , wherein the base cloth is a base cloth in which a non-flame retardant base cloth has been subjected to a flame-retardant treatment.

9. The synthetic leather according to claim 1 , wherein the flame-retardant layer comprises hydrotalcite.

10. The synthetic leather according to claim 1 , wherein the flame-retardant layer comprises the hydrotalcite-like compound.

11. The synthetic leather according to claim 5 , wherein the flame-retardant layer comprises hydrotalcite.

12. The synthetic leather according to claim 5 , wherein the flame-retardant layer comprises the hydrotalcite-like compound.

Assignees

• Kyowa Leather Cloth
• Nt&I Co Ltd
• Univ Shinshu

Inventors

• Sasase Tadahisa
• Kato Yusuke
• Hosoo Shohei
• Murakami Yasushi

Classifications

• D06N3/0063 Primary

  Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds · CPC title

• D06N2209/067

  Flame resistant, fire resistant · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• D06N3/14

  with polyurethanes · CPC title

• D06N2205/103

  Nanoparticles · CPC title