Stainproof fiber structure

Patent metadata

Field	Value
Publication number	US-10513820-B2
Application number	US-201615736049-A
Country	US
Kind code	B2
Filing date	Jul 1, 2016
Priority date	Jul 6, 2015
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

A soil resistant fiber structure, including a fiber and a soil resistant resin fixed to at least a part of a surface of the fiber, wherein the resin has, in at least a part inside the resin, one or more regions dyed with osmium oxide as observed with a transmission electron microscope, at least one of the regions is circular, the regions have a maximum diameter of 100 nm or more and 500 nm or less, and the soil resistant fiber structure has a mass concentration ratio of oxygen atoms to fluorine atoms (O/F) of 3 or more as obtained by measuring the surface of the fiber with an energy dispersive X-ray analyzer. The present invention provides a fiber structure having high anti-adhesion property against aqueous soils and oily soils as well as soil release property by washing.

First claim

The invention claimed is:

1. A soil resistant fiber structure, comprising a fiber and a soil resistant resin fixed to at least a part of a surface of the fiber,
wherein the resin has, in at least a part inside the resin, one or more regions dyed with osmium oxide as observed with a transmission electron microscope,
at least one of the regions is circular,
the regions have a maximum diameter of 100 nm or more and 500 nm or less, and
the soil resistant fiber structure has a mass concentration ratio of oxygen atoms to fluorine atoms (O/F) of 3 or more as obtained by measuring the surface of the fiber with an energy dispersive X-ray analyzer.

2. The soil resistant fiber structure according to claim 1 , wherein the resin has a plurality of the regions inside the resin, and the dyed regions are individually separated and scattered.

3. The soil resistant fiber structure according to claim 2 , wherein the regions have a hydrophilic component and a hydrophobic component.

4. The soil resistant fiber structure according to claim 3 , wherein the hydrophilic component is polyethylene glycol.

5. The soil resistant fiber structure according to claim 1 , wherein the resin has a perfluorooctanoic acid content less than a detection limit.

6. The soil resistant fiber structure according to claim 5 , wherein the resin contains a compound represented by the following general formula (I) as a polymerization component:
CH 2 ═C(CH 3 )C(═O)OCH 2 CH 2 (CF 2 ) 5 CF 3   (I).

7. The soil resistant fiber structure according to claim 1 , having a soil release property in a soil release test of grade 3 or higher after 50 times of industrial wash.

Assignees

• Toray Industries

Inventors

• Otsuka Azuki
• Komori Shinya
• Karasawa Rumi
• Takeda Keiji

Classifications

• G01N23/225

  using electron or ion · CPC title

• D06P1/0076

  Dyeing with mineral dye · CPC title

• D06M15/277 Primary

  containing fluorine · CPC title

• D06M2200/01

  Stain or soil resistance · CPC title

• D06M15/53

  Polyethers (polyacetals D06M15/39) · CPC title