Artificial leather and manufacturing method therefor
US-2024384463-A1 · Nov 21, 2024 · US
Base body for artificial leather
US10626548B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10626548-B2 |
| Application number | US-201314424323-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 29, 2013 |
| Priority date | Aug 31, 2012 |
| Publication date | Apr 21, 2020 |
| Grant date | Apr 21, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
A base body for an artificial leather includes an intertwined fiber body mainly including an ultrafine fiber having a 0.01 to 10 μm fiber diameter and an elastic polymer, the ultrafine fiber including, as a constituent polymer, a polyester obtained from a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component.
First claim
Opening claim text (preview).
The invention claimed is: 1. A base body for a napped artificial leather consisting of a nonwoven fabric prepared by intertwining an ultrafine fiber layer consisting of an ultrafine fiber having a 0.01 to 5 μm fiber diameter and 5 to 100% by mass of an elastic polymer impregnated into the nonwoven fabric, the ultrafine fiber comprising polyester as a constituent component, the polyester comprising a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol as copolymerization components, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component, wherein the ultrafine fiber is dispersed on a surface of the base body and one surface of the base body is subjected to a napping treatment, and wherein the napped artificial leather has a product abrasion level determined by a Martin Dale Abrasion Evaluation of four or more. 2. The base body for a napped artificial leather according to claim 1 , wherein the 1,2-propanediol-derived component is present in an amount of 45 to 400 ppm in the polyester. 3. The base body for a napped artificial leather according to claim 1 , wherein a 5-sulfoisophthalic acid salt and/or an ester-forming derivative thereof are contained as the copolymerization components. 4. The base body for napped artificial leather according to claim 2 , wherein a 5-sulfoisophthalic acid salt and/or an ester-forming derivative thereof are contained as the copolymerization components. 5. The base body for a napped artificial leather according to claim 1 , wherein the elastic polymer is polyurethane. 6. A napped artificial leather consisting of a base body consisting of a nonwoven fabric prepared by intertwining an ultrafine fiber layer consisting of an ultrafine fiber having a 0.01 to 5 μm fiber diameter and 5 to 100% by mass of an elastic polymer impregnated into the nonwoven fabric, the ultrafine fiber comprising polyester as a constituent component, the polyester comprising a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol as copolymerization components, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component, wherein the ultrafine fiber is dispersed on a surface of the base body and one surface of the base body is subjected to a napping treatment, and wherein the napped artificial leather has a product abrasion level determined by a Martin Dale Abrasion Evaluation of four or more.
Assignees
Inventors
Classifications
Dicarboxylic acids and dihydroxy compounds · CPC title
Polyester fibres (for elastomeric fibres D06N3/0025) · CPC title
Monolayer with structurally defined element · CPC title
Resistant to abrasion, scratch · CPC title
from copolyesters · CPC title
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Frequently asked questions
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- What does patent US10626548B2 cover?
- A base body for an artificial leather includes an intertwined fiber body mainly including an ultrafine fiber having a 0.01 to 10 μm fiber diameter and an elastic polymer, the ultrafine fiber including, as a constituent polymer, a polyester obtained from a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification D06N3/0004. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Apr 21 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).