Method of producing porous body
US-2019276629-A1 · Sep 12, 2019 · US
Method for manufacturing synthetic leather
US11001963B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11001963-B2 |
| Application number | US-201816646498-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 9, 2018 |
| Priority date | Sep 14, 2017 |
| Publication date | May 11, 2021 |
| Grant date | May 11, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention is to provide a method for manufacturing synthetic leather in which, after obtaining a thickened liquid by adding a thickening agent (B) with an oxyethylene group content of 2×10−2 mol/g or less to an aqueous urethane resin composition containing an aqueous urethane resin (A) having an acid value of 0.01 mgKOH/g or higher in a range of 0.01 to 30 parts by mass relative to 100 parts by mass of the aqueous urethane resin (A), the thickened liquid is coated on a base and coagulated with a coagulating agent (C) containing a metal salt (c-1). As the thickening agent, it is preferable to use one or more kinds of thickening agent that is selected from the group consisting of a cellulose thickening agent, an acryl thickening agent, and a urethane thickening agent. Furthermore, as the metal salt (c-1), calcium nitrate is preferable.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing synthetic leather in which, after obtaining a thickened liquid by adding a thickening agent (B) with an oxyethylene group content of 2×10 −2 mol/g or less to an aqueous urethane resin composition containing an aqueous urethane resin (A) having an acid value of 0.01 mgKOH/g or higher, the thickening agent (B) being added in a range of 0.01 to 30 parts by mass relative to 100 parts by mass of the aqueous urethane resin (A), the thickened liquid is coated on a base and coagulated in a coagulation bath (C) containing a metal salt (c-1), wherein the metal salt (c-1) is calcium nitrate, and no heating is used to coagulate the thickened liquid. 2. The method for manufacturing synthetic leather according to claim 1 , wherein the thickening agent (B) is one or more kinds selected from the group consisting of a cellulose thickening agent, an acryl thickening agent, and a urethane thickening agent.
Assignees
Inventors
Classifications
- D06N3/14Primary
with polyurethanes · CPC title
Calcium, strontium or barium carbonate · CPC title
Ethers; Acetals; Ketals; Ortho-esters · CPC title
Carbonates; Bicarbonates · CPC title
with cellulose derivatives · CPC title
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- What does patent US11001963B2 cover?
- The present invention is to provide a method for manufacturing synthetic leather in which, after obtaining a thickened liquid by adding a thickening agent (B) with an oxyethylene group content of 2×10−2 mol/g or less to an aqueous urethane resin composition containing an aqueous urethane resin (A) having an acid value of 0.01 mgKOH/g or higher in a range of 0.01 to 30 parts by mass relative to …
- Who is the assignee on this patent?
- Dainippon Ink & Chemicals
- What technology area does this patent fall under?
- Primary CPC classification D06N3/14. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue May 11 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).