Flame retardant polyurethane artificial leather and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10640646-B2
Application number	US-201715858554-A
Country	US
Kind code	B2
Filing date	Dec 29, 2017
Priority date	Feb 17, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

Provided herein is a flame retardant polyurethane (PU) artificial leather and a method for manufacturing the flame retardant polyurethane (PU) artificial leather, wherein the method may include preparing a microfiber nonwoven fabric material, consecutively forming a polyurethane coating layer and an adhesive layer on one surface of a release paper, and combining the nonwoven fabric material and the release paper.

First claim

What is claimed is:

1. A method for manufacturing flame retardant polyurethane (PU) artificial leather comprising:
preparing a microfiber nonwoven fabric material;
consecutively forming a polyurethane coating layer and an adhesive layer on one surface of a release paper; and
combining the nonwoven fabric material and the release paper,
wherein the preparing step of the microfiber nonwoven fabric material comprises impregnating a nonwoven fabric into a polyurethane resin comprising a first flame retardant; and treating the impregnated nonwoven fabric with an alkali solvent to reduce the weight.

2. The method for manufacturing flame retardant PU artificial leather of claim 1 , wherein the polyurethane resin comprises the first flame retardant in greater than or equal to 40 parts per hundred parts of resin (PHR) and less than 50 PHR.

3. The method for manufacturing flame retardant PU artificial leather of claim 2 , wherein the first flame retardant is aluminum hydroxide (Al(OH) 3 ).

4. The method for manufacturing flame retardant PU artificial leather of claim 1 , wherein the adhesive layer comprises a second flame retardant in 20 PHR or greater.

5. The method for manufacturing flame retardant PU artificial leather of claim 4 , wherein the second flame retardant is a phosphorous-based flame retardant.

6. The method for manufacturing flame retardant PU artificial leather of claim 5 , wherein the second flame retardant is a non-soluble flame retardant having phosphorous content of 10% by weight or higher and alkalinity resistance of 60% or higher.

7. The method for manufacturing flame retardant PU artificial leather of claim 6 , wherein the second flame retardant is a powder-type flame retardant.

8. The method for manufacturing flame retardant PU artificial leather of claim 5 , wherein the second flame retardant is bis-amide phosphate.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Baiksan Co Ltd

Inventors

• Hwang Hye-Na
• Hong Sung-Joon
• Kim Han-Seok
• Kim Kyung-Nam
• Cho Seong-Ho
• Cha Yoon-Jong
• An Sung-Deuk

Classifications

• C09J175/04

  Polyurethanes · CPC title

• C08K5/5399

  Phosphorus bound to nitrogen · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title

• C08K2003/2227

  of aluminium · CPC title

• C08K3/22 Primary

  of metals · CPC title