Method of making a textile substrate with a continuous coating of a mixture of polyester polyurethane and polycarbonate polyurethane

Patent metadata

Field	Value
Publication number	US-2017190932-A1
Application number	US-201715466463-A
Country	US
Kind code	A1
Filing date	Mar 22, 2017
Priority date	Dec 17, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

A coated textile substrate containing a textile substrate having an inner side and an outer side and a continuous coating on at least the one side of the textile substrate. The continuous coating comprises a mixture of polyester polyurethane and polycarbonate polyurethane.

First claim

What is claimed is:

1 . A process for forming a coated textile comprising:
a. forming an aqueous polycarbonate polyurethane dispersion, wherein the polycarbonate polyurethane dispersion comprises a plurality of polycarbonate polyurethane particles and aqueous solution, wherein the polycarbonate polyurethane particles have an average particle size of less than about 1 micron; b. forming an aqueous polyester polyurethane dispersion, wherein the polyester polyurethane dispersion comprises a plurality of polyester polyurethane particles and aqueous solution, wherein the polyester polyurethane particles have an average particle size less than 5 microns; c. mixing the polycarbonate polyurethane dispersion and the polyester polyurethane dispersion together forming a physical mixture, wherein the physical mixture contains between about 5 and 35% by weight polycarbonate polyurethane dispersion and between about 65 and 95% by weight polyester polyurethane dispersion; b. coating the physical mixture onto a textile substrate having an inner side and an outer side, wherein the coating at least covers one side of the textile; and, c. drying the coated textile using heat, wherein the heat dries of at least a portion of the aqueous component of the physical mixture and causes the polycarbonate polyurethane particles and polyester polyurethane particles to at least partially melt and bind to each other forming a continuous coating.

2 . The process of claim 1 , wherein the polycarbonate polyurethane dispersion comprises between about 25 and 60% by weight polycarbonate polyurethane particles.

3 . The process of claim 1 , wherein the polyester polyurethane dispersion comprises between about 40 and 75% by weight polyester polyurethane particles.

4 . The process of claim 1 , wherein the polycarbonate polyurethane particles have an average particle size of between about 100 and 800 nanometers.

5 . The process of claim 1 , wherein the polyester polyurethane particles have an average particle size less than 3 micron.

6 . The process of claim 1 , wherein the continuous coating has a weight per unit area of less than about 50 grams per square meter.

7 . The process of claim 1 , wherein the coating contains greater than about 70% by weight of polyester polyurethane.

8 . The process of claim 1 , wherein the coating contains less than about 30% by weight of polycarbonate polyurethane.

9 . The coated textile formed by the process of claim 1 .

10 . A vehicle comprising the coated textile of claim 9 .

Assignees

• Milliken & Co

Inventors

• Keshavaraj Ramesh

Classifications

• D06M2200/00

  Functionality of the treatment composition and/or properties imparted to the textile material · CPC title

• C09D175/06 Primary

  from polyesters · CPC title

• C09D175/04

  Polyurethanes · CPC title

• D06M15/564 Primary

  Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them · CPC title

• D06M15/513

  Polycarbonates · CPC title