US2019390400A1PendingUtilityA1

Process for dyeing a textile substrate containing residual oligomers

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Assignee: FAR EASTERN NEW CENTURY CORPPriority: Jun 21, 2018Filed: Feb 22, 2019Published: Dec 26, 2019
Est. expiryJun 21, 2038(~11.9 yrs left)· nominal 20-yr term from priority
Inventors:Jau-Tzeng WangHsin-Yun HuangI-Han Chen
D06P 1/94D06P 1/16D06P 3/54D06P 5/001D06P 3/52
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Claims

Abstract

A process for dyeing a textile substrate containing residual oligomers includes the steps of: a) attaching the textile substrate on a mounting carrier to constitute a substrate-loaded carrier which is to be subjected to supercritical dyeing in a dyeing autoclave; and b) overlying the textile substrate with a micro-porous film which includes pores having a pore size such that when the textile substrate is dyed in the dyeing autoclave, a dye-containing supercritical fluid is allowed to pass through the micro-porous film to permit the textile substrate to be dyed while the residual oligomers entrained in the supercritical fluid are retained by the micro-porous film.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A process for dyeing a textile substrate containing residual oligomers, comprising the steps of:
 a) attaching the textile substrate on a mounting carrier to constitute a substrate-loaded carrier which is to be subjected to supercritical dyeing in a dyeing autoclave; and   b) overlying the textile substrate of the substrate-loaded carrier with a micro-porous film which includes pores having a pore size such that when the textile substrate is dyed in the dyeing autoclave, a dye-containing supercritical fluid is allowed to pass through the micro-porous film to permit the textile substrate to be dyed while the residual oligomers entrained in the supercritical fluid are retained by the micro-porous film.   
     
     
         2 . The process according to  claim 1 , wherein the pore size of the pores of the micro-porous film is smaller than a particle size of the residual oligomers. 
     
     
         3 . The process according to  claim 2 , wherein the pore size of the pores of the micro-porous film is in a range from 0.1 μm to 1.0 μm. 
     
     
         4 . The process according to  claim 3 , wherein the pore size of the pores of the micro-porous film is in a range from 0.2 μm to 0.8 μm. 
     
     
         5 . The process according to  claim 1 , wherein the micro-porous film has a thickness in a range from 10 mm to 90 mm. 
     
     
         6 . The process according to  claim 1 , wherein the micro-porous film is made from a polymeric material. 
     
     
         7 . The process according to  claim 6 , wherein the polymeric material is polytetrafluoroethylene. 
     
     
         8 . The process according to  claim 6 , wherein the polymeric material is polyurethane. 
     
     
         9 . The process according to  claim 6 , wherein the polymeric material is polypropylene. 
     
     
         10 . The process according to  claim 1 , wherein the textile substrate is made from a polyester material. 
     
     
         11 . The process according to  claim 1 , wherein the dye-containing supercritical fluid includes a disperse dye. 
     
     
         12 . The process according to  claim 1 , wherein in step a), the mounting carrier is tubular-shaped, and the textile substrate is wound on the tubular-shaped mounting carrier around an axis. 
     
     
         13 . The process according to  claim 1 , wherein the dye-containing supercritical fluid includes supercritical carbon dioxide.

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