Modified polyester filament, hetero-shrinkage conjugate polyester filament and their fabrics

Abstract

Disclosed is to provide a modified polyester filament, which is formed by spinning the polyester resin composed of ethylene terephthalate more than 85 mol % as main component repeating unit, and component A organic sulfonate shown as the formula listed below RSO 3 M [wherein R is selected from alkyl group of carbon 3 to 30, aromatic group and alkyl aromatic group of carbon 7 to 40; M is selected from alkali metal, alkali earth metal] and component B polyalkylene glycol and satisfies the following three conditions (1) the content of said component A RSO 3 M is from 0.4 weight % to 5 weight %; (2) the content of said component B polyalkylene glycol is from 0.4 weight % to 5 weight %; (3) said polyester filament obtained by spinning is subjected to alkali treatment to reduce the weight in an amount of 5-45% with 60˜130° C. alkali solution of concentration 0.2 to 8.0 weight %, dyeing to get polyester filament having 0.1˜0.001 d.p.f. (denier per filament) ultrafine fluffs thereon Fabric woven by using the hetero-shrinkage conjugate polyester filament textured yarn made by combining the modified polyester filament with high boiling water shrinkage filament and draw twisting has soft, puffy, dry feeling and natural fiber like hand, can elevate the commercial value of polyester filament, suitable to high grade clothing.

What is claimed is:  
     
         1 . A modified polyester filament, which is formed by spinning the polyester resin composed of ethylene terephthalate more than 85 mol % as main component repeating unit, and component A organic sulfonate shown as the formula listed below  
       RSO 3 M  
       [wherein R is selected from alkyl group of carbon 3 to 30, aromatic group and alkyl aromatic group of carbon 7 to 40; M is selected from alkali metal, alkali earth metal] and component B polyalkylene glycol and satisfies the following three conditions 
 (1) the content of said component A RSO 3 M is from 0.4 weight % to 5 weight %;  
 (2) the content of said component B polyalkylene glycol is from 0.4 weight % to 5 weight %;  
 (3) said polyester filament obtained by spinning is subjected to alkali treatment to reduce the weight in an amount of 5-45% with 60˜130° C. alkali solution of concentration 0.2 to 8.0 weight %, dyeing to get polyester filament having 0.1˜0.001 d.p.f. (denier per filament) ultrafine fluffs thereon  
 
     
     
         2 . The modified polyester filament according to  claim 1 , wherein component A is selected from sodium alkyl (C 12  to C 15 ) sulfonate.  
     
     
         3 . The modified polyester filament according to  claim 1 , wherein component B is selected from polyethylene glycol of molecular weight from 5,000 to 50,000.  
     
     
         4 . The modified polyester filament according to  claim 1 , wherein component A and component B are added in the stage of manufacturing polyester.  
     
     
         5 . A hetero-shrinkage conjugate yarn, which is formed by combining the filament of  claim 1  with filament having high boiling water shrinkage greater than 8% and greater than that of the filament of  claim 1 , drawing and twisting.  
     
     
         6 . The hetero-shrinkage conjugate yarn according to  claim 5 , wherein the hetero-shrinkage conjugate yarn is hetero-shrinkage conjugate textured yarn.  
     
     
         7 . The hetero-shrinkage conjugate yarn according to  claim 5 , wherein the hetero-shrinkage conjugate yarn is hetero-shrinkage conjugate filament.  
     
     
         8 . A fabric woven by using the modified polyester filament according to  claim 1 .  
     
     
         9 . A fabric woven by using the hetero-shrinkage conjugate yarn according to  claim 5   
     
     
         10 . A fabric woven by using the hetero-shrinkage conjugate yarn according to  claim 6 .  
     
     
         11 . A fabric woven by using the hetero-shrinkage conjugate yarn according to  claim 7