Stain-resistant fibers, textiles and carpets

Abstract

The present invention relates to stain- or dye-resistant light colored fibers, textiles and carpets made of a polymer composition (C) comprising at least one semi-aromatic polyamide comprising recurring units resulting from the condensation of terephthalic acid and at least one aliphatic diamine selected from the group consisting of 1,8-octanediamine, 1,9-nonanediamine, 2-methyl-1,8-octanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 2,2,4-trimethyl-1,6-hexanediamine, 2,4,4-trimethyl-1,6-hexanediamine, 5-methyl-1,9-nonanediamine, methylcyclohexanediamine, isophoronediamine and mixtures thereof.

1 . A fiber comprising a polymer composition (C), wherein said polymer composition (C) comprises at least one semi-aromatic polyamide comprising recurring units resulting from the condensation of terephthalic acid and at least one aliphatic diamine selected from the group consisting of 1,8-octanediamine, 1,9-nonanediamine, 2-methyl-1,8-octanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 2,2,4-trimethyl-1,6-hexanediamine, 2,4,4-trimethyl-1,6-hexanediamine, 5-methyl-1,9-nonanediamine, methylcyclohexanediamine, isophoronediamine and mixtures thereof, wherein the color of said fiber has a lightness (L*) of at least 50 in the CIE 1976 (L*, a*, b*) color space when measured according to ASTM E308-08. 
     
     
         2 . The fiber according to  claim 1 , wherein the color of said fiber has a lightness (L*) of at least 70 in the CIE 1976 (L*, a*, b*) color space when measured according to ASTM E308-08. 
     
     
         3 . The fiber according to  claim 1 , wherein the aliphatic diamine is selected from the group consisting of 1,9-nonanediamine, 2-methyl-1,8-octanediamine, 1,10-decanediamine, 1,12-dodecanediamine and mixtures thereof. 
     
     
         4 . The fiber according to  claim 3 , wherein the aliphatic diamine is selected from the group consisting of 1,9-nonanediamine, 1,10-decanediamine and mixtures thereof. 
     
     
         5 . The fiber according to  claim 3 , wherein the semi-aromatic polyamide is selected from the group consisting of PA9T, PA10T, PA12T and mixtures thereof. 
     
     
         6 . The fiber according to  claim 1 , wherein the polymer composition (C) comprises more than 30 wt. % of the semi-aromatic polyamide, based on the total weight of the polymer composition (C). 
     
     
         7 . The fiber according to  claim 1 , wherein the polymer composition (C) further comprises at least 1 wt. % of one or more pigments, based on the total weight of the polymer composition (C). 
     
     
         8 . The fiber according to  claim 7 , wherein the pigments comprise a white pigment. 
     
     
         9 . The fiber according to  claim 8 , wherein the white pigment is selected from the group consisting of titanium dioxide, barium sulfate and zinc sulfide. 
     
     
         10 . A textile comprising the fiber according to  claim 1 . 
     
     
         11 . A carpet comprising the fiber according to  claim 1 . 
     
     
         12 . The fiber according to  claim 1  having a stain-resistance rating of 1 on the Stain Rating Scale of the Stain Test Method. 
     
     
         13 . A method for conferring anti-staining properties to fibers, textiles or carpets comprising using a semi-aromatic polyamide, wherein said polyamide comprises recurring units resulting from the condensation of terephthalic acid and an aliphatic diamine selected from the group consisting of 1,8-octanediamine, 1,9-nonanediamine, 2-methyl-1,8-octanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 2,2,4-trimethyl-1,6-hexanediamine, 2,4,4-trimethyl-1,6-hexanediamine, 5-methyl-1,9-nonanediamine, methylcyclohexanediamine, isophoronediamine and mixtures thereof. 
     
     
         14 . A method for manufacturing textile or carpet comprising using the fiber according to  claim 1 . 
     
     
         15 . The fiber according to  claim 5 , wherein the semi-aromatic polyamide is PA9T or PA 10T.