Cationic Dye Polyester Fibers (CD)

      Cationic dye polyester fibers can be produced with sodium dimethyl sulfoisophthalate (Na-SIPM) or lithium sulfoisophthalic acid (Li-SIPA).

Low strength Na-SIPE CD has better hand feel; High strength Li-SIPE CD has:

(1) Higher intrinsic viscosity；          

(2) Lower melt viscosity, higher CP capacity;

(3) Longer spinneret life；                

(4) Lower spinning breaks;

(5) DTY speed increase 20%;           

(6) Can spin microdenier fiber (denier 0.8);

(7) Fast dyeing, bright color;             

(8) Can be dyed together with spandex.

In the U.S. market of cationic dye polyester, Na-SIPM is 2.0 mole% of polyester (3.0 wt%).  In China market, Na-SIPM is 1.66 mole% of polyester (2.5 wt%). Glysil can help clients adjust the content of Na-SIPM in polyester to meet market needs.

A key to high quality cationic dye polyester is the uniform dispersion of Na-SIPE.  We have decade of experience in both low strength Na-SIPE and high strength Li-SIPE polyester, especially in SIPE solution preparation and CP.  Glysil Chemicals Inc. provides complete technology package including  Glysil^® GS-16 (Na-SIPE 40%) or Glysil^® GS-15 (Li-SIPE 40%) solution receipt, equipment specification, procedures, and polymerization.  

Examples of clients that used Glysil technology to produce cationic dye polyester in CP:

Reliance in India, 100 tons/day CP cationic dye polyester staple.

Wujiang Fudong Textile Group in China, 180 tons/day cationic dye FDY and chip.

Zhejiang Euro-Asia in China, CP-2 120 tons/day cationic dye polyester staple.

Zhejiang Cifu in China, CP-2 300 tons/day cationic dye polyester POY.

Alok Industries in India, CP-5 70 tons/day cationic dye polyester POY and FDY.