As we all know, because transparent dyes are mostly composed of the original dyes of disperse dyes, they have a certain solubility in polyester, which avoids the dispersion process required for pigments, and its compatibility with polyester is very good. Can be used for polyester fiber dope spinning.

However, due to the high spinning temperature of polyester, it is necessary to choose advanced oil-soluble dyes with heat resistance higher than 300 ℃. In addition, because the spinning products are used for fabrics, the sun fastness and various wet treatment fastness of oil-soluble dyes must meet certain requirements.

The following varieties can be used for polyester fiber dope spinning: yellow GG (solvent yellow 133), red G (solvent red 212), EG red (solvent red 135), red BB (solvent red 195), blue 2RA (solvent blue 122 ), Blue 2RA (solvent blue 67), purple BA (dispersed violet 57), purple G (solvent violet 49), bayonet RA (solvent violet 45), green G (solvent green 28), brown R (solvent brown 53). In addition to the above varieties, there are also Polysynthren series dyes which are also suitable for pre-spinning of polyester fibers and fine denier yarns. These pure dyes do not contain Polysynthren Yellow GG, Polysynthren Red GFP, Polysynthren Red FBL, Polysynthren Purple G.

Therefore, many domestic polyester yarn companies should choose high-quality and reliable polyester masterbatches for use, especially the products of polyester masterbatches manufacturers that meet the ISO9000 standard, so that polyester yarn companies will not be affected by the The reason is that the product has a serious "color difference" phenomenon, and downstream weaving companies will not weave cloths with "color difference".

The above is the answer for polyester masterbatch manufacturers on the correct choice of dyes.