Easy to dye fiber means easy to dye fiber. In textiles, color gives the first impression, so the ease of fiber dyeing is an ^ important indicator, natural fibers and recycled fibers dyeing is easier because the molecular structure of these fibers contain groups that can be combined with dyes, while ordinary polyester high crystallinity, high orientation, the lack of groups that can be combined with acidic, alkaline and direct dyes, and therefore difficult to dye, generally to be in high temperature and high pressure process conditions It can only be dyed with disperse dyestuff under high temperature and high pressure process conditions or with my body, which requires high equipment and is a complicated process. Easy-dyeing fibers solve the above difficulties and are commonly available as follows.

(1) room temperature and pressure carrier-free dyeable polyester it is the use of copolymerization or block copolymerization, blending and other methods, so that polyester in the case of no carrier, dyeing temperature below 100 ℃, available disperse dyestuff dyeing. Such as a small amount of asked benzodicarboxylic acid and other diacid or diol and terephthalic acid, ethylene glycol copolymerization of polyester fiber PETI (85/15) polybutylene terephthalate PBT blended fiber, etc.

(2) cationic dyes can dye polyester cationic dyes are named because of the positive charge on the dye pigment, with a full range of chromatography, bright color, low price, simple dyeing process, etc., is a synthetic dyes, through copolymerization, graft copolymerization, adding criminal law and other methods can give polyester to cationic dyes dyeability.

Its variety is also more, ordinary cationic dyestuff dyeable polyester must be in high temperature, high pressure or add carrier conditions to have good dyeing, and high temperature will prompt cationic dyestuff hydrolysis, and therefore developed a normal pressure without carrier boiling dye cationic dyestuff dyeable polyester. Easy to dye fibers so that the fabric by a simple dyeing process can be obtained in a variety of colors, and therefore the color of rich fabrics need to use easy to dye fibers.

In the production process of fiber spinning, the addition of dyes, pigments or fluorescent agents, etc. to achieve the look of color fiber, called coloring fiber or colored fiber, such as coloring polyester or if the color nylon, also known as colored polyester or colored nylon. Coloring fiber color fastness, sunlight resistance, not easy to fade, can save fabric weaving before and after processing, dyeing, washing, drying and other multi-processes, but also to solve the problem of conventional polyester difficult to dye, and weaving lattice fabrics, jacquard fabrics and other multi-color fabrics ^ convenient, but the cost of raw materials is higher. Ties and other colorful, high color fastness requirements of the fabric commonly used coloring fiber.