what is the cation polyester material?

Cationic polyester

Cationic dyeable polyester, chemical name: polybutylene terephthalate (elastic polyester); English name: cationic dyed polyester; abbreviation: PBT, also used in the factory CD. Cationic polyester belongs to denatured/modified polyester and can be dyed with cationic dyes at 110 C.

Modification of Cationic Polyester Fiber

Cationic dyeable polyester is modified by copolymerization of polyester dyeable modifier, such as dimethyl isophthalate-5-sodium sulfonate (commonly known as trimer, English abbreviation SIPM) with polyester. Sulfonic acid group is introduced into the polyester molecular chain after copolymerization, which can be dyed with cationic dyes. The dyed fabric has bright colour, high dye exhaustion rate, greatly reducing the discharge of printing and dyeing wastewater, and copolyester. Chips can also increase antistatic, pilling and moisture absorption properties, which is one of the main methods to improve the dyeing properties of polyester fibers in recent years. The blend spinning of 4 cationic dyeable polyesters containing sulfonated isophthalate units and 1 block copolymer of ethylene glycol/polyethylene glycol/sulfonated sodium isophthalate/terephthalic acid by Yonigika Company of Japan can produce ultrafine fibers with high dyeing depth. Cationic activator and a small amount of modifier are added to BHET before or during spinning. Hydroxyethyl Acids) Copolymerization. The spinnability of the copolymers is improved after they are made into random linear copolymers. The modified polyester not only can be dyed with cationic dyes, but also has anti-pilling property and improved wrinkle recovery.

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