Modified Polyethylene Terephthalate Series (ECDP Cationic, Water-soluble, Low Melting Point, Flame-retardant, etc.)

Cationic Polyester: The main raw materials are terephthalic acid and ethylene glycol monomers.   The dyeing ability is enhanced by adding trimers and tetramers for copolymerization.

Water-soluble Polyester: The primary raw materials are terephthalic acid and ethylene glycol monomers.   The melting point is lowered and the hydrophilic function is enhanced by incorporating trimers and tetramers.

Low Melting Point Polyester: The primary raw materials are terephthalic acid and ethylene glycol monomers.   Modification is achieved by adding third and fourth monomers, and the varying proportions of modification lead to changes in the grades of low melting point polyesters.

For achieving flame retardancy, copolymers are formed by adding phosphorus-containing trimers.

Production facilities are categorized into batch and continuous types.   The batch type mainly includes single-reactor, double-reactor, and triple-reactor systems.   Continuous production primarily employs three-reactor, four-reactor, and five-reactor processes, which can usually be equipped with multifunctional reactor units of special design to achieve flexible production of multiple varieties.