Description

1,4-Benzenedicarboxylic Acid, 1,4-Dimethyl Ester, Polymer With 1,4-Butanediol And Hexanedioic Acid is a high-performance thermoplastic polyester copolymer, commonly known as a modified polybutylene terephthalate (PBT) or a copolyester. This engineered polymer is valued for its excellent balance of mechanical strength, thermal stability, and chemical resistance, making it a superior material for demanding applications. It is primarily sought by manufacturers in the automotive, electrical, and industrial sectors for producing durable components, fibers, and specialty films.

Application

• Automotive Components: Used in under-the-hood parts, connectors, and sensor housings due to its heat resistance and dimensional stability.
• Electrical & Electronics: Ideal for insulating materials, circuit board components, and connector housings requiring good dielectric properties.
• Engineering Plastics: Serves as a key resin for injection molding and extrusion of high-strength, wear-resistant industrial parts.
• Textile Fibers: Employed in the production of high-tenacity, low-shrinkage industrial and technical fibers.
• Packaging Films: Used to manufacture biaxially oriented films for specialty packaging that requires barrier properties and toughness.
• Polymer Modification: Acts as a compatibilizer or additive to enhance the properties of other polyester blends.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, 1,4-Dimethyl Ester, Polymer With 1,4-Butanediol And Hexanedioic Acid
CAS No.	55231-08-8
Molecular Formula	(C12H12O4 · C4H10O2 · C6H10O4)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(butylene terephthalate-co-adipate); PBT/A Copolyester; Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl-co-oxy-1,4-butanediyloxycarbonyl-1,5-pentanediylcarbonyl); Butanediol/Terephthalic Acid/Adipic Acid Copolymer; TPA-DMT-BDO-AA Polymer; Modified Polybutylene Terephthalate; Copolyester of Terephthalic Acid, Dimethyl Terephthalate, 1,4-Butanediol, and Adipic Acid
EINECS	Contact for details

Quality Control

Our copolymer is produced under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as intrinsic viscosity, melting point, and copolymer composition are rigorously controlled. Certificates of Analysis (COA) detailing specifications for individual grades are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong heat sources and open flames. As a thermoplastic polymer, prolonged exposure to high humidity should be avoided to prevent potential moisture absorption which can affect processing characteristics.

Specification

Item	Specification
Appearance	White to off-white pellets or granules
Intrinsic Viscosity (IV)	0.6 - 1.2 dL/g (Grade Dependent)
Melting Point (DSC)	160 - 220 °C
Moisture Content	< 0.1 %
Identification (IR)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.