Description

1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Butanediol And Dimethyl 1,4-Benzenedicarboxylate is a high-performance thermoplastic polyester, commonly known as a polybutylene terephthalate (PBT) copolymer or modified PBT. This engineered polymer is valued for its excellent dimensional stability, good electrical insulation properties, and resistance to chemicals and heat. It is a critical material for manufacturers in the automotive, electrical & electronics, and industrial components sectors seeking durable and reliable engineering plastics.

Application

• Automotive Components: Used in under-the-hood parts, sensor housings, and connectors due to its heat and chemical resistance.
• Electrical & Electronics: Ideal for circuit breakers, switchgear, coil bobbins, and connectors requiring good dielectric strength and flame retardancy.
• Industrial Engineering: Manufacture of gears, bearings, pump housings, and other mechanical parts that demand high strength and low friction.
• Consumer Appliances: Components for power tools, kitchen appliance housings, and handles where durability and heat resistance are key.
• Fiber Optics: Secondary coating and cable jacketing materials benefiting from its mechanical robustness and environmental stability.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 1,4-Butanediol And Dimethyl 1,4-Benzenedicarboxylate
CAS No.	36008-14-7
Molecular Formula	(C12H12O4 · C4H10O2 · C10H10O4)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(butylene terephthalate) copolymer; Modified PBT; Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl); Poly(tetramethylene terephthalate) copolymer; Butylene terephthalate-isophthalate copolymer; PBT copolymer; PBIT; 1,4-Benzenedicarboxylic acid, 1,4-dimethyl ester, polymer with 1,4-butanediol and 1,3-benzenedicarboxylic acid
EINECS	Contact for details

Quality Control

Our polymer products are manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Key parameters such as intrinsic viscosity, melting point, and thermal stability are rigorously tested. Certificates of Analysis (COA) documenting full specifications are available upon request, and we can support compliance with relevant industry standards.

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. This material is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption which can affect processing properties.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Intrinsic Viscosity (IV)	0.6 - 1.2 dL/g (Typical)
Melting Point (DSC)	200 - 225 °C
Density	1.30 - 1.32 g/cm³
Moisture Content	< 0.1 %
Ash Content	< 0.1 %

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