Description

Poly(Butylene Terephthalate) CAS NO 26062-94-2 is a high-performance, semi-crystalline engineering thermoplastic belonging to the polyester family, renowned for its excellent dimensional stability, low moisture absorption, and superior electrical insulating properties. This material is critical for manufacturers who require a robust polymer with good chemical resistance and a high heat deflection temperature for demanding applications. It is an essential raw material for industries including automotive, electrical & electronics, and industrial equipment manufacturing, where precision, durability, and reliability are paramount.

Application

• Automotive Components: Used in under-the-hood parts, connectors, sensor housings, and door handles due to its heat resistance and strength.
• Electrical & Electronics: Ideal for circuit breakers, switchgear, motor brush holders, and connector housings because of its excellent dielectric properties and flame retardancy (in modified grades).
• Consumer Appliances: Employed in the housings and functional components of power tools, vacuum cleaners, and kitchen appliances for its toughness and gloss.
• Industrial Equipment: Used for pump housings, gear wheels, and conveyor system components, leveraging its wear resistance and low friction.
• Optical Fiber Cable: Serves as a secondary coating material to provide mechanical protection and signal stability.
• Medical Devices: Utilized in reusable surgical instrument housings and dental device components where sterilizability and chemical resistance are required.

Basic Information

Product Name	Poly(Butylene Terephthalate)
CAS No.	26062-94-2
Molecular Formula	(C12H12O4)n
Molecular Weight	220.23 (monomer)
Synonyms	Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl); PBT; Poly(tetramethylene terephthalate); PTMT; Polibutilen tereftalato; 2,5-Furandione, polymer with 1,4-butanediol and 1,4-benzenedicarboxylic acid; Butylene terephthalate polymer; Poly(1,4-butylene terephthalate)
EINECS	247-372-2

Quality Control

Our Poly(Butylene Terephthalate) is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters such as intrinsic viscosity, melting point, and thermal stability to ensure consistency and performance. Certificates of Analysis (COA) detailing lot-specific results are available upon request. We can supply grades compliant with various international standards, including those for electrical and automotive applications.

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 acids, strong bases, and excessive heat sources to maintain polymer integrity. Although PBT has low moisture absorption, prolonged exposure to high humidity should be avoided to prevent any potential processing issues.

Specification

Item	Specification
Appearance	White or off-white pellets
Melting Point (DSC)	220 - 230 °C
Density	1.30 - 1.32 g/cm³
Tensile Strength	50 - 60 MPa
Flexural Modulus	2500 - 3000 MPa
Notched Izod Impact Strength	40 - 60 J/m
Heat Deflection Temperature (1.8 MPa)	180 - 210 °C
Moisture Content	< 0.1 %

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