Description

Poly(1,4-Butylene Terephthalate) CAS NO 30965-26-5 is a high-performance, semi-crystalline thermoplastic polyester known for its excellent dimensional stability, low moisture absorption, and good electrical insulating properties. This material is engineered to deliver a superior balance of mechanical strength, chemical resistance, and processability for demanding applications. It is a critical engineering polymer for manufacturers in the automotive, electrical, and consumer goods industries seeking durable and reliable components.

Application

• Automotive Components: Used in under-the-hood parts, connectors, sensor housings, and door handles due to its heat resistance and strength.
• Electrical & Electronics (E&E): Ideal for circuit breakers, switches, motor components, and bobbins where good dielectric properties and flame retardancy are required.
• Consumer Appliances: Employed in the housings and functional parts of power tools, kitchen appliances, and personal care devices.
• Industrial Engineering: Suitable for gears, bearings, pump housings, and other mechanical parts requiring low friction and wear resistance.
• Optical Applications: Used in components for eyewear, lenses, and light guides where clarity and surface finish are important.

Basic Information

Product Name	Poly(1,4-Butylene Terephthalate)
CAS No.	30965-26-5
Molecular Formula	(C12H12O4)n
Molecular Weight	220.22 (monomer unit)
Synonyms	Polybutylene Terephthalate; PBT; Poly(tetramethylene terephthalate); PTMT; 2,5-Furandione, polymer with 1,4-butanediol; Arnite T; Celanex; Crastin; Ultradur; Valox
EINECS	250-375-1

Quality Control

Our Poly(1,4-Butylene Terephthalate) is manufactured under a strict quality management system. Each batch is tested against key parameters including intrinsic viscosity, melting point, and thermal stability to ensure consistent performance. Certificates of Analysis (COA) detailing lot-specific results 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 acids, bases, and oxidizing agents. As a thermoplastic polymer, it should be stored away from high heat sources to prevent clumping or degradation.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Melting Point (DSC)	220 - 230 °C
Density	1.30 - 1.32 g/cm³
Intrinsic Viscosity (IV)	0.6 - 1.4 dL/g (Grade dependent)
Tensile Strength	> 50 MPa
Flexural Modulus	> 2500 MPa
Moisture Content	< 0.5 %
Ash Content	< 0.1 %

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