Description

Poly(1,4-Butylene Terephthalate) CAS NO 24968-12-5 is a high-performance engineering thermoplastic polyester known for its excellent dimensional stability, low moisture absorption, and good electrical insulating properties. This material is critical for manufacturers requiring durable components that maintain their properties in challenging environments. It is primarily needed by the automotive, electrical/electronics, and industrial manufacturing sectors for precision parts.

Application

• Automotive Components: Used in under-the-hood parts, sensor housings, and connectors due to its heat resistance and dimensional stability.
• Electrical & Electronics: Ideal for bobbins, relays, switches, and circuit breaker components requiring good dielectric strength and creep resistance.
• Industrial Engineering: Manufactured into gears, bearings, rollers, and pump housings where low friction and wear resistance are key.
• Consumer Appliances: Employed in housings and functional parts for power tools, kitchen appliances, and personal care devices.
• Optical Fiber Secondary Coating: Serves as a protective buffer layer due to its flexibility and mechanical protection.
• Polymer Blends & Alloys: Used as a key component in polymer blends (e.g., with PC or PET) to enhance specific performance characteristics.

Basic Information

Product Name	Poly(1,4-Butylene Terephthalate)
CAS No.	24968-12-5
Molecular Formula	(C12H12O4)n
Molecular Weight	220.22 (monomer unit)
Synonyms	Poly(butylene terephthalate); PBT; Poly(tetramethylene terephthalate); PTMT; 2,5-Furandione, polymer with 1,4-butanediol; Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl); Polibutilen tereftalato; PBTP; Arnite T; Celanex; Crastin; Ultradur; Valox
EINECS	246-546-1

Quality Control

Our Poly(1,4-Butylene Terephthalate) is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for intrinsic viscosity, melting point, and thermal stability. Certificates of Analysis (COA) detailing these parameters are available upon request to support your quality assurance protocols.

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 to prevent degradation of polymer properties. The material is hygroscopic (moisture-sensitive) and should be kept dry prior to processing.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Intrinsic Viscosity (IV)	0.6 - 1.4 dL/g (Grade Dependent)
Melting Point (DSC)	220 - 230 °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.