Description

1,4-Benzenedicarboxylic Acid, Polymer With 1,4-Butanediol And Hexanedioic Acid is a high-performance thermoplastic copolyester elastomer (TPC-ET), commonly known as a poly(butylene terephthalate)-co-poly(tetramethylene glycol) or PBT-based copolyester. This engineered polymer offers a unique balance of flexibility, chemical resistance, and mechanical strength, making it a superior alternative to traditional thermoset rubbers and other thermoplastics. It is essential for manufacturers seeking durable, reliable materials for demanding applications across the automotive, industrial, and consumer goods sectors.

Application

• Automotive Components: Used in airbag covers, constant velocity joint boots, seals, gaskets, and tubing due to its excellent fatigue resistance and performance across a wide temperature range.
• Industrial Hose & Tubing: Ideal for hydraulic and pneumatic hoses, fuel lines, and industrial tubing requiring flexibility, pressure resistance, and compatibility with oils and chemicals.
• Consumer Goods & Sporting Equipment: Employed in the production of high-durability watch straps, phone cases, ski boots, and other molded goods needing a soft-touch feel and resilience.
• Electrical & Electronics: Suitable for cable jacketing, connectors, and protective components where flame retardancy (when compounded) and good dielectric properties are required.
• Medical Device Components: Used in non-implantable medical parts such as tubing and connectors, benefiting from its sterilizability and consistent performance.
• Industrial Belts & Seals: Fabricated into timing belts, conveyor belts, and various dynamic seals that demand high tensile strength, abrasion resistance, and dimensional stability.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Polymer With 1,4-Butanediol And Hexanedioic Acid
CAS No.	60961-73-1
Molecular Formula	(C12H12O4.C4H10O2.C6H10O4)x
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(butylene terephthalate)-block-poly(tetramethylene oxide); PBT-PTMG Copolymer; Thermoplastic Copolyester Elastomer (TPC-ET); Poly(tetramethylene ether glycol)-b-poly(butylene terephthalate); PTMG-b-PBT; Copolyester ether elastomer; Hytrel®-type polymer (generic); Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl-co-oxy-1,4-butanediyloxycarbonyl-1,5-pentanediylcarbonyl)
EINECS	Contact for details

Quality Control

Our thermoplastic copolyester elastomer is produced under a strict quality management system. Each batch undergoes comprehensive testing for key parameters including intrinsic viscosity, melt flow index, hardness (Shore D), and thermal properties (melting point, glass transition temperature) to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing the full specification results are provided with every shipment.

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 oxidizing agents and excessive heat sources to maintain polymer integrity. This material is hygroscopic (moisture-sensitive); keep original packaging sealed until use to prevent moisture absorption which can affect processing.

Specification

Item	Specification
Appearance	Pellets or granules, Colorless to off-white
Identification (IR)	Conforms to structure
Shore Hardness (Typical)	40D - 72D (Grade dependent)
Melting Point (DSC)	150°C - 210°C (Grade dependent)
Tensile Strength	> 20 MPa
Elongation at Break	> 300%
Moisture Content (KF)	< 0.1 %

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