Description

1,4-Benzenedicarboxylic Acid, Dimethyl Ester, Polymer With 1,4-Butanediol, Methyloxirane And Oxirane CAS NO 64811-37-6 is a high-performance thermoplastic polyester-polyether copolymer, commonly known as a modified polybutylene terephthalate (PBT) block copolymer. This engineered polymer is valued for its exceptional balance of mechanical strength, flexibility, and chemical resistance, making it a superior alternative to standard polyesters. It is primarily utilized in the manufacturing of durable components for the automotive, electronics, and industrial equipment sectors, where material reliability under stress is critical.

Application

• Automotive Components: Used in the production of under-the-hood parts, connectors, and sensor housings due to its heat and chemical resistance.
• Electrical & Electronics: Ideal for circuit breakers, switchgear components, and durable connectors requiring excellent dielectric properties and dimensional stability.
• Industrial Engineering Plastics: Serves as a key material for gears, bearings, and pump housings that demand high wear resistance and low moisture absorption.
• Consumer Appliances: Employed in the manufacture of robust housings and functional parts for power tools and household appliances.
• Specialty Films & Fibers: Used to create high-tenacity fibers and protective films for technical textiles and packaging applications.
• Polymer Modification: Acts as a compatibilizer or toughening agent in polymer blends to enhance impact strength and processing characteristics.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Dimethyl Ester, Polymer With 1,4-Butanediol, Methyloxirane And Oxirane
CAS No.	64811-37-6
Molecular Formula	(C10H10O4·C4H10O2·C3H6O·C2H4O)x
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl); Poly(tetramethylene terephthalate)-block-poly(ethylene glycol)-block-poly(propylene glycol); PBT-PEG-PPG Block Copolymer; Poly(butylene terephthalate)-poly(alkylene glycol) Copolymer; Thermoplastic Polyester Elastomer (TPEE); Modified Polybutylene Terephthalate; Copolyester Ether; Terephthalic Acid, Dimethyl Ester, Polymer with 1,4-Butanediol, Propylene Oxide and Ethylene Oxide
EINECS	Contact for details

Quality Control

Our production of this advanced copolymer adheres to stringent quality management systems, ensuring batch-to-batch consistency for critical industrial applications. Quality is verified through comprehensive testing of intrinsic viscosity, melt flow index, thermal properties (DSC), and mechanical performance. Certificates of Analysis (COA) detailing all relevant specifications are provided with each shipment to guarantee compliance with your technical requirements.

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). This polymer is hygroscopic (moisture-sensitive); keep the original packaging sealed until use to prevent moisture absorption, which can affect processing and final properties.

Specification

Item	Specification
Appearance	White to off-white pellets or granules
Intrinsic Viscosity (IV)	0.8 - 1.2 dL/g (Typical)
Melting Point (DSC)	180 - 220 °C
Moisture Content	< 0.1 %
Glass Transition Temperature (Tg)	-50 to -30 °C
Tensile Strength	> 25 MPa
Elongation at Break	> 300 %

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