Description

Poly[4,4'-Methylenebis(Phenyl Isocyanate)-Alt-1,4-Butanediol/ Polytetrahydrofuran] is a segmented polyurethane thermoplastic elastomer (TPU) synthesized from MDI, butanediol, and PTMEG. This material matters for its exceptional combination of high tensile strength, elasticity, and abrasion resistance, making it a superior alternative to conventional rubbers and plastics. Industries requiring durable, flexible components, such as automotive, industrial machinery, and high-performance consumer goods, rely on this polymer for critical applications.

Application

• Automotive Components: Used in CVJ boots, airbag covers, and interior trim for its durability and flexibility.
• Industrial Belts & Hoses: Ideal for high-flex, high-wear conveyor belts, hydraulic hoses, and pneumatic tubing.
• Medical Device Tubing: Employed for its biocompatibility, kink resistance, and clarity in peristaltic pump and catheter tubing.
• Wire & Cable Jacketing: Provides excellent insulation, oil resistance, and mechanical protection for industrial cables.
• Sporting Goods: Used in high-performance shoe soles, ski boots, and protective gear for its shock absorption and wear properties.
• Industrial Rollers & Wheels: Manufactured into casters, printing rollers, and paper handling components for quiet operation and long service life.
• Film & Sheet Extrusion: Processed into breathable waterproof membranes and protective films for technical textiles.

Basic Information

Product Name	Poly[4,4'-Methylenebis(Phenyl Isocyanate)-Alt-1,4-Butanediol/ Polytetrahydrofuran]
CAS No.	9018-04-6
Molecular Formula	(C15H10N2O2.C4H10O2.C4H8O)n
Molecular Weight	Varies by grade (Typically 50,000 - 200,000 g/mol)
Synonyms	MDI/BDO/PTMEG Copolymer; Thermoplastic Polyurethane Elastomer (TPU); Polyurethane, MDI-PTMEG type; Poly(tetramethylene ether glycol)-co-4,4'-methylenebis(phenyl isocyanate)-co-1,4-butanediol; PTMEG/MDI/BDO Terpolymer; 4,4'-Methylenebis(phenyl isocyanate) polymer with polytetrahydrofuran and 1,4-butanediol; Estane (common trade name series); TPU, polyester/polyether type.
EINECS	Contact for details

Quality Control

Our Poly[4,4'-Methylenebis(Phenyl Isocyanate)-Alt-1,4-Butanediol/ Polytetrahydrofuran] is manufactured under strict quality management systems. Each batch undergoes rigorous testing for key parameters including molecular weight distribution, hardness, tensile properties, and hydrolytic stability to ensure compliance with industry and customer-specific standards. Certificates of Analysis (COA) detailing all specifications are available upon request.

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 material is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis and property degradation. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Pellets or granules, colorless to pale yellow
Identification (IR)	Conforms to structure
Hardness (Shore A/D)	70A - 55D (Grade dependent)
Tensile Strength	25 - 50 MPa
Elongation at Break	400 - 700 %
Melting Point (DSC)	160 - 210 °C
Moisture Content (KF)	< 0.05 %
Solution Viscosity	Grade dependent

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