Description

Poly(Oxy-1,4-Butanediyl), α-Hydro-ω-Hydroxy-, Polymer With 4,4'-Diisocyanato-3,3'-Dimethyl-1,1'-Biphenyl CAS NO 60677-02-3 is a high-performance thermoplastic polyurethane (TPU) elastomer derived from polytetramethylene ether glycol (PTMEG) and 3,3'-dimethyl-4,4'-diphenylmethane diisocyanate (MDI). This specialized polymer is valued for its exceptional balance of mechanical strength, hydrolytic stability, and low-temperature flexibility. It is essential for manufacturers requiring durable, reliable elastomeric materials that perform under demanding conditions. Key industries include medical device manufacturing, automotive components, and high-performance industrial goods.

Application

• Medical Tubing and Catheters: Utilized for its biocompatibility, flexibility, and resistance to kinking and sterilization processes.
• Automotive Seals and Gaskets: Provides excellent compression set resistance and durability against fuels, oils, and varying temperatures.
• Industrial Hoses and Belts: Chosen for its high tensile strength, abrasion resistance, and long service life in dynamic applications.
• Wire and Cable Jacketing: Offers superior insulation properties, flame retardancy (when compounded), and environmental stress crack resistance.
• Consumer Electronics Components: Used in protective cases, seals, and flexible parts due to its good tactile feel and durability.
• Extruded Profiles and Films: Serves as a material for creating flexible, transparent, or colored sheets and custom profiles.

Basic Information

Product Name	Poly(Oxy-1,4-Butanediyl), α-Hydro-ω-Hydroxy-, Polymer With 4,4'-Diisocyanato-3,3'-Dimethyl-1,1'-Biphenyl
CAS No.	60677-02-3
Molecular Formula	(C5H10O2)n·(C17H16N2O2)m (Polymer)
Molecular Weight	Varies by grade (Typical Mn: 30,000 - 200,000 g/mol)
Synonyms	Poly(tetramethylene ether glycol)-co-3,3'-dimethyl-4,4'-diphenylmethane diisocyanate; PTMEG-MDI TPU; Thermoplastic Polyurethane Elastomer (based on PTMEG/MDI); Poly(tetrahydrofuran)-MDI copolymer; Aliphatic Polyether-based TPU; 3,3'-Dimethyl-MDI/PTMG Polyurethane; TPU, polyether type; Polyether thermoplastic polyurethane
EINECS	Contact for details

Quality Control

Our thermoplastic polyurethane is manufactured under a strict quality management system. Each batch undergoes comprehensive testing to ensure it meets precise specifications for molecular weight, hardness, tensile properties, and hydrolytic stability. Certificates of Analysis (COA) detailing key parameters are provided with every shipment. We support compliance with relevant regulatory frameworks, including REACH, FDA (for indirect food contact and medical applications where applicable), and ISO 10993 biocompatibility testing for medical grades.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a temperature between 15°C and 25°C (59°F and 77°F). Keep away from strong heat sources, open flames, and incompatible materials such as strong acids, bases, and oxidizing agents. This material is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption, which can affect processing and final properties.

Specification

Item	Specification
Appearance	Pellets or granules, Colorless to pale yellow
Hardness (Shore A)	70A - 95A (Grade dependent)
Tensile Strength	25 - 50 MPa
Elongation at Break	300 - 700 %
Melting Point (DSC)	150 - 200 °C
Moisture Content	< 0.05 %
Specific Gravity	1.10 - 1.20
Melt Flow Index (MFI)	5 - 30 g/10 min (190°C/2.16 kg)

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