Description

1,4-Butanediol, Polymer With 1,6-Diisocyanatohexane And .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl), Block is a specialized thermoplastic polyurethane (TPU) elastomer block copolymer. This engineered polymer is valued for its exceptional combination of elasticity, abrasion resistance, and mechanical strength, making it a critical performance material. It is primarily sought by manufacturers in the automotive, industrial machinery, footwear, and wire & cable sectors for producing high-durability components.

Application

• Automotive Parts: Used in the production of seals, gaskets, hoses, and interior components requiring oil and abrasion resistance.
• Industrial Belts and Rollers: Serves as a key material for manufacturing durable conveyor belts, drive belts, and industrial rollers.
• Footwear: Employed in the soles and midsoles of high-performance athletic and safety footwear for superior cushioning and wear life.
• Wire & Cable Jacketing: Provides excellent insulation, flexibility, and environmental stress crack resistance for protective cable sheathing.
• Technical Molding: Utilized for injection molding and extrusion of complex technical parts requiring a balance of toughness and flexibility.
• Adhesives and Sealants: Acts as a base polymer in formulating high-strength, flexible polyurethane adhesives and sealants.

Basic Information

Item	Details
Product Name	1,4-Butanediol, Polymer With 1,6-Diisocyanatohexane And .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl), Block
CAS No.	52738-49-5
Molecular Formula	(C4H10O2·C8H12N2O2·(C4H8O)n)x
Molecular Weight	Varies by grade (Polymer)
Synonyms	Poly(butylene adipate-co-terephthalate) glycol terminated polyurethane; TPU based on Poly(tetramethylene ether) glycol (PTMEG), 1,6-Hexamethylene Diisocyanate (HDI), and 1,4-Butanediol (BDO); Thermoplastic Polyurethane Elastomer (TPU); PTMEG-HDI-BDO Block Copolymer; Aliphatic Polyurethane; Polyurethane, block, from PTMEG, HDI and BDO; 4,4'-Methylenebis(cyclohexyl isocyanate) polymer with polytetramethylene ether glycol and 1,4-butanediol (related); Estane (trade name example).
EINECS	Contact for details

Quality Control

Our thermoplastic polyurethane products are manufactured under a stringent quality management system. Each batch is tested against critical parameters including hardness (Shore A/D), tensile strength, elongation at break, and melt flow index to ensure consistent performance for your applications. Comprehensive Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the original packaging sealed until use to prevent moisture absorption, which can affect processing and final product properties.

Specification

Item	Specification
Appearance	Colorless to pale yellow pellets or granules
Identification (IR)	Conforms to structure
Hardness (Shore)	70A - 55D (Grade dependent)
Tensile Strength	20 - 50 MPa
Elongation at Break	300 - 700 %
Melt Flow Rate (MFR)	5 - 30 g/10 min (190°C/2.16 kg)
Moisture Content	< 0.05 %
Specific Gravity	1.10 - 1.20

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