Description

Poly(Oxy-1,2-Ethanediyl), .Alpha.-Methyl-.Omega.-Hydroxy-, Polymer With 1,6-Diisocyanatohexane, Block is a specialized polyurethane-polyether block copolymer, a high-performance material engineered for demanding industrial applications. Its unique segmented structure provides an exceptional balance of flexibility, toughness, and chemical resistance, making it a critical component in advanced formulations. This polymer is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product durability and performance.

Application

• High-Performance Coatings: Used as a key resin in industrial, automotive, and marine coatings to improve flexibility, abrasion resistance, and weatherability.
• Advanced Adhesives & Sealants: Serves as a base polymer for structural adhesives, potting compounds, and flexible sealants requiring strong bonding and elasticity.
• Thermoplastic Polyurethane (TPU) Elastomers: Acts as a crucial building block in the synthesis of TPUs for applications like cable jacketing, hoses, gaskets, and wearable device components.
• Fiber & Textile Finishing: Employed in coatings and treatments for synthetic fibers and technical textiles to impart water resistance, durability, and a soft hand feel.
• Composite Materials: Functions as a toughening agent or matrix component in polymer composites to enhance impact strength and interfacial adhesion.
• Specialty Resins for 3D Printing: Utilized in formulating advanced photopolymer resins for additive manufacturing, offering improved mechanical properties in printed parts.

Basic Information

Product Name	Poly(Oxy-1,2-Ethanediyl), .Alpha.-Methyl-.Omega.-Hydroxy-, Polymer With 1,6-Diisocyanatohexane, Block
CAS No.	143472-08-6
Molecular Formula	(C2nH4n+2On+1) · (C8H12N2O2)m (Block copolymer structure)
Molecular Weight	Variable (Depends on block length and ratio)
Synonyms	Poly(propylene glycol)-block-polyurethane; PPG-based polyurethane prepolymer; α-Methyl-ω-hydroxy-poly(oxyethylene)-block-poly(hexamethylene urethane); Polyether urethane block copolymer; Polyoxypropylene polyurethane; MDI/PPG copolymer (when derived from methylene diphenyl diisocyanate variants); HDI-PPG prepolymer (referring to hexamethylene diisocyanate component); Telechelic polyether polyurethane
EINECS	Contact for details

Quality Control

Our production of this block copolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as hydroxyl value (OH#), isocyanate (NCO) content, viscosity, and molecular weight distribution are rigorously monitored using advanced analytical techniques including GPC and titration. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a recommended temperature of 15-25°C. This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from heat sources and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Complies
Hydroxyl Value (OH#)	As per grade (e.g., 28 - 56 mg KOH/g)
Isocyanate (NCO) Content	< 0.5 % (for stabilized grades) or as per grade
Viscosity @ 25°C	Grade-dependent (e.g., 500 - 5000 mPa·s)
Moisture Content (KF)	< 0.05 %
Specific Gravity @ 25°C	~1.05 - 1.10

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