Description

1,3-Butanediol, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol, 1,1'-Methylenebis[4-Isocyanatobenzene] And 2,2'-Oxybis[Ethanol] CAS NO 105431-82-1 is a specialized polyurethane prepolymer or resin intermediate, synthesized from a precise combination of diols and diisocyanates. This compound is engineered to deliver controlled reactivity and tailored physical properties, making it a critical raw material for formulating high-performance coatings, adhesives, and elastomers. It is essential for manufacturers in the automotive, industrial coatings, and specialty polymer sectors seeking to enhance product durability and performance.

Application

• High-Performance Polyurethane Coatings: Used as a key resin component in two-component (2K) polyurethane coatings for automotive clear coats, industrial machinery, and aerospace applications, providing excellent gloss, chemical resistance, and weatherability.
• Specialty Adhesives and Sealants: Serves as a prepolymer in formulating structural adhesives, flexible sealants, and potting compounds, offering strong bonding and elasticity.
• Elastomer Production: Acts as a building block for casting, molding, or extruding polyurethane elastomers used in wheels, rollers, and impact-absorbing components.
• UV-Curable Resin Systems: Can be functionalized for use in ultraviolet (UV) light-curable ink, coating, and 3D printing resin formulations, enabling rapid curing and high precision.
• Composite Materials: Utilized as a matrix resin or modifier in fiber-reinforced plastics (FRP) and other composite materials to improve interfacial adhesion and mechanical strength.
• Industrial Maintenance Coatings: Formulated into protective coatings for floors, tanks, pipelines, and marine structures that require robust protection against corrosion and abrasion.

Basic Information

Product Name	1,3-Butanediol, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol, 1,1'-Methylenebis[4-Isocyanatobenzene] And 2,2'-Oxybis[Ethanol]
CAS No.	105431-82-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane prepolymer based on 1,3-butanediol, TMP, MDI, and diethylene glycol; Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-butanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-methylenebis[4-isocyanatobenzene]; MDI/TMP/1,3-Butanediol/Diethylene Glycol Copolymer; 4,4'-MDI copolymer with TMP, 1,3-butanediol, and diethylene glycol; Polyurethane resin intermediate; Thermosetting polyurethane resin; PU prepolymer
EINECS	Contact for details

Quality Control

Our production of this polyurethane intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency for downstream formulation. Key parameters such as NCO content, viscosity, and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance indicators is provided with every 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 room temperature (15-25°C / 59-77°F). This product is hygroscopic (moisture-sensitive) and must be protected from atmospheric moisture to prevent premature reaction and viscosity increase. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Complies
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Color (Gardner)	≤ 2
Specific Gravity (25°C)	Contact for details
Moisture (Karl Fischer)	≤ 0.05%

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