Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Methyl-1,2-Ethanediyl) And 1,1-Methylenebisisocyanatobenzene CAS NO 153965-56-1 is a specialized polyurethane prepolymer or polyol derivative, synthesized from trimethylolpropane (TMP), poly(ethylene glycol), and methylene diphenyl diisocyanate (MDI). This engineered polymer is valued for its ability to impart flexibility, toughness, and enhanced adhesion properties in high-performance formulations. It is primarily utilized by industrial manufacturers in sectors such as coatings, adhesives, sealants, and elastomers (CASE), where tailored polymer performance is critical.

Application

• High-Performance Coatings: Used as a reactive component in polyurethane coatings for industrial, automotive, and protective applications, improving flexibility and chemical resistance.
• Adhesives & Sealants: Serves as a key polyol in formulating structural and elastic adhesives, enhancing bond strength and durability.
• Elastomers: Incorporated into castable and thermoplastic polyurethane elastomers for gaskets, wheels, and industrial parts requiring a balance of hardness and resilience.
• Resin Modification: Acts as a flexibilizer or crosslinking agent in epoxy and other thermoset resin systems to reduce brittleness.
• Composite Materials: Utilized in polymer matrices for fiber-reinforced composites to improve impact resistance and interfacial adhesion.
• Specialty Binders: Employed in the formulation of binders for non-woven fabrics, filters, and abrasive products.

Basic Information

Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Methyl-1,2-Ethanediyl) And 1,1-Methylenebisisocyanatobenzene
CAS No.	153965-56-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Trimethylolpropane ethoxylate triol, MDI-terminated; Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-methylenebis[4-isocyanatobenzene]; Polyurethane prepolymer based on TMP, PEG, and MDI; PEG-TMP-MDI adduct; Hydroxyl-terminated polyurethane prepolymer; MDI-capped poly(ethylene glycol) trimethylolpropane ether; Reactive polyol modifier; CAS 153965-56-1
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Each batch is characterized for critical parameters including hydroxyl value, isocyanate content, viscosity, and moisture to ensure consistent performance in downstream formulations. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We support compliance with relevant global regulatory frameworks for industrial chemicals.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Isolate from strong oxidizers, acids, and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Isocyanate Content (NCO %, wt)	Contact for details
Viscosity (at 25°C)	Contact for details
Moisture (Karl Fischer)	< 0.1%
Specific Gravity (25°C)	Contact for details

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