Description

1,2,3-Propanetriol, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene], Methyloxirane And Oxirane is a specialized polyurethane-polyether hybrid polymer, identified by CAS No. 42402-37-9. This advanced material is engineered to deliver a unique balance of flexibility, chemical resistance, and adhesion properties, making it a critical component in high-performance formulations. It is primarily sought after by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries for developing durable and resilient end-products.

Application

• High-Performance Coatings: Used as a key resin or modifier in industrial, protective, and marine coatings to enhance flexibility, chemical resistance, and weatherability.
• Adhesives & Sealants: Serves as a base polymer for formulating structural adhesives, flexible sealants, and bonding agents with excellent substrate adhesion.
• Elastomers and Castable Urethanes: A vital component in the production of polyurethane elastomers, offering tailored hardness, tensile strength, and impact resistance.
• Composite Materials: Utilized as a matrix or binder in fiber-reinforced composites for automotive and aerospace applications.
• Industrial Potting & Encapsulation: Provides protective encapsulation for electronic components due to its potential insulating and shock-absorbing properties.
• Textile & Leather Finishes: Imparts durable, flexible, and water-resistant finishes to technical textiles and synthetic leather.

Basic Information

Product Name	1,2,3-Propanetriol, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene], Methyloxirane And Oxirane
CAS No.	42402-37-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane-polyether hybrid resin; Glycerol started polyurethane polyol; MDI-based polyurethane prepolymer; Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 2,2'-methylenebis[phenyl isocyanate] and glycerol; Polyether urethane polyol; Polyurethane polyol resin; Adhesive resin 42402-37-9; CAS 42402-37-9
EINECS	Contact for details

Quality Control

Our production of this polymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for critical parameters including hydroxyl value, isocyanate content, viscosity, and moisture levels. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

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 when not in use to prevent moisture absorption and contamination. Store away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cPs)	Contact for details
Isocyanate Content (NCO %)	Contact for details
Moisture Content (Karl Fischer)	≤ 0.05%
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.