Description

Phenol, 4,4'-(1-Methylethylidene)Bis-, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And Methyloxirane is a high-performance, cross-linked polymer resin synthesized from bisphenol A, methylene diphenyl diisocyanate (MDI), and propylene oxide. This specialized material matters for its exceptional combination of chemical resistance, thermal stability, and robust mechanical properties, making it ideal for demanding industrial applications. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced composite materials and electronic encapsulants.

Application

• High-Performance Industrial Coatings: Used as a binder in protective coatings for pipelines, chemical tanks, and marine environments due to its excellent corrosion and solvent resistance.
• Structural Adhesives and Sealants: Serves as a key component in formulations requiring strong, durable bonds with good flexibility and environmental stability.
• Composite Matrix Resins: Acts as a polymer matrix in fiber-reinforced composites for automotive, aerospace, and construction applications.
• Electrical Encapsulation and Potting: Provides insulation and protection for sensitive electronic components from moisture, vibration, and thermal cycling.
• Elastomer Production: Utilized in the synthesis of polyurethane and polyurea elastomers with enhanced toughness and weatherability.
• Specialty Molding Compounds: Formulated into engineering plastics and molding compounds for parts requiring high dimensional stability and chemical inertness.

Basic Information

Product Name	Phenol, 4,4'-(1-Methylethylidene)Bis-, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And Methyloxirane
CAS No.	31227-09-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bisphenol A-MDI-Propylene Oxide Polymer; BPA-MDI-PO Polymer; Poly(bisphenol A-co-MDI-co-propylene oxide); MDI-modified Bisphenol A Propoxylate; Epoxy-terminated Polyurethane Pre-polymer; Thermoset Poly(urethane-ether) Resin; Bisphenol A Propoxylate/MDI Adduct; Isocyanate-terminated Polyether Polyol Adduct
EINECS	Contact for details

Quality Control

Our Phenol, 4,4'-(1-Methylethylidene)Bis-, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And Methyloxirane is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of key parameters such as isocyanate (NCO) content, hydroxyl value, viscosity, and residual monomer levels. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive) and must be kept under a dry, inert atmosphere (e.g., nitrogen blanket) after opening to prevent moisture absorption and premature polymerization. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid to solid mass
Color	Pale yellow to amber
Isocyanate (NCO) Content	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	Contact for details
Residual Monomer (MDI)	< 0.5%
Moisture Content	< 0.1%

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