Description

1,2-Benzenedicarboxylic acid, polymer with 1,3-diisocyanato-5-methylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-[(1-methylethylidene) bis(4,1-phenyleneoxy)]bis[2-propanol] is a high-performance, branched polyurethane prepolymer or resin intermediate. This specialty polymer is engineered to deliver exceptional durability, chemical resistance, and tailored mechanical properties in demanding industrial applications. It is a critical raw material for formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product performance.

Application

• High-Performance Industrial Coatings: Used as a resin component in protective coatings for metal, concrete, and plastic substrates, offering excellent weatherability, abrasion resistance, and chemical protection.
• Advanced Adhesives and Sealants: Serves as a key polyol component in formulating structural adhesives, potting compounds, and flexible sealants with strong bonding strength and environmental stability.
• Specialty Elastomers and Urethane Castings: Employed in the production of polyurethane elastomers for rollers, gaskets, and industrial parts requiring a balance of toughness and elasticity.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced plastics (FRP) and other composite systems to improve interfacial adhesion and mechanical properties.
• Electrical Encapsulation: Suitable for potting and encapsulation applications in electronics, providing insulation, moisture resistance, and protection from thermal and mechanical stress.

Basic Information

Product Name	1,2-Benzenedicarboxylic acid, polymer with 1,3-diisocyanato-5-methylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-[(1-methylethylidene) bis(4,1-phenyleneoxy)]bis[2-propanol]
CAS No.	125378-86-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Phthalic acid, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,3-diisocyanato-5-methylbenzene and α,α'-[isopropylidenebis(p-phenyleneoxy)]di-2-propanol; Polyurethane polyol resin based on TMI® (meta-unsaturated aliphatic isocyanate); Branched aromatic polyurethane prepolymer; TMI-based polyurethane resin; CAS 125378-86-1 polymer.
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. Key parameters such as hydroxyl value (OHV), viscosity, isocyanate content (NCO%), and color are rigorously monitored. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment 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 (typically 15-25°C). This product is moisture-sensitive (hygroscopic); ensure containers are sealed after use to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from heat sources and open flame.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 3
Hydroxyl Value (OHV)	Contact for details
Viscosity @ 25°C	Contact for details
Acid Value	≤ 2.0 mg KOH/g
Moisture Content (Karl Fischer)	≤ 0.1%
Identification (IR)	Conforms

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