Description

1,2-Benzenedicarboxylic acid, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-[(1-methylethylidene) bis(4,1-phenyleneoxy)]bis[2-propanol] and 2,2'-oxybis[ethanol] is a high-performance, multi-component polyurethane prepolymer or resin intermediate. This specialized polymer is engineered to deliver exceptional durability, chemical resistance, and tailored reactivity for advanced coating and adhesive formulations. It is a critical raw material for industries requiring high-performance protective finishes, flexible yet tough elastomers, and reliable structural adhesives.

Application

• High-Performance Industrial Coatings: Formulating durable topcoats for automotive, aerospace, and heavy machinery that require superior weatherability and chemical resistance.
• Specialty Adhesives & Sealants: Serving as a key component in polyurethane-based adhesives for construction, automotive assembly, and composite bonding.
• Elastomer Production: Used in the synthesis of castable polyurethane elastomers for industrial rollers, gaskets, and impact-absorbing components.
• Electrical Potting & Encapsulation: Providing protective, insulating resins for electronic components due to its potential for good dielectric properties and adhesion.
• Composite Materials: Acting as a matrix resin or binder in fiber-reinforced plastics (FRP) and other composite structures.
• Flexible & Rigid Foams: As a modified polyol component in the formulation of specialized polyurethane foam systems.

Basic Information

Item	Details
Product Name	1,2-Benzenedicarboxylic acid, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-[(1-methylethylidene) bis(4,1-phenyleneoxy)]bis[2-propanol] and 2,2'-oxybis[ethanol]
CAS No.	123701-50-8
Molecular Formula	Polymeric substance; contact for details
Molecular Weight	Polymeric substance; contact for details
Synonyms	Phthalic acid polymer with TMXDI, TMP, Bisphenol A ethoxylate, and diethylene glycol; Polyurethane prepolymer based on phthalic anhydride; Modified aromatic polyurethane resin; Polyester-polyether-urethane copolymer; Isocyanate-terminated prepolymer; CAS 123701-50-8; Aromatic polyurethane polyol
EINECS	Contact for details

Quality Control

Our production of this polymer adheres to strict batch-to-batch consistency protocols. Quality is monitored through key parameters including isocyanate (NCO) content, hydroxyl value, viscosity, and color. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing specifications relevant to its application. We operate under a ISO 9001 quality management system to ensure reliability for your formulations.

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). Keep the container tightly sealed to prevent moisture absorption (hygroscopic) and contamination. Store away from heat, sparks, and open flame. Keep away from strong bases, acids, and oxidizing agents.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 4
Viscosity (at 25°C)	Specification available upon request
Hydroxyl Value (mg KOH/g)	Specification available upon request
Isocyanate (NCO) Content (%)	Specification available upon request
Solid Content (%)	Specification available upon request
Acid Value (mg KOH/g)	≤ 2.0
Water Content (Karl Fischer)	≤ 0.1%

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