Description

1,3-Benzenedicarboxylic acid, polymer with 1,3-diisocyanatomethylbenzene, 2,2-dimethyl-1,3-propanediol, 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 specialized 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 & Sealants: Serves as a key polyol/isocyanate component in formulating structural adhesives, potting compounds, and flexible sealants with strong bonding strength and environmental stability.
• Specialty Elastomers and Castables: Employed in the production of polyurethane elastomers for industrial rollers, gaskets, and wear 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 encapsulating electronic components due to its potential for good dielectric properties and moisture resistance.
• Automotive and Aerospace Components: Used in under-the-hood components, interior trim adhesives, and composite parts where thermal stability and vibration damping are crucial.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 1,3-diisocyanatomethylbenzene, 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-[(1-methylethylidene) bis(4,1-phenyleneoxy)]bis[2-propanol]
CAS No.	118496-39-2
Molecular Formula	Polymeric substance; contact for details
Molecular Weight	Polymeric substance; contact for details
Synonyms	Polyurethane resin based on isophthalic acid and m-xylylene diisocyanate (m-XDI); Branched polyester-polyurethane prepolymer; Polyester polyol-m-XDI copolymer; Isophthalic acid-m-XDI-polyol copolymer; PU prepolymer based on isophthalic acid, m-XDI, neopentyl glycol, trimethylolpropane, and bisphenol A ethoxylate; m-XDI-based polyurethane resin
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO/OH content, viscosity, solids content, and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to support your quality assurance protocols.

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); ensure containers are sealed immediately after use to prevent moisture absorption, which can affect product performance. Keep away from heat sources and open flame.

Specification

Item	Specification
Appearance	Viscous liquid to solid (color varies by grade)
NCO Content	Contact for details
Hydroxyl Value (OH#)	Contact for details
Viscosity (at 25°C)	Contact for details
Solids Content	Contact for details
Color (Gardner)	≤ 3 (typical)
Acid Value	≤ 2.0 mg KOH/g
Moisture Content (Karl Fischer)	≤ 0.1%

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