Description

1,3-Benzenedicarboxylic acid, polymer with 2,4-diisocyanato-1-methylbenzene, hexanedioic acid, .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl), 1,1-methylenebis4-isocyanatobenzene, 2,2-oxybisethanol, 1,1-oxybis2-propanol and 1,2-propanediol is a specialized, high-performance polyurethane prepolymer or resin intermediate. This compound is engineered to deliver exceptional durability, flexibility, and chemical resistance in demanding industrial formulations. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries for creating advanced polyurethane-based products.

Application

• High-Performance Coatings: Used as a key binder in industrial and protective coatings for metal, concrete, and plastic substrates, offering excellent weatherability and corrosion resistance.
• Advanced Adhesives & Sealants: Serves as a primary component in formulating structural adhesives, potting compounds, and flexible sealants with strong bonding and elastic properties.
• Elastomer Production: A critical intermediate for manufacturing cast, thermoplastic, or millable polyurethane elastomers used in wheels, rollers, and industrial parts.
• Composite Materials: Incorporated into resin systems for fiber-reinforced plastics (FRP) and other composites to enhance mechanical strength and impact resistance.
• Textile & Leather Finishes: Utilized in coatings for textiles, synthetic leather, and other fabrics to provide water resistance, durability, and a soft hand feel.
• Specialty Binders: Acts as a reactive binder in specialty applications such as magnetic media, abrasive wheels, and vibration-damping materials.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 2,4-diisocyanato-1-methylbenzene, hexanedioic acid, .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl), 1,1-methylenebis4-isocyanatobenzene, 2,2-oxybisethanol, 1,1-oxybis2-propanol and 1,2-propanediol
CAS No.	256236-71-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane prepolymer based on isophthalic acid, TDI, MDI, and polyols; Polyurethane resin intermediate; Isophthalic acid-TDI-MDI-polyol copolymer; PU prepolymer; Aromatic polyurethane polyol; Copolymer of isophthalic acid, toluene diisocyanate, methylene diphenyl diisocyanate, adipic acid, and polyether polyols; Polyurethane oligomer
EINECS	Contact for details

Quality Control

Our production of this polyurethane intermediate 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) and must be protected from atmospheric moisture to prevent premature reaction and viscosity increase. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 4
Solids Content	Contact for details
Viscosity (at 25°C)	Contact for details
NCO Content	Contact for details
Hydroxyl Value (OH#)	Contact for details
Acid Value	≤ 2.0 mg KOH/g
Moisture Content (Karl Fischer)	≤ 0.05%

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