Description

1-Methylpropane-1,3-Diyl Bis[(3-Isocyanatobenzyl)Carbamate] is a specialized, high-purity chemical intermediate of significant importance in advanced polymer synthesis. Its core value lies in its dual isocyanate functionality, which enables it to act as a key cross-linking agent and chain extender in the production of high-performance polyurethanes and polyurea coatings. This compound is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance the mechanical properties, chemical resistance, and durability of their final products.

Application

• As a cross-linking agent in the formulation of high-performance, two-component polyurethane coatings and adhesives.
• As a chain extender in the synthesis of polyurethane and polyurea elastomers for industrial and automotive components.
• In the production of specialty sealants requiring excellent weatherability and bond strength.
• For manufacturing advanced composite materials where enhanced toughness and thermal stability are critical.
• As a reactive intermediate in the research and development of novel polymer architectures with tailored properties.
• In the formulation of industrial and protective coatings for metal, concrete, and other substrates.

Basic Information

Product Name	1-Methylpropane-1,3-Diyl Bis[(3-Isocyanatobenzyl)Carbamate]
CAS No.	65105-00-2
Molecular Formula	C23H24N4O6
Molecular Weight	452.46 g/mol
Synonyms	1,3-Bis(3-isocyanatobenzylcarbamoyloxy)-2-methylpropane; 2-Methylpropane-1,3-diyl bis[(3-isocyanatobenzyl)carbamate]; Bis(3-isocyanatobenzyl) 2-methylmalonate carbamate derivative; m-TMI based diurethane diisocyanate; Aromatic diurethane diisocyanate; Urethane diisocyanate crosslinker; Meta-tetramethylxylylene diisocyanate urethane adduct
EINECS	Contact for details

Quality Control

Our production of 1-Methylpropane-1,3-Diyl Bis[(3-Isocyanatobenzyl)Carbamate] adheres to a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay by titration and impurity profile analysis by HPLC, to meet precise customer specifications. A Certificate of Analysis (COA) detailing all relevant parameters is provided with every 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 a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be protected from atmospheric moisture to prevent degradation and maintain reactivity. Keep away from heat, open flames, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (NCO Content)	≥ 98.0 %
Purity (HPLC)	≥ 97.0 %
Melting Point	Contact for details
Moisture (Karl Fischer)	≤ 0.5 %
Solubility	Soluble in common polar aprotic solvents (e.g., DMF, DMAc)

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