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A specialized, non-yellowing aliphatic monomer transforming modern elastomer and coatings industries.
Dimeryl Diisocyanate (DDI) represents a unique class of aliphatic diisocyanates synthesized from dimer fatty acids. Unlike conventional aromatic diisocyanates (such as MDI or TDI), DDI features a long-chain aliphatic backbone (typically C36) which imparts exceptional properties to its derivative polyurethanes. The presence of this long hydrocarbon chain structure provides outstanding flexibility, low-temperature elasticity, and remarkable hydrophobic characteristics.
Additionally, DDI has an exceptionally low vapor pressure compared to smaller diisocyanates like HDI or IPDI, which dramatically reduces occupational inhalation hazards during factory processing and formulation operations. This characteristic directly aligns with modern green chemical manufacturing standards and industrial safety policies.
Understanding regional markets, supply constraints, and standard application fields.
DDI acts as an exceptional plasticizer and co-binder in solid rocket propellants. Its high energetic structural integrity and stability under severe temperature fluctuations make it highly valued by global aerospace contractors.
For marine vessel coatings, offshore wind turbines, and extreme industrial environments, DDI polyurethanes provide long-lasting corrosion barriers that block water permeation and withstand saline environments.
With increasing pressures to move away from petrochemical routes, DDI (derived from vegetable dimerized fatty acids) satisfies rigorous bio-content standards without compromising structural or chemical performance.
A reference table for research directors and plant managers to assess parameters.
| Typical Parameter | Technical Specification Value | Testing Standards Compliance | Industrial Value / Core Benefit |
|---|---|---|---|
| Appearance | Pale Yellow to Amber Clear Liquid | Visual Inspection | Easy blending, clean solubility in aliphatic solvents |
| NCO Group Content (%) | 13.5% – 14.5% | Titration Method | High stoichiometry precision for elastomer formulas |
| Viscosity (at 25°C) | 100 – 250 mPa·s | Brookfield Viscometer | Low viscosity, enabling high filler loading capabilities |
| Purity / Active Content | ≥ 98.5% | Gas Chromatography / HPLC | Minimal structural defects during polymer curing |
| Moisture Content | ≤ 0.05% | Karl Fischer Titration | Prevents premature carbon dioxide gassing inside barrels |
| Monomeric Dimer Amine Residue | < 0.1% | Internal Standard GC-MS | Ensures high biocompatibility and minimal vapor toxicity |
Your strategic partner in Chinese specialty chemicals, functional polymers, and metal powders since 2008.
Starting from a fledgling small business unit in 2008, YANXA was founded on a passion for establishing robust international trade connections within the chemical and mechanical sectors.
Over the years, our persistent work, technical expertise, and solid relationships with premier research institutes and certified production bases across China have allowed us to become an elite supplier of specialized raw materials. Today, we deliver top-quality compounds that meet extreme performance profiles.
Our core manufacturing philosophy remains simple but rigid: Quality, safety, and efficiency prevail over all values. We collaborate directly with ISO-certified laboratories and processing plants to customize chemical formulations and support next-generation commercial R&D projects.
YANXA maintains deeply integrated operations in the following fields:
Examine details for our hot product inventory. Original technical descriptions maintained below.
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How YANXA guarantees shipment security, trace-ability, and product conformity.
Our partner manufacturing factories maintain ISO 9001:2008 certifications. Each lot of Dimeryl Diisocyanate, specialty polymer, or nitrate undergoes rigorous quality control inspections before leaving the terminal.
We provide full Certificates of Analysis (COA), gas chromatogram charts, and molecular mass spectrum reports to confirm batch uniformity. Our quality systems monitor primary feedstocks to ensure the final product meets active parameter tolerances.
Specialty chemicals often involve complex safety handling criteria. YANXA possesses decades of logistics experience managing sensitive raw materials. We utilize UN-approved hazardous material drums, vacuum nitrogen-flushed packages, and specialized thermal packaging solutions.
From custom export declarations to compliance with target port environmental laws, our documentation department handles the necessary paperwork (MSDS/SDS, DGD, IMDG certificates) to ensure seamless delivery.
Find answers to common questions about prices, custom packaging, lead times, and global shipping policies.
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