SINOMER® DDDMA (1,12-Dodecanediol Dimethacrylate) is a difunctional methacrylate monomer featuring a 12-carbon aliphatic spacer between two terminal methacrylate groups. This unique C12 hydrophobic backbone provides low viscosity, excellent flexibility, and enhanced molecular mobility, making it an ideal crosslinking comonomer for dental restorative composites, adhesives, and sealants.
SINOMER® DDDMA for Dental Applications
High-Performance Crosslinking Monomer for Dental Composites, Adhesives & Sealants
Chemical Name: 1,12-Dodecanediol Dimethacrylate;1,12-dodecanediyl bismethacrylate
CAS No.: 72829-09-5
MF:C20H34O4
Molecular Structure:
Overview:
SINOMER® DDDMA (1,12-Dodecanediol Dimethacrylate) is a difunctional methacrylate monomer featuring a 12-carbon aliphatic spacer between two terminal methacrylate groups. This unique C12 hydrophobic backbone provides low viscosity, excellent flexibility, and enhanced molecular mobility, making it an ideal crosslinking comonomer for dental restorative composites, adhesives, and sealants.
In dentistry, DDDMA serves as a key component in the resin matrix of dental materials. Its inclusion contributes to improved mechanical properties—such as fracture toughness and flexural strength—while the hydrophobic nature of the dodecamethylene chain reduces water sorption and enhances longevity of restorations.
| Property | Specification |
|---|---|
| Appearance | Light yellow transparent liquid |
| Color (Pt-Co) | ≤ 100 |
| Viscosity (Tu-4 cup, s @ 25°C) | 11 – 13 |
| Acid Value (mg KOH/g) | ≤ 1.5 |
| Functionality | 2 |
| Inhibitor (MEHQ) | Available upon request |
| Benefit | Description |
|---|---|
| Low Polymerization Shrinkage | The long C12 aliphatic chain accommodates volume changes during curing, resulting in significantly lower polymerization shrinkage compared to conventional methacrylate monomers. This reduces internal stress and marginal gap formation in dental restorations. |
| Enhanced Mechanical Properties | DDDMA-formulated dental resins show improved flexural strength, fracture toughness, and wear resistance. Research indicates significantly higher compressive strength compared to traditional composites. |
| Reduced Water Sorption | The hydrophobic dodecamethylene backbone minimizes water uptake, improving dimensional stability and long-term durability of dental materials in the oral environment. |
| Excellent Flexibility & Impact Resistance | DDDMA provides good flexibility and impact resistance, balancing the rigidity of aromatic monomers like Bis-GMA to reduce brittleness in cured restoratives. |
| Low Viscosity | The low-viscosity nature of DDDMA facilitates easy handling and improves filler wetting in composite formulations. |
| Application | Description |
|---|---|
| Restorative Composites | Used as a crosslinking comonomer in the organic resin matrix, enhancing mechanical strength, wear resistance, and longevity of dental restorations. |
| Dental Adhesives | Demonstrates low polymerization shrinkage when used in adhesives; the hydrophobic nature facilitates substrate penetration and improves bond durability. |
| Pit & Fissure Sealants | Incorporated into sealant formulations to improve degree of conversion, mechanical properties, and reduce water sorption. |
| Resin Infiltrants | Used as a hydrophobic monomer in experimental resin infiltrants for treatment of white spot lesions. |
Proven Performance – Backed by dental research demonstrating improved mechanical properties, reduced shrinkage, and enhanced durability
Hydrophobic Advantage – The C12 aliphatic chain reduces water sorption, a critical factor for long-term clinical success of dental restoratives
Low Shrinkage – Significantly lower polymerization shrinkage compared to other methacrylate crosslinkers
Reliable Supply – Consistent quality with full traceability and technical support
Cost-Effective Alternative – Competitive pricing without compromising performance
Formulation Considerations:
DDDMA is typically used as a co-monomer in dental resin formulations, often in combination with base monomers such as Bis-GMA, UDMA, or TEGDMA. Its low viscosity and hydrophobic nature make it an excellent choice for reducing water sorption and improving the overall balance of mechanical and physical properties in dental materials.
For specific formulation recommendations and technical support, please contact our team.
20kg or 200 kg/drum
Q: What makes DDDMA suitable for dental composites compared to other crosslinkers?
A: DDDMA's unique C12 hydrophobic spacer chain provides an optimal balance of low polymerization shrinkage, reduced water sorption, and enhanced mechanical properties—critical factors for long-term clinical performance of dental restoratives.
Q: How does DDDMA compare to Bis-GMA or UDMA in dental applications?
A: While Bis-GMA provides high rigidity and UDMA offers excellent flexibility, DDDMA functions as a hydrophobic crosslinking diluent that reduces viscosity, lowers water sorption, and improves flexibility without compromising mechanical strength. It is often used in combination with these base monomers to achieve optimal formulation properties.
Q: Is DDDMA suitable for food contact or biocompatible applications?
A: DDDMA is widely used in dental materials that are in contact with oral tissues. However, we recommend customers verify compliance with relevant regional regulations (FDA, MDR, etc.) based on their specific formulation and intended use.
Q: What is the recommended storage condition for SINOMER® DDDMA?
A: Store in a dry, clean, well-ventilated warehouse, protected from light and heat. Shelf life is 12 months in the original unopened container.
Q: Can SINOMER® DDDMA be customized for specific dental applications?
A: Yes, we offer flexible specifications including inhibitor levels and purity grades to meet specific formulation requirements. Please contact our technical team for customization options.
We offer a variety of options to help you find the right product for your application
Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
