The successful production of quality composites, coatings and adhesives requires monomers featuring low colour and acid in addition to the appropriate inhibitor, viscosity and refractive index values. A low colour raw material will enhance the appearance of the final product. The low acid value reduces the amount of inhibitor required while extending the shelf life of your product. A consistent viscosity allows you to reproduce the same product time after time.

Technical notes

Base Resins:



UDMA-IPDI has a higher viscosity than our X850 0000, Urethane Dimethacrylate. The high molecular weight of X851 1066 results in lower polymerisation shrinkage when cured.

 
Typical Properties
Molecular Formula C24H38N2O8
Molecular Weight 482.57
Purity (%) TBD
Moisture (%) TBD
Acidity (% Methacrylic Acid) TBD
Refractive Index 1.4938
Specific Gravity TBD
Viscosity 25C TBD
Residual HEMA (%) TBD
MeHQ TBD
CAS Registration Number 72869-86-4
Toxic Substance Control Act List TBD


Our extended UDMA is commonly used in light cure systems. Its PEG 400 portion creates a more flexible polymer upon curing. Adding this product has been shown to increase the fracture toughness of UDMA.

 
Typical Properties
Molecular Formula C54H98N4O21 (x=1)
 
Molecular Weight 1139.4
 
Purity (%) >80
Moisture (%) <0.1
Acidity (% Methacrylic Acid) <1.0
Refractive Index 1.480
Specific Gravity 1.140 g/mL
Viscosity 25C 3500 cps
Residual HEMA  (%) <1.0
MeHQ Inhibitor 400-500ppm
CAS Registration Number 72869-86-4
Toxic Substance Control Act List Listed


Bisphenol A Glycidyl Methacrylate, or bis-GMA is a high viscosity resin that has been used in dental formulations for years. Our bis GMA is manufactured with low levels of BPA or bisphenol A and low colour.
Typical Properties
Molecular Formula C29H36O8
 
Molecular Weight 512.599
Purity (%) >85
Index of Refraction 1.540
Acidity (KOH per Gram) 4.2mg
Viscosity 700000
Colour (APHA) 50 max
Inhibitor HQ -350 max ppm MeHQ 600 max ppm
CAS Registration Number 1565-94-2
Toxic Substance Control Act List Listed


To simplify your formulation processes, we provide bis GMA already diluted in a 80:20 ratio with TEGDMA. Bis-GMA and triethylene glycol dimethacrylate are commonly paired in dental formulations. All of our bisGMA products carry the lowest lelvels of BPA or bisphenol A on the market

 
 Typical Properties
Index of Refraction 1.527
Viscosity 4500-9500 cps
MeHQ Inhibitor 600 max ppm
CAS Registration Number 1565-94-2
Toxic Substance Control Act List All components listed
Secondary CAS Number 109-16-0
 
Assay
BisGMA (%) 78-82
TEGDMA (%) 18-22


To simplify your formulation processes, we provide bis GMA already diluted in a 50:50 ratio with TEGDMA. Bis-GMA and triethylene glycol dimethacrylate are commonly paired in dental formulations. All of our bisGMA products carry the lowest levels of bisphenol A or BPA on the market

 
Typical Properties
Index of Refraction 1.500
Viscosity 225cps
MeHQ Inhibitor 600 max ppm
CAS Registration Number 1565-94-2
Toxic Substance Control Act List All components listed
Secondary CAS Number 109-16-0
 
Assay
BisGMA (%) 48-52
TEGDMA (%) 48-52

 

This form of EBPADMA has 2 to 4 units of ethoxylation and is sometimes referred to bis-EMA or Isopropylidenediphenol PEG-2 Dimethacrylate. It is often used in blends with triethyleneglycol dimethacrylate and bisGMA. This material has low levels of water sorption and a high polymerization rate. X970 0000 has also been used in anaerobic adhesive applications. CAS number 41637-38-1

Typical Properties
Molecular Formula C29H36O7
 
Molecular Weight 496.582
Purity (%) >87
Index of Refraction 1.535
Acidity (% Methacrylic Acid) <0.02
Viscosity 25c 775 cps
Moisture (%) <0.1
Specific Gravity 1.121g/mL
MeHQ Inhibitor 250-450 ppm
CAS Registration Number 41637-38-1
Toxic Substance Control Act List Listed



 


 


This form of EBPADMA has 6 units of ethoxylation. Increasing the ethoxylated chain length, increases the mobility of the molecule and therefore its reactivity and degree of conversion.

 
Typical Properties
Molecular Formula C35H48O10
Molecular Weight 628.7
Purity (%) >87
Index of Refraction 1.525
Acidity (% Methacrylic Acid) <0.1
Viscosity 25c 450 cps
Moisture (%) <0.2
Specific Gravity 1.120 g/mL
Colour ( APHA) 250 max
MeHQ Inhibitor 200-350 ppm
CAS Registration Number 41637-38-1
 

 

Urethane Dimethacrylates are often used in light-cure systems. Our X-850-0000, UDMA, cures to form a hard, glassy surface that is low in colour and is considered bisphenol A free.Various urethane dimethacrylates have been used in anaerobic adhesive applications. This material has also been referred to as diurethane dimethacrylate, DUDMA as well as Di-HEMA Trimethylhexyl Dicarbamate. 

Typical Properties
Molecular Formula C23H38N2O
Molecular Weight 470.563
Purity  (%) >92
Moisture (%) <0.2
Acidity (% Methacrylic Acid) <0.3
Refractive Index 1.483
Specific Gravity 1.129 g/mL
Viscosity 25c 8500cps
Residual HEMA (%) <1.0
MeHQ Inhibitor 100-200ppm
CAS Registration Number 72869-86-4
Toxic Substance Control Act List listed
Colour (APHA) 25 max
 
 
Esschem now offers a blend comprising of 70% BisGMA and 30% TEGDMA. Creating a BisGMA-TEGDMA base formulation has never been easier.

 
Typical Properties
Index of Refraction 1.523
Viscosity 125-325 cps
MeHQ Inhibitor 600 max ppm
CAS Registration Number 1565-94-2
Toxic Substance Control Act List All components listed
Seconday CAS Number 109-16-0
 
Assay
BisGMA (%) 68-72
TEGDMA (%) 28-32


This form of EBPADMA has 8 units of ethoxylation. Increasing the ethoxylated chain length increases the mobility of the molecule and therefore it reactivity and degree of conversion.

 
 Typical Properties
Molecular Formula C39H56O12
Molecular Weight 716.8
Purity (%) >87
Index of Refraction 1.518
Acidity (% Methacrylic Acid) <0.05
Viscosity 25c 525 cps
Moisture (%) <0.2
Specific Gravity 1.122 g/mL
Toxic Substance Control Act Listed
MeHQ Inhibitor 150-250 ppm
CAS Registration Number 41637-38-1


This form of EBPADMA has 30 units of ethoxylation. It has a high degree of conversion neat and when blended with bisGMA. It also offers high levels of water sorption. 
 
Typical Properties
Molecular Formula C83H144O34
 
Molecular Weight 1686
Purity (%) >87
Index of Refraction 1.492
Acidity (% Methacrylic Acid) <0.05
Viscosity 25c 600 cps
Moisture (%) <0.2
Specific Gravity 1.200 g/mL
Toxic Control Substance Act List Listed
MeHQ Inhibitor 150-250 ppm
CAS Registration Number 41637-38-1


This form of EBPADMA has 10 units of ethoxylation. Polymerization of this material results in a rigid polymer with high degree of conversion

 
Typical Properties
Molecular Formula C43H64O14
 
Molecular Weight 805
Purity (%) TBD
Moisture (%) TBD
Acidity (% Methacrylic Acid) TBD
Refracxtive Index 1.5112
Viscosity 25c 410 cps
CAS Registration Number 41637-38-1
Toxic Substance Control Act List Listed