EXOTHANE ™ Elastomers represent the most recent advances in Esstech's urethane chemistry. These versatile materials offer performance enhancements across a broad range of demanding formulations.

Every application is unique and requires its own specific set of attributes. Use the unique properties of EXOTHANE Elastomers to modify formulations, without using non-reactive additives. Like many of Esstech's other products, potential applications involving EXOTHANE Elastomers can vary across many industries, from medical devices and cosmetic products, to curable coatings and adhesives

Exothane Comparison


Exothane Elastomers:

Exothane 8 is a low colour urethane that is a viscous liquid at room temperature. Upon cure, Exothane 8 creates a soft, yet tough polymer with percent elongation near 80%.

Exothane 8
 
 Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.4855
Inhibitor MeHQ - 8 ppm, BHT - 584 ppm
 
CAS Registration ND
Toxic Substance Control Act List Listed

 

Toughness at max strength (J)
5.66
Conversion (%) 94.2
Volumetric Shrinkage (MPa) 3.3
Average Shrinkage Stress (MPa) 0.3
Colour (APHA) 30
Avg. Hardness 69
Maximum Strength (N) 345.4
Tensile Strength (N/mm^2) 17.31
Modulus (GPa) 0.0761
Elongation (%) 79.28
Viscosity (PaS) 30.11
 

 
Our extended UDMA is commonly used in photo-cure applications. The PEG 400 backbone creates a flexible polymer upon curing. Adding X-726-0000 has been shown to increase the fracture toughness of UDMA. X-726-0000 also has very low viscosity and low colour.

Exothane 9
 
 Typical Properties
Molecular Formula C54 H98 N4 O21
Molecular Weight 1139.4
Refractive Index 1.483
Inhibitor MeHQ - 500 ppm
 
CAS Registration 72869-86-4
Toxic Substance Control Act List Listed
Toughness at max strength (J) 2.74
Conversion (%) 96.8
Volumetric Shrinkage (MPa) 5.3
Average Shrinkage Stress (MPa) 0.3
Colour (APHA) 21
Avg. Hardness 70
Maximum Strength (N) 358.77
Tensile Strength (N/mm^2) 17.03
Modulus (GPa) 0.124
Elongation (%) 32.96
Viscosity (PaS)1.855 1.855


 
This novel urethane provides very low shrinkage values upon cure as well as good conversion and enhanced toughness. Exothane 10’s high viscosity enables it to be a rheological modifier in UV-cure formulations requiring improved mechanical properties. The resulting homopolymer of Exothane 10 is hard, tough and shiny.

Exothane 10
 
 Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.494
Inhibitor MeHQ - 29ppm, BHT - 3730ppm
 
CAS Registration ND
Toxic Substance Control Act List Listed

 

Toughness at max strength (J)
15.1
Conversion (%) 83.2
Volumetric Shrinkage (MPa) 3.2
Average Shrinkage Stress (MPa) 0.4
Colour (APHA) 29
Avg. Hardness 73
Maximum Strength (N) 607.14
Tensile Strength (N/mm^2) 28.5
Modulus (GPa) 0.345
Elongation (%) 64.45
Viscosity (PaS) 70


 
Exothane 24 has increased cross-linking capacity and is low in colour and viscosity. Neat polymers of Exothane 24 have very high Shore D hardness values

Exothane 24
 
 Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.4853
Inhibitor MeHQ - 67 ppm, BHT - 1042ppm
 
CAS Registration ND
Toxic Substance Control Act List Not Listed

 

Toughness at max strength (J)
0.423
Conversion (%) 49.9
Volumetric Shrinkage (MPa) 4.2
Average Shrinkage Stress (MPa) 2.4
Colour (APHA) 26
Avg. Hardness 93
Maximum Strength (N) 612.96
Tensile Strength (N/mm^2) 28.54
Modulus (GPa) 0.759
Elongation (%) 4.78
Viscosity (PaS) 3.77


 

The homopolymer of Exothane 26 has the unique ability to re-adhere to itself at lower tensile strength. Exothane 26 exhibits high flexibility when cured.

Exothane 26
 

Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.4766
Inhibitor MeHQ - 22 ppm, BHT - 586 ppm
 
CAS Registration ND
Toxic Substance Control Act List Listed

 

Toughness at max strength (J)
1.3
Conversion (%) 96.2
Volumetric Shrinkage (MPa) 3.36
Average Shrinkage Stress (MPa) 0.1
Colour (APHA) 24
Avg. Hardness 53
Maximum Strength (N) 124.7
Tensile Strength (N/mm^2) 5.9
Modulus (GPa) 0.017
Elongation (%) 45.69
Viscosity (PaS) 15.51


 
Like Exothane 26, Exothane 32 also has the ability to re-adhere to itself after breaking. It is very low in colour and viscosity and provides improved flexibility to formulations.
 

Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.4776
Inhibitor MeHQ - 7 ppm, BHT - 614 ppm
 
CAS Registration ND
Toxic Substance Control Act List Listed

 

Toughness at max strength (J)
0.585
Conversion (%) 97.4
Volumetric Shrinkage (MPa) 3.1
Average Shrinkage Stress (MPa) 0.2
Colour (APHA) 17
Avg. Hardness 37
Maximum Strength (N) 60.46
Tensile Strength (N/mm^2) 2.88
Modulus (GPa) 0.008
Elongation (%) 33.77
Viscosity (PaS) 5.938


 
The polymer of Exothane 108 is tough and has over 100% elongation. It also has a high rate of conversion with low average shrinkage stress.

Exothane 108
 Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.4866
Inhibitor MeHQ - 70ppm, BHT - 614 ppm
 
CAS Registration ND
Toxic Substance Control Act List Listed

 

Toughness at max strength (J)
5.15
Conversion (%) 94.9
Volumetric Shrinkage (MPa) 2.4
Average Shrinkage Stress (MPa) 0.3
Colour (APHA) 16
Avg. Hardness 59
Maximum Strength (N) 60.46
Tensile Strength (N/mm^2) 13.34
Modulus (GPa) 0.008
Elongation (%) 100.03
Viscosity (PaS) 38.000
 

 

The homopolymer of Exothane 126 has very high conversion and very low shrinkage. It is also very soft and rubber-like.

Exothane 126
 

Typical Properties
Molecular Formula Proprietary
Molecular Weight Proprietary
Refractive Index 1.4791
Inhibitor MeHQ - 7 ppm, BHT - 614ppm
 
CAS Registration ND
Toxic Substance Control Act List Listed

 

Toughness at max strength (J)
.26
Conversion (%) 98.1
Volumetric Shrinkage (MPa) 1.9
Average Shrinkage Stress (MPa) 0.1
Colour (APHA) 20
Avg. Hardness 35
Maximum Strength (N) 60.46
Tensile Strength (N/mm^2) 2.09
Modulus (GPa) 0.008
Elongation (%) 29.13
Viscosity (PaS) 14.000