The challenges involved in formulating products can be overcome by the inclusion of specifically designed monomers. Monomers used in these applications can act as diluents or actively participate in forming a polymer matrix. To modify the polymer matrix, you must know what monomers can be added in what quantities to achieve the desired properties. The process of identifying the correct molecule with the correct purity and inhibitor level is difficult.

Monofunctional Monomers:



Hydroxyethyl methacrylate or HEMA is a high purity methacrylate monomer with many applications including: contact lenses, anaerobic adhesives, light-curing systems and high performance coatings.

 
Typical Properties
Molecular Formula C6H10O3
Molecular Weight 130.143
Purity (%) >99
Refractive Index 1.452
Specific Gravity 1.070g/mL
Acidity (% Methacrylic Acid) <0.5
Colour (APHA) 10 max
Moisture (%) <0.1
MeHQ Inhibitor 40-80ppm
CAS Registration Number 868-77-9
Toxic Substance Control Act List Listed
 


This HEMA has the adhesive qualities and multiple applications of other hydroxyethyl methacrylates along with additional stability.

 
 Typical Properties
Molecular Formula C6H10O3
Molecular Weight 130.143
Purity (%) >99
Refractive Index 1.452
Specific Gravity 1.070g/mL
Acidity (% Methacrylic Acid) <0.5
Colour (APHA) 10 max
Moisture (%) <0.1
MeHQ Inhibitor 200-300ppm
CAS Registration Number 868-77-9
Toxic Substance Control Act List Listed


HEMA is a primary alcohol, making it a good adhesion promoter in anaerobic adhesives. The purity level of this methacrylate monomer also makes it cost efficient.

 
Typical Properties
Molecular Formula C6H10O3
Molecular Weight 130.143
Purity (%) >95
Refractive Index 1.452
Specific Gravity 1.070g/mL
Acidity (% Methacrylic Acid) <0.25
Colour (APHA) 10 max
Moisture (%) <0.1
MeHQ Inhibitor 100-200ppm
CAS Registration Number 868-77-9
Toxic Substance Control Act List Listed
 


HPMA or hydroxypropyl methacrylate contains a secondary alcohol group and is often considered to have less allergic reaction potential than other methacrylates. HPMA has been formulated in anaerobic adhesives and coatings
 
Typical Properties
Molecular Formula C7H12O3
Molecular Weight 144.170
Purity (%) >99
Refractive Index 1.445
Specific Gravity 1.027g/mL
Acidity (% Methacrylic Acid) <0.15
Colour (APHA) 50 max
Moisture (%) <0.3
MeHQ Inhibitor 225ppm
CAS Registration Number 27813-02-1
Toxic Substance Control Act List Listed


EOEMA is a high purity methacrylate monomer often used for, but not limited to contact lens applications.
 
Typical Properties
Molecular Formula C8H14O3
Molecular Weight 158.2
Purity (%) >95
Refractive Index 1.4275
Specific Gravity 0.960 g/mL
Acidity (% Methacrylic Acid) <0.05 mg
Colour (APHA) 25 max
Moisture (%) <0.05
MeHQ Inhibitor 50-300ppm
CAS Registration Number 2370-63-0
Toxic Substance Control Act List                Listed


MOEOEMA is a methacrylate with a variety of applications including: coatings, pressure senstive adhesives and nail enhancements.
 
Typical Properties
Molecular Formula C9H16O4
Molecular Weight 188.223
Purity (%) >85
Refractive Index 1.438
Specific Gravity 1.018g/mL
Acidity (% Methacrylic Acid) <0.05
Colour (APHA) 75 max
Moisture (%) <0.5
Inhibitor BHT - 500 ppm
CAS Registration Number 45103-58-0
Toxic Substance Control Act List Listed
 


Acetoacetoxy ethyl methacrylate, also known as AAEMA, is a low viscosity, monofunctional methacrylate. The two ketone groups in its' backbone can chelate various cations allowing for adhesion between methacrylate resins or plastics and metals. The homopolymer of acetoacetoxyethyl methacrylate has a low Tg creating the potential for use as a toughening agent in polymer systems
 
Typical Properties
Molecular Formula C10H14O5
Molecular Weight         214.22
Purity (%) >85
Refractive Index 1.454
Specific Gravity 1.12mL
Acidity (% Methacrylic Acid)                               7 mg KOH/g
Colour (APHA) 75
Moisture (%) 0.03
Inhibitor BHT - 400 ppm
CAS Registration Number 21282-97-3
Toxic Substance Control Act List Listed


Tetrahydrofurfuryl Methacrylate or THFMA is a polar monomethacrylate containing a five-membered heterocyclic group that works well as an adhesion promoter in anaerobic adhesive and other applications.
 
Typical Properties
Molecular Formula C9H14O3
Molecular Weight      170.208
Purity (%) >95
Refractive Index 1.456
Specific Gravity 1.035 g/mL
Acidity (% Methacrylic Acid)                            <0.1
Colour (APHA) 100 max
Moisture (%) <0.2
Inhibitor MeHQ 80-120  ppm
CAS Registration Number 2455-24-5
Toxic Substance Control Act List Listed


Tetrahydrofurfuryl Methacrylate or THFMA is a polar monomethacrylate containing a five-membered heterocyclic group that works well as an adhesion promoter in anaerobic adhesive and other applications.
 
Typical Properties
Molecular Formula C9H14O3
Molecular Weight      170.208
Purity (%) >95
Refractive Index 1.456
Specific Gravity 1.035 g/mL
Acidity (% Methacrylic Acid)                            <0.1
Colour (APHA) 100 max
Moisture (%) <0.2
Inhibitor HQ 50-70  ppm
CAS Registration Number 2455-24-5
Toxic Substance Control Act List Listed


The cyclic group of isobornyl methacrylate allows it to react in free radical polymerization while also acting as an excellent diluent.

 
 Typical Properties
Molecular Formula C14H22O2
Molecular Weight 222.328
Purity (%) >98.5
Refractive Index 1.475
Specific Gravity 0.980 g/mL
Acidity (% Methacrylic Acid) <0.1
Colour (APHA) 75 max
Moisture (%) <0.2
MeHQ Inhibitor 120-180 ppm
CAS Registration Number 7534-94-3
Toxic Substance Control Act List Listed


Trifluoroethyl methacrylate has a high purity and low refractive index. It is often used in photocrosslinkable compositions and contact lens applications.
                                         
Typical Properties
Molecular Formula C6H7O2F3
Molecular Weight 168.110
Purity (%) > 99
Colour (APHA) 20 max
Moisture (%) < 0.05
Acidity (% Methacrylic Acid) <0.1
MeHQ Inhibitor 80-120 ppm
CAS Registration Number 352-87-4
Toxic Substance Control Act List Listed
Lauryl Acrylate is a low viscosity monofunctional monomer that can increase hydrophobicity of formulations due to its aliphatic tail. It also can improve the flexibility and chemical resistance of various formulations.

 
Typical Properties

 Molecular Formula

C15H28O2  
Molecular Weight 240.38
Purity (%) 99.0 min
Acidity (%) 0.01 max
Moisture (%) 0.05 max
Acid 0.3 max mg KOH/g  
MeHQ Inhibitor MeHQ 100 ppm
Refractive Index @ 25c 1.444
Viscosity @ 25ºc (cps) 4
CAS Registration Number 2156-97-0

Lauryl Methacrylate is a monofunctional methacrylate with a long chain hydrophobic pendant group. Lauryl Methacrylate can be used to improve flexibility, water resistance, adhesion and improved impact resistance to a large range of polymers.
 

 Typical Properties
Molecular Formula C16H30O2
Molecular Weight 254.41
Purity (%) 98.0 min
Colour ( APHA) 15 max
Moisture (%) 0.2 max
Acid 0.2 max mg KOH/g
MeHQ Inhibitor MeHQ 150 ppm
Refractive Index @ 25c 1.445
CAS Registration Number 142-90-5