Epoxy acrylates – property modification
The most commonly known oligomer is bisphenol A diglycidyl ether diacrylate. It is cured by a rapid, ultraviolet light or electron beam induced reaction. Though widely used, bisphenol A diglycidyl ether based resins are prone to certain disadvantages such as a slow, but ever progressing yellowing and high viscosity.
allnex’ expert chemists have tackled these challenges by creating modern bisphenol A derivates, as well as new high-performance epoxy acrylates and epoxy acrylate blends with customizable properties fitting every need. An important parameter is the epoxide equivalent weight of the resin. Depending on the ratio between the number of epoxide groups and the molecular weight of the monomer, the physical properties of the resin can be modified by using diluting agents to adapt to the requirements suited for every application.
The oligomer can be tailored with diverse attributes for high gloss effects and improvement of adhesion to challenging materials like rigid and flexible plastics, industrial metals or wood. Other modifications are employed to create excellent pigment wetting, low odor, and low to no volatile organic compounds (VOC) for indoor uses.
allnex offers a wide variety of diluting monomers such as hexanediol diacrylate or tripropyleneglycol triacrylate to achieve specific properties and viscosities as commercial blends such as EBECRYL® 3415 and EBECRYL® 3700/18OT.