Liquid UV Curable Cyclohexanedimethanol Diacrylate Monomers

摘要

UNOXOL Diol is a liquid cycloaliphatic diol based on a unique composition of (cisjrans)-1,3/1,4 cyclohexanedimethanol, and is a starting material for synthesis of acrylate monomers for use in ultraviolet (UV) and electron beam (EB) cured coatings, inks, and adhesives. Diacrylate monomers prepared from this unique diol and containing less than 15 wt.% trans-1,4-cyclohexanedimethanol diacrylate, are liquid at room temperature and readily soluble in other acrylate monomers and oligomers (in contrast to diacrylates prepared from 1,4-cyclohexanedimethanol, which are solid). More importantly, UV cured coatings based on (cis, trans)-1,3/1,4 cyclohexanedimethanol diacrylates show superior hardness, scratch resistance, abrasion resistance, and chemical resistance, compared to common diacrylate monomers used in the UV coating industry, such as tripropylene glycol diacrylate, hexanediol diacrylate, dipropylene glycol diacrylate, and propoxylated neopentyl glycol diacrylate. Thus, this new monomer appears to be a promising material for enhancing the performance of radiation cured coatings, inks, and adhesives. This paper will summarize the synthesis of novel liquid cyclohexanedimethanol diacrylates, as well as, the performance properties of the corresponding UV cured coatings.