| http://www.w3.org/ns/prov#value | - Examples of the multifunctional monomer having at least 2 ethylenically unsaturated groups are diesters formed by esterifying both of the terminal hydroxyl groups of ethylene glycol or an oligomer thereof (e.g. HO-(CH2 CH2 O)n -H wherein n is an integer of 2 to 10) with acrylic acid or methacrylic acid, such as ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glyco
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