| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyglycerol (meth)acrylate capable of being easily produced, having low viscosity, excellent in transparency, curability, storage stability and safety, and useful as a reactive diluent.SOLUTION: The polyglycerol (meth)acrylate has a structure in which a meth)acryloyl group is substituted for a hydrogen atom (H) of at least one hydroxyl group (OH group) of the following high branched polyglycerol. The high branched polyglycerol is a polyglycerol in which a polymerization degree is 3 or more and 50% or more of all hydroxyl groups is a primary hydroxyl group. The polyglycerol (meth)acrylate preferably has a viscosity (measured by an E type viscometer) at 25°C of 2000 mPa s or less. |
