Hexamethylene bisacrylate

In a 50-ml round-bottomed flask 5 g hexamethylene bisacrylate and 0.2 g of 2-hy-droxy-2-methyl-1 -phenylpropane-1-one as a photoinitiator are stirred until a homogeneous solution is obtained.The flask is evacuated for a short time to remove bubbles from the solution. An IR spectrum is taken of the homogeneous solution. 

---