2-Hydroxyethyl acrylate → Urethane acrylate

Participants

Reaction Conditions

Reaction Steps

In the same reaction vessel as in Synthesis Example 1, 444.6 parts by mass (2 moles) of IPDI and 900.0 parts by mass of an aromatic polyester diol (weight average molecular weight: 900, 1 mole, YG-108 [trade name] manufactured by Adeka Corp.) were placed, and while stirring the mixture, 0.27 parts by mass of tin octylate was added to the mixture, the temperature inside the reaction vessel was increased to 85° C., and the obtained mixture was allowed to react for 2 hours. Then, 232.3 parts by mass (2 moles) of 2-hydroxyethyl acrylate, 0.79 parts by mass of methoquinone, and 0.63 parts by mass of tin octylate were placed in the reaction vessel and mixed, and under air bubbling, the temperature inside the reaction vessel was increased to 85° C. and the obtained mixture was allowed to react for 2 hours. Then, the reaction mixture was cooled to obtain the urethane acrylate for fixing. The weight average molecular weight of the urethane acrylate for fixing was 5,000.

Provenance & Evidence