Quinone → Urethane acrylate

Participants

Reaction Conditions

Reaction Steps

A vinyl terminated, fully reacted urethane acrylate was prepared by charging 422 parts of the oxypropylated novolac prepared in Example 1 (2.65 hydroxyl equivalents), 381 parts of hydroxypropyl methacrylate (2.65 moles), 1283 parts of styrene solvent, and 0.28 parts of p-benzoquinone inhibitor to a reactor and heating to 50° C to effect dissolution of the reactants. To the solution was added 460 parts (2.65 moles) of toluene diisocyanate (a commercially available mixture of approximately 80 percent 2,4-isomer and 20 percent 2,6-isomer) and the solution was heated and maintained at about 70° - 80° C with stirring for about 4 hours.

Provenance & Evidence