To obtain a urethane(meth)acrylate that has high reactivity on radiation curing and a slightly low viscosity by reacting a polyether- or polyester(meth)acrylate or an epoxide(meth)acrylate with an isocyanate.
The urethane(meth)acrylate is obtained by reacting (A) a polyether- or polyester(meth)acrylate or an epoxide(meth)acrylate in which 0.5-60 mole % of the (meth)acrylate groups are present in the form of Michael adduct with a primary or secondary amine which has at least one free hydroxyl group with (B) an isocyanate (e.g.; 1,4-butane diisocyanate or the like). As the component A, a polyester acrylate and, especially, a polyether acrylate are particularly preferred. It is preferable that a photoinitiator is added to the urethane(meth)acrylate.
| WO/1992/007888 | ORGANIC GLASS FOR OPTICAL PART |
| JPS6195087 | GROUT COMPOSITION |
| JP6979559 | Active energy ray-curable hard coat agent, hard coat layer and laminate |
EERITSUHI BETSUKU
EDOMUNTO KAIRU
URURITSUHI IEEGAA
MATSUTEIASU ROOKAI
BUERUNAA FURIISU
EEBERUHARUTO AMUBATSUHA
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