ACTINIC RADIATION-CURABLE COMPOSITION FOR FORMED-IN- PLACE GASKETS AND FORMED-IN-PLACE GASKETS

摘要

An actinic radiation-curable composition for formed -in-place gaskets which is excellent in curability and can provide formed-in-place gaskets excellent in heat resistance, weather resistance, oil resistance, compression set, and so on. The composition is one which comprises the following components (A) and (B) as the essential components and exhibits a viscosity of 400Pa.s or below at 23˚C and which gives cured articles having compression set of 30% or below as stipulated in JIS K 6262: (A) a vinyl polymer bearing two or more (meth)acryloyl groups per molecule at the molecular ends, and (B) a vinyl polymer bearing one (meth)acryloyl group per molecule at the molecular end.