| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an energy ray-curable material for a gasket, providing the gasket capable of inhibiting the occurrence of crack and breakage by improving breaking elongation without damaging processability and other required properties. <P>SOLUTION: The material for the gasket comprises (A) an energy ray-curable liquid oligomer having a (meth)acryloyl group, (B) a (meth)acrylate monomer and (C) a polythiol compound having two to six mercapto groups in the molecule, and is regulated so that the ratio of functional groups of the (meth)acryloyl groups to the mercapto groups of the (C) component in the material for the gasket may be from 100:0.1 to 100:5n (wherein, n is a number of the mercapto groups in one molecule of the polythiol compound), and the molecular weight Mc between crosslinking points calculated by Flory-Rehner's equation of the cured product formed by the irradiation with the energy rays may be within the range of from 6,000 to 55,000. <P>COPYRIGHT: (C)2011,JPO&INPIT |
