It is an object of the present invention, with respect to a phenol aralkyl type epoxy resin, to suppress any crystal precipitation, improve the quality manageability and operation efficiency at composition production and enhance the properties, including heat resistance, thereof It is also intended to provide a resin composition that even when stored in the form of a varnish for a prolonged period of time, is resistant to crystal precipitation, excelling in storage stability and operation efficiency, and that gives a hardening product of low dielectric constant and low dielectric tangent excelling in heat resistance, water resistance and flame retardance.
There is provided an epoxy resin characterized by comprising a phenol aralkyl type epoxy resin in which a content (an area % measured by gel permeation chromatography) of a bifunctional compound is 20% or less, and provided a resin composition obtained therefrom.
本发明的目的是针对
苯酚芳烷基型环氧
树脂,抑制任何晶体析出,提高组合物生产的质量管理性和操作效率,并增强包括耐热性在内的各种性能、其目的还在于提供一种
树脂组合物,该
树脂组合物即使以清漆的形式长期储存,也能防止结晶析出,在储存稳定性和操作效率方面表现优异,并能提供低介电常数和低介电常数的硬化产品,在耐热性、耐
水性和阻燃性方面表现优异。
本发明提供了一种环氧
树脂,其特征在于该环氧
树脂由
酚芳基型环氧
树脂组成,其中双官能团化合物的含量(用凝胶渗透色谱法测量的面积百分比)为 20% 或更少,并提供了由此获得的
树脂组合物。