| abstract |
The present invention provides a curable resin composition having excellent heat resistance, transparency, and flexibility, and capable of forming a cured product particularly excellent in barrier properties against corrosive gas. A polyorganosiloxane comprising a polyorganosiloxane (A), an isocyanurate compound (B), and a silane coupling agent (C), wherein the polyorganosiloxane (A) has a structure represented by the formula (I). A curable resin composition which is a silalkylene. (Ra to Rf are each independently H, a monovalent hydrocarbon group or a monovalent heterocyclic group; provided that a part or all of Ra to Rf is an aryl group; Rg is a divalent hydrocarbon group; s2 is an integer greater than or equal to 1) [Selection figure] None |