PROBLEM TO BE SOLVED: To provide a putty-like curable silicone composition capable of hand malaxation, which shows high light transparency after curing.SOLUTION: Provided is a curable silicone composition comprising: a component (1) which is an organopolysiloxane having at least two unsaturated groups in one molecule a component (2) which is an organohydrogenpolysiloxane having at least two SiH groups in one molecule a component (3) which is a filler and a component (4) which is a catalyst. A difference in refractive index between components having the highest refractive index and the lowest refractive index among the components (1) to (4) is set within 0.1000, and a complex viscosity [measurement conditions: stage temperature=23°C strain amount=1% frequency=0.1 Hz to 100 Hz measurement method=frequency dispersion measurement and measurement point=angular frequency of 25 rad/s] of any constituent composition before curing is set in a range of 10 Pa s to 100000 Pa s.COPYRIGHT: (C)2015,JPO&INPIT【課題】硬化後に高い光透過性を示す、手練和が可能なパテ状の硬化性シリコーン組成物を提供する。【解決手段】成分(1)1分子内に少なくとも2個の不飽和基を有するオルガノポリシロキサン、成分(2)1分子内に少なくとも2個のSiH基を有するオルガノハイドロジェンポリシロキサン、成分(3)充填材、及び成分(4)触媒を含む硬化性シリコーン組成物であって、成分(1)~成分(3)のうち最も屈折率の高い成分と、最も屈折率の低い成分との屈折率差を0.1000以内とし、且ついずれかの構成組成物における硬化前の複素粘度[測定条件 ステージ温度:23℃、ひずみ量:1%、周波数:0.1Hz~100Hz、測定方法:周波数分散測定、測定点:角周波数25rad/s]を10Pa・s~100000Pa・sとする。【選択図】なし
