ADDITION-CURABLE SILICONE RESIN COMPOSITION AND OPTICAL ELEMENT

• Main Authors: KOZAI TOSHIYUKI, KOBAYASHI YUKIHITO
• Format: Patent
• Language: English; Japanese
• Published: 13.08.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide an addition-curable silicone resin composition from which a cured material having high transparency, low refraction index, high intensity and excellent in product reliability is obtained.SOLUTION: An addition-curable silicone resin composition includes: (A) 0 pt.mass or more but less than 50 pts.mass of linear organopolysiloxane having a silicon atom-bonded aliphatic unsaturated group and a silicon atom-bonded CF-(CF)-(CH)group; (B) more than 50 pts.mass but 100 pts.mass or less of organopolysiloxane having the silicon atom-bonded aliphatic unsaturated group, a silicon atom-bonded CF-(CF)-(CH)group and a siloxane unit represented by SiO; (C) such an amount of an organic silicon compound having a silicon atom-bonded hydrogen atom that the molar ratio of the SiH group of a component (C) to the total aliphatic unsaturated group of the components (A) and (B) becomes 0.2≤SiH group/aliphatic unsaturated group≤5.0; and (D) a platinum group metal-based catalyst.SELECTED DRAWING: Figure 1 【課題】高透明、低屈折率かつ高強度である製品信頼性に優れた硬化物を与える付加硬化型シリコーン樹脂組成物を提供する。【解決手段】（Ａ）珪素原子結合脂肪族不飽和基及び珪素原子結合ＣＦ３−（ＣＦ２）ｍ−（ＣＨ２）ｎ−基を有する直鎖状であるオルガノポリシロキサン：０質量部以上５０質量部未満、（Ｂ）珪素原子結合脂肪族不飽和基及び珪素原子結合ＣＦ３−（ＣＦ２）ｏ−（ＣＨ２）ｐ−基を有し、かつＳｉＯ４／２で示されるシロキサン単位を有するオルガノポリシロキサン：５０質量部より多く１００質量部以下、（Ｃ）珪素原子結合水素原子を有する有機珪素化合物：（Ａ）、（Ｂ）成分の合計脂肪族不飽和基と（Ｃ）成分のＳｉＨ基とのモル比が、０．２≦ＳｉＨ基／脂肪族不飽和基≦５．０となる量、（Ｄ）白金族金属系触媒を含有するものである付加硬化型シリコーン樹脂組成物。【選択図】 図１