OPTICAL MATERIAL AND MONOMER

• Main Authors: TANAKA YOSHITO, SHIOYA YUKO, KAWABE TAKUMA
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide an optical material which has heat resistance better than the prior art in addition to flexibility and low transmission loss.SOLUTION: The optical material comprises a core and a cladding. The core comprises a polymer (A) comprising a structural unit derived from a monomer (a) represented by general formula: CH=CXCOOZ, where X is F or CF, and Z is a C1-5 alkyl group. The cladding comprises a polymer (B) comprising a tetrafluoroethylene unit and a hexafluoropropylene unit.SELECTED DRAWING: None 【課題】可撓性及び低伝送損失を有しており、しかも、従来よりも優れた耐熱性を有する光学材料を提供する。【解決手段】コアとクラッドとを含む光学材料であって、上記コアは、一般式：ＣＨ２＝ＣＸＣＯＯＺ（式中、ＸはＦ又はＣＦ３、Ｚは炭素数１〜５のアルキル基）で示される単量体（ａ）に由来する構造単位を含むポリマー（Ａ）を含み、上記クラッドは、テトラフルオロエチレン単位及びヘキサフルオロプロピレン単位を含むポリマー（Ｂ）を含むことを特徴とする光学材料。【選択図】 なし