ETHACRYLIC RESIN METHOD FOR PRODUCING METHACRYLIC RESIN METHACRYLIC RESIN COMPOSITION MOLDED BODY OPTICAL COMPONENT AND AUTOMOBILE COMPONENT

• Main Authors: YOSHIDA JUNICHI, INAGAWA YUICHIRO
• Format: Patent
• Language: English; Korean
• Published: 07.03.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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

본 발명의 목적은, 성형체의 긴 광로에서의 색조가 우수한 메타크릴계 수지 및 메타크릴계 수지 조성물을 제공하는 데에 있다. 본 발명의 메타크릴계 수지는, 주쇄에 고리 구조를 갖는 구조 단위(X)를 갖는 메타크릴계 수지로서, 유리 전이 온도(Tg)가 120℃ 초과 160℃ 이하이고, 상기 메타크릴계 수지 2.0 질량% 함유 클로로포름 용액을 분광 분석했을 때에, 여기 파장 436 nm, 슬릿 폭 2 nm에서 얻어지는 514 nm에 있어서의 발광 강도가 플루오레세인의 에탄올 용액의 농도 환산으로 30×10-10 mol/L 이하인 것을 특징으로 한다. The present disclosure is directed to provide a methacrylic resin and a methacrylic resin composition which enable production of a shaped article excellent in color tone in a long path length. A methacrylic resin of the present disclosure has a structural unit (X) including a cyclic structure in a main chain thereof. The methacrylic resin having a glass transition temperature (Tg) of higher than 120 °C and 160 °C or lower. An emission intensity at 514 nm in terms of a concentration of a solution of fluorescein in ethanol is 30 × 10-10 mol/L or less when a solution containing 2.0 mass% of the methacrylic resin in chloroform is spectroscopically analyzed using an excitation wavelength of 436 nm and a slit width of 2 nm.