POLYCARBONATE RESIN COMPOSITION FOR OPTICAL COMPONENT AND OPTICAL COMPONENT

• Main Author: TOMITA KEISUKE
• Format: Patent
• Language: English; Korean
• Published: 30.08.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

폴리카보네이트 수지 (A) 100 질량부에 대해, 폴리알킬렌글리콜 (B) 를 0.1 ∼ 4 질량부, 인계 안정제 (C) 를 0.005 ∼ 0.5 질량부 함유하고, 폴리알킬렌글리콜 (B) 는, 테트라하이드로푸란을 용매로 하고 겔 침투 크로마토그래피에 의한 폴리스티렌 환산으로 측정되는 중량 평균 분자량 (Mw) 이 400 이하인 성분의 양이 1.0 질량％ 미만이며, 또한 말단 수산기가로부터 구해지는 수평균 분자량 (Mn) 이 700 ∼ 2600 인 것을 특징으로 하는 광학 부품용 폴리카보네이트 수지 조성물. This polycarbonate resin composition for an optical component is characterized by having, relative to 100 parts by mass of a polycarbonate resin (A), 0.1 to 4 parts by mass of polyalkylene glycol (B), and 0.005 to 0.5 parts by mass of a phosphorous-based stabilizer (C), wherein the polyalkylene glycol (B) has an amount of less than 1.0% by mass of components which have a weight average molecular weight (Mw) of 400 or lower as measured in polystyrene equivalents by gel permeation chromatography using tetrahydrofuran as the solvent, and has a number average molecular weight (Mn), determined from the number of terminal hydroxyl groups, of 700 to 2,600.