메타크릴계 수지, 메타크릴계 수지 조성물, 필름, 제조 방법

• Main Authors: TADA YUTAKA, YONEMURA MASAMI, KURIHARA YUMIKA, KOBAYASHI NOBUHIRO, MURAKAMI FUMIKI
• Format: Patent
• Language: Korean
• Published: 29.06.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

본 발명은, 메타크릴산에스테르 단량체 단위 (A): 50∼97 질량%와, 주쇄에 고리 구조를 갖는 구조 단위 (B): 3∼30 질량%와, 메타크릴산에스테르 단량체와 공중합 가능한 그 밖의 비닐계 단량체 단위 (C): 0∼20 질량%를 포함하는 메타크릴계 수지로서, 하기 조건 (1), (2)를 만족하는 메타크릴계 수지를 함유하는 것을 특징으로 하는 메타크릴계 수지 조성물 및 필름을 제공하는 것을 목적으로 한다. (1) GPC로 측정한 중량 평균 분자량이 6.5만∼30만이다. (2) GC/MS를 이용하여 구한 특정 성분의 합계 함유량이 0.01∼0.40 질량%이다. Provided are a methacrylic resin composition and a film containing a methacrylic resin that includes: 50 mass% to 97 mass% of a methacrylic acid ester monomer unit (A); 3 mass% to 30 mass% of a structural unit (B) having a cyclic structure-containing main chain; and 0 mass% to 20 mass% of another vinyl monomer unit (C) that is copolymerizable with a methacrylic acid ester monomer. The methacrylic resin satisfies the following conditions (1) and (2): (1) the methacrylic resin has a weight average molecular weight of 65,000 to 300,000 as measured by GPC; and (2) the total content of specific components is 0.01 mass% to 0.40 mass% as determined by GC/MS.