롤 가공성, 강도 특성 및 내수성이 우수한 아크릴 고무

• Main Authors: MASUDA HIROFUMI, KAWANAKA TAKAFUMI
• Format: Patent
• Language: Korean
• Published: 10.02.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

롤 가공성, 강도 특성 및 내수성이 우수한 아크릴 고무를 제공한다. 본 발명에 따른 아크릴 고무는, (메트)아크릴산에스테르를 주성분으로 하고, 디메틸포름아미드계 용매를 전개 용매로 하여 GPC-MALS법에 의해 측정되는 절대 분자량 및 절대 분자량 분포에 의한 중량 평균 분자량(Mw)이 100만 이상이고 중량 평균 분자량(Mw)과 수평균 분자량(Mn)의 비(Mw/Mn)가 3.4 이상이며, 회분량이 0.4 중량% 이하 또한 회분 중의 나트륨, 마그네슘, 칼슘, 인 및 황의 합계량이 80 중량% 이상이다. Provided is an acrylic rubber having excellent roll processability, strength properties and water resistance. An acrylic rubber according to the present invention contains a (meth)acrylic acid ester as a main component; the weight-average molecular weight (Mw) of the acrylic rubber, based on the absolute molecular weight and the absolute molecular weight distribution measured by the GPC-MALS method using a dimethylformamide solvent as a developing solvent, is 1,000,000 or more, and the ratio (Mw/Mn) of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn) is 3.4 or more; and the acrylic rubber has an ash content of 0.4 weight% or less, and in addition, the total amount of sodium, magnesium, calcium, phosphorus and sulfur in the ash content is 80 weight% or more.