롤 가공성, 밴버리 가공성, 내수성, 강도 특성 및 내압축영구변형 특성이 우수한 아크릴 고무 베일

• 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, 밴버리 가공성, 내수성, 강도 특성 및 내압축영구변형 특성이 우수한 아크릴 고무 베일을 제공한다. 본 발명에 따른 아크릴 고무 베일은, 카르복실기, 에폭시기 및 염소 원자로 이루어지는 군에서 선택되는 적어도 1종의 반응성기를 갖고, GPC-MALS법에 의해 측정되는 절대 분자량 및 절대 분자량 분포에 의한 중량 평균 분자량(Mw)이 1,000,000~3,500,000, 중량 평균 분자량(Mw)과 수평균 분자량(Mn)의 비(Mw/Mn)가 3.7~6.5인 아크릴 고무로 이루어지고, 메틸에틸케톤 불용해분량이 50 중량% 이하, 회분량이 0.2 중량% 이하이고 또한 회분 중의 나트륨, 마그네슘, 칼슘, 인 및 황의 합계량이 50 중량% 이상이다. The present invention provides an acrylic rubber bale which is excellent in terms of roll processability, Banbury processability, water resistance, strength characteristics and compression set resistance characteristics. An acrylic rubber bale according to the present invention is formed of an acrylic rubber which has at least one reactive group that is selected from the group consisting of a carboxyl group, an epoxy group and a chlorine atom, wherein the weight average molecular weight (Mw) is within the range of from 1,000,000 to 3,500,000 and the ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn), namely Mw/Mn is within the range of from 3.7 to 6.5, said molecular weights being obtained by means of the absolute molecular weight and the absolute molecular weight distribution as determined by a GPC-MALS method. With respect to this acrylic rubber bale, the methyl ethyl ketone insoluble fraction is 50% by weight or less; the ash content is 0.2% by weight or less; and the total amount of sodium, magnesium, calcium, phosphorus and sulfur in the ash content is 50% by weight or more.