SEALANT

• Main Authors: SASAKI HIROMITSU, UEHARA YOSUKE
• Format: Patent
• Language: English; Korean
• Published: 16.08.2016
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

방향족 비닐 화합물 유래의 구조 단위로 이루어지는 중합체 블록 (a) 와, 파르네센 유래의 구조 단위 (b1) 을 1 ∼ 100 질량％ 함유하고, 파르네센 이외의 공액 디엔 유래의 구조 단위 (b2) 를 99 ∼ 0 질량％ 함유하는 중합체 블록 (b) 를 함유하고, 중합체 블록 (a) 와 중합체 블록 (b) 의 질량비 [(a)/(b)] 가 5/95 ∼ 45/55 인 블록 공중합체를 함유하는 실란트는, 성형 가공성, 유연성 및 점접착성 이 우수하고, 또한 고온 하에서도 4,000 헤르츠 근방의 고주파수 영역에 있어서의 차음성 및 제진성 (진동 감쇠 특성) 이 우수하다. A sealant including a block copolymer comprising a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound and a polymer block (b) comprising 1 to 100% by mass of a structural unit (b1) derived from farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, a mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) being 5/95 to 45/55, is excellent in molding processability, flexibility, and adhesiveness and also excellent in sound insulation properties and vibration-damping properties (vibration attenuation properties) in a high frequency region in the neighborhood of 4,000 Hz even under high temperatures.