METHACRYLIC RESIN COMPOSITION

• Main Authors: MATSUURA, HIDEAKI, KOYAMA, TERUHISA
• Format: Patent
• Language: English; Korean
• Published: 01.04.1999
• Edition: 6
• 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

메타아크릴수지 20 내지 90 중량%와 하기 (a) 내지 (e)에서 규정되는 메타아크릴계 2층구조 중합체 1 내지 80 중량%와의 혼합물로 이루어진 메타아크릴수지 조성물. (a) 1분자중에 탄소-탄소 2중결합을 2개 이상 갖는 다관능 단량체 0.1 내지 10 중량%를 함유하는 메타 아크릴산 메틸을 주성분으로 하는 단관능 단량체를 중합하여 얻어지는 내층, (b) 메타아크릴산 메틸을 주성분으로 하는 단관능 단량체를 이 내층의 존재하에 중합하여 이루어진 외층. (c) 내층과 외층의 중량비가 1:9 내지 9:1, (d) 유리전이온도가 50℃ 내지 120℃, (e) 평균입경이 200 내지 5000Å 이 조성물은 성형가공성, 내열 변형성, 기계적 성질 및 내용제성이 뛰어나다. Methacrylic resin compositions comprising 1 to 80% by weight of two-layer methacrylic polymer particles dispersed in 20 to 99% by weight of a methacrylic resin, the methacrylic polymer particles having an average particle size of from 20 to 500nm and a glass transition temperature of from 50 to 120 DEG C and comprising an inner layer and an outer layer in a weight ratio of from 1:9 to 9:1, the inner layer comprising a copolymer of 90 to 99.9% by weight of a monofunctional monomer mainly composed of methyl methacrylate and 0.1 to 10% by weight of a polyfunctional monomer having at least two carbon-carbon double bonds per molecule, and the outer layer comprising a polymer of a monofunctional monomer mainly composed of methyl methacrylate are easily processed and are useful in forming moulded articles having good heat distortion resistance, mechanical properties and solvent resistance.