Abstract:
An acrylic resin is provided to ensure excellent transparency and softness, good weather resistance, and low toxicity compared with a soft polyvinylchloride, and to be applied to auto parts, housing of electric and electronic appliance, films, sheets and tubes. A method for manufacturing a transparent and soft acrylic resin comprises the steps of: polymerizing a monomer mixture including a methacrylate-based monomer, an alkyl acrylate-based monomer and a styrene-based monomer to prepare a first polymer having a refractive index of 1.49 ± 0.005 and a glass transition temperature of 10-20 °C; adding the monomer mixture to the first polymer to become a glass transition temperature of 0-10 °C and performing graft growth reaction of the added mixture; injecting the monomer mixture in the second polymer to become a glass transition temperature of 60-90 °C and performing polymerization to prepare the third polymer.
Abstract:
A graft copolymer is provided to minimize volatile organic compounds, to ensure excellent flowabillity, outer appearance, mechanical strength and thermal stability, good polymerization stability and excellent degree of grafting. A method for preparing a graft copolymer minimizing emission of volatile organic compounds comprises the steps of: polymerizing rubbery polymer latex and a graft monomer mixture in the presence of a polymerization initiator to prepare a first graft copolymer latex; injecting the balance of a graft monomer mixture in the first graft copolymer latex and at the same time, injecting a first polymerization initiator through 2-5 hours and then injecting a second polymerization initiator to perform polymerization .
Abstract:
An impact reinforcing copolymer is provided to increase chemical affinity by copolymerizing an epoxide compound to an intermediate layer and a hard part and to improve impact reinforcement of polyvinyl chloride, polycarbonate, polyethyl terephthalate and polyamide. A method for manufacturing an impact reinforcing copolymer comprises the steps of: graft-polymerizing a diene-based rubber and an aromatic vinyl-based monomer to prepare a first graft polymer; adding an epoxide compound to the first graft polymer and then polymerizing the materials to prepare a second graft polymer; and injecting alkyl(meth)acrylate in the second graft polymer and then polymerizing the materials. The thermoplastic resin composition comprises (A) thermoplastic resin 70-99 weight% and (B) the impact reinforcing copolymer 1-30 weight%.
Abstract:
본 발명은 모노머인 본 발명의 충격보강제는 디엔계 모노머 30∼45 중량% 및 알킬 아크릴레이트 55∼70 중량%가 산화방지제 존재 하에서 중합된 중합된 고무질 중합체 45∼70 중량부에 메타크릴레이트계 모노머 30∼55 중량부가 그라프트 중합되어 이루어지는 내스크래치 수지의 충격보강제에 관한 것이다. 본 발명에 따른 충격보강제를 적용한 메타크릴레이트계 수지 조성물은 투명성 및 내충격성을 향상시키면서 우수한 표면 특성을 발현한다. 고무질 중합체, 메틸메타크릴레이트, 개시제, 가교제, 분자량 조절제, 전해질, 유화제, 산화 방지제, 내충격성, 투명성