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정동진(Chung DongJin),박형진(Park HyongJin),김성래(Kim SungRae),함현식(Hahm HyunSik),박홍수(Park HongSoo),김성길(Kim SeongKil) 한국유화학회 2002 한국응용과학기술학회지 Vol.20 No.1
Environmental friendly acrylics/urea high-solid paints (BEHCU) were prepared through the curing reaction of acrylics resin(BEHC) containing 70wt% of solids content and butylated urea curing agent. BEHC was synthesized by addition copolymerization of caprolactone acrylate(CLA), 2-hydroxypropyl methacrylate(2-HPMA), ethyl methacrylate, and n-butyl acrylate. The addition polymerization of these monomers, especially including flexible CLA monomer and 2-HPMA monomer with OH funtional group, under appropriate reaction conditions resulted in polymers with controlled glass transition temperature(Tg) and crosslinking density. The molecular weight(Mw) of these polymers(BEHCs) was 2940{sim}3240 and polydispersity (Mw/Mn) was in the range of 1.61{sim}1.72. The viscosity and the molecular weight of these acrylic resins increased with increasing Tg. The coated films were prepared using curing reaction between BEHC resin and butylated urea curing agent at 100^{circ}C for 30 minutes. Our experimental resulted showed that enhancement of the coating properties such as adhesion, flexibility, impact resistance, water resistance, and abrasion resistance could be expected through introducing CLA component in acrylic resin for the high-solid content acrylics/urea coatings.