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권순일(Soun Il Kwan),정환경(Hwan Kyeong Jeong),최성옥(Seung Ok Choi),남기대(Ki Dae Nam) 한국유화학회 2001 한국응용과학기술학회지 Vol.18 No.2
N/A Curing reaction was carried out with the acrylic resin (ACR) [n-buty] acrylate/atyrene/2-hydroxyethyl methacrylate/acetoacetoxyethyl methacrylate (AAEM)] synthesized before and a curing agent, hexamethoxymethylmelamine (HMMM). With rotational rheometer, the effect of catalysts on curing rate of acrylic resin/melamine was examined. Among the four catalysts used, p-toluene sulfonic acid showed the highest reactivity, and the optimum amount of catalyst was 0.5 phr. It was observed that in the ACR/HMMM curing reaction, gelation point was lowered with the increasing the amount of AAEM and HMMM in the ACR.
김명수(Myeong Soo Kim),정환경(Kwan Kyeong Jeong),정노희(Noh Hee Jeong),남기대(Ki Dae Nam) 한국유화학회 2001 한국응용과학기술학회지 Vol.18 No.2
N/A Acrylic quarternary polymers were synthesized to prepare high-solid coatings. Acrylic resins were synthesized by the radical polymerization of n-butyl acrylate, methyl methacrylate, 2-hydroxyethyl methacrylate and acetoacetoxyethyl methacrylate. From the results of experiment on reaction condition to get high-solid acrylic resins with 70% solid content and viscosity of 1200cps, it was found that di-tert-amyl peroxide among the four types of initiators have lower viscosity and higher degree of conversion. The optinum initiator amount, chain transfer agent, reaction temperature and the dropping time were 5wt%, 4wt%, 150℃ and 5hrs, respectively.