Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Application of Acrylic Resins Containing Acetoacetoxy Group and 80% Solid Contents to High-Solid Coatings

아세토아세톡시기 함유 80% 고형분인 아크릴수지의 하이솔리드 도료에의 적용

  • Park, Hong-Soo (Department of Chemical Engineering, Myongji University) ;
  • Hong, Seok-Young (Department of Chemical Engineering, Myongji University) ;
  • Kim, Song-Hyoung (Department of Chemical Engineering, Myongji University) ;
  • Yoo, Gyu-Yeol (Department of Chemical Engineering, Myongji University) ;
  • Ahn, Sung-Hwan (Department of Chemical Engineering, Myongji University) ;
  • Hahm, Hyun-Sik (Department of Chemical Engineering, Myongji University)
  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 홍석영 (명지대학교 공과대학 화학공학과) ;
  • 김송형 (명지대학교 공과대학 화학공학과) ;
  • 유규열 (명지대학교 공과대학 화학공학과) ;
  • 안성환 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과)
  • Published : 2006.12.31
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Abstract

In order to prepare high-solid coatings, first acrylic resins (HSAs) which contain 80% solid were synthesized, and then the prepared resins were cured with isocyanate at room temperature. In the synthesis of HSAs, viscosity, number average molecular weight $(M_n)$ and conversion were $1372{\sim}2700$ cps, $1520{\sim}1650$ and $83{\sim}87%$, respectively. Among the four kinds of initiators used, tert-amylperoxy-2-ethyl hexanoate was the most proper one in the synthesis of HSAs. With increasing $T_g$ values, viscosity increased rapidly and molecular weight increased slowly. As a result of the examination of coated films, it was found that $60^{\circ}$ specular gloss, impact resistance, heat resistance and cross-hatch adhesion were good, and pencil hardness, drying time and pot life were poor.

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References

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