A Study on Synthesis of Acrylic Pressure Sensitive Adhesive for Polarizer Film by Solution Polymerization

용액중합에 의한 편광필름용 아크릴 점착제의 합성에 관한 연구

  • 임창혁 (애경 중앙연구소) ;
  • 정영재 (삼양그룹 식품연구소) ;
  • 조을룡 (한국기술교육대학교 응용화학공학과)
  • Published : 2009.06.30

Abstract

The solution polymerization was conducted to synthesize pressure sensitive adhesive for polarizer film using acrylic monomers. 2-Ethylhexyl acrylate, butyl acrylate, acrylic acid were used as acrylic monomers, benzoyl peroxide as initiator, ethyl acetate as solvent. The ratio of monomers was 2-ethylhexyl acrylate: butyl acrylate: acrylic acid = 25:50:3.6 reflecting $-40^{\circ}C$ of glass transition temperature in the pressure sensitive adhesive. The amount of initiator was determined as 0.09% to monomer considering wetting power and initial tackiness. The ratio of monomer to solvent was determined as 1:1.7 considering wetting power and transmissivity. The transmissivity of pressure sensitive adhesive increased with decreasing both viscosity and molecular weight due to reducing of refractive index by low entanglement between molecules. In the measurement of pot life, it was found that the storage stability was good at 1:1.7 of monomer: solvent without large change of viscosity during 200 min.

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