Abstract:
본 발명의 점착제 조성물은 (A)아크릴계 수지; (B)이소시아네이트계 가교제; (C)카보디이미드계 가교제를 포함하여 이루어지고, 에이징 1일후와 에이징 4일 후 JIS 2107 규격에 의한 180도 박리력 차이가 100 g/25mm 이하 이고, 내열박리력이 2000 g/25mm 이하인 것을 특징으로 한다.
Abstract:
PURPOSE: An adhesive composition and an optical member using the same are provided to improve light leakage phenomenon by increasing elasticity and forming three dimensional matrixes through a reaction control. CONSTITUTION: An adhesive composition comprises acrylic resin, isocyanate based cross-linker, and a carbodiimide based cross-linking agent. The distance in which the adhesive composition is pushed away is less than 100 micro meters when adding 10 gf/mm^2 of load for 1000 seconds, and the storage modulus at 10Hz and 30 deg. Celsius is 1×10^5 - 1×10^7 Pa. The Acrylic resin includes 0.01-5 wt% of (meta)acrylate copolymer which includes monomer containing a hydroxy group. The Acrylic resin comprises 85-99 wt% of a first (meta) acrylate copolymer which includes a monomer containing less than 0.01 wt% of hydroxy group, 1-15 wt% of a second (meta)acrylate copolymer which includes a monomer containing 0.01-5 wt% of hydroxy group. The average molecular weight of the first (meta)acrylate copolymer is 1,000,000-2,000,000 g/mol, and the average molecular weight of the second (meta) acrylate copolymer is 500,000-1,500,000 g/mol.
Abstract:
PURPOSE: An adhesive composition and an optical member using the same are provided to improve a light leakage phenomenon expressed according to the size of a polarizer by enhancing elastic modulus by forming cubic matrix through the reaction control. CONSTITUTION: An adhesive composition comprises: 100 parts by weight of a (meth)acrylate copolymer including repeating units derived from a C1-20 alkyl (meth)acrylate monomer, an aromatic group-containing monomer, and a carboxyl group-containing monomer; 0.01 to 10 parts by weight of a crosslinking agent; 0.01 to 5 parts by weight of a silane coupling agent; and 0.01 to 5 parts by weight of a crosslinking catalyst, wherein the adhesive composition provides an adhesive having a gel fraction of about 85% or more as defined by equation 1: Gel fraction(%)=(A/B)*100. In equation 1, A is a mass measured after dissolving the adhesive at 23deg.C. for 48 hours using a solvent and then drying for 24 hours, and B is an initial mass.
Abstract:
A vinyl group-containing acrylic adhesive resin composition is provided to realize high initial adhesion and excellent photocurable effect and peel force after photocuring, and to obtain an adhesive tape useful for dicing or dicing die bonding. A vinyl group-containing acrylic adhesive resin composition comprises: 100 parts by weight of an adhesive acrylic binder resin comprising 20-30 parts by weight of methyl methacrylate, 10-20 parts by weight of butyl acrylate, 40-60 parts by weight of 2-ethylhexyl acrylate, 10-20 parts by weight of 2-hydroxymethyl acrylate, and 10-20 parts by weight of glycidyl methacrylate; and 3-20 parts by weight of acrylic acid or methacrylic acid. The acrylate or methacrylate is addition polymerized to the glycidyl methacrylate of the adhesive acrylic binder resin.