Abstract:
PURPOSE: An adhesive compound with improved heat resistance, an adhesive sheet for a flexible printed circuit board and the flexible printed circuit board are provided to maintain long-term storage and to present unlead-soldering heat resistance and excellent adhesive strength with reinforcement plate. CONSTITUTION: An adhesive compound with improved heat resistance contains acrylic resin including 0.05-0.4 eq / kg of epoxy group, epoxy resin, amine curing agent and inorganic aluminum particles. The acrylic resin is made by copolymerizing epoxy group free acrylic acid monomer (i) and epoxy group contained acrylic acid monomer (iii) or copolymerizing epoxy group free acrylic acid monomer (i), acrylonitrile monomer (ii) and epoxy group contained acrylic acid monomer (iii).
Abstract:
The present invention relates to an adhesive composition for manufacturing a masking tape with non-adhesive properties at room temperature, heat adhesive properties, interpenetrating network structure forming properties by photo curing, heat-resistant properties, and transfer inhibiting properties, and to a heat-resistant masking tape for a semiconductor production process. The adhesive composition according to the present invention is characterized by comprising a heat curing agent 0.1-40 parts by weight, an energy ray-curable acrylic resin 5-30 parts by weight, photoinitiator 0.5-10 parts by weight, and inorganic particles 3-50 parts by weight based on a phenoxy resin 100 parts by weight.
Abstract:
PURPOSE: An adhesive composition for flexible circuit boards is provided to maintain long-term storage with acrylic adhesive under a quick press condition, to have excellent adhesion with flexible circuit board, and to improve weldability. CONSTITUTION: An adhesive composition for flexible circuit board comprises 4-450 parts by weight of an epoxy hardening agent and phenol hardening agent; and 5-100.0 parts by weight of a thermoplastic resin; and 100.0 parts by weight of polyurethane urea resin with an acid voalue of 5-50 mg KOH/g, which is obtained by a reaction of a urethane-based prepolymer with an isocyanate-terminated group and an amine group. An adhesive sheet(1) for attaching a flexible circuit board-reinforcing board consists of a first releasing sheet(12); an adhesive layer(11) spread on the first releasing sheet; and a second releasing sheet(12') laminated on the adhesive layer.
Abstract:
본 발명은 연성회로기판 보강판용 접착제 조성물 및 이를 이용한 접착제 시트에 관한 것으로서, 보다 상세하게는 속프레스 조건에서도 아크릴 점착제와 같이 장기 보관성을 유지하면서도 보강판과의 우수한 접착력을 가지고, 무연 납땜 리플로우 공정 온도에 대응할 수 있는 내열성이 향상된 연성회로기판 보강판용 접착제 조성물 및 이를 이용한 접착제 시트에 관한 것이다. 이를 위해 본 발명에 따른 연성회로기판 보강판용 접착제 조성물은 이소시아네이트 말단기를 가진 우레탄 고분자와 실란기를 가지는 아민 화합물의 반응을 통해 얻어진 산가가 3-30mg KOH/g, Si함량이 500-12,000ppm인 실란 변성 폴리우레탄 우레아 수지(A) 및 에폭시 화합물(B)을 혼합하여 얻어진 것을 특징으로 한다.