Abstract:
본 발명은 조성물의 성분이 비닐기를 함유한 아크릴계 점착수지 조성물, 이를 포함하는 광경화형 점착조성물 및 이를 포함하는 점착테이프에 관한 것으로, 본 발명에 의한 광경화형 점착조성물은 우수한 박리력을 갖는 아크릴계 점착수지 조성물을 포함하고 있어, 초기 점착력이 우수하고, 낮은 자외선 에너지에서도 광경화 후 우수한 박리성을 가짐으로써, 낮은 박리력이 요구되는 다이싱용 또는 다이싱 다이본딩용 점착 테이프에 유용하게 사용할 수 있다. 아크릴계 점착수지, 아크릴산, 메타크릴레이트, 부가중합, 광경화형 점착조성물, 점착 테이프
Abstract:
An unsaturated polyester adhesive resin is provided to realize excellent adhesion to a substrate film, excellent peel force and low tackiness after photocuring, and to obtain an adhesive tape useful for dicing or dicing die bonding. An unsaturated polyester adhesive resin comprises an unsaturated acid, a saturated acid and glycol, and has a vinyl group-containing binder portion. The unsaturated acid is used in an amount of 5-50 mol% based on the combined molar weight of the unsaturated acid and saturated acid. The adhesive resin preferably comprises 2-22 wt% of the unsaturated acid, 32-55 wt% of the saturated acid and 42-57 wt% of glycol. The adhesive resin has a weight average molecular weight of 100,000-400,000.
Abstract:
A photocurable composition for forming an adhesive film is provided to realize excellent pick-up property by virtue of a sufficient drop in the adhesion after UV curing, and to facilitate die bonding on a PCB or lead frame by fixing chips during dicing and easily removing the chips during pick-up. A photocurable composition for forming an adhesive film comprises: (A) 100 parts by weight of a polymer binder resin; 20-150 parts by weight of a UV-curable urethane acrylate oligomer; (C) 5-50 parts by weight of a UV-curable acrylate present in a solid phase at room temperature; (D) 0.1-10 parts by weight of a heat curing agent; and (E) 0.1-5 parts by weight of a photopolymerization initiator based on 100 parts by weight of the UV curable acrylates (B)+(C). The binder polymer resin is at least one resin selected from acrylic, polyester, urethane, silicone and natural rubber resins.