| 摘要 |
PROBLEM TO BE SOLVED: To provide a silicone pressure-sensitive adhesive composition that contains no organic solvent, can prevent the absorption of ultraviolet radiation or the like, the contamination on electronic/electrical components, adverse effects on human body and skin irritation caused by residual and volatile substances, can easily be removed without deforming or damaging an adherend and has appropriately adjusted adhesive strength. SOLUTION: The solventless silicone pressure-sensitive adhesive composition comprises (A) a polyorganosiloxane having at least two alkenyl group-containing organic groups in a molecule with a polymerization degree of 300-2,000, (B) a polyorganohydrosiloxane having at least three SiH groups in a molecule, (C) a polydiorganosiloxane having alkenyl groups at both terminals with a polymerization degree of 3-22, (D) a polydiorganosiloxane having SiH groups only at both terminals, (E) a polyorganosiloxane composed of a R<SP>2</SP><SB>3</SB>SiO<SB>1/2</SB>unit and an SiO<SB>2</SB>unit (wherein R<SP>2</SP>is a monovalent hydrocarbon group), and (F) a platinum-based catalyst. COPYRIGHT: (C)2009,JPO&INPIT |
