Aromatic petroleum resin for hot melt adhesive, aromatic petroleum resin composition for hot melt adhesive, and hot melt adhesive composition

摘要

PURPOSE: Provided are an aromatic petroleum resin for hot melt adhesive, aromatic petroleum resin composition for hot melt adhesive, and hot melt adhesive using the same which has excellent heating stability, heat resistance and high-temperature adhesion. CONSTITUTION: The aromatic petroleum resin has the following characteristics based on proton NMR spectrum: (1) the area proportion of aromatic hydrogen atoms is 39-43%; (2) the area proportion of olefinic double bond-based hydrogen atoms is 0.7% or less; and (3) the area proportion of hydrogen atoms derived from hydroxyl groups is 0.5% or less, and the molecular weight distribution (Mw/Mn) is 1.75 or less. Particularly, the aromatic petroleum resin has a hydroxyl number of 5 mg KOH/g or less. The aromatic petroleum resin composition comprises 100 parts by weight of the above aromatic petroleum resin and 0.03-2 parts by weight of a hindered amine compound.