| 摘要 |
PURPOSE: A hot melt adhesive resin composition is provided to have excellent adhesive strength, moisture resistance, permeability, and flexibility. CONSTITUTION: A urethane hotmelt adhesive resin composition comprises 20-30 parts by weight of polyol with a number average molecular weight of 400-6000 and 2-3 hydroxy functional groups; 3-10 parts by weight of an organic polyisocyanate; 0.6-4 parts by weight of a chain extender, 50-75 parts by weight of a solvent; 0.1 parts by weight of an antioxidant; 0.5 parts by weight of an adhesive improver; 0.05 parts by weight of a coupling agent; 0.2 parts by weight of a blocking modifier; 0.05 parts by weight of a leveling agent; and 0.1 parts by weight of a yellowing preventer. |
