Alkali-dispersed hot-melt pressure-sensitive adhesive composition, method for producing the same, method for attaching a label, and container

摘要

an alkali dispersible-type hot-melt adhesive composition of the invention, which can be manually peeled from a base material of a container such as a PET bottle together with a pasted label without residual adhesive and readily removed from the base material using a hot aqueous alkaline solution together with a pasted label without residual adhesive and is suitably used as an adhesive for a label in PET bottle recycling, comprises (A) a thermoplastic elastomer, (B) a rosin tackifier having an acid value of 100 mgKOH/g or more and 300 mgKOH/g or less, (C) a terpene phenol resin and/or polybutene, (D) synthetic oil, and (E) polypropylene wax to which maleic anhydride is graft polymerized.