Hot-melt adhesive
AssigneeSunstar Giken Kabushiki Kaisha
InventorsYoshiya Hattori, Toshimori Sakakibara
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Abstract
An improved hot-melt adhesive which comprises a styrene block copolymer resin, a tackifier and a modified polybutene which is solid at room temperature, said hot-melt adhesive having excellent durable adhesion strength, cold resistance and heat resistance with improved open time, and a tackifier composition suitable for the preparation of the hot-melt adhesive.
Claims4
A hot-melt adhesive composition which comprises a styrene block copolymer resin selected from the group consisting of block copolymer resins of styrene and butadiene and block copolymer resins of styrene and isoprene, a tackifier and a modified polybutene which is solid at room temperature and is prepared by heat-treating a polybutene in the presence of an organic peroxide, said styrene block copolymer resin and said tackifier being kneaded together in air at a temperature of about 150.degree. to 220.degree. C. prior to mixing with said modified polybutene.
Dependencies are inferred from the claim text.