| abstract |
There is provided a crumb of a block copolymer, which is excellent in transportability and, when used for a pressure-sensitive adhesive composition, is capable of forming a pressure-sensitive adhesive composition excellent in solubility, the low-melt viscosity property, the low-odor property, and the balance among these properties. The present invention relates to a crumb of a block copolymer, comprising at least one polymer block comprising a vinyl aromatic hydrocarbon monomer unit as a primary component and at least one polymer block comprising a conjugated diene compound monomer unit as a primary component, having a weight-average molecular weight of 20,000 to 1,000,000, and having a specific surface area, a cumulative pore volume of pores having a pore radius of 1 μm to 100 μm, and an average pore radius that are in respective predetermined ranges. |