| 摘要 |
Free flowing powder composition with a particle size of 800 mu m or less, comprising (a) 100 parts by weight of a block copolymer, comprising at least one poly(predominantly monovinyl aromatic hydrocarbon) block and at least one substantially hydrogenated poly(predominantly conjugated diene) block and having a monovinyl aromatic hydrocarbon content in the range of from 10 to 60 % by weight, preferably 10 to 35 % by weight, based on total weight of block copolymer; (b) 100 to 200 and preferably from 100 to 150, parts by weight of a plasticiser; (c) 50 to 100, preferably 70 to 90, parts by weight of a resin, which is compatible with the substantially hydrogenated poly(conjugated diene) block; and optionally (d) a dusting agent in amount of from 0 to 10 % by weight and preferably 0.5 to 3 % by weight, based on total weight of composition; process for its preparation and flexible elastic sterilisable homogeneous layers derived from it.
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