| 摘要 |
An eraser composition comprising 22 41 wt % styrene-ethylene/butylene-styrene block copolymer, 5 15 wt % ethylene/propylene copolymer, 30 50 wt % calcium carbonate, 10 25 wt % factice; and 0.1 7 wt % pumice is provided. The eraser composition optionally contains up to 1 wt % titanium dioxide. The eraser composition preferably has a hardness of from 70 to 85 Shore A. |
