| 摘要 |
PROBLEM TO BE SOLVED: To provide an eraser excellent in erasability and weather resistance . SOLUTION: This eraser includes 15-85 pts. wt. of a base material made of an acrylic resin (A) and 85-15 pts. wt. of a thermoplastic elastomer (B) (under the condition that the total sum of the two is 100 pts. wt.). COPYRIGHT: (C)2005,JPO&NCIPI
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