| 摘要 |
PROBLEM TO BE SOLVED: To provide an eraser which reduces the dependence on fossil resources and addresses the cyclical society, being environmentally friendly and having excellent erasing ability. SOLUTION: The eraser characteristically includes in its matrix comprising biomass plastic (excluding copolymers of 3-hydroxybutyric acid and 3-hydroxyhexane acid): biomass elastomer with crosslinking natural rubber particles dispersed in an island form; and vinyl chloride resin. COPYRIGHT: (C)2009,JPO&INPIT
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