| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an eraser which can display especially outstanding erasing performance not only in case of an eraser made of a vinyl chloride resin but also in case of an eraser made of a thermoplastic elastomer which has a lower erasing ratio than that of the eraser made of the vinyl chloride resin. <P>SOLUTION: The eraser comprises a compound composition and includes a mixture of a glycerine fatty acid ester of ≤65°C melting point and/or pentaerythritol fatty acid ester, rosin and/or modified rosin chosen from rosin glycerol ester. Preferably the mixing ratio of the mixture comprising the glycerine fatty acid ester of ≤65°C melting point and/or pentaerythritol fatty acid ester and rosin and/or modified rosin such as rosin glycerine ester is within a range between 25:1 and 1:2 expressed by a mass ratio. <P>COPYRIGHT: (C)2012,JPO&INPIT |
