摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber-like cleaner for destaining a gardening brick, capable of destaining simply a gardening brick or the like, as if erasing penciled characters, without causing injuries in the gardening brick or the like. <P>SOLUTION: Provided is a rubber-like cleaner for a gardening brick obtained by knead molding of 5-85 wt.% of a polystyrene elastomer and 95-15 wt.% of an abrasive with Mohs' hardness of 2.0-4.0. <P>COPYRIGHT: (C)2013,JPO&INPIT |