Title:
ANTI-SLIPPING AGENT AND ANTI-SLIPPING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/018914
Kind Code:
A1
Abstract:
Disclosed is an anti-slipping agent in which flat-crushed pieces are made less movable on a road surface covered with pressed snow or an icy road surface and thus well retained to achieve an improved anti-slipping effect.
Specifically disclosed is an anti-slipping agent comprising flat-crushed pieces formed by crushing a flat-crushable stone, wherein exfoliatable natural black slate that can be crushed into pieces having a thickness of 1.5 mm or less is used as the stone. The black slate contains 54-64 wt% of silicic acid, 17-25 wt% of aluminum oxide, 6-7 wt% of ferric oxide, 1.9-4 wt% of calcium oxide and 1.5-3.9 wt% of magnesium oxide. The crushed pieces are impregnated or coated with a freezing point-lowering agent.
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Inventors:
YAMAMOTO CHISATO (JP)
ONODERA HIDEKI (JP)
ONODERA HIDEKI (JP)
Application Number:
PCT/JP2010/058883
Publication Date:
February 17, 2011
Filing Date:
May 26, 2010
Export Citation:
Assignee:
KOHYU SANGYO YUGEN KAISHA (JP)
YAMAMOTO CHISATO (JP)
ONODERA HIDEKI (JP)
YAMAMOTO CHISATO (JP)
ONODERA HIDEKI (JP)
International Classes:
E01H10/00; C09K3/14; E01C11/24
Foreign References:
| JP3222408B2 | 2001-10-29 | |||
| JPH0730301B2 | 1995-04-05 | |||
| JP2002256254A | 2002-09-11 |
Attorney, Agent or Firm:
SUDA Atsushi et al. (JP)
Atsushi Suda (JP)
Atsushi Suda (JP)
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