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Patent Searching and Data


Title:
COLORED, ROAD SURFACE FREEZING PREVENTING AGENT AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2002309232
Kind Code:
A
Abstract:

To certainly prevent a spraying fluctuation, a mis-spraying and an excessive spraying since an amount of a spraying agent and a spraying state can be visually recognized, to realize an excellent thaw effect since the thaw effect is promoted by absorbing a solar heat and a ground heat, to pollute no environment and to corrode no metal of a vehicle.

Calcium chloride is prepared by uniformly mixing charcoal powder having a particle diameter of 0.5 mm or less with calcium oxide, adding an acid such as hydrochloric acid to the mixture and stirring it. A viscosity of calcium chloride is adjusted to an appropriate viscosity for granulating. Thereafter, calcium chloride is formed to a colored, road surface freezing preventing agent having a particle diameter of 1-5 mm, preferably about 3 mm by a granulating device such as a granulating kiln.


Inventors:
Kumagai, Toshio
Application Number:
JP2001000111282
Publication Date:
October 23, 2002
Filing Date:
April 10, 2001
Export Citation:
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Assignee:
SEIKITOKYU KOGYO CO LTD
International Classes:
E01H10/00; C09K3/00; (IPC1-7): C09K3/00; E01H10/00
Attorney, Agent or Firm:
中村 直樹