Title:
RADIATION EXPOSURE HISTORY INDICATOR
Document Type and Number:
WIPO Patent Application WO/2005/045471
Kind Code:
A1
Abstract:
A radiation exposure history indicator sheet which comprises a base material sheet and, provided on at least a part of the surface thereof, a color change layer comprising a polymer compound having at least one group selected from a halogen group and an acetal group, and a hydroxyl group, a coloring electron donating organic compound, an organic compound forming an active species coloring said electron donating organic compound by a radiation, and a radiation absorbing agent and/or a radiation phosphor agent.
Inventors:
NIWA YUKIYO (JP)
Application Number:
PCT/JP2004/016784
Publication Date:
May 19, 2005
Filing Date:
November 05, 2004
Export Citation:
Assignee:
NICHU GIKEN KOGYO KK (JP)
NIWA YUKIYO (JP)
NIWA YUKIYO (JP)
International Classes:
C09D129/14; C09K11/00; C09K11/58; C09K11/61; C09K11/67; C09K11/68; C09K11/77; G01T1/04; G21K4/00; (IPC1-7): G01T1/04; C09K11/00; C09D129/14
Domestic Patent References:
| WO2003021276A1 | 2003-03-13 |
Foreign References:
| JPH01272930A | 1989-10-31 | |||
| JP2000346946A | 2000-12-15 | |||
| JP2001242249A | 2001-09-07 |
Attorney, Agent or Firm:
Komiya, Yoshio (7-14 Kudanminami 3-chom, Chiyoda-ku Tokyo, JP)
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