Invention Grant
- Patent Title: Colorimetric indicator of radiation exposure
- Patent Title (中): 辐射照射的比色指标
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Application No.: US11845232Application Date: 2007-08-27
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Publication No.: US08097668B2Publication Date: 2012-01-17
- Inventor: Christopher L. Hein
- Applicant: Christopher L. Hein
- Applicant Address: NL Bergen Op Zoom
- Assignee: Sabic Innovative Plastics IP B.V.
- Current Assignee: Sabic Innovative Plastics IP B.V.
- Current Assignee Address: NL Bergen Op Zoom
- Agency: Michael Best & Friedrich LLP
- Agent Paul A. Jenny; Todd S. Hofmeister
- Main IPC: C08K5/23
- IPC: C08K5/23 ; C08K5/3447 ; C08K5/3465
Abstract:
A colorimetric composition is disclosed comprising a polycarbonate resin, a dye, and a thiopropionate. The composition undergoes an irreversible color shift to a darker color upon exposure to sunlight or UV radiation. Processes for producing and/or using such a colorimetric composition are also disclosed.
Public/Granted literature
- US20090062424A1 COLORIMETRIC INDICATOR OF RADIATION EXPOSURE Public/Granted day:2009-03-05
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