Articles with porous particles for security purposes
First Claim
1. An article that comprises one or more porous particles whereineach porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and at least first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase,and each porous particle further comprising a first marker material that is present within only the volume of the first discrete pores, and a second marker material that is present within only the volume of the second discrete pores, which first and second marker materials are detectably different the porous particle having a mode particle size of at least 2 μ
- m and up to and including 75 μ
m.
14 Assignments
0 Petitions
Accused Products
Abstract
An article comprises one or more porous particles. Each porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase. The porous particle further comprises a first marker material present in the first discrete pores, and a second marker material that is detectably different from the first marker material and is present within the second discrete pores. The marker materials can provide a means for identifying documents, clothing, or other articles as genuine, and providing a detectable security system.
17 Citations
18 Claims
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1. An article that comprises one or more porous particles wherein
each porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and at least first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase, and each porous particle further comprising a first marker material that is present within only the volume of the first discrete pores, and a second marker material that is present within only the volume of the second discrete pores, which first and second marker materials are detectably different the porous particle having a mode particle size of at least 2 μ - m and up to and including 75 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- m and up to and including 75 μ
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16. A varnish or ink comprising one or more porous particles, wherein
each porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and at least first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase, and each porous particles further comprising a first marking material that is present within only the volume of the first discrete pores, and a second marking material that is present within only the volume of the second discrete pores, which first and second marker materials are detectably different the porous particle having a mode particle size of at least 2 μ - m and up to and including 75 μ
m.
- m and up to and including 75 μ
-
17. A formed polymer or glass article that comprises one or more porous particles, wherein
each porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and at least first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase, and each porous particle further comprises a first marking material that is present within only the volume of the first discrete pores, and a second marking material that is present within only the volume of the second discrete pores, which first and second marker materials are detectably different the porous particle having a mode particle size of at least 2 μ - m and up to and including 75 μ
m.
- m and up to and including 75 μ
-
18. A system of detection comprising:
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a detectable composition comprising one or more porous particles, wherein each porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase, each porous particle further comprises a first marking material that is present within only the volume of the first discrete pores, and a second marking material that is present within only the volume of the second discrete pores, which first and second marker materials are detectably different, and an instrument for detecting one or both of the first and second markers in the porous particles the porous particle having a mode particle size of at least 2 μ
m and up to and including 75 μ
m.
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Specification