US Patent:
20060065879, Mar 30, 2006
Inventors:
Thomas Beimel - Brookville PA, US
International Classification:
C09K 11/06
US Classification:
25230140R, 106712000, 252301160, 252301360, 25230140F, 428403000, 428404000, 428405000
Abstract:
The invention relates to a luminous composition including hydraulic cement, a polymer, limestone and micro-capsules of an alkaline earth metal aluminate encapsulated in a light-transmitting resin, light-transmitting glass or combination thereof. The invention is also directed to a method of making a luminous composition. The method includes cooling an alkaline earth metal aluminate encapsulated in a light-transmitting resin, light-transmitting glass or combination thereof to a temperature of about −250 F to about −350 F and rendering the encapsulated aluminate into a powder comprising micro-capsules of the alkaline earth metal aluminate encapsulated in the light-transmitting resin, light-transmitting glass or combination thereof, wherein the micro-capsules range in size from about 0.7 μm to about 200 μm. The method then includes combining the aluminate powder with hydraulic cement, a polymer and limestone.