Title:
PHOTOLUMINESCENT PLASTIC AGGREGATES
Document Type and Number:
WIPO Patent Application WO2002040421
Kind Code:
A8
Abstract:
Plastic aggregates are disclosed that exhibit long-lasting photoluminescence, typically 4-15 mm in size and containing 4-20% of a long-lasting phosphor pigment, dispersed in a crosslinked or thermoset matrix that is preferably formed by the polymerisation of an unsaturated polyester resin/styrene solution. Particularly preferred photoluminescent pigments are inorganic phosphors such as strontium aluminate supported on low density (e.g. 0.2 1.5 g/l) inorganic substrates such as a porous ceramic, silica or glass. The plastic aggregate may be spread on the surface of a cementitious substrate before cure to embed the aggregate over the surface. After cure this substrate may be polished to provide a surface with long-lasting after-glow properties.
Inventors:
ROGERS BARRY (AU)
Application Number:
PCT/AU2001/001500
Publication Date:
July 11, 2002
Filing Date:
November 20, 2001
Export Citation:
Assignee:
S L E AUSTRALIA PTY LTD (AU)
ROGERS BARRY (AU)
ROGERS BARRY (AU)
International Classes:
C04B16/04; C04B18/02; C04B41/45; C04B41/61; C09K11/02; C09K11/08; (IPC1-7): C04B16/04; C04B20/00; C04B111/80; C09K11/02; C09K11/80
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