Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1998-01-06
1999-12-21
Szekely, Peter A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523400, 523457, 523460, 524403, 524408, 524413, 524436, 524437, 25230136, 2523014R, C09K 1102, C09K 1108, C09K 322, C09L 6300
Patent
active
060050241
ABSTRACT:
The present invention pertains to novel durable, tough, transparent, luminescent overlay compositions, useful for highlighting and/or illuminating and preserving surfaces and markings thereupon, such as roadways/highways, pedestrian passageways, airport runways, traffic control surface markings on travelways such as those listed above, traffic control devices/signs, structures, and articles. The clear compositions contain a moisture sensitive luminescent substance (for example, a phosphorescent substance having increased brightness and longer lasting afterglow) and an epoxy resin which imparts moisture stability to the luminescent substance, and durability and longer life to the underlying markings, surface area, structure or article. The clear transparent compositions can be applied as an overlay to existing surface area markings, or to unmarked surface areas themselves, or to structures or articles without obscuring the original appearance or color of the marking/surface/structure/article, to cover and/or protect the marking/surface/structure/article for an extended period of time, while providing indoor and outdoor luminescence on the marking/surface/structure/article in dark conditions for increased safety. The overlay compositions provide these benefits in an environmentally friendly manner because the compositions do not contaminate the surrounding environment with any organic hydrocarbon products via vaporization or runoffs, and in addition, may decrease the necessity to illuminate surface markings by energy-consuming overhead electrical fixtures.
REFERENCES:
patent: 4208300 (1980-06-01), Gravisse
patent: 4522861 (1985-06-01), Dunsworth
patent: 5395673 (1995-03-01), Hunt
patent: 5424006 (1995-06-01), Murayama et al.
patent: 5474194 (1995-12-01), Heilman et al.
patent: 5686022 (1997-11-01), Murayama et al.
Anders Bruce
Anders Irving
LandOfFree
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