High opacity, thin coat concept airport runway line-marking pain

Details High opacity, thin coat concept airport runway line-marking pain High opacity, thin coat concept airport runway line-marking pain

1991-03-15

1992-12-01

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Tractive or friction surface

106436, 427137, C09K 314

Patent

active

051677059

ABSTRACT:
Conventionally, paints which are formulated for use as markings on roads have also been used as markings on airport runways but have been found unsatisfactory since airport runway markings have special requirements. The present invention provides a super-high opacity thin coat concept airport runway markinng paint comprising 25-75% by weight of titanium dioxide in the paint, extenders such as Barium Sulphate, Laminar Talc, Calcite or Dolomite used alone or as blends thereof, binders such as Plasticized Chlorinated Rubber, Acrylated rubber, Epoxy, Polyurethane or emulsified resins and an anti-skid aggregate comprising crushed glass particles or calcined Aluminum oxide or the like. Airport runway markings need frequent maintenance re-application of paint in order to obliterate the black markings left after contact with aircraft tires. The super-high opacity paint has the advantage that it can be sprayed on at very thin film thickness thereby minimizing the tendency of the build up of thick smooth film to potentially hazardous levels.

REFERENCES:
patent: Re30463 (1980-10-01), Miller et al.
patent: 2574971 (1951-11-01), Heltzer
patent: 3005790 (1961-10-01), Wynn
patent: 3474057 (1969-10-01), de Vries
patent: 3900605 (1975-08-01), Norris, Jr.
patent: 4105808 (1978-08-01), McKenzie

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