Broadband infrared and signature control materials and methods o

Details Broadband infrared and signature control materials and methods o Broadband infrared and signature control materials and methods o

1994-12-06

1998-09-29

Speer, Timothy

Coating processes

Optical element produced

427164, 427166, 427168, 427212, 427214, 427215, B05D 506

Patent

active

058143670

ABSTRACT:
Thin multilayer signature control films having a large differential between the indices of refraction of adjoining layers are characterized by the use as the low index layer or layers of a material having a high coefficient of extinction and a very low index of refraction. The enhanced differential between the indices of refraction results in signature control materials which, in one embodiment, may be comprised of just a substrate and a coating and, in another embodiment, may be a supported or unsupported multilayer film comprised of as few as three layers that have performance characteristics equal to or exceeding prior art films comprised of 15-30 layers. Both continuous films and pigmented liquid coating compositions for signature control are provided. Improved pigments for liquid coating compositions are comprised of appropriately coated microspheres and microballoons.

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