Coated transparencies and transparent laminates incorporating a

Details Coated transparencies and transparent laminates incorporating a Coated transparencies and transparent laminates incorporating a

1998-01-30

2000-07-25

Niland, Patrick D.

Coating processes

Roller applicator utilized

4284237, 4284242, 4284244, 4284256, B32B 2700, B32B 2740

Patent

active

060934514

ABSTRACT:
The present invention is embodied in a polyurethane composition suitable for coating, casting or laminating, which incorporates a prescribed additive selected to increase the composition's electrical conductivity without adversely affecting the composition's transparency and percent haze and without adversely affecting its adhesion to an underlying substrate or its environmental durability, especially with regard to humidity resistance. The prescribed additive is an ionizable metal salt of a perfluoroalkylsulfonimide, in a weight percent of 0.5 to 5.0, with the metal being an alkali metal and the preferred perfluoroalkylsulfonimide being trifluoromethanesulfonimide. The most preferred salt is lithium trifluoromethanesulfonimide. The preferred polyurethanes include both aliphatic polyetherurethanes and aliphatic polyesterurethanes. Use of the additive enhances the composition's electrical conductivity by at least about two orders of magnitude, thereby minimizing the risk of a static charge building to a point where a shock hazard is created or the polyurethane coating or laminate is damaged by a rapid discharge of electrical current. The composition is particularly useful in an aircraft window or transparency, where it can be used as a coating or laminated film overlaying a transparent conductive coating.

REFERENCES:
patent: 4617325 (1986-10-01), Knobel et al.
patent: 4618630 (1986-10-01), Knobel et al.
patent: 4806571 (1989-02-01), Knobel et al.
patent: 4912142 (1990-03-01), Vermeulen et al.
patent: 4914150 (1990-04-01), Prier
patent: 4931486 (1990-06-01), Myers
patent: 4939204 (1990-07-01), Efford
patent: 5554474 (1996-09-01), Vreeland et al.
patent: 5567740 (1996-10-01), Free
patent: 5585038 (1996-12-01), Kirmanen et al.
patent: 5585040 (1996-12-01), Kirmanen et al.
patent: 5639847 (1997-06-01), Chiang et al.
patent: 5825526 (1998-10-01), Bommarito et al.
patent: 5912093 (1999-06-01), Wen et al.
patent: 5939188 (1999-08-01), Moncur et al.

Affiliated with

Also associated with

Rating

Coated transparencies and transparent laminates incorporating a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coated transparencies and transparent laminates incorporating a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coated transparencies and transparent laminates incorporating a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1334983