Abstract: A polycarbonate substrate is provided with an adherent, hard, abrasion and organic solvent resistant thin glass top coat by initially priming the substrate with a primer coating comprised of the photoreaction products of certain polyfunctional acrylic monomers and thereafter vapor depositing under vacuum onto the primed surface a thin glass top layer, the glass being evaporated by means of radio frequency induction heating.

Abstract: A coated polycarbonate article comprising a polycarbonate substrate having (i) a primer layer comprising a UV cured reaction product of a polyfunctional acrylic ester monomer and an organic silicon compound of the formula R.sup.4.sub.c SiX.sub.4-c wherein R.sup.4 is an organic group containing olefinic unsaturation, X is an alkoxy, acyloxy and aryloxy group, and c is an integer of from 1 to 3; and (ii) a thermoset silica filled organopolysiloxane top coating on said UV cured primer layer.A process for producing a coated polycarbonate article comprising (i) priming a polycarbonate substrate with a UV curable primer composition containing (a) a polyfunctional acrylic ester monomer, (b) an organic silicon compound of the formula R.sup.4.sub.c SiX.sub.

Abstract: A method of providing a uniform and tenaciously adhered hard inorganic glass layer on a polycarbonate substrate which comprises vaporizing the glass in vacuum and precipitating said glass on the polycarbonate substrate using radio frequency induction heating means to vaporize said glass.

Abstract: A process for preparing an ultraviolet light resistant polycarbonate article, which process comprises a surface impregnation of the article by bringing said article into contact with a composition containing (i) an acrylate, (ii) a hydroxy ether, and (iii) an ultraviolet light absorbent.

Abstract: A system for information display, such as for television, employing a panel assembly having electroluminescent properties. First and second elongated conductors are provided on opposite sides of an electroluminescent substrate, both being spaced from a ground plate conductor to define first and second transmission lines therewith. Each conductor is folded upon itself a plurality of times to define spaced, parallel, straight leg portions. Each conductor is divided into eight sections of equal length, each section in turn being divided into two parts of equal length. The adjacent ends of the two parts of each section are coupled by repeating amplifiers. A train of narrow pulses is coupled to one amplifier of the first section of each line, and a gating signal is applied simultaneously to that amplifier so that the pulses are propagated along the first section of each line to the other end where they are reflected in non-inverted form by the second amplifier.