Accession Number:

AD0630908

Title:

SYNTHESIS OF CHROMOTROPIC COLORANTS

Descriptive Note:

Technical rept. Apr 64-Apr 65,

Corporate Author:

AMERICAN CYANAMID CO BOUND BROOK NJ

Report Date:

1966-02-01

Pagination or Media Count:

114.0

Abstract:

In a study of photochromic colorants potentially useful for a chameleon type camouflage system, a number of metal dithizonates were synthetically modified by introduction or groups in the ortho, meta and para positions of both phenyl rings of dithizone. The resulting complexes were tested for spectral, photochromic and lightfastness properties. While spectral changes and increases in both solubility and lightfastness were affected by some ortho substituents, the photochromic properties photostationary conversion and thermal return rate were only slightly affected by substitution. The complexes of mercury exhibit the best all-round performance although some zinc complexes approach the performance of mercury. The complexes of palladium exhibit potentially useful spectral and photochromic behavior that is quite different from the mercury type complexes and more application research is recommended regarding the incorporation of these palladium complexes in textile fibers. Fiber reactivity on nylon has been introduced into the mercury dithizonate system via a dichlorotriazinyl reactive group. This compound exhibited photochromic properties when reacted with nylon.

Subject Categories:

  • Organic Chemistry
  • Radiation and Nuclear Chemistry
  • Coatings, Colorants and Finishes
  • Military Operations, Strategy and Tactics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE