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Fluorescent brightener in image-receiving material for silver salt diffusion transfer process - Patent 4734354 (2880 words) |
 | However, incorporation of the fluorescent brightening agent into a laminate layer of a polyethylene laminate paper is disadvantageous in that the fluorescent brightening agent is apt to decompose due to its poor heat stability during heat-extrusion for lamination. |
| Further, attempts to impart fluorescent whiteness during development procesing by the addition of the fluorescent brightening agent to a developing solution are disadvantageous since uniformity in quality of the final product cannot be maintained unless the concentration of such a fluorescent brightening agent is maintained constant throughout the developing processing. |
| When considering incorporation of a fluorescent brightening agent in an image-receiving layer of an image-receiving material, it is more effective to use an oil-soluble fluorescent brightening agent rather than a water-soluble fluorescent brightening agent, from the viewpoint of preventing the agent from running out during processing or washing with water. |
| U.S. Patent: 5124149 - Compositions and methods for biocontrol using fluorescent brighteners - June 23, 1992 (4707 words) |
| We have discovered that inhibitors of chitin synthetase, and particularly certain fluorescent brighteners, especially compounds of the stilbene type, specifically, derivatives of 4,4'-diamino-2,2'-stilbene disulfonic acid and their salts provide protection for entomopathogens from the damaging effects of exposure to UV radiation as well as decreasing the mortality time and lethal dose in the host insect. |
| It is therefore an object of the present invention to provide biocontrol compositions using fluorescent brighteners that (a) increase the pathogen persistence to UV radiation, and (b) increase its virulence in the host, thus overcoming the disadvantages described in the prior art. |
| Surprisingly, it was found that formulating entomopathogens with the addition of these fluorescent brighteners into compositions, enhanced the biological activity or virulence of the viruses that are infective for gypsy moth, alfalfa looper, fall armyworm and celery looper, up to a 1000-fold. |
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