American Cyanamid Company

Michael M Rauhut

Arthur G Mohan

Shin-Shyong Tseng

Andrew Milo Semsel

Donald R Maulding

Robert J Manfre

Laszlo Joseph Bollyky

In chemical light devices comprising a chemi-luminescent mixture with a first fluorescer contained in a transparent or translucent container, a second fluorescer is incorporated in the walls of the container to shift at least part of the emissions from the device from the shorter wavelength emission of the first fluorescer to a longer wavelength emission of the second fluorescer. The second fluorescer has an absorption spectrum substantially overlapping the emission spectrum of the first fluorescer. The shift is usually about 20 to 100 nanometers and may be as much as 200 nanometers.

Chemical lighting device

Water-soluble sulfonated rubrenes are used as fluorescer components in water-soluble chemiluminescent mixtures and particularly in combination with a water-soluble amide of oxalic acid which reacts with hydrogen peroxide to produce chemiluminescence.

Sulfonated rubrene and aqueous chemiluminescent compositions containing

Quaternary salts of N,N'-bis(morpholinoalkyl)-N,N'-bis(trifluoromethylsulfonyl)oxamides and of N,N'-bis(pyridylalkyl)-N,N'-bis(trifluoromethylsulfonyl)oxamides are useful for generation of chemiluminescence by reaction with hydrogen peroxide in aqueous solvent.

Aqueous chemiluminescent systems

This invention relates to a chemiluminescent lighting system of practical value and superior properties, having good storage stability.

Superior oxalate ester chemical lighting system

An improved single-pot process for synthesis of 3,5,6-trichlorosalicylic acid and esters thereof is described. Salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol to make the ester.

Processes for preparing 3,5,6-trichlorosalicylic acid and esters thereof

There is provided a process for preparing amides which comprises reacting an amine, or an amide, and an acid halide, or anhydride, in suitable molecular proportions, in an inert organic diluent, in the presence of an effective amount of a molecular sieve, until the reaction is completed, separating the molecular sieve, and recovering the amide from the organic mother liquor.

Process for preparing amides by reaction in presence of molecular sieve

N,N'-bis(trifluoromethylsulfonyl)oxamides are described with a number of variations by substitution at the amido nitrogen atoms. These compounds when used in chemiluminescent formulations will furnish superior light intensity and quantum efficiency. Preparation of compounds and their use for chemiluminescence are described.

N,N-Bis(trifluoromethylsulfonyl)oxamides and chemiluminescent

Method for improving the storage stability of oxalic ester chemiluminescent light system components by the addition of certain additive compounds to either the oxalic or hydrogen peroxide component or both.

Stabilization of hydrogen peroxide solutions

Novel, high light capacity chemiluminescent systems are disclosed. The high capacity is produced by adding a small amount of a polymer selected from the class consisting of: (1) homopolymers and copolymers of poly(alkylene oxides); (2) homopolymers and copolymers of poly(vinyl alkyl esters) and poly(vinyl alkyl ethers) with the optional inclusion of minor amounts of alkylenes and styrenes in said copolymers; (3) 1:1 alternating copolymers of maleic anhydride with alkylenes and styrenes; (4) cellulose esters and mixed cellulose esters of 2-, 3- and 4-carbon acids and mixtures of said esters with the poly(alkylene oxides), to a chemiluminescent system containing a bisaryloxylate, an organic fluorescer a peroxide, and an organic solvent.

Polymers in oxalate chemiluminescent systems

Treatment of plastic or metal containers for chemiluminescent light packages by contacting with a chlorosilane, whereby storage stability, and shelf life of fabricated chemiluminescent devices is increased.

Chemiluminescent device having longer shelf life

Method for improving the storage stability of oxalic ester chemiluminescent light system components by the addition of certain additive compounds to either the oxalic ester component or the hydrogen peroxide component or both.

An automatic device for providing chemiluminescent light from a chemical reaction of suitable compounds in the presence of a fluorescent compound, said device being an emergency source of illumination upon failure of public utility service.

Growing community of inventors

Bridgewater, NJ, United States of America

Michael M Rauhut