[EN] CHEMICAL LIGHT PRODUCING FORMULATIONS AND DEVICES CONTAINING BRANCHED OXALATE ESTERS [FR] FORMULATIONS ET DISPOSITIFS CHIMILUMINESCENTS CONTENANT DES ESTERS DE TYPE OXALATES RAMIFIÉS
Chemical light producing formulations and devices containing branched oxalate esters
申请人:Cranor Earl
公开号:US20110084243A1
公开(公告)日:2011-04-14
Chemical light producing systems and the chemiluminescent formulations contained therein are taught which exhibit reduced hydrolysis and thereby are characterized by an inherently long shelf-life and commercial viability. By replacing the typical oxalate ester, e.g. (bis3,4,6-trichloro-2-[(pentoxy)carbonyl]phenyl}oxalate) with a branched chain oxalic acid ester represented by the general formula:
wherein the group designated as R contains from 4-15 carbons, wherein the carbon of attachment of R to the oxygen is via a primary carbon, and wherein substructure A is composed of substituents selected from the group including alkyl chains, alkyl rings, aromatic rings and combinations thereof such that R is nonlinear, water hydrolysis of the oxalate ester is retarded. This retardation of the hydrolysis changes the storage constraints of the oxalate ester.
Devices have a flexible housing with an inside chamber having a closed and open end. A first chemiluminescent fluid is disposed in a breakable container in the chamber, and a second chemiluminescent fluid is in the chamber. A tip assembly is attached to the housing and includes a nib movably disposed in the body, and a filter element may be positioned within the body to prevent passage of broken particles from the container to the nib tip. A resilient element is used to impose an outward biasing force on the nib. A porous material is disposed over an outer surface of the nib tip and securely held in place. The device is activated for use by bending the housing to break the container causing the first and second chemiluminescent fluids to mix and react, providing a chemiluminescent solution that flows to the tip assembly for dispensing onto a desired surface.