Non-toxic chemical oxygen generating compositions
First Claim
1. In an oxygen-generating candle composition that includes a preponderant amount on a weight basis of an alkali metal chlorate or perchlorate oxygen source other than lithium perchlorate alone, together with from about 1.2-30% by weight of a metal fuel powder, selected from the group consisting of iron, cobalt and manganese, and which upon ignition and decomposition thereof will yield oxygen and residual chlorine, the improvement which comprises a non-toxic additive incorporated into the candle composition at a level of from about 0.05-10% by weight for suppression of the residual chlorine and to enhance uniform oxygen generation and evolution, said additive being an alkaline compound selected from the group consisting of compounds of the formula Ma Hb Xc Od where M=an alkali metal or alkaline earth metal, a=a number which is one or more, H=hydrogen, b=a number which is 0, or one or more, X=an element chosen from the group consisting of the elements of Group IIIA, the elements of Group IVA, the elements identified by the numbers 15 and 51 of Group VA, the elements of Group IVB, the elements of Group VB, the elements of Group VIB, and the element identified by the number 25 of Group VIIB of the Periodic Table, c=a number which is one or more, O=oxygen, and d=a number which is one or more.
5 Assignments
0 Petitions
Accused Products
Abstract
An oxygen-generating candle composition is disclosed of the type that includes an amount of an alkali metal chlorate or perchlorate oxygen source and which upon initiation and decomposition yields oxygen and residual chlorine, wherein the improvement comprises a non-toxic additive in the candle composition for suppression of the residual chlorine and to enhance uniform oxygen generation and evolution. The additive is selected from the group consisting of from about 0.05% to about 10% by weight of lithium aluminate, metaborate, tetraborate, phosphate or pyrophosphate, metasilicate or orthsilicate, or carbonate, calcium phosphate or pyrophosphate, strontium carbonate or phosphate, or sodium metasilicate or orthosilicate. A metal oxide catalyst, a metal powder fuel, and a binder or filler are also included in the composition.
27 Citations
28 Claims
- 1. In an oxygen-generating candle composition that includes a preponderant amount on a weight basis of an alkali metal chlorate or perchlorate oxygen source other than lithium perchlorate alone, together with from about 1.2-30% by weight of a metal fuel powder, selected from the group consisting of iron, cobalt and manganese, and which upon ignition and decomposition thereof will yield oxygen and residual chlorine, the improvement which comprises a non-toxic additive incorporated into the candle composition at a level of from about 0.05-10% by weight for suppression of the residual chlorine and to enhance uniform oxygen generation and evolution, said additive being an alkaline compound selected from the group consisting of compounds of the formula Ma Hb Xc Od where M=an alkali metal or alkaline earth metal, a=a number which is one or more, H=hydrogen, b=a number which is 0, or one or more, X=an element chosen from the group consisting of the elements of Group IIIA, the elements of Group IVA, the elements identified by the numbers 15 and 51 of Group VA, the elements of Group IVB, the elements of Group VB, the elements of Group VIB, and the element identified by the number 25 of Group VIIB of the Periodic Table, c=a number which is one or more, O=oxygen, and d=a number which is one or more.
- 22. In an method of generating breathable oxygen as a result of the initiation and operation of a candle composition that includes a cobalt oxide catalyzed alkali metal chlorate or perchlorate oxygen source other than lithium perchlorate alone, said oxygen source being present in a preponderant amount on a weight basis, said composition having from about 1.2-30% by weight of a metal fuel powder selected from the group consisting of iron, cobalt and manganese, the improved step of adding a non-toxic additive to the oxygen source in order to increase the decomposition temperature of the alkali metal chlorate or perchlorate to a level above the melting temperature thereof that assure steady oxygen generation, said step including introducing into the chlorate or perchlorate before initiation thereof, from about 0.05-10% by weight of an alkaline compound selected from the group consisting of compounds of the formula Ma Hb Xc Od where M=an alkali metal or alkaline earth metal, a=a number which is one or more, H=hydrogen, b=a number which is 0, or one or more, X=an element chosen from the group consisting of the elements of Group IIIA, the elements of Group IVA, the elements identified by the numbers 15 and 51 of Group VA, the elements of Group IVB, the elements of Group VB, the elements of Group VIB, and the element identified by the number 25 of Group VIIB of the Periodic Table, c=a number which is one or more, O=oxygen, and d=a number which is one or more.
Specification