Colloidal sol antimony pentaoxide flameproofing compositions

Abstract

This disclosure deals with novel antimony oxide colloidal sols and formulations of the same containing halogens that provide a vastly improved fire-retarding quality to textiles, plastics and other materials to which the compounds are applied.

What is claimed is: 
     
       1. A flame retardant comprising .[.a.]. .Iadd.an aqueous .Iaddend.colloidal sol of Sb 2  O 5  having colloidal particle size ranging from substantially 20 Angstroms to 1/10 micron and in which an effective amount of a halogen is added. 
     
     
       2. A flame-retardant as claimed in claim 1 and in which the ratio of halogen-to-antimony lies within the range of from substantially 1-4 to 20-1. 
     
     
       3. A flame-retardant as claimed in claim 2 and in which the halogen is chlorine. 
     
     
       4. A flame-retardant as claimed in claim 3 and in which the chlorine is contained in a compound selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, and copolymers and mixtures of the same. 
     
     
       5. A flame-retardant as claimed in claim 2 and in which the halogen is bromine. 
     
     
       6. A flame retardant as claimed in claim 2 to which has been added .Iadd.to the aqueous colloidal sol .Iaddend.base sufficient to adjust the pH to the range of from substantially 1.5 to 10, the base-added sol being concentrated from the order of 2% by weight of solvents to up to 75 percent.