Antimicrobial oxazolidine/iodopropynyl-butyl carbamate composition containing less than 0.1 wt%free formaldehyde

Abstract

This invention relates to a broad spectrum antimicrobial composition, effective against gram negative and gram positive bacteria and fungi, which comprises a synergistic composition comprising iodopropynyl butyl carbamate and a bicyclic oxazolidine containing less than 0.1% of free formaldehyde.

What is claimed is:  
     
         1 . A broad spectrum, synergistic biocidal composition comprising a clear aqueous aliphatic polyhydroxide hydrocarbon solution of a cycloaliphatic oxazolidine containing less than 0.1 wt. % free formaldehyde and between about 0.1 and about 10 wt. % IPBC.  
     
     
         2 . The composition of  claim 1  wherein said oxazolidine is a bicyclic oxazolidine.  
     
     
         3 . The composition of  claim 1  wherein said oxazolidine is oxymethylene oxazolidine.  
     
     
         4 . The composition of one of claims  1 ,  2  or  3  which is an industrial product and contains between 0.1 and 5 wt. % IPBC.  
     
     
         5 . The process of preparing the composition of  claim 1  which comprises: 
 (a) forming a uniform slurry of paraformaldehyde in a liquid selected from the group consisting of an aliphatic C 3  to C 6  diol, a glycol and phenoxyethanol;  
 (b) heating the slurry in a reactor to a temperature of from about 35 to about 60° C.;  
 (c) introducing a 0.75-5 molar excess of tris(hydroxymethyl)-aminomethane to the slurry;  
 (d) agitating the contents of the reactor for a period of from 1 to 5 hours while constantly maintaining said excess of tris(hydroxymethyl)aminomethane until completion of the reaction to form substantially pure biheterocyclic oxazolidine in a clear solution;  
 (e) at ambient temperature, adding between about 0.1 and about 10% of IPBC to the solution of (d);  
 (f) constantly agitating the contents of (e) until a second clear solution is formed and  
 recovering said second clear solution as the low formaldehyde product of the process.  
 
     
     
         6 . A personal care formulation containing 0.05 to 1.0 wt. % biocidal amount of the composition of one of claims  1 ,  2 ,  3  or  4 .  
     
     
         7 . A personal care formulation containing a biocidal amount between 0.05 and 1.0 wt. % of the composition of  claim 1 .  
     
     
         8 . The personal care formulation of  claim 7  selected from the group consisting of a hair spray, hair dye, skin lotion and hair conditioner.  
     
     
         9 . An industrial formulation selected from the group of a paint, adhesive, ink, pigment dispersion or slurry, paper pulp mixture, latex emulsion, metalworking fluid, caulk and sealant containing between about 0.05-1.0 wt. % of the composition of one of claims  1 ,  2 ,  3  or  4 .