Antimicrobial oxazolidine/iodopropynyl-butyl carbamate composition containing less than 0.1wt% free formaldehyde
AssigneeISP Investments Inc.
InventorsJohn J. Merianos, Paul Garelick, Susan Lindstrom, Xianbin Liu, Karen Winkowski
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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 hydroxymethyl oxazolidine containing less than 0.1% of free formaldehyde.
Claims11
A broad spectrum, synergistic biocidal composition comprising a mixture of a biocidal cyclic hydroxymethyl oxazolidine having the formula
- containing less than 0.1 wt. % free formaldehyde and between about 0.1 and about 10 wt. % of iodopropynyl butylcarbamate in an aqueous solution of a polyhydroxide of a C3 to C6 aliphatic hydrocarbon, a phenoxyethanol or a mixture thereof.
A broad spectrum, synergistic biocidal composition comprising a mixture of a biocidal cyclic hydroxymethyl oxazolidine having the formula
- containing less than 0.1 wt. % free formaldehyde and between 0.1 and about 10 wt. % of iodopropynyl butylcarbamate in an aqueous solution of a compound selected from the group consisting of a C3 to C6 diol, phenoxyethanol optionally alkoxylated with a C2 to C3 alkoxyl group, polyethylene glycol and mixtures thereof.
A process which comprises:
- (a) forming a uniform slurry of paraformaldehyde in a liquid selected from the group consisting of an aqueous solution of a polyhydroxide of a C3 to C6 hydrocarbon, phenoxyethanol, ethoxylated or propoxylated phenoxyethanol, polyethylene glycol, polypropylene glycol or a mixture thereof;
- (b) heating the slurry to a temperature of from about 35 to about 60° C.;
- (c) introducing a 0.75 to 5 molar excess of tris(hydroxymethyl)-aminomethane into said slurry;
- (d) agitating the mixture of (c) while constantly maintaining said excess of tris(hydoroxymethyl)aminomethane until completion of the reaction indicated by the formation of the substantially pure cyclic hydroxymethyl oxazolidine in a clear solution;
- (e) adding between about 0.1 and about 10 wt. % of iodopropynyl butylcarbamate, based on said oxazolidine, to the product of step (d);
- (f) constantly agitating the contents of (e) until a second clear solution is formed and
- recovering the solution of (f) as a solution of composition containing less than 0.1 wt. % free formaldehyde, iodopropynyl butylcarbamate and cyclic hydroxymethyl oxazolidione having the formula
Dependencies are inferred from the claim text.