Claims
- 1. A biocidal composition comprising a halopropargyl compound and a buffer, wherein the weight ratio of said halopropargyl compound to said buffer is between 50:1 to 1:100 and wherein said composition is useful for providing biocidal activity to an end-use formulation and stabilizing the end-use formulation at a pH of between 3.0 and 8.0 against degradation of said halopropargyl compound.
- 2. The biocidal composition of claim 1 wherein the halopropargyl compound is an iodopropargyl derivative selected from an iodopropargyl ester, an iodopropargyl ether, an iodopropargyl acetal, an iodopropargyl carbamate and an iodopropargyl carbonate.
- 3. The biocidal composition of claim 2 wherein the iodopropargyl carbamate has the formula: ##STR3## where R is selected from the group consisting of hydrogen, substituted and unsubstituted alkyl groups having from 1 to 20 carbon atoms, substituted and unsubstituted aryl, alkylaryl, and aralkyl groups having from 6 to 20 carbon atoms and from substituted and unsubstituted cycloalkyl and cycloalkenyl groups of 3 to 10 carbon atoms.
- 4. The composition of claim 3 wherein the buffer is selected from the group consisting of bicarbonates, carbonate esters, complex carbonate salts of organic acids, hydrogen phosphates, phosphate esters, phosphinate esters, borates, borate esters, hydrogen sulfates, sulfinates, and sulfate esters.
- 5. The composition of claim 4 wherein the buffer is selected from the group consisting of potassium bicarbonate, potassium biphthalate, potassium bisulfate, potassium dihydrogen citrate, dipotassium hydrogen citrate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium hydrogen tartrate, potassium hydrogen oxolate, potassium hydrogen maleate, potassium hydrogen succinate, potassium hydrogen glutarate, potassium hydrogen adipate, potassium tetraborate, potassium pentaborate, potassium octaborate, sodium bicarbonate, sodium biphthalate, sodium bisulfate, sodium dihydrogen citrate, disodium hydrogen citrate, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium hydrogen tartrate, sodium hydrogen oxolate, sodium hydrogen maleate, sodium hydrogen succinate, sodium hydrogen glutarate, sodium hydrogen adipate, sodium tetraborate, sodium pentaborate, sodium octaborate, complex calcium carbonate salt of octanoic acid, complex calcium carbonate salt of iso-octanoic acid, complex calcium carbonate salt of 2-ethyl hexanoic acid, complex calcium carbonate salt of hexanoic acid, 2-[2-amino-2-oxoethyl)amino]ethanesulfonic acid, N-[2-acetamido]-2-aminoethanesulfonic acid, N,N-bis[2-hydroxyethyl]-2-aminoethanesulfonic acid, 2-[bis(2-hydroxyethyl) amino] ethanesulfonic acid and mixtures thereof.
- 6. The composition of claim 5 wherein the iodopropargyl carbamate is selected from the group consisting of 3-iodo-2-propynyl propyl carbamate, 3-iodo-2-propynyl butyl carbamate, 3-iodo-2-propynyl hexyl carbamate, 3-iodo-2-propynyl cyclohexyl carbamate, 3-iodo-2-propynyl phenyl carbamate, and mixtures thereof.
- 7. The composition of claim 6 wherein the buffer is a complex calcium carbonate salt of iso-octanoic acid.
- 8. A biocidal composition comprising 3-iodo-2-propynyl butyl carbamate and a buffer, wherein the weight ratio of said 3-iodo-2-propynyl butyl carbamate to said buffer is between 50:1 to 1:100 and wherein said composition is useful for providing biocidal activity to an end-use formulation and stabilizing the end-use formulation at a pH of between 3.0 and 8.0 against degradation of said 3-iodo-2-propynyl butyl carbamate.
- 9. The biocidal composition of claim 1 wherein the composition is an organic-solvent based composition.
- 10. The biocidal composition of claim 6 wherein the composition is an organic-solvent based composition.
- 11. The biocidal composition of claim 7 wherein the composition is an organic-solvent based composition.
- 12. A method of stabilizing a biocidal formulation containing a halopropargyl compound, said formulation having an alkalinity or an acidity sufficient to cause degradation of said halopropargyl compound in the absence of added acid, base or buffer, said method comprising adding a sufficient amount of an acid, a base or a buffer to said formulation to adjust the pH of said formulation to within the range of 3.0 to 8.0.
- 13. The method of claim 12 wherein said acid, base or buffer is added in a sufficient amount to adjust the pH of said formulation to a pH in the range of 5.5 to 7.7.
- 14. The method of claim 13 wherein the halopropargyl compound is an iodopropargyl derivative selected from an iodopropargyl ester, an iodopropargyl ether, an iodopropargyl acetal, an iodopropargyl carbamate and an iodopropargyl carbonate.
- 15. The method of claim 14 wherein the iodopropargyl carbamate has the formula: ##STR4## where R is selected from the group consisting of hydrogen, substituted and unsubstituted alkyl groups having from 1 to 20 carbon atoms, substituted and unsubstituted aryl, alkylaryl, and aralkyl groups having from 6 to 20 carbon atoms and from substituted and unsubstituted cycloalkyl and cycloalkenyl groups of 3 to 10 carbon atoms.
- 16. The method of claim 15 wherein the iodopropargyl carbamate is selected from the group consisting of 3-iodo-2-propynyl propyl carbamate, 3-iodo-2-propynyl butyl carbamate, 3-iodo-2-propynyl hexyl carbamate, 3-iodo-2-propynyl cyclohexyl carbamate, 3-iodo-2-propynyl phenyl carbamate, and mixtures thereof.
- 17. An improved method of providing an end-use formulation with biocidal activity comprising adding a sufficient amount of the composition of claim 1 to said end-use formulation to impart biocidal activity to said formulation and provide said formulation with a pH within the range of 3.0 to 8.0.
- 18. The method of claim 12 wherein the biocidal formulation is an organic-solvent based composition.
- 19. The method of claim 16 wherein the biocidal formulation is an organic-solvent based composition.
- 20. The method of claim 17 wherein said composition of claim 1 and said end-use formulation are each an organic-solvent based composition.
- 21. The composition of claim 8 wherein said biocidal composition and said end-use formulation are each an organic-solvent based composition.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part application of Application Ser. No. 08/479,220 filed on Jun. 7, 1995 (now abandoned).
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2138292 |
Aug 1983 |
GBX |
Non-Patent Literature Citations (1)
Entry |
International Search Report of PCT/US96/08956 dated Nov. 4, 1996. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
479220 |
Jun 1995 |
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