Phenolate-containing formulation with low freezing point
AssigneeOmya AG
InventorsMatthias Buri, Patrick Schwarzentruber
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Abstract
The present invention discloses an aqueous phenolates-containing liquid formulation having a solidification point of less than or equal to −10° C. which is characterized by comprising the following components: a) 50-80% by wt. of one or more phenolates; b) 0.1-10% by wt. of at least one crystallization inhibitor; and water and optionally other components forming the balance.
Claims24
Aqueous, phenolates-containing liquid formulation having a solidification point of less than or equal to −10° C. wherein said formulation contains the following components:
- a) 50-80% by wt. of one or more phenolates;
- b) 0.1-10% by wt. of at least one crystallization inhibitor;
- and
- water and optionally other components having a biocidal effect and/or promoting the biocidal effect forming the balance.
Formulation according to one or more of the preceding claims wherein said formulation contains as the cresol salts salts of a-, m-, p-cresol, salts of isopropyl o-cresol, salts of 4-isopropyl m-cresol, halogenated cresols, in particular chlorinated cresols, and as the resorcinol salts the salt of 4-n-hexyl resorcinol.
Formulation according to one or more of the preceding claims wherein said formulation contains the phenolates in an amount of 50-75% by wt., preferably 55-70% by wt., and further preferred 60-70 or 62-67% by Wt.
Formulation according to one or more of the preceding claims wherein said formulation contains the crystallization inhibitors in an amount of 0.5-5% by wt., preferably 1-3% by wt.
Formulation according to one or more of the preceding claims said formulation containing as the crystallization inhibitor one or more aliphatic glycol compound(s), such as ethylene glycol, monopropylene glycol and/or diethylene glycol, and/or one or more aliphatic alcohol(s), such as methanol, ethanol, n-propanol, iso-propanol, isomers of butanol and/or pentanol, and/or one or more aromatic alcohol(s), such as benzyl alcohol, 2-phenylethane-1-ol, 3-phenylpropane-1-ol and/or 1-phenylpropane-2-ol.
Formulation according to one or more of the preceding claims wherein said formulation contains organometal compounds and/or quaternary ammonium compounds as the additional microbicidal agents, and/or chelating agents and/or antioxidants (oxidation stabilizers) as the substances promoting the microbicidal agent(s).
Formulation according to one or more of the preceding claims wherein dicocomethylbenzylammonium chloride and/or tributyl tin benzoate and/or N-tallow-1,3-diaminopropane are comprised as the microbicidal agents.
Formulation according to one or more of the preceding claims wherein said formulation contains NTA and/or EDTA and/or DTPA as the chelating agent, and/or 2-phosphono-1,2,4-butanetricarboxylic acid as the antioxidant, each preferably in an amount of 0.05-1% by wt. based on the formulation.
Formulation according to one or more of the preceding claims wherein said formulation contains
- a) 50-80% by wt. of at least one phenolate;
- and
- b) 20-50% by wt. of a solvent system comprising 90-99% by wt. water and 0.1-10.0% by wt. of at least one crystallization inhibitor;
- wherein a proportion of 1.0-4.9% by wt. of said formulation may be replaced by additional microbicidal agents and/or components promoting these agents.
Formulation according to one or more of the preceding claims wherein said phenolates are present in the form of the potassium salt or the potassium and sodium salts and/or the potassium and lithium salts.
Formulation according to one or more of the preceding claims wherein said phenolates dissolved in the solvent system are neutralized with an excess of 0.03-0.15 mols of alkali hydroxides, based on the phenolates.
Formulation according to one or more of the preceding claims wherein 1.03-1.15, preferably 1.05-1.10 mols of alkali hydroxides per-mol of phenolate have been used for neutralization.
Formulation according to one or more of the preceding claims wherein the crystallization inhibitors are present in an amount of 1-3% by wt. in a formulation containing 60-70% by wt. of phenolate.
Formulation according to one or more of the preceding claims wherein the phenolates are present in the formulation in an amount of 50-80% by wt., preferably 55-70% by wt., and wherein one or more aliphatic glycol compound(s) and/or glycerol and/or one or more aliphatic and/or aromatic alcohol(s) are present as the crystallization inhibitor(s) in an amount of 0.1-10% by wt., preferably 1-5% by wt., wherein the total amount of crystallization inhibitor at maximum is 10% by wt. and in each case the balance with respect to 100% by wt. is comprised by alkali in an excess of 0.03-0.15 mol/mol and water.
Aqueous suspension or dispersion of minerals and/or fillers and/or pigments and/or natural or synthetic organic binders and/or cooling lubricants containing a formulation according to one or more of the preceding claims.
Use of a formulation according to one or more of the preceding claims as a preservative agent in an aqueous suspension or dispersion of minerals and/or fillers and/or pigments and/or natural or synthetic organic binders and/or cooling lubricants.
Method for the preparation of a phenolates-containing formulation according to one or more of the preceding claims comprising placing water and a neutralizing agent in a vessel, dissolving the phenol compounds therein, and afterwards adding the crystallization inhibitor.
Dependencies are inferred from the claim text.