Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Reexamination Certificate
2001-11-26
2003-11-25
Delcotto, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
C510S365000, C510S366000, C510S426000, C510S433000, C510S499000, C134S042000
Reexamination Certificate
active
06653273
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to adhesive compositions and cleaning compositions, and more specifically, to a wetting agent/surfactant that enhances the cleaning efficacy of metal and concrete cleaning compositions and the adhesion efficacy of adhesive compositions.
BACKGROUND OF THE INVENTION
Piperazine salts, such as the aminoethylpiperazine salt of diphenyl ether disulfonic acid, are known in the prior art. For example, U.S. Pat. No. 5,262,535 discloses that these salts are useful as cleaning agents for such articles as plastics and vinyl. Likewise, certain 2-piperazinones (which contain keto-substitution on the ring) are disclosed in compositions containing an alkali metal, alkaline earth metal, or ammonium salt of alkylated diphenyl oxide sulfonate as a surfactant, alone or in combination with a nonionic surfactant that may contain a mixture of ethoxylated and propoxylated alcohol, as taught in U.S. Pat. No. 5,196,146. The '146 patent teaches that the compositions disclosed therein are useful in cleaning grease and oil from metal, plastic, glass, and other surfaces. However, the present inventors have found that the 2-piperazinones disclosed in the '146 patent do not react, in accordance with the preparation process of that patent, with the diphenyl oxide sulfonate surfactant disclosed therein to provide the corresponding piperazinone salt of diphenyl ether disulfonic acid.
There is an need in the marketplace for additives that are useful in enhancing the bonding efficacy of adhesives, and in improving the cleaning efficacy of hard surface cleaners, such as concrete cleaners. The present invention provides one solution to these needs.
SUMMARY OF THE INVENTION
In one aspect, the present invention relates to a concrete-forming composition comprising:
(a) a base component selected from the group consisting of cement, sand, silica, and combinations thereof,
(b) a carrier selected from the group consisting of water, organic liquids, and combinations thereof, and
(c) a wetting agent, in an amount of between about 0.01% and about 25% by weight based upon the weight of the composition, selected from the group consisting of piperazine-substituted organosulfonates, piperazinone-substituted organosulfonates, and combinations thereof.
In another aspect, the present invention relates to an adhesive or paint composition comprising:
(a) a base polymer selected from the group consisting of acrylic resins, methacrylic resins, alkyd resins, styrene-butadiene resins, latex resins, and combinations thereof,
(b) a wetting/leveling agent selected from the group consisting of piperazine-substituted organosulfonates, piperazinone-substituted organosulfonates, and combinations thereof, and
(c) a surfactant selected from the group consisting of alcohol alkoxylates, organic and inorganic salts of polycarboxylated alcohol alkoxylates, and combinations thereof, wherein the amount of component (a) is between about 20 and about 75 weight percent, the amount of component (b) is between about 0.01 and about 25 (advantageously between about 0.015 and about 10) weight percent, and the amount of component (c) is between about 10 and about 75 weight percent, all weight percents being based upon the total weight of said adhesive or paint composition.
In another aspect, the present invention relates to a cleaning composition comprising:
(a) at least one additive selected from the group consisting of detergents, corrosion inhibitors, organic and aqueous carriers, and combinations thereof,
(b) a wetting/cleaning agent selected from the group consisting of piperazine-substituted organosulfonates, piperazinone-substituted organosulfonates, and combinations thereof, and
(c) a surfactant selected from the group consisting of alcohol alkoxylates, organic and inorganic salts of polycarboxylated alcohol alkoxylates, and combinations thereof, wherein the amount of component (a) is between about 20 and about 95 weight percent, the amount of component (b) is between about 0.01 and about 25 (advantageously between about 0.015 and about 10) weight percent, and the amount of component (c) is between about 10 and about 75 weight percent, all weight percents being based upon the total weight of said cleaning composition.
In yet another aspect, the present invention relates to a method of enhancing the bonding efficacy to a porous substrate of an adhesive or paint composition comprising a polymer or polymerizable monomer which comprises admixing with said composition, prior to curing said composition on said substrate, a bonding-enhancing effective amount (preferably between about 0.001% and about 20%, based upon the weight of the composition) of a surfactant selected from the group consisting of piperazine-substituted organosulfonates, piperazinone-substituted organosulfonates, and combinations thereof.
In still another aspect, the present invention relates to a method for cleaning a porous surface (such as asphalt or concrete) which comprises contacting the porous surface with a cleaning-effective amount (preferably between about 0.001% and about 20%, based upon the weight of the composition) of a surfactant selected from the group consisting of piperazine-substituted organosulfonates, piperazinone-substituted organosulfonates, and combinations thereof.
These and other aspects will become apparent upon reading the following detailed description of the invention.
DETAILED DESCRIPTION OF THE INVENTION
It has now been surprisingly found in accordance with the present invention that the use of a surfactant selected from the group consisting of piperazine-substituted organosulfonates, piperazinone-substituted organosulfonates, and combinations thereof, in accordance with the present invention enhances the cleaning efficacy of hard surface cleaning compositions (such as metal and concrete cleaning compositions), and also enhances the adhesion efficacy, onto porous substrates, of adhesive compositions into which this surfactant is incorporated. Without wishing to be bound by any particular theory, it is believed that this cleaning and adhesion-promoting efficacy is attributable, at least in part, to the low surface tension and interfacial tension associated with these surfactants, which, in turn, imparts good wetting characteristics to the adhesive- or cleaning-composition containing the surfactant.
In another surprising aspect of the present invention, the use of the above-described surfactant in a concrete-forming formulation advantageously reduces the amount of voids in the subsequently-formed concrete, thereby facilitating the production of denser, stronger concrete. Conversely, the concrete forming formulation can be suitably processed in a manner to provide a decreased density with uniform small-sized voids, if desired by the incorporation of a specific surfactant such as that commercially available as POLY-TERGENT SL-62 surfactant, if desired.
The piperazine-substituted and piperazinone-substituted organosulfonate surfactant/wetting agents employed in the present invention have a low interfacial tension and a low critical micelle concentration (“CMC”). These surfactants are suitable for use in a variety of applications, including, for example, in the cleaning of porous and hard surfaces, including, but not limited to, concrete, asphalt, masonry, porous ceramic, wood and wood-like materials, composite woods such as ply-wood and compressed board, stone such as brownstone and redstone, plaster, combinations thereof, and the like. These surfactants are also useful as a concrete emulsion mix additive in order to disperse dyes or increase or decrease the density of a concrete-forming composition, as discussed above.
The piperazine-substituted organosulfonate useful in the present invention is suitably produced by reacting, for example, an aralkyl ether sulfonic acid with a piperazine compound. Likewise, the piperazinone-substituted organosulfonate useful in the present invention is suitably prepared by reacting an aralkyl ether sulfonic acid with a piperazinone compound. Particularly adva
Arif Shoaib
Farrell Joseph T.
Marien Bruce A.
Roth Robert P.
Ruggiero Murray A.
Arch Chemicals Inc.
Carlson Dale Lynn
Delcotto Gregory
Wiggin & Dana LLP
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