Chemical linker compositions

Details Chemical linker compositions Chemical linker compositions

2000-09-01

2002-05-21

Green, Anthony (Department: 1755)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Liquid composition

C106S015050, C424S059000, C424S275100, C424S405000, C424S407000, C510S101000, C510S405000, C510S421000, C510S422000, C510S423000, C510S424000, C510S425000, C510S427000, C510S535000, C510S536000, C510S537000

Reexamination Certificate

active

06391843

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a chemical linkers that can be added to an organic chemical such as a perfume, insect repellent, antibacterial agent, and/or an allergen agent in order to reduce the rate of vaporization of the chemical additive from the surface to which it has been applied.
BACKGROUND OF THE INVENTION
A major problem is how long a chemical additive such as a perfume, fabric softener, sunscreen agent, insect repellent, antibacterial agent and/or allergen agent will be effective on a surface on which the chemical has been deposited. For example, if the lasting effect of a perfume deposited on the human skin could be increased the necessity for repeat application of the perfume would be reduced. Alternatively, if the concentration of the perfume in a solution could be reduced while maintaining its effectiveness substantial cost savings could be achieved. The present invention relates to chemical linkers which can be added to the organic chemical whereby the chemical linker by chemical association links the organic chemical to the surface on which the organic chemical has been deposited thereby decreasing the rate of vaporization of the organic chemical. The requirement of the chemical linker is that when the chemical linker is added to a organic chemical that an exothermic interaction occurs between the chemical linker and the organic chemical which causes a reduction in the active vapor pressure of the organic chemical.
The instant invention further relates to the use of the chemical linkers and the organic chemical in a surfactant based cleaning compositions.
For example, Methylneodecanamide (MNDA) is an insect repellent agent which can be added to a hard surface cleaning composition. This is necessary to deposit 10 micrograms of MNDA per cm2 to have one day efficacy. It is more than 500 molecular layers. To deliver this amount requires almost neat usage and is not compatible with consumers habits and practice. Unfortunately, one may not increase the MNDA concentration. It is desirable to increase the repellency duration without increase MNDA quantity.
On the other hand, it would be desirable to have more formulation flexibility with high oil uptake capacity perfumes. The increase of the substantivity of these perfumes ingredients would make possible to either increase performance of the perfume, or deliver the same cleaning and olfacting results with less perfume. This invention teaches that chemical linkers are a way to deliver more efficiently actives such as MNDA or perfumes to a surface to which it has been applied.
SUMMARY OF THE INVENTION
The present invention relates to chemical compositions which comprise approximately by weight a complex of:
(a) an organic chemical having a chemical group with a dipole moment of at least about 1.5 selected from the group consisting of a chemical compound containing an amide linkage such as an insect repellents, antibacterial agents containing a carbon-halogen bond such as triclosan, allergen agents, fabric softener or sunscreen agent containing an ester group or enzymes containing acid groups and a chemical compound containing an aldehyde group or alcohol group such as those type of compounds present in perfumes and mixtures thereof; and
(b) a chemical linker which undergoes an exothermic reaction with the organic chemical, wherein the chemical linker can be a polyvinyl pyrrolidone polymer, an ethoxylated polyhydric alcohol, carboxylic acid having about 4 to about 6 carbon atoms and a polyethylene glycol having a molecular weight of about 600 to about 10,000, preferably about 1,000 to about 8,000 wherein the mole ratio of the organic chemical to the chemical linker is about 4:1 to about 1:4.
The instant compositions excluded the use of ethoxylated nonionic surfactants formed for the condensation product of primary or secondary alkanols and ethylene oxide or propylene oxides because the use of these ethoxylated nonionic would cause a weakening of the chemical association between the chemical linker and the organic chemical and/or anionic surfactant.
The complex of the organic chemical and chemical linker can be applied neat to the surface which is being treated, wherein the chemical linker functions to bind the organic chemical to the treated surface. Alternatively, the complex of the organic chemical and the chemical linker can be dissolved at a concentration of about 0.1 wt. % to about 99.9 wt. % in a solvent which dissolves both the chemical linker and organic chemical. Alternatively, the complex of the chemical linker and the organic chemical can be incorporated into a cleaning composition such as a body cleansing formulation, a fabric softening composition, a body lotion, a shampoo, an oral cleaning composition, a light duty liquid composition, an all purpose or microemulsion hard surface cleaning composition and a fabric care cleaning composition.
The instant invention also relates to complexes of a chemical linker, an organic chemical having a dipole moment of at least about 1.5 Debyes and an anionic sulfonate, carboxylate or sulfate containing surfactant which can be optionally mixed with a zwitterionic surfactant or an amine oxide and mixtures thereof.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a complex of:
(a) an organic chemical having a chemical group having a dipole moment of at least about 1.5 Debyes, more preferably at least about 1.6 Debyes; and
(b) a chemical linker selected from the group consisting of carboxylic acids having 4 to 6 carbon atoms, polyethylene glycols having a molecular weight of about 600 to about 10,000, an ethoxylated polyhydric alcohol and a polyvinyl pyrrolidone, polymer wherein the mole ratio of the organic chemical to chemical linker is about 4:1 to about 1:4. The present invention also relates to a solution of 0.25 wt. % to 99.75 wt. % of the complex of the organic chemical and chemical linker in a solvent which can solubilize the complex of the organic chemical and chemical linker, wherein the composition does not contain an N-alkyl aldonamide, an alkylene carbonate, a nonionic water-soluble cellulose polymer, a C
8
-C
18
alkylamide C
2
-C
3
alkyl di C
1
-C
2
alkylamine, cyclomethicone, a linear anionic polycarboxylate such as a copolymer of vinyl methyl ether and maleic anhydride, and a mono, di or triester of an ethoxylated polyhydric alcohol having the formula:
 wherein w equals one to four B is selected from the group consisting of hydrogen and a group represented by:
 wherein R is selected from the group consisting of alkyl group having about 6 to 22 carbon atoms, and alkenyl groups having about 6 to 22 carbon atoms, wherein at least one of the B group is represented by said
 and R′ is selected from the group consisting of hydrogen and methyl groups; x, y and z have a value between 0 to 60, provided that (x+y+z) equals about 2 to about 100, wherein in Formula (I) the ratio of monoester/diester/triester is 45 to 90/5 to 40/1 to 20.
The present invention further relates to a composition which comprises:
(a) 0.1 to 10 wt. % of an organic chemical having a chemical group with dipole moment of at least about 1.5 Debyes, more preferably at least about 1.6 Debyes;
(b) 0 to 30 wt. % of at least one anionic surfactant having a carboxylate, sulfate or sulfonate group;
(c) 0.1 to 20 wt. % of a chemical linker compound selected from the group consisting of an ethoxylated polyhydric alcohol, a polyvinyl pyrrolidone polymer, a polyethylene glycol having a molecular weight of about 600 to 10,000 and a carboxylic acid having 4 to 6 carbon atoms and mixtures thereof, wherein the chemical linker complexes both with the anionic surfactant and the additive;
(d) 0 to 15 wt. % of a second surfactant selected from the group consisting of an amine oxide surfactant and a zwitterionic surfactant and mixtures thereof, wherein the anionic surfactant complexes with the amine oxide or zwitterionic surfactant;
(e) 0 to 20 wt. % of a cosurfactant; and
(f) 50 to 99.8 wt. % of water, wherein the composition does not

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