Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/43—Solvents

Definitions

• the present invention relates to concentrated hard-surface cleaning compositions, which show excellent cleaning on both kitchen and bathroom soils, excellent shine performance, and are not aggressive to surfaces to be cleaned therewith and packaging materials.
• compositions are substantially free of terpene solvents, and contain a narrowly-defined solvent derived from propylene glycol.
• compositions containing a binary solvent system constituted of terpenes and polar solvents such as benzyl alcohol and butyl carbitol have been disclosed in European Patents 0 040 882 and 0 080 749.
• liquid, concentrated cleaner compositions can be formulated, which are substantially free of terpene solvent, and show remarkable cleaning efficiency on both kitchen and bathroom soils, shine performance and surface-compatibility.
• Such compositions contain a narrowly-defined solvent derived from propylene glycol, and do not contain an excessive level of hydrotrope.
• EP-A-0 165 885 discloses concentrated liquid hard-surface cleaning compositions containing a ternary active system having hydrotroping properties.
• US-3,591,510 relates to the use of propylene-glycol derivatives in dilute liquid hard-surface cleansers.
• the present invention relates to concentrated liquid cleaning compositions being substantially free of terpene solvents, containing from 6% to 20% by weight of a surface-active agent and from 5% to 20% by weight of a solvent of the formula: wherein R is a C1 to C8 alkyl, alkenyl or alkyl aryl group, preferably a C1 to C4 alkyl group, and n is an integer from 1 to 4, preferably 1 or 2.
• Water-soluble detersive surfactants useful herein include well-known synthetic anionic, nonionic amphoteric and zwitterionic surfactants and mixtures thereof. Typical of these are the alkyl benzene sulfates and sulfonates, paraffin sulfonates, olefin sulfonates, alkoxylated (especially ethoxylated) alcohols and alkyl phenols, amine oxides, sulfonates of fatty acids and of fatty acid esters, and the like, which are well-known in the detergency art.
• such detersive surfactants contain an alkyl group in the C10-C18 range; the anionic detersive surfactants are most commonly used in the form of their sodium, potassium or triethanolammonium salts.
• the nonionics generally contain from 3 to 17 ethylene oxide groups per mole of hydrophobic moeity.
• Particular preferred in the compositions of the present invention are: C12-C16 alkyl benzene sulfonates, C12-C18 paraffin-sulfonates and the ethoxylated alcohols of the formula RO(CH2CH2O) n H, with R being a C12-C15 alkyl chain and n being a number from 3 to 10.
• Anionic surfactants are frequently present at levels from 5 to 20% of the composition.
• Nonionic surfactants are used at levels between 1% to 10% by weight of the composition.
• Mixtures of the like surfactants can also be used.
• the total level of surface-active agents in the present concentrated compositions is in excess of 6% by weight, generally from 6% to 20% by weight of the total composition.
• the organic solvent - The organic solvent to be used in the present composition has the general formula wherein R is an alkyl, alkenyl, or alkyl-aryl group having from 1 to 8 carbon atoms, and n is an integer from 1 to 4.
• R is a alkyl group containing 1 to 4 carbon atoms, and n is 1 or 2.
• Especially preferred R groups are n-butyl or isobutyl.
• 1-n-butoxypropane-2-ol is especially preferred.
• the organic solvent herein is used at levels of from 5 to 20% by weight of the composition, preferably 7 to 15%.
• the solvent system can contain, in combination with the solvent described hereinabove, water-soluble CARBITOL® solvents or water-soluble CELLOSOLVE® solvents.
• Water-soluble CARBITOL® solvents are compounds of the 2-(2-alkoxyethoxy)ethanol class wherein the alkoxy group is derived from ethyl, propyl or butyl; a preferred water-soluble carbitol is 2-(2-butoxyethoxy)ethanol also known as butyl carbitol.
• Water-soluble CELLOSOLVE® solvents are compounds of the 2-alkoxyethoxy ethanol class, with 2-butoxyethoxyethanol being preferred.
• Suitable solvents to be used with the solvents of the invention are also benzyl alcohol, and diols such as 2-ethyl-1,3-hexanediol and 2,2,4-trimethyl-1,3-pentanediol.
• Preferred solvents to be used in combination with the propylene glycol derivatives hereinabove are Carbitol® solvents.
• An especially preferred mixture is represented by 1-n-butoxypropane-2-ol and butyl carbitol, in a weight ratio of 2:1 to 1:2; the level of co-solvent is preferably from 4% to 8% of the total composition.
• the total level of organic solvent in the composition is typically from 10% to 25% by weight.
• compositions herein are substantially free of terpene-solvents.
• solvents are generally used at levels exceeding about 2%, terpenes cannot be incorporated in the claimed compositions in such proportions.
• relatively minor sub-additive levels of terpenes e.g., below 1% (calculated on the total cleanser composition), can be present originating from conventional ingredients such as perfumes.
• the present composition can contain additional components, which can be highly desirable.
• compositions contain a detergent builder and/or metal ion sequestrant.
• detergent builders include the nitrilotriacetates, (NTA), polycarboxylates, citrates, water-soluble phosphates such as tri-polyphosphate and sodium ortho- and pyro-phosphates, silicates, ethylene diamine tetraacetate (EDTA), amino-polyphosphonates (DEQUEST), phosphates and mixtures thereof.
• NTA nitrilotriacetates
• EDTA ethylene diamine tetraacetate
• DEQUEST amino-polyphosphonates
• Preferred builders/sequestrants for use in the present invention are NTA, EDTA, citrates and mixtures thereof.
• the builders/sequestrant will be present at levels of from 5% to 15%, preferably from 7% to 12%.
• soaps in the compositions of the invention. Soaps prepared from coconut oil fatty acids are preferred.
• Soaps can be used in amounts ranging from 0.2% to 3% by weight of the composition.
• Optional components are also represented by ingredients typically used in commercial products to provide aesthetic or additional product performance benefits.
• Typical ingredients include pH regulants, perfumes, dyes, optical brighteners, soil suspending agents, detersive enzymes, gel-control agents, thickeners, freeze-thaw stabilizers, bactericides, preservatives, and the like.
• Another optional but highly desirable ingredient for use herein is represented by conventional detergent hydrotropes.
• suitable hydrotropes are urea, monoethanolamine, diethanolamine, triethanolamine and the sodium potassium, ammonium and alkanol ammonium salts of xylene-, toluene-, ethylbenzene- and isopropyl-benzene sulfonates. It is a particular feature of the present invention, however, that concentrated formulations can be prepared without the need for an excessive amount of hydrotrope, thus preventing a negative effect on shine performance.
• compositions herein typically contain water as a carrier.
• the water-level can vary in the range from e.g. 40% to 60%.
• Water-alchol e.g., ethanol, isopropanol, butanol, etc.
• Alkylated polysaccharides can be used to increase the stability and performance characteristics of the compositions.
• compositions herein are preferably formulated in the alkaline pH range, generally in the range of pH 8-11, preferably about 10-10.8.
• Caustics such as sodium hydroxide and sodium carbonate can be used to adjust and buffer the pH as desired.
• the claimed concentrates can be used as such, or preferably diluted in water before use, typically 4 times.
• Concentrated liquid cleansers were prepared by mixing the listed ingredients in the stated proportions (% by weight).
• composition A Composition A
• Example I and Example II were diluted four times in water, and the resulting compositions were compared with Composition A, in terms of cleaning performance on kitchen soil and bathroom soil.
• test-soils were prepared as follows.
• the plates are placed in the oven at 115°C ("soft soil”) or 170°C (“hard soil”) for 2 hours and then allowed to age at least 1 day.
• the testing conditions were as follows:
• compositions of Examples I and II were also found to give an excellent shine performance on cleaned surfaces.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (4)

Publications (2)

Family

ID=26291399

Family Applications (1)

Country Status (1)

Cited By (15)

Family Cites Families (4)

• 1987
  • 1987-09-17 EP EP87308220A patent/EP0261874A3/de not_active Withdrawn

Also Published As

Similar Documents

Legal Events