JPH06508393A - self-thickening cleaning composition - Google Patents

Abstract

Self-thickened aqueous cleaning compositions are described which comprise an alkyl sulfate anionic surfactant and an electrolyte system. The compositions are made physically stable, even at low temperature, by incorporating therein a nonionic surfactant from a selected class.

Description

[Detailed description of the invention] self-thickening cleaning composition Technical field CLEANING COMPOSITIONS FIELD OF THE INVENTION This invention relates to cleaning compositions. The composition according to the invention comprises a thickener compound Moreover, the composition according to the invention is self-thickening in that it does not require the presence of , is physically stable even at low temperatures. The composition according to the present invention can be used, for example, to harden Useful as a surface cleaning composition or as a laundry cleaning composition. Ru.

Background technique Thickened cleaning compositions are well known in the art and are suitable for use on surfaces such as hard surfaces or A variety of applications have been found for laundry cleaning compositions.

The purest method of preparing such compositions is by adding a thickener to a non-viscous product. be. However, thickeners have many drawbacks, such as processing problems, long-term product recognized as undesirable due to stability issues as well as other issues related to formulation costs. It may happen. Therefore, cleaners that are viscous but do not necessarily contain thickeners It is desirable to formulate a treatment composition.

The technology combines anionic surfactants with electrolytes in an aqueous medium. A system whose viscosity increases due to (the viscosity is regulated by balancing both components) teach that it is possible to do so by using There is. This system is very often used in shampoo formulations, but It has also found application in coating compositions. Theoretically, this solution has an anionic surfactant Although it can be used in combination with sexual agents, the composition of the present invention does not contain alkyl sulfates derived from natural coconut oil. Use only ate anionic surfactants. In fact, this surfactant has good properties It is particularly desirable for its performance and obviously for environmental reasons.

Thus, such anionic surfactants and electrolytes derived from natural coconut oil A self-thickening composition can be prepared. The viscosity of such compositions will, of course, depend on the temperature. A new technical problem is that such compositions are susceptible to phase separation in the product. This concerns the fact that it is not physically stable at the low temperatures it is exposed to. As a result, the product is beautiful. It has an unacceptable appearance.

This problem can be solved by using specific electrolytes and by adding a certain type of nonionic surfactant to the system. It has now been found that a solution can be achieved by adding agents.

Canadian patent CA 1 194 381 specifies that anionic surfactants, electrolytes and and ethoxylated alcohol surfactants.

European Patent EP 116 905 discloses that ethoxylation and/or propoxylation Industrial Grade Synthetic Anionic Surfactant Concentrate Using Silicated Alcohol Surfactant It teaches reducing viscosity.

European patent application EP 329 209 discloses that surfactants that increase viscosity, A polishing composition is disclosed that includes an electrolyte and a solvent.

Demonstration of invention The composition according to the invention contains 1 to 25% by weight of the total composition derived from natural coconut oil. Kill sulfate anionic surfactant, 0.1-8% ammonia by weight of total composition um salt and 0.5 to 25% by weight of the total composition of the following structure R-0-[(R20)n (R30)m]-R4 (wherein R is a C alkyl or alkenyl group, 1 1-2 5 can be; R2 is a 02-4 aliphatic hydrocarbon chain; R is a methyl or ethyl-substituted C2- C4 aliphatic hydrocarbon chain; R4 is C1-25 alkyl or alkenyl or carboxyl chain, or H can be; n is an integer from 1 to 10; m is an integer from 0 to 20) or a mixture thereof at a shear rate of 60 rp■ Self-thickening aqueous cleaning composition having a viscosity of 50-700 cps at 20°C It is a thing.

BEST MODE FOR CARRYING OUT THE INVENTION The composition according to the invention comprises 1% to 25% by weight of the total composition, preferably 2% to 25% by weight of the total composition. 8% by weight, most preferably 3% to 5% alkyl sulfates derived from natural coconut oil anionic surfactants or mixtures thereof. suitable for use here The alkyl sulfate anionic surfactants can be prepared by methods well known to those skilled in the art. Can be built.

Typically such surfactants are sulfated and optionally ethoxylated. Manufactured from coconut oil. In fact, ethoxylated alkyl sulfate surfactants also The average anionic surfactant that is suitable for use here and should be used here The degree of ethoxylation should not be greater than 2.

The neutralizing cation for alkyl sulfate derived from natural coconut oil that should be used here is , any of the conventional cations used in detergent technology, e.g. , ammonium salts, potassium salts or unsubstituted or N-substituted ammonium salts, or or a mixture of these. Sodium salts are preferred.

The viscosity of the composition according to the invention is determined by the use of ammonium salts as electrolyte. That's what you get. As ammonium salts suitable for use in compositions according to the invention are alkanol ammonium salts, ammonium chloride, ammonium acetate, Ammonium carbonate, ammonium carbonate, etc. What increases viscosity , an electrolyte along with the surfactant. The viscosity of the composition depends on the proportion of both components The general rule is that the more electrolyte you add, the higher the viscosity you get. Ru. The composition according to the invention comprises 0.1 to 8% by weight of the total composition, preferably 0.2 to 8% by weight of the total composition. 6% by weight, most preferably 0.3-5% ammonium salt. Ammonium The ratio of salt to anionic surfactant was determined by the viscosity at 20°C at a shear rate of 60 rpm. A group having a degree of 50 to 700 cps, more preferably 80 cps to 350 eps. Adjust to obtain the desired product. The viscosity of the composition according to the invention is determined by Allows use on surfaces.

Such a product containing the surfactant and electrolyte can be used on its own, but As described in the background section, the physical stability of the product is determined by the product's low temperature, approximately 10 It is not satisfactory under all conditions because it undergoes phase separation below ℃. This problem This can be solved by simply adding certain types of nonionic surfactants to the formulation. has now been discovered. Therefore, the composition according to the present invention can contain 0.5 to 25% of the total composition. % by weight, preferably 0.6-10% by weight, most preferably 0.7-2% by weight of the formula %formula% (wherein R1 is a 01-25 alkyl or alkenyl chain, preferably C1o-1 5, preferably alkyl; R is a C aliphatic hydrocarbon chain, preferably C2 　2～・4 can be; R is a methyl or ethyl-substituted C'' C4 aliphatic hydrocarbon chain, preferably methyl R4 is C1-25 alkyl or alkenyl or carboxyl-substituted ethylene; boxyl chain, or R1 is preferably H; n is 1-10. Preferably 1-5 m is an integer of 0 to 20, preferably 0 to 10, most preferably 0 to 3; number) or mixtures thereof.

In the above chemical formula, the RO and R30 groups may have different arrangements in the molecule. should be understood. Moreover, when n and m are larger than 1, various R2 0 and R30 groups may be in the same molecule. These surfactants are ICI Pull the product name from UKANIL FM ■ or from BASF It is commercially available as PLURAPAC LF■. It is preferable that m is 0. A suitable surfactant is the product name DOBANOL from Shell. Alternatively, it can be done manually using BASF's product name LUTENSOL.

The composition according to the present invention is acidic and has a pH of 1 to 6, preferably L<2.5 to 5. do. The pH of the composition according to the invention is determined in part by the amount of electrolyte. , the pH of the final composition is adjusted by adding a suitable acidifying agent, such as an organic Alternatively, it can be adjusted by adding an inorganic acid or an acid salt. Examples of suitable acidifying agents are , sulfuric acid, phosphoric acid (although slightly less desirable from an environmental standpoint), hydrochloric acid, phosphonic acid , citric acid, acetic acid, tartaric acid, maleic acid, succinic acid, malonic acid, etc., or It is a mixture of

In particularly preferred embodiments of the invention, the composition comprises 0.5 to 20 parts by weight of the total composition. % by weight, preferably from 1 to 10% by weight of citric acid. In fact, citric acid in the present invention Many benefits can be obtained by adding to such compositions, such as limescale removal. It was found to have improved performance and bactericidal properties. Citric acid according to the present invention When used in a composition, by incorporating ammonium hydroxide, the above-mentioned Ammonium salts, in this case ammonium citrate, can be generated on-site. It is Noh. The presence of citric acid helps increase the viscosity of the product. optimal performance When using large amounts of citric acid to obtain It may therefore be necessary to adjust the pH of the composition.

In a preferred embodiment, the composition according to the invention comprises 0.01 to 0.5 of the total composition. Weight % formula (where n is an integer of about 12 to 43 and U is an integer of about 2 to 8) Blockade of 1.2-propylene terephthalate polyoxyethylene polyester and and mixtures thereof.

These polymers are used in softening compositions and in liquid detergent compositions and in E.I. Detailed as an antifouling agent in specification No. 85 427 and specification EP 220 156 has been done.

However, the polymer is now known to have a regulating effect on the viscosity of the composition. It was discovered. In fact, the viscosity of a given product is typically very sensitive to temperature. and the composition according to the invention remains phase stable at all temperatures, but as the temperature decreases. It tends to become more viscous as it cools.

The polymer makes the viscosity of the composition less sensitive to temperature and therefore makes the composition less sensitive to temperature. It has now been found that the composition has less tendency to thicken at low temperatures.

In a preferred embodiment, the composition according to the invention comprises 1 to 15% by weight of the total composition, Preferably 2 to 10% by weight, most preferably 3 to 8% by weight of hydrogen peroxide. nothing.

The composition of the prior art, i.e., a viscous system consisting of an anionic surfactant and an electrolyte. In other words, addition of hydrogen peroxide results in a drastic decrease in viscosity. The composition according to the invention, namely Another advantage of compositions containing stabilized nonionic surfactants from certain types is that peracids The addition of hydrogen oxide has little effect on the viscosity of the product. child As such, bleaching compositions can also be prepared according to the present invention.

The compositions according to the invention contain conventional ingredients such as solvents, chelating agents, fragrances and and dyes (provided that all these ingredients are compatible with the composition). ).

The composition according to the invention can be prepared by any method of mixing all the ingredients together. Can be prepared. However, in preferred embodiments the composition comprises a substantial amount of citric acid. If the citric acid is dissolved in water separately from the rest of the composition, the pH of the citric acid solution is to the target pH value of the final composition (7. Add the above pH-adjusted citric acid solution to the composition. from adding to the remainder (whose pH has been adjusted separately to the target pH value). It is preferable to use a method that If the composition also contains hydrogen peroxide, quench Adding hydrogen peroxide to the remainder of the composition containing the acid as a final step in the process is preferred.

The composition according to the invention can be used in many different situations where it is desirable to use a viscous product. It can be useful. For example, hard surface cleaning compositions are advantageously viscous. Formulated as a concentrated product to optimize application to vertical surfaces, e.g. bathtubs or toilet bowls . In fact, the viscosity of the product is such that it prevents it from running down the surface too quickly. Ru.

The composition according to the invention can also be used in laundry cleaning. For example, washing The pretreatment composition is advantageously formulated as a viscous product for most convenient application to laundry fabrics. It can be prescribed at In fact, the viscosity of this product allows for better control of product distribution. and prevents spreading of the dispensed product beyond the fabric surface to be pretreated.

The following examples will further illustrate the invention.

Example The following composition containing the indicated ingredients in the indicated proportions (% by weight) is prepared.

data The data below illustrate the benefits obtained from the compositions according to the invention. Weight of total composition for the amount Coconut sodium alkyl sulfate 3.5% Ammonia 0.75% Citric acid 5.8 p)I 4.3 A composition is prepared containing water and the balance (up to 100%) of minor ingredients. Also, Uka An identical composition is prepared, except that it additionally contains 1.5% of NilR.

The viscosity of both compositions was then measured at different temperatures at a shear rate of 60 rp- do. The results are reported in Figure 1.

This graph shows that the composition without Ucanyl R presents phase stability problems below 13°C. while at the same time compositions with Ucanil 1 increase in viscosity as the temperature decreases. Indicates that it remains stable. In addition, it has Ukanil at all temperatures. It can be observed that the composition with is slightly more viscous than the composition without.

■No Ukanil With roucanil Continuation of front page (81) Designated countries 0A (BF, BJ, CF, CG.

CI, CM, cA, GN, ML, MR, SN, TD, TG), AU, BR, CA ,JP,US (72) Inventor Ziebos, Beter Rosalia Joanne 230 Cabelestrad, Aartselaar, Belgium (72) Inventor: Carini, Michel, Jean-Belgium, Strambeek-Pepa -, Begonia arran, 5 (72) Inventor Foss, Eddy 15, Koutsielsbeag, Linden, Belgium

Claims (13)

[Claims] 1. Alkyl sulfate shade derived from natural coconut oil from 1 to 25% by weight of the total composition Ionic surfactants, ammonium salts from 0.1 to 8% by weight of the total composition and total composition 0.5-25% by weight of the following structure R1-O-[(R2O)n(R3O)m]-R4 (wherein R1 is C1-25 alkyl is a kyl or alkenyl group; R2 is a C2-4 aliphatic hydrocarbon chain; R3 is a methyl or ethyl-substituted C2 ~C4 aliphatic hydrocarbon chain; R4 is C1-25 alkyl or alkenyl or carboxyl chain, or H can be; n is an integer from 1 to 10; m is an integer from 0 to 20) or a mixture thereof, at a shear rate of 60 rPm. Self-thickening aqueous cleaning composition with viscosity 50-700 CPS at 20°C thing. 2. R1 is a C10-15 alkyl chain; R2 is ethylene; R3 is methyl-substituted ethylene; R4 is H; n is an integer from 1 to 5; m is an integer from 0 to 10, most preferably from 0 to 3, or a mixture thereof; 2. The composition of claim 1. 3. 0.6-10%, most preferably 0.7-2% by weight of the total composition. The composition according to any one of claims 1 or 2, comprising a compound. 4. 2-8%, most preferably 3-5% by weight of the total composition of said alkyl sals. The composition according to any one of claims 1 to 3, comprising a phate anionic surfactant. thing. 5. 0.2-6%, most preferably 0.3-5% ammonia, by weight of the total composition 5. The composition according to any one of claims 1 to 4, comprising an um salt. 6. Has a viscosity of 80 cps to 350 cps at 20°C at a shear rate of 60 rpm The composition according to any one of claims 1 to 5. 7. Composition according to any one of claims 1 to 6, having a pH of 1 to 6. 8. 8. The composition according to claim 7, having a pH of 2.5-5. 9. Any of claims 1 to 8 further comprising citric acid in an amount of 0.5 to 20% by weight of the total composition. The composition according to item 1. 10. 0.01-0.5% by weight of the total composition ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (where n is an integer of about 12 to 43 and u is an integer of about 2 to 8) Blocking of 1,2-propylene terephthalate polyoxyethylene terephthalate 10. The method according to any one of claims 1 to 9, further comprising lyesters and mixtures thereof. composition. 11. 1-15% by weight of the total composition, preferably 2-10%, most preferably 11. According to any one of claims 1 to 10, further comprising 3 to 8% by weight of hydrogen peroxide. Composition. 12. Dissolve the citric acid in water separately from the rest of the composition and bring the pH of the citric acid solution to a maximum. Adjust the target pH value of the final composition and add the above pH adjusted citric acid solution to the remainder of the composition ( the pH is separately adjusted to the pH target value). Item 9. A method for producing the composition according to item 9. 13. As a final step, hydrogen peroxide is added to the remainder of the composition containing citric acid. 13. The method of claim 12.