Liquid cleaning product.

AS AFRICAN AND MALAGASY

INDUSTRIAL PROPERTY

P. 887

Yaounde (Cameroon) Patent International Patent Classification: c11 no. 00852

O&'M. AI.

19 December 1964 requested 12 hr 30 min. to to the OA m P. I-.

(G.P. no. 50,939) by Colgate Lead-to-aogtao Research Company analysis, residing in the United States of America.

Delivered 15 November 1967, published at Official ballot n° 4/5 of 1967. Priority: Patent application filed in the United States of America under the trade name no. 861,191 22 December 1959 William by Ralph the Hearn, AI listing Neil et MacLean and Frederic W. TRUSLER.

The present invention relates to a composition

detergent liquid substantially homogeneous and acting

vigorous comprising a soluble organic detersive

in water, a soluble alkali inorganic polyphosphate

in water, carboxyalcoyl-cellulosic material and

a water-insoluble wax, as it will be defined.

More particularly, it relates to a liquid

aqueous to forcefully, substantially homogeneous,

movable, comprising a water-soluble detersive

consisting of a sulfonated anionic organic detersive

or nonionic organic in a proportion of

in the range of about 5 to 30% by weight, a polyphosphate

mineral water-soluble alkali in an amount

from about 10 to 30 % weight and normally soluble

in the amount of water present, a small amount

0.1 to such that about 2% by weight of a carboxyl -

(comp) alkyl cellulose having tendency to

separating from the liquid and a small amount, such as

0.1 to 1% by weight, - hydrogé castor oil

offspring sufficient to inhibit separation of said

carboxyalcoyl cellulose and facilitate maintaining of the pro -

bro to the substantially homogeneous state. A shape préfé -

input of the invention relates to the mixing of said

cellulosic material and hydrogenated caster oil

dispersed in an aqueous liquid containing a detersive

alkali such as a sulfonated anionic alkyl (Work) bas -

zene sulfonate, potassium polyphosphate as

a pyrophosphate or a tripolyphosphate, an aryl -

hydrotropic sulfonate in water-soluble and a alcoylola -

mide higher fatty acid in proportions

such as to produce a nearly

homogeneous.

Such a product manifest many caractéristi -

er interest such as improved stability

separation of the carboxy methyl cellulose. The

product remains substantially homogeneous during the old -

sunburn. This stability is permitted at

shopping normal room temperature, to

the test at high temperatures and cooling

and return of the product at room temperature, compa -

rativement to similar products free from this

wax. The composition can be poured and flow free -

telling of the container without shaking

increasing the fluidity or homogeneity. The pro -

bro can be conveniently used by the current user|

adding small portions to a laundry bath, and so on, which will have substantially the same composition. The liquid may be used in a container or any suitable packaging material.

Organic detersive compositions comprise an organic detersive selected from water-soluble anionic sulfonated (comprising the sulfates and sulfonates) and the nonionic organic detergent. SSC materials are known and have a solubility and dispersibility in water sufficient to form aqueous solutions foaming and detergent in the concentrations are still suitable for use, for example washing dishes, laundering, andc. They may be used individually or in any combination desired.

Among the syndets suitable alkyl aryl sulfonates include soluble higher in water, particularly those having eight to 15 carbon atoms in the alkyl group. It is preferable to use the detergents (Work) alkyl benzene sulfonates to obtain optimal effects although it is also used other detersive similar having a single core aryl such as toluene, xylene, or phenol. The substituent alkyl upper present on the aromatic ring may be straight or branched. Examples of such substituents are groups monylic, dodecyl and pentadecylic from polymers of mono-oléflnes lower branched chain groups decilic, kerylic, like, straight chain. Another type of detersive suitable is formed by the condensation products of alkyl (Work) phenols and ethylene oxide such as those having an average of about 4 to 6 molecules of ethylene oxide and about 8 by phenol group to 10 carbon atoms in the alkyl group.

Examples of suitable aliphatic detersive alkyl sulfates are normal and upper secondary detersive, particularly those having from about 8 to 15 carbon atoms in the fatty alcohol remains as lauryl sulfate (or sulfate of coconut fatty alcohol). Other detersive suitable sulfuric acid esters of polyalcohols incompletely esterified with higher fatty acids, for example the monoglyceride monosulfate coconut oil, esters of higher fatty acids acids alcoylol-to-sultonic low molecular weight, e.g. oleic acid ester of isethionic acid, sulfates of higher fatty acid ethanolamides (e.g. coconut), higher fatty acid amides of amino-alkyl-sulfonic, e.g. I ' lauric acid amide of taurine, andc.

These sulfates and sulfonates detergents are used preferably in the form of their alkali metal salts such as those of sodium and potassium. Other water-soluble salts, such as salts containing nitrogen, e.g. of polyoxyalkylene alkylamine bottom, are also usable, examples being ammonium salts, of triisopropanol amine, mono - and tri-ethanolamine detergents.

Examples of suitable nonionic detersive detersive nonionic water-soluble polyalkylene oxide. They contain a hydrophobic organic group having at least about 8 usually carbon atoms and preferably] where CAs' to 30 carbon atoms, condensed with at least 5 and usually up to about 50 ethylene oxide groups. It is preferable to use the condensation products polyoxyalcoylénés from ethylene oxide. May be replaced by other lower alkylene oxides such as propylene oxide and butylene oxide.

The condensation products of polyalkylene oxide of aicoyl phenols can be used, such as polyoxyethylene ethers of aicoyl phenols having an alkyl group of at least 6 and usually about 8 to 12 carbon atoms and a ratio of ethylene oxide (number of molecules per molecule of phenol) of about 7.5, 8.5, 11.5 and 20. The number of ethylene oxide groups is usually of 8 to about 18. Examples of the substituent are alkyl di-isobutylene, the diamyl, propylene polymerized, an olefin C._C. - C.₇ dimerized, andc.

Other suitable non-ionic detersive poiyoxyalcoylene esters, organic acids, such as higher fatty acids, resin acids, tall oil acids or acids from oxidation of the oil, the condensation products of polyalkylene oxides with the amides of higher fatty acids as the primary amides of higher fatty acids, mono - and di-ethanolamides condensed with ethylene oxide and corresponding sulfonamides, ethers of polyalkylene oxides higher fatty alcohols such as lauryl alcohols, oleyl or condensed with 6 cetbylic to 30 molecules of ethylene oxide, the alkyl (Work) mercaptan or thio-higher alcohols condensed with ethylene oxide and condensation products are water soluble polyoxyethylene with the polyoxyalkylene-pro-pylene glycol hydrophobic.

The amount of organic detergent material present in the final composition is about 5 to 30 % and preferably from about 10 to 25% by weight.

Polyphosphates water soluble alkaline minerals have the property of inhibiting calcium material precipitation and brick in aqueous solution and to aid the scrubbing liquid forcefully. They can be used in the form of the normal salt or fully neutralized for example tripolyphosphate pentapotassium or partially neutralized salt, e.g. potassium tripolyphosphate acid. It is preferable to use tripolyphosphate pentapotassium and tetrapotassium pyrophosphate, including any mixtures thereof.

These polyphosphates which are to be used in any substantial quantity such that addition of a small amount of the liquid product to a wash bath gives washing performance and effective washing. In the present invention these polyphosphate are present in amounts such that they are completely soluble in the amount of water present in the product at room temperature so that the phosphates may be considered to be in solution in water. The amount of polyphosphates is of the order of 10 to 30% by weight and preferably about 15 to 20% of.

The detersive and polyphosphate must be dissolved or solubilized in water to form a substantially homogenous liquid. In the formulation of the product, these must be suitably selected and proportioned to be compatible in the composition, using, if desired or if necessary, an appropriate agent solubilizing or coupling.

The introduction of a suitable dispersing agent soluble in water or hydrotropic substance effectively facilitates compatibility of the ingredients to form a homogeneous liquid product. The aryl sulfonate hydrotrope soluble in water, in particular the alkyl (Comp) aryl sulfonate alkali metals are effective in such products. It is preferable to use the - toluene and xylene sulfonate sodium and potassium. Sulfonates made from xylene comprise the ortho-xylene sulfonate, metaxylene sulfonate, xylene sulfonate and ethylbenzene sulfonate.

The hydrotropic agent is used in an amount varying according to the other ingredients but the proportion is usually about 4 to 12%, preferably 4 to 8% by weight of the composition.

It is desirable to incorporate a alcoylolamide higher fatty acid such as monoethanolamides, diethanolamides the, having about 10 to the isopropanolamides 14 carbon atoms in the acyl group.

Examples are the diethanolamides, monoethanolamides and isopropanolamides coconut oil or equivalent lauric, myristic and capric. These materials were used to be compatible in the system, appropriate amounts being in the range of about 1 to 15 %, preferably about 5 to 12% by weight of the composition. The main purpose alcoylolamides improve the detergency and modify the foaming compositions.

The carboxyalcoyl cellulose is usually an alkali metal salt of a carboxy-alkyl - cellulosic (Comp), the alkyl group having generally up to 3 carbon atoms. In general, these materials are considered water soluble; they have a limited solubility in water and behave as agents against the redeposition of dirt during washing dirty objects. It is preferable to use the water-soluble salts of carboxymethyl cellulose, such as salts of sodium and potassium. The qualities commercial carboxymethyl cellulose sodium having a purity of about 60 to 100 % by dry weight and viscosity low, intermediate or high usable. The degree of substitution of carboxymethyl groups per anhydroglucose unit group in the cellulose molecule is usually about 0.5 to 0.9 and, preferably, about 0.5 to 0.7 in order to achieve highly effective suspending dirt. Said material is used in a small amount, for example 0.1 to 2% about, and, preferably, 0.25 to 1.5%, by weight of the composition.

Hydrogenated caster oil (i.e. caster wax) is used in small amounts, e.g. about 1% by weight 0.1 it, sufficient to prevent separation of the cellulose compound in the body of liquid. It has a melting point of about 84 - 87 °c and is available in a finely divided form with an iodine value of about 6 at most. Other features of the preferred quality are an acid value of at most 0.2% and a saponification value of 17.5 to 18.5 KOH, with a specific gravity of 0, 98 - 1, 00 to 20 °c.

The solids content of the liquid product is usually in the range of about 20 to 60%, and preferably from about 35 to 50 %, by weight. The liquid medium contains water in an amount of 40 to 80% normally sufficient to dissolve the polyphosphate and form a homogenous product by maintaining the cellulose and caster wax in the form of a homogeneous dispersion. The aqueous medium is not alcoholic since it is not necessary to incorporate significant amounts of a lower aliphatic alcohol soluble in water to obtain a substantially homogeneous pourable product.

Liquid detergent which is prepared in any manner appropriate. It is in general preferred to initially an aqueous solution or slurry of the detersive the hydrotropic agent. The hydrotropic agent may be added to the liquid detergent powder or aqueous mixture. The cellulosic material may be similarly added as an aqueous solution or a powder by stirring sufficiently to ensure obtaining uniform mixing with the cellulosic material finely dispersed, for example in molecular or colloidal dispersion. The mixing temperature is not critical and can be used at room or reasonably high ad lib. The polyphosphate is added in powder form or it may be previously dissolved in water, Palcoylol-amide derivatives and caster wax being added subsequently. It and the alcoylol amide solid are preferably added in the form of melt-mixing by stirring to form a homogenous product.

May be added various other compatible ingredients as desired as fragrances, dyes, corrosion inhibitors or tarnish, germicides, bleaching agents, optical brighteners or fluorescent dyes, viscosity modifiers, like other phosphate materials or builder salts can be introduced into the product on the condition that they do not influence substantially the desired results.

The following examples provide additional illustration of the nature of the invention; they are, of course, not limiting. All parts are expressed in approximate percentages by weight, except indicia contrary.

Such as I.

Dodecyl benzene sulfonate sodium 10.0 20.0 tetrasodium pyrophosphate lauric isopropanolamide 5.0 6.5 sodium toluene sulfonate sodium carboxymethyl cellulose castor wax 0.5 0.3 sodium silicate 3.0 water q.s. 100

This product is made by mixing an aqueous solution of dodecyl benzene sulfonate detersive (the dodecyl from propylene tetramer) of a purity of about 88%, the remainder being mainly sodium sulfate as an impurity, with aqueous solutions of the toluene-sulfonate and sodium silicate (ratio of Na₂ 0/Si0₂ of 1/2, 35) to form a homogeneous mixture. Is dissolved in water-carboxymethylcellulose having a purity of about 65% and containing about 0.7 carboxy group per glucose unit so as to form a solution to 2.5 % which are added in the preparation, at room temperature, with stirring. The mixture is heated to about 70 °c with agitation and the pyrophosphate is added in powder form and is mixed until dissolved in the aqueous medium. The lauric isopropanolamide and caster wax are previously melted and added as a mixture to the above solution to 70 °c, stirring to obtain a uniform mixture. Finally the product is cooled to room temperature and added colorant and perfume at will.

This product exhibited satisfactory stability upon aging. It does not show separation after storage for prolonged periods at room temperature and remains substantially homogeneous if subjected to temperature conditions alternately high and low.

Examples of II-III. - Fluids proposed similar to forcefully according to the following formulae:

THE II-III Ingredients %%

Dodecyl - benzene - sulfonate

the sodium 10.0 10.0 20.0 20.0 tetrapotassium pyrophosphate or sodium xylene sulfonate sodium toluene sulfonate 8.0 8.0 - sodium carboxymethyl cellulose sodium silicate 0.5 0.3 - 5.0 5.0 2.9 lauric isopropanolamide castor wax 100,100 0.3 0.5 water q.s.

Applying the same production method as in the example I with the following variants. The solution is added carboxymethylcellulose at sulfonate mixture, with stirring, to 49 °c and the mixture is heated to 70 °c to obtain a homogeneous solution, followed by adding phosphate and mixture of amide and caster wax. The mixture is cooled to 32 °c and then added sodium silicate (ratio of Na ^ the O/SlO ., of 1/2, 58) of formula III in the form of an aqueous solution to 44%, giving 2.1% SiO_{the O} in the finished product. Then it is similarly the