MX2012012239A

MX2012012239A - Process for making a detergent base composition.

Info

Publication number: MX2012012239A
Application number: MX2012012239A
Authority: MX
Inventors: Stephen Joseph Hodson
Original assignee: Procter & Gamble
Priority date: 2010-04-19
Filing date: 2011-04-14
Publication date: 2012-11-23
Also published as: JP5774678B2; BR112012026891A2; EP2561061B2; WO2011133378A1; PL2561061T3; CA2795931C; CA2795931A1; CN102834501A; MX339065B; ES2460921T3; EP2561061A1; ZA201207402B; AR082839A1; EP2561061B1; JP2013525522A

Abstract

A process for making an anhydrous laundry liquid detergent base composition comprising detersive surfactant, the process comprising the steps of: a) providing a pre-neutralized sulphate detersive surfactant syrup wherein at least 50% of the sulphate detersive surfactant is pre-neutralized with an organic neutralizing agent; b) adding a neutralizing agent to the sulphate detersive surfactant syrup; and c) adding a sulphonic detersive surfactant in acid form to the mixture resulting from step b).

Description

PROCESS TO DEVELOP A COMPOSITION BASE DETERGENT FIELD OF THE INVENTION The present invention relates to a process for making a liquid detergent base composition, a detergent comprising a base composition and a method for laundry with the use of the detergent.

BACKGROUND OF THE INVENTION Recent consumer preferences for liquid laundry detergents towards smaller and more concentrated product forms have resulted in liquid detergent formulators having a number of different difficulties. Furthermore, not only do consumers want smaller, compact liquid laundry detergent products, but they also want these compact products to have the same performance as traditional non-compact laundry liquid detergents; which is an extremely difficult need to satisfy for the consumer.

Compact liquid laundry detergent products have less room to incorporate detergent ingredients, which creates great difficulty for the detergent formulator, especially for limiting the levels of bulky detergent ingredients such as surfactants, additives and solvents that may occupy the majority of the formulation space. For the detergent ingredients that are incorporated in these compact laundry liquid laundry detergents, the detergent formulator should greatly improve the effectiveness of these detergent ingredients and the liquid laundry detergent composition in general.

The detergent formulator must ensure that said compact laundry liquid detergents have a good cleaning performance, as well as a good product storage stability profile and desired theological properties to ensure that the consumer can easily handle and dose the product.

An additional problem associated with compact detergents is the manufacturing process. The reduction of ingredients, such as solvents, can result in the formation of unwanted phases in the base composition such as intermediate phases of surfactant that are difficult to process.

Generally, it is preferable to make a base detergent composition that can be diluted to make finished detergent compositions instead of making different finished products from the start. From the point of view of the effectiveness of the process, it would be beneficial to have a common base composition that can be subsequently differentiated to give rise to different products. Generally, this is not possible because the subsequent addition of solvent or differentiating additives subsequent to the base composition would alter the rheology of the composition making it difficult to control.

The purpose of the present invention is to overcome the drawbacks described above.

BRIEF DESCRIPTION OF THE INVENTION In accordance with a first aspect of the invention, there is provided a process for making a laundry detergent liquid and anhydrous base composition. By "anhydrous composition" is meant in the present description, a composition preferably having less than 30%, more preferably less than 20%, and especially less than 10% water by weight thereof. By "base composition" is meant in the present description, a composition that can be used as a finished detergent product or preferably, as a structural unit for a finished detergent product.

The process of the present invention comprises the steps of: a) providing a preneutralized sulfate detergent surfactant syrup, wherein at least 50%, preferably, at least 60%, more preferably at least 70% and, especially, 100% of the sulfate detergent surfactant is preneutralized with an organic neutralizing agent, preferably, with monoethanolamine; b) adding a neutralization agent to the preneutralized sulfate detergent surfactant syrup; Y c) subsequently add a sulfonate detergent surfactant in acid form.

By "preneutralized surfactant" is meant in the present description, a surfactant that has been neutralized before it forms part of the process for making the base detergent composition instead of being neutralized during the process for making the base detergent composition.

Many of the sulfate detergent surfactants are not very stable in the acid form, preferably, they are neutralized just after the acid form is produced. Moreover, the sulfate detergent surfactant, even after it has been neutralized, can be stabilized by the presence of acid. It has been found that by adding the neutralization agent to the preneutralized sulfate detergent surfactant syrup (in addition to the neutralization agent added for preneutralization) before any other acidic material, the stability of the sulfate detergent surfactant is improved.

Step c) is carried out after steps a) and b), thereby the preneutralized sulphate detergent surfactant is protected from the acid by the neutralizing agent.

In a preferred embodiment, the sulfate detergent surfactant is selected from alkyl alkoxylated sulfates, primary alkyl, branched, half chain alkyl sulfates and mixtures thereof. Preferably, the sulfate detergent surfactant comprises an ethoxylated alkyl sulfate, more preferably an ethoxylated C8-18 alkyl sulfate having an ethoxylation degree of 0.5 to 10, preferably 0.5 to 7, more preferably 0.5 to 5 and most preferably from 0.5 to 4.

In preferred embodiments, the sulfate detergent surfactant comprises a mixture of an alkoxylated alkyl sulfate, preferably, a C8-18 ethoxylated alkyl sulfate and a primary, branched, half chain alkyl sulfate; wherein the alkoxylated alkyl sulfate and the primary, half-chain alkyl sulfate are in a weight ratio of at least 2: 1, preferably at least 4: 1, and especially in a ratio of at least 5: 1.

At least 50%, preferably at least 70%, more preferably at least 90%, and especially 00% of the sulfate detergent surfactant present in the syrup has been preneutralized with an organic neutralizing agent. The organic neutralizing agent is preferably an alkanolamine. It can be a primary, secondary or tertiary amine. Monoethanolamine (MEA) is the preferred alkanolamine for use in the present disclosure. The use of an organic neutralizing agent, preferably monoethanolamine, avoids or reduces the use of water (compared to inorganic neutralizing agents) and contributes to the volume reduction of the base composition, as well as to a favorable rheology of the composition resulting base. These two factors (volume reduction and favorable rheology) are critical for the preparation of a compact detergent.

In a preferred embodiment, the preneutralized sulfate detergent surfactant syrup comprises an organic solvent, preferably a non-amino functional solvent. This also contributes to the good rheological profile of the resulting detergent base. Preferred non-amino functional solvents for use in the present disclosure include primary alcohols, glycols and mixtures thereof. An especially preferred non-amino functional solvent is a mixture comprising ethanol and propylene glycol.

In preferred embodiments, the process of the invention comprises the step of adding an organic solvent after step a) and, preferably, before step b). This organic solvent may be the same or different than that in the preneutralized sulfate detergent surfactant syrup. The preferred organic solvent for use in the present disclosure is a non-amino-functional solvent, which includes alcohols, glycols and mixtures thereof. The especially preferred organic solvent to be added between step a) and b) is a mixture comprising ethanol, propylene glycol and diethylene glycol.

The addition of the organic solvent between steps a) and b) further contributes to the reduction of the water in the composition and subsequently to the reduction in volume and to a favorable rheology of the resulting base composition.

The neutralizing agent of step b) can be selected from organic neutralizing agents, inorganic neutralizing agents and mixtures thereof. This neutralizing agent may be the same or different than that in the preneutralized sulfate detergent surfactant syrup. This neutralization agent is preferably an alkanolamine, more preferably monoethanolamine (MEA), which provides the benefits mentioned above.

In preferred embodiments, more than 50%, preferably, more than 60% and, especially, more than 70% of the ammonium surfactant in the base composition (ie, sulfate and sulfonate detergent surfactant) is sulfate detergent surfactant. In a preferred embodiment, the sulfate detergent surfactant and the sulfonate detergent surfactant are in a weight ratio of about 4: 1 to about 1: 1.

The detergent base preferably comprises from 0% to 5%, more preferably less than 2%, and especially less than 1% by weight of the citric acid base and any other material having a large associated hydration sphere. with them. The detergent base supplies similar amounts of active ingredients to those supplied in traditional detergents in a smaller dose size and because the water content is lower, some chemistry that is not necessarily compatible with or in products with high water content can become compatible in minor liquid products.

According to a second aspect of the invention, there is provided a process for making a laundry liquid detergent which comprises subsequently adding to the base composition obtainable and obtained, preferably, by the process of the first aspect of the invention of about 5 hours. to approximately 20% water by weight of the detergent. The base composition obtainable and obtained, preferably, by the process of the first aspect of the invention is strong enough to withstand the addition of water without negatively influencing the rheology profile of the base composition.

In accordance with an aspect of the product of the invention, a laundry detergent is provided that can be obtained and, preferably, is obtained in accordance with the process of the first or second aspect of the invention.

The detergent is very compact, thereby allowing the supply of a very small dose (with respect to volume) that provides good cleaning results. Typical volumes of compact detergents are below 30 ml, more preferably below 25 ml. The detergent also has a good rheological profile.

In accordance with the last aspect of the invention, a method for washing a fabric is provided; the method comprises the step of contacting the fabric in a washing machine with a washing liquor comprising from about 0.2 to about 1 g / l, preferably, from about 0.3 to about 0.8 g / l of the detergent of the invention.

DETAILED DESCRIPTION OF THE INVENTION The present invention considers a process for preparing a base detergent composition, preferably a liquid laundry detergent composition for base laundry. In addition, consider a detergent composition that can be obtained in accordance with the process of invention and a method for washing a fabric with the use of the detergent composition. The process results in a base composition that is very versatile in terms of subsequent addition of ingredients and presents a good rheological profile. The base can be used to generate a concentrated detergent, i.e., a detergent with a high level of active ingredients or it can be further diluted if desired.

Process to elaborate a base composition The process begins with a preneutralized sulfate detergent surfactant syrup. Preferably, the syrup comprises an organic solvent, more preferably a non-amino functional solvent.

Optionally, an organic solvent is added to the preneutralized sulfate detergent surfactant syrup and then the neutralization agent is added. Once the ingredients are in a mixing tank, the mixing begins and the rest of the ingredients are added with agitation, the rest of ingredients includes a rinse aid, a nonionic surfactant, a dispersing polymer, a surfactant-enhancing polymer, a chelator, etc. The temperature of the mixture is below 37 ° C (this is achieved by cooling if the temperature of the mixture is above 37 ° C). Finally, the sulfonic detergent surfactant is added to create the detergent base. The detergent base can be converted into a fully formulated detergent by the addition of other detergent ingredients such as enzymes and suds suppressors.

The preferred sulfate detergent surfactant for use in the present disclosure includes alkoxylated and / or non-alkoxylated alkyl sulfate materials.

The alkoxylated alkyl sulfate materials comprise ethoxylated alkyl sulfate surfactants. These materials, also known as alkyl ether sulfates or polyethoxylated alkyl sulfates, are those corresponding to the formula: R'-0- (C2H40) n-S03M wherein R 'is a C8-C2o alkyl group, n is from about 1 to 20, and M is a salt-forming cation. Preferably, R 'is C 1 -C 18 alkyl and n is from about 1 to 15. Most preferably, R' is a C 12 -C 16 alkyl and n is from about 1 to 6.

Alkylether sulfates will generally be used in the form of mixtures that include lengths of variable R 'chains and varying degrees of ethoxylation. Frequently, these mixtures will inevitably contain, in addition, some non-ethoxylated alkyl sulfate materials, ie, surfactants of the ethoxylated alkyl sulfate formula mentioned above, wherein n = 0. In addition, the non-ethoxylated alkyl sulphates can be added separately to the compositions of this invention and used in or as any anionic surfactant component that may be present.

Preferred non-alkoxylated alkyl sulfate materials include medium chain alkyl sulfate surfactants having an average carbon chain length of about 14 to about 17 (MBAS surfactants). They are known to provide good cleaning properties. MBAS surfactants with a carbon chain length of about 16 to 17 (also known as "HSAS surfactants") generally provide better cleaning than those of other chain lengths.

Preferably, the preneutralized sulfate detergent surfactant comprises an ethoxylated alkyl sulfate of Ce-ie having an average degree of ethoxylation of 0.5 to 10, preferably 0.5 to 7, more preferably 0.5 to 5, and most preferably 0.5 to 6. At least 50%, preferably, at least 70% and, especially, 100% of the surfactant has been neutralized with monoethanolamine. In some embodiments, the preneutralized sulfate detergent surfactant comprises an HSAS surfactant. In other embodiments, the preneutralized sulfate detergent surfactant comprises a mixture of an ethoxylated alkyl sulfate with an HSAS surfactant, preferably, the ethoxylated alkyl sulfate and the HSAS surfactant are in a weight ratio of at least 2: 1, more preferably at least 5: 1 and, especially, at least 10: 1. Preferably, at least 50%, more preferably at least 70% and, especially, at least 90% of the sulfate detergent surfactant is neutralized with monoethanolamine.

Preferably, the preneutralized sulfate detergent surfactant syrup comprises a non-amino-functional solvent. As used in the present description, "solvent without amino functional groups" is related to any solvent that does not contain amino functional groups. The non-aminofunctional solvent includes, for example: C1-C8 alkanes such as methanol, ethanol and / or propanol and / or 1-ethoxypentanol, C2-C6 diols, C3-C8 alkylene glycols, lower alkyl ethers of mono C3-C8 alkylene glycols, dialkyl glycol ether, low molecular weight polyethylene glycols, C3-C9 triols such as glycerin and mixtures thereof. More specifically, solvents without amino functional groups are liquid at room temperature and pressure (i.e., 21 ° C and 101.3 kPa (1 atmosphere)), and comprise carbon, hydrogen and oxygen. If present, the non-amino-functional solvents may comprise from about 0% to about 25%, more specifically, from about 1 to about 20%, and even more specifically, from about 5% to about 15% by weight of the syrup. The addition of the non-aminofunctional solvent would contribute to the favorable rheological profile of the base composition.

The preferred sulfonic detergent surfactant is an alkylbenzene sulphonic acid of Cio-16, preferably, an alkylbenzene sulfonic acid of Cn-14. Preferably, the alkyl group is linear, and these linear alkylbenzene sulfonates are known as "LAS". The alkylbenzene sulfonates, in particular the LAS, are well known in the art. industry. Such surfactants and their preparation are described, for example, in U.S. Pat. no. 2,220,099 and 2,477,383.

Detergent Composition Detergent surfactant Compositions suitable for use in the present disclosure comprise from 5% to 70% by weight, preferably from 10% to 60% by weight, more preferably from 20% to 50% by weight of a specific class of detergent surfactant components. Said essential detergent surfactant component comprises anionic surfactants (sulphonic and sulfate detergent surfactants as described above), nonionic surfactants, or combinations of these two types of surfactants. Preferably, the detergent comprises from about 10% to about 40%, preferably, from about 15% to 30% by weight of the detergent of an alkoxylated sulfate detergent surfactant. Preferably, the detergent comprises from 5% to 20%, more preferably from 7 to 15% by weight of the detergent of a sulfonate detergent surfactant. Preferably, the detergent comprises from 0.1% to 10%, more preferably from 1 to 5% by weight of the detergent of a non-ionic detergent surfactant. Preferably, the detergent comprises from 0 to 10%, more preferably from 1 to 5% by weight of the detergent of a fatty acid.

Suitable anionic surfactants useful in the present invention can comprise any of the types of conventional anionic surfactants commonly used in liquid detergent products. These include alkoxylated fatty alcohols, block polymers of ethylene oxide (EO) -propylene oxide (PO), and amine oxide surfactants. Preferred for use in the liquid detergent products of the present invention are those nonionic surfactants which are normally liquid.

Preferred nonionic surfactants for use in the present invention include the nonionic surfactants of alkoxylated alcohols. The alkoxylated alcohols are materials of the following formula: R1 (CmH2mO) nOH wherein R1 is a C8-Ci6 alkyl group) m is 2 to 4 and n is in the range of about 2 to 12.

Preferably, R1 is an alkyl group, which may be primary or secondary, containing from about 9 to 15 carbon atoms, more preferably from about 10 to 14 carbon atoms. Further, it is preferred that the alkoxylated fatty alcohols are ethoxylated materials containing about 2 to 12 ethylene oxide entities per molecule, with a higher preference, between 3 and 10 ethylene oxide entities per molecule.

The alkoxylated fatty alcohol materials useful in the liquid detergent compositions herein will often have a hydrophilic-lipophilic balance (HLB) ranging from about 3 to 17.

More preferably, the HLB of this material will vary from about 6 to 15, more preferably from about 8 to 15. The non-ionic alkoxylated fatty alcohol surfactants have been marketed under the tradenames of Neodol and Dobanol by Shell Chemical Company.

Another type of nonionic surfactant that is liquid and can be used in the compositions of this invention comprises the block polymers of ethylene oxide (EO) -propylene oxide (PO). These materials are well-known non-ionic surfactants distributed under the trade name Pluronic. They are formed by adding blocks of ethylene oxide entities at the ends of the polypropylene glycol chains to regulate the properties of the surface active of the resulting block polymers. EO-PO block polymeric surfactants of this type are described in greater detail in Davidsohn and Milwidsky; Svnthetic Deterqents, seventh edition .; Longman Scientific and Technical (1987) on pages 34-36 and pages 189-191 and in US Pat. UU no. 2,674,619 and 2,677,700.

Another suitable type of nonionic surfactant useful in the present invention comprises the amine oxide surfactants. Amine oxides are materials to which they are frequently referred to in the industry as non-ionic "semipolar". The amine oxides have the formula: R (EO) x (PO) and (BO) zN (0) (CH2R ') 2-qH20. In this formula, R is a relatively long chain hydrocarbyl entity which may be saturated or unsaturated, linear or branched and may contain from 8 to 20 and, preferably, from 10 to 16 carbon atoms, and which, more preferably, is a Ci2-C16 primary alkyl R 'is a short chain entity that is preferably selected from hydrogen, methyl and -CH2OH. When x + y + z is different from 0, EO is ethyleneoxy, PO is propyleneoxy and BO is butyleneoxy. The amine oxide surfactants are illustrated by the C12-14 alkyldimethylamine oxide. Preferably, the detergent of the invention comprises from about 0.5% to about 5%, more preferably from 0.8% to 3% by weight of the detergent of a surfactant of amine oxide.

In the liquid detergent compositions of the present disclosure, the essential detergent surfactant component may comprise combinations of anionic and nonionic surfactant materials. When this is the case, the weight ratio of anionic to nonionic surfactant is at least 2: 1, preferably 5: 1, and especially 10: 1. The detergent composition comprises from 0% to 5%, more preferably less than 2% and, especially, less than 1% by weight of the citric acid detergent. In addition, it is preferred that the detergent composition has a low level (ie, below 5% and more preferably below 2% by weight of the detergent) or is free of fatty acid.

Preferably, the liquid detergent compositions of the present invention have a pH of from about 7 to about 9, more preferably from 8 to 8.5, measured in 5% of an aqueous solution at 20 ° C.

Additional ingredients for laundry The detergent compositions of the present invention, preferably in liquid form, comprise from 0.1% to 30% by weight, preferably, from 0.5% to 20% by weight, more preferably from 1% to 10% by weight of one or more specific types of additional laundry ingredients. Said additional ingredients for laundry can be selected from detergent enzymes, additives, chelants, dirt-removing polymers, dirt-suspending polymers, optical brighteners, dye transfer inhibiting agents, bleaches, bleaching agents, foam suppressants, beneficial agents for the care of fabrics, solvents, stabilizers, regulators, structuring agents, dyes and perfumes and combinations of these types of auxiliaries. All these materials are of the kind conventionally used in laundry detergent products.

The composition preferably comprises from 1 to 10% by weight of the polymer composition. Some suitable polymers include dispersing polymers such as polyamines, preferably, polyethylene imines, most preferably alkoxylated polyethylene imines, preferably, the composition comprises from about 1% to about 5% by weight of the composition of an alkoxylated polyethylene imine.

Other preferred polymers include surfactant enhancing polymers. The composition may comprise a surfactant-enhancing polymer. Preferred polymers are alkoxylated amphiphilic fat-cleansing polymers and / or random graft copolymers. By aliphatic amphiphilic fat-cleansing polymers is meant any alkoxylated polymer having hydrophilic and hydrophobic properties balanced in such a manner as to remove grease particles from the fabrics and from the surfaces. The specific embodiments of the aliphatic amphiphilic fat-cleansing polymers suitable for use in the present disclosure comprise a core structure and a plurality of alkoxylated groups attached to that core structure.

The core structure may comprise a polyalkyleneimine structure comprising, in condensed form, repeating units of the formulas (I), (II), (III) and (IV): O (II). (lli) (IV) where # denotes, in each case, half of a bond between a nitrogen atom and the unbound position of a group A1 of two adjacent repeating units of formulas (I), (II), (III) or (IV); * indicates, in each case, half of a link to one of the alkoxylate groups; and A1 is independently selected from a linear or branched C2-C6 alkylene; wherein the polyalkyleneimine structure consists of 1 repeating unit of the formula (I), x repeating units of the formula (II), and repeating units of the formula (III) and y + 1 repeating units of the formula (IV), wherein x and y have, in each case, a value in the range of 0 to about 150; where the weighted average molecular weight, Mw, of the polyalkyleneimine core structure is a value ranging from about 60 to about 10,000 g / mol.

The core structure may alternatively comprise a polyalkanolamine structure of the condensation products of at least one compound selected from N- (hydroxyalkyl) amines of the formulas (I.a) and / or (I.b), wherein A is independently selected from C 1 -C 6 alkylene; R1, Ru, R2, R2 *, R3, R3 *, R4, R4 *, R5 and R5 * are independently selected from hydrogen, alkyl, cycloalkyl or aryl, wherein the last three radicals mentioned may be optionally substituted; and R6 is selected from hydrogen, alkyl, cycloalkyl or aryl, wherein the last three radicals mentioned may be optionally substituted.

The plurality of alkyleneoxy groups attached to the core structure is independently selected from alkyleneoxy units of the formula (V) (V) wherein * indicates, in each case, half a bond to the nitrogen atom of the repeating unit of formulas (I), (II) or (IV); A2, in each case, is independently selected from 1,2-propylene, 1,2-butylene and 1,2-isobutylene; A3 is 1, 2-propylene; R, in each case, is independently selected from hydrogen and CrC 4 alkyl; m has an average value in the range of 0 to about 2; n has an average value in the range of about 20 to about 50; and p has an average value in the range of about 10 to about 50.

The specific embodiments of the alkoxylated amphiphilic fat-cleansing polymers can be selected from alkoxylated polyalkyleneimines having an internal block of polyethylene oxide and an outer block of polypropylene oxide, and the degree of ethoxylation and the degree of propoxylation is neither greater nor lesser than the specific limiting values. The specific embodiments of the alkoxylated polyalkyleneimines according to the present invention have a minimum ratio of polyethylene blocks to the polypropylene (n / p) blocks of about 0.6 and a maximum of about 1.5 (x + 2y + 1) 2. has found that the alkoxylated polyalkinimines have an n / p ratio of about 0.8 to about 1.2 (x + 2y + 1) 1 2, possess especially beneficial properties.

The alkoxylated polyalkyleneimines according to the present invention have a backbone consisting of nitrogen atoms of primary, secondary and tertiary amines which are linked together by alkylene radicals A and are randomly arranged. Reference is made to the primary amino entities beginning or ending the main chain and the secondary chains of the polyalkyleneimine backbone and whose remaining hydrogen atoms are subsequently replaced by alkyleneoxy units as repeating units of Formulas (I) or (IV) ), respectively. Reference is made to secondary amino entities whose remaining hydrogen atom is subsequently replaced by alkyleneoxy units as repeating units of Formula (II). Reference is made to the tertiary amino entities branching the main chain and the secondary chains as repeating units of Formula (III).

Since cyclization can occur in the formation of the polyalkyleneimine backbone, it is also possible that the cyclic amino entities are present to a lesser degree in the backbone. These polyalkyleneimines containing cyclic amino entities are, of course, alkoxylated in the same manner as those consisting of non-cyclic primary and secondary amino entities.

The polyalkyleneimine backbone consisting of the nitrogen atoms and the A1 groups has a weight average molecular weight Mw of from about 60 to about 10,000 g / mol, preferably from about 100 to about 8,000 g / mol and, more preferably , from about 500 to about 6,000 g / mol.

The sum (x + 2y + 1) corresponds to the total number of alkyleneimine units present in a single polyalkyleneimine backbone and, thus, is directly related to the molecular weight of the polyalkyleneimine backbone. However, the values given in the specification refer to the numerical average of all the polyalkyleneimines present in the mixture. The sum (x + 2y + 2) corresponds to the total number of amino groups present in a single polyalkyleneimine backbone.

The radicals A1 connecting the amino nitrogen atoms can be identical or different, linear or branched C2-C6 alkylene radicals, such as 1,2-ethylene, 1,2-propylene, 1,2-butylene, 1,2-isobutylene , 1,2-pentanediyl, 1,2-hexanediyl or hexamethylene. A preferred branched alkylene is 1,2-propylene. Preferred linear alkyls are ethylene and hexamethylene. A more preferred alkylene is 1,2-ethylene.

The hydrogen atoms of the primary and secondary amino groups of the polyalkyleneimine backbone are replaced by alkyleneoxy units of Formula (V).

(V) In this formula, preferably, the variables have one of the meanings given below: A2, in each case, is selected from 1,2-propylene, 1,2-butylene and 1,2-isobutylene; preferably, A2 is 1, 2-propylene. A3 is 1, 2-propylene; R, in each case, is selected from hydrogen and C 1 -C 4 alkyl, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and tert-butyl; preferably, R is hydrogen. The index m, in each case, has a value from 0 to approximately 2; preferably, m is 0 or about 1; more preferably, m is 0. The index n has an average value in the range of about 20 to about 50, preferably, in the range of about 22 to about 40, and, more preferably, in the range of about 24 to about 30. The index p has an average value in the range of about 10 to about 50, preferably, in the range of about 11 to about 40 and, more preferably, in the range of about 12 to about 30.

Preferably, the alkylenoxy unit of Formula (V) is a non-random sequence of alkoxylate blocks. By non-random sequence it is understood that the [-A2-0-] m is first added (ie, closer to the bond with the nitrogen atom of the repeating unit of Formula (I), (II), or (III)), second, [-CH2-CH2-0-] n is added, and third , [A3-0-] p. This orientation provides the alkoxylated polyalkyleneimine of an internal block of polyethylene oxides and an outer block of polypropylene oxides.

The substantial part of these alkylenoxy units of Formula (V) is formed by the ethyleneoxy units - [CH2-CH2-O)] n- and the propyleneoxy units - [CH2-CH2 (CH3) -0] p-. In addition, alkyleneoxy units may having, in addition, a small proportion of propyleneoxy or butyleneoxy- [A2-0] m- units, that is, the polyalkyleneimine backbone saturated with hydrogen atoms can initially react with small amounts of up to about 2 moles, especially about 0.5. to about 1.5 moles, in particular, from about 0.8 to about 1.2 moles, of propylene oxide or butylene oxide per mole of NH portions present, ie, incipiently alkoxylated.

This initial modification of the polyalkyleneimine backbone makes it possible, if necessary, to reduce the viscosity of the reaction mixture during the alkoxylation. However, the modification does not generally affect the performance properties of the alkoxylated polyalkyleneimine and, therefore, is not a preferred measure.

Preferably, the composition comprises from about 0.1% to about 5%, more preferably from about 0.25% to about 2.5% by weight of the composition of an alkoxylated fat-cleansing polymer.

Suitable graft random copolymers typically comprise: (i) hydrophilic backbone comprising monomers selected from the group consisting of unsaturated C 1 -C 6 carboxylic acids, ethers, alcohols, aldehydes, ketones, esters, sugar units, alkoxy units, maleic anhydride, saturated polyalcohols, such as glycerol, and mixtures thereof; and (ii) hydrophobic side chain (s) selected from the group consisting of C4-C25 alkyl group, polypropylene, polybutylene, vinyl ester of a saturated Ci-C6 monocarboxylic acid, alkyl Ci.C6 acid ester acrylic or methacrylic, and mixtures of these.

The polymer preferably has the general formula: wherein X, Y and Z are cap units selected independently of H or a Ci_6 alkyl; each R1 is independently selected from methyl and ethyl; each R2 is independently selected from H and methyl; each R3 is, independently, a C-M alkyl; and each R4 is independently selected from pyrrolidone and phenyl groups. The weight average molecular weight of the polyethylene oxide backbone is typically from about 1000 g / mol to about 18,000 g / mol, or from about 3000 g / mol to about 13,500 g / mol, or from about 4000 g / mol. mol to approximately 9000 g / mol. The value of m, n, o, p and q is selected such that the suspended groups comprise, by weight of the polymer, at least 50%, or from about 50% to about 98%, or from about 55% to about 95% , or from about 60% to about 90%. The polymer useful in the present disclosure typically has a weight average molecular weight of from about 1000 to about 00,000 g / mol, or preferably, from about 2500 g / mol to about 45,000 g / mol, or from about 7500 g / mol to about 33,800 g / mol, or from about 10,000 g / mol to about 22,500 g / mol.

Example Process to make a base detergent: A 10 liter batch tank with an aspect ratio of approximately 1.3 (height to diameter) is filled with an impeller mixer and loaded with the following: 1) Preneutralized sulfate detergent surfactant syrup composed of MEA: C12- 5 E03S03H, ethanol and propylene glycol 2) Preneutralized sulfate detergent surfactant syrup composed of MEA: C16-17, highly soluble alkyl sulfate, ethanol and propylene glycol 3) organic solvent composed of ethanol, propylene glycol and diethylene glycol. 4) Neutralization agent (monoethanolamine) Agitation begins at this point and continues with the additions 5) brightener premix composed of brightener chromophore active, C12-14 (EO) gOH, non-ionic surfactant, monoethanolamine and water 6) Premix of MEA-boric acid composed of boric acid, monoethanolamine and water 7) amine oxide composed of C12-14 dimethylamine N-oxide and water 8) ethoxylated polyamine dispersant polymer (80% by weight of active, 20% by weight of water) 9) Alkoxylated amphiphilic polymer fat cleanser (100% active) 10) premix of diethylenetriaminepentaacetic acid and sodium salt (DTPA) (50% by weight of DTPA and 50% by weight of water) 11) premix of 1,2-dihydroxybenzene-3,5-disulfonic acid (50% by weight of active) 12) Premix of calcium formate (10% by weight of active) Cooling is applied if necessary during the following addition steps to maintain a maximum temperature of less than 37 ° C 13) Fatty acid of C 12-18 14) HLAS (alkylbenzene sulfonate) of C11.8 Process to make a detergent composition The base detergent is converted to finished detergent by continuous stirring and the addition of: 15) water 16) perfume 17) tonalizing dye premix (0.32% active chromophore) 18) enzyme premix 19) foam suppressor polymer 20) structuring agent 21) mica pearl particles The detergent presents a good rheological profile and is very stable. The dimensions and values described in the present description should not be construed as strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions will mean both the aforementioned value and a functionally equivalent range that encompasses that value. For example, a dimension described as "40 mm" refers to "approximately 40 mm"

Claims

NOVELTY OF THE INVENTION CLAIMS

1. A process for making a liquid and anhydrous laundry detergent base composition comprising a detergent surfactant; the process comprises the steps of: a) providing a preneutralized sulfate detergent surfactant syrup, wherein at least 50% of the sulfate detergent surfactant is preneutralized with an organic neutralizing agent; b) adding a neutralizing agent to the sulfate detergent surfactant syrup; and c) adding a sulfate detergent surfactant in acid form to the mixture resulting from step b).

2. The process according to claim 1, further characterized in that the organic neutralizing agent is an alkanolamine, preferably monoethanolamine.

3. The process according to claim 1 or 2, further characterized in that the sulfate detergent surfactant is selected from alkoxylated alkyl sulfates, primary alkyl, branched, half chain alkyl sulfates and mixtures thereof.

4. The process according to the preceding claim, further characterized in that the sulfate detergent surfactant comprises at least 50% alkoxylated alkyl sulfate.

5. The process according to any of the preceding claims, further characterized in that the preneutralized sulfate detergent surfactant syrup comprises an organic solvent.

6. The process according to any of the preceding claims, further characterized in that the neutralizing agent of step b) is selected from organic neutralizing agents, inorganic neutralizing agents and mixtures thereof.

7. The process according to any of the preceding claims; further characterized in that the process comprises the step of adding an organic solvent after step a) and, preferably, before step b).

8. The process according to any of the preceding claims, further characterized in that the sulfate detergent surfactant and the sulfate detergent surfactant are in a weight ratio of about 4: 1 to about 1: 1.

9. A process for making a liquid laundry detergent, wherein the process comprises adding to the composition that can be obtained according to the process of any of the preceding claims from about 5 to about 20% water.

10. A detergent that can be obtained in accordance with the process according to any of the preceding claims.

11. A detergent according to the preceding claim, further characterized in that it has a pH of 8 to 9 as measured in a 5% aqueous solution at 20 ° C.

12. A method for washing a fabric, wherein the method comprises the step of contacting the fabric in a washing machine with a wash liquor comprising from about 0.2 to about 1 g / l of a detergent composition according to claim 10.