Solid laundry composition

Abstract

The present invention relates to a solid laundry detergent composition containing ethoxylated nonionic surfactant. It is thus desired to provide a solid laundry detergent composition which provides for good cleaning performance and desired sensorial benefits. It has been surprisingly found that a solid laundry detergent composition having an anionic surfactant comprising sulphonate surfactant along with specific secondary alcohol based nonionic surfactant improves the stain removal performance and provides good greasy / oily stain removal performance, particularly in cold water conditions. It further provides overall detergency performance and provides whiteness maintenance on fabrics. Preferably the composition including an amphoteric surfactant.

Description

[0001]P0000295EP CPL 1 SOLID LAUNDRY COMPOSITION Field of the Invention 5 The present invention relates to a solid laundry detergent composition, more particularly it relates to a solid laundry detergent composition containing an ethoxylated nonionic surfactant. Background of the Invention Laundry detergent composition have for many years formulated having an anionic sulphonate10 and / or a sulfate surfactant. Particularly solid laundry detergent composition include sulphonate surfactant preferably along with sulphate surfactant for providing cleaning performance and desired sensorial benefits. 15 With changing laundry habits, consumers these days are shifting towards more sustainable washing habits which requires reduced consumption of energy, water, and detergent active. Solid detergent composition needs to be re-designed to meet these changing habits while still providing consumers a detergent composition which is effective on a spectrum of different 20 stains and soils. In the past this has been achieved by mixing different surfactants which are broadly effective in cleaning performance. One area which requires careful selection of surfactants is when the detergent composition needs to provide effective removal of stubborn greasy / oily stains. The inclusion of nonionic surfactant to improve the effectiveness of greasy / oily stains is known to give limited benefits towards removal of such stains. 25 This gets even more challenging as consumers now desire to get improved cleaning performance at low wash temperature of 30°C or even lower. Yet another consumer interest is in detergent composition which in addition to removing the stubborn stains such as greasy and oily stains also have the ability to prevent redeposition of 30 the soils or the breakdown products of the soils and thus providing overall good cleaning performance. US2009 / 0281010 A1 (The Dial Corporation) discloses an eco-friendly liquid laundry detergent composition having non-petroleum anionic and nonionic surfactants which exhibits good stain35 removal and whiteness retention. P0000295EP CPL 2 WO 2023 / 025744 A1 (Unilever) discloses a solid laundry composition which includes nonionic surfactant and sulphate surfactant and provides for maintaining or sustaining good bacteria and commensals in the skin microbiome. 5 US 2023 / 265365 A1 (Bullivant Timothy) discloses a water-soluble unit dose article comprising a granular laundry composition which provides good suds generation. The granular laundry composition includes a surfactant system comprising linear alkyl benzene sulphonate and alkyl alkoxylated alcohol having an average degree of alkoxylation of from 1 to 10. 10 WO 2022 / 162062 A1 (Unilever) discloses a solid laundry detergent composition which includes an anionic surfactant, nonionic alkoxylated surfactant and amphoteric surfactant and provides for good cleaning profile and fabric care profile and has low carbonate levels and silicate levels. WO 2019 / 095089 A1 (Procter & Gamble) discloses a granular laundry detergent composition 15 which includes anionic surfactant and C12 to C15 ethoxylated alcohol with 7 to 9 EO groups and provides antimicrobial benefit. It is thus desired to provide a solid laundry detergent composition which provides for good cleaning performance and desired sensorial benefits. 20 It is also desired to provide a solid laundry detergent composition which provides for good cleaning performance under sustainable laundering conditions which involves reduced consumption of energy, water, and detergent active. 25 Summary of the Invention It has been surprisingly found that a solid laundry detergent composition having an anionic surfactant comprising sulphonate surfactant along with specific secondary alcohol based nonionic surfactant improves the stain removal performance and provides good greasy / oily stain removal performance, particularly in cold water conditions. It further provides overall 30 detergency performance and provides whiteness maintenance on fabrics. Preferably the composition including an amphoteric surfactant. Advantageously the present invention provides good greasy / oily stain removal performance in a 35 low pH composition. P0000295EP CPL 3 According to a first aspect, the present invention provides a solid laundry composition comprising: i) an anionic surfactant comprising a sulphonate surfactant; and, 5 ii) an alkyl alkoxylated secondary nonionic surfactant; wherein the alkyl alkoxylated secondary nonionic surfactant has a general formula (I) (I) wherein n is at least 1 where n1is at least 1 10 where n + n1ranges from 8 to 15 x is a real number from 0 to 15 y is a real number from 1 to 20. According to a second aspect, the present invention provides a method of improving the stain 15 removal performance of solid laundry detergent composition by incorporating an anionic surfactant and an alkyl alkoxylated secondary nonionic surfactant; wherein the nonionic surfactant has a general formula (I) according to the first aspect of the present invention. Detailed Description of the Invention 20 According to a first aspect of the present invention disclosed is a solid laundry detergent composition comprising an anionic surfactant comprising a sulphonate surfactant and an alkyl alkoxylated secondary nonionic surfactant and preferably an amphoteric surfactant. Surfactant 25 According to a first aspect of the present invention, the solid laundry detergent composition includes an anionic surfactant and a nonionic surfactant. Suitable nonionic and anionic surfactants may be chosen from the surfactants described "Surface Active Agents" Vol.1, by Schwartz & Perry, Interscience 1949, Vol.2 by Schwartz, 30 Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing Confectioners Company or in "Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981 or in Anionic Surfactants: Organic Chemistry edited by Helmut W. Stache (Marcel Dekker 1996). P0000295EP CPL 4 Anionic surfactant The solid laundry detergent composition includes an anionic surfactant comprising a sulphonate surfactant. Preferably the sulphonate surfactant is an alkyl aryl sulphonate surfactant. More 5 preferably the alkyl aryl sulphonate surfactant has a linear alkyl group comprising from C10to C22alkyl group, more preferably from C10to C18alkyl group, more preferably from C10to C16alkyl group, still more preferably from C10 to C13 alkyl group. Sulphonate surfactant: Preferably the sulphonate surfactant is an alkyl benzene sulphonate 10 surfactant. Preferably the alkyl chain in the alkyl benzene sulphonate is straight or branched, more preferably linear. Preferably the sulphonate surfactant is a linear alkyl benzene sulphonate with a C10 to C18 alkyl group, still preferably C10 to C14 alkyl group and most preferably C10 to C13 linear alkyl benzene sulphonate. Preferably the higher linear alkyl benzene sulfonate is a sodium alkylbenzene sulfonate surfactant (LAS), which preferably has a straight 15 chain alkyl radical of average length of about 11 to 13 carbon atoms. Suitable alkyl benzene sulphonate (LAS) is obtainable, preferably obtained, by sulphonating commercially available linear alkyl benzene (LAB); suitable LAB includes low 2-phenyl LAB, other suitable LAB includes high 2-phenyl LAB, such as those supplied by Sasol under the tradename Hyblene®. 20 Preferably C10 to C15 alkyl benzene sulfonates (LAS), still preferably C10 to C14 alkyl benzene sulfonates (LAS), still preferably the benzene sulfonate (LAS) has at least 50 wt.% of C12 alkyl benzene sulfonate, still preferably 80 wt.% C12 alkyl benzene sulfonates. The alkyl benzene sulphonate is preferably in the salt form with the cation selected from alkali metal, alkaline earth metal or alkanolamine. Preferably alkali metal selected from sodium or potassium, most25 preferably sodium. Preferably the solid laundry composition includes from 1 wt.% to 50 wt.% alkyl aryl sulphonate surfactant. More preferably the alkyl aryl sulphonate surfactant is linear alkyl benzene sulphonate surfactant. Preferably the amount of linear alkyl benzene sulphonate surfactant 30 ranges from 1 wt.% to 50 wt.%, still preferably from 5 wt.% to 50 wt.%, more preferably 8 wt.% to 50 wt.%, still more preferably from 10 wt.% to 50 wt.%. Still preferably the amount of linear alkyl benzene sulphonate surfactant is preferably in an amount ranging from 1 wt.% to 40 wt.%, still preferably from 5 wt.% to 40 wt.%, more preferably 8 wt.% to 40 wt.%, still more preferably from 10 wt.% to 40 wt.%. Preferably the amount of linear alkyl benzene sulphonate surfactant in 35 the solid laundry composition is not less than 1 wt.%, still preferably not less than 5 wt.%, more P0000295EP CPL 5 preferably not less than 8 wt.%, still more preferably not less than 10 wt.%, but typically not more than 45 wt.%, preferably not more than 40 wt.% or still preferably not more than 30 wt.%. Other suitable sulphonate surfactants other than alkyl aryl sulphonate surfactant include methyl 5 ester sulphonates, alpha olefin sulphonates, modified alkylbenzene sulfonate (MLAS) as discussed in WO 99 / 05243, WO 99 / 05242 and WO 99 / 05244 and mixtures thereof. Sulphate surfactant: Preferably the solid laundry composition may include one or more other anionic surfactant. Preferably the anionic surfactant other than the sulphonate surfactant is a10 sulphate surfactant. Suitable sulphate surfactants include alkyl sulphate, preferably C8 to C18 alkyl sulphate, or predominantly C12 to C18 alkyl sulphate. Preferably the sulphate surfactant may be an alkyl alkoxylated sulphate surfactant. The alkyl sulphate, alkyl alkoxylated sulphate may be linear or branched, substituted or un-substituted. The alkyl sulphate, alkyl alkoxylated sulphate and alkyl benzene sulphonate surfactant may be derived from petrochemical material,15 biomaterial, or a waste material. Specific sulphated anionic surfactants which can be used in the solid laundry composition of the present invention include sulphated ethoxylated and un-ethoxylated fatty alcohols, preferably linear primary or secondary monohydric alcohols with C10 to C18, preferably C12 to C16, alkyl 20 groups and, if ethoxylated, on average from 1 to 15, preferably 3 to 12 moles of ethylene oxide (EO) per mole of alcohol, and sulphated ethoxylated alkylphenols with C8 to C16 alkyl groups, preferably C8 to C9 alkyl groups, and on average from 4 to 12 moles of EO per mole of alkyl phenol. A preferred sulphate detersive surfactant is alkyl alkoxylated sulphate, preferably alkyl ethoxylated sulphate, preferably a C8 to C18 alkyl alkoxylated sulphate, preferably a C8 to C18 25 alkyl ethoxylated sulphate, preferably the alkyl alkoxylated sulphate has an average degree of alkoxylation of from 0.5 to 20, preferably from 0.5 to 10, preferably the alkyl alkoxylated sulphate is a C8to C18alkyl ethoxylated sulphate having an average degree of ethoxylation of from 0.5 to 10, preferably from 0.5 to 5, more preferably from 0.5 to 3 and most preferably from 0.5 to 1.5. 30 Nonlimiting examples of sulphate anionic surfactants useful herein include: C10to C20primary, branched chain and random alkyl sulfates (AS); C10to C18secondary (2,3) alkyl sulfates; C10to C18alkyl alkoxy sulfates (AES) wherein x is from 1-30; mid-chain branched alkyl sulfates as discussed in US 6,020,303 and US 6,060,443; mid-chain branched alkyl alkoxy sulfates as35 discussed in US 6,008, 181 and US 6,020,303. P0000295EP CPL 6 Rhamnolipids: Preferably the solid laundry composition includes a rhamnolipid biosurfactant. Preferably the rhamnolipid is a mono-rhamnolipids, di-rhamnolipids or mixtures thereof. Preferably the mono-rhamnolipids has a single rhamnose sugar ring. Preferably the di- 5 rhamnolipids have two rhamnose sugar rings. In the case of rhamnolipids, throughout this patent specification, the prefixes mono- and di-are used to indicate respectively to indicate mono-rhamnolipids (having a single rhamnose sugar ring) and di-rhamnolipids (having two rhamnose sugar rings) respectively. If abbreviations are10 used Rha is mono-rhamnolipid and Rha2 is di-rhamnolipid. The mono-rhamnolipid may be L-rhamnosyl-β-hydroxydecanoyl-β-hydroxydecanoate (Rha-C10- C10 with a formula of C26H48O9) produced by P. aeruginosa. 15 A typical di-rhamnolipid is L-rhamnosyl-L-rhamnosyl- β -hydroxydecanoyl- β -hydroxydecanoate (Rha2C10C10 with a formula of C32H58O13). In practice a variety of other minor components with different alkyl chain length combinations, depending upon carbon source and bacterial strain, exist in combination with the above more 20 common rhamnolipids. The ratio of mono-rhamnolipid and di-rhamnolipid may be controlled by the production method. The following rhamnolipids are sources of mono- and di- rhamnolipids encompassed within the invention (C12:1, C14:1 indicates fatty acyl chains with double bonds): Rha-C8-C10, Rha-C10-C8,25 Rha-C10-C10, Rha-C10-C12, Rha-C10-C12:1, Rha-C12-C10, Rha-C12:1-C10, Rha-C12-C12, Rha-C12:1- C12, Rha-C14-C10, Rha-C14:1-C10, Rha2-C8-C10, Rha2-C8-C12:1, Rha2-C10-C8, Rha2-C10-C10, Rha2- C10-C12:1,Rha2-C10-C12,Rha2-C12-C10, Rha2-C12:1-C12, Rha2-C10-C14:1,Rha2-C14-C14and mixtures thereof. 30 Preferably, the rhamnolipid comprises at least 50 wt.% di-rhamnolipid, more preferably at least 60 wt.% di-rhamnolipid, even more preferably 70 wt.% di-rhamnolipid, most preferably at least 80 wt.% di-rhamnolipid. Preferably the rhamnolipid is a di-rhamnolipid of formula: Rha2-C8-12-C8-12. The preferred alkyl chain length is from C8to C12, the alkyl chain may be saturated or unsaturated. Preferably the solid laundry composition includes from 1 wt.% to 20 wt.% alkyl aryl35 sulphonate surfactant. P0000295EP CPL 7 Carboxylate surfactant: Other suitable anionic detersive surfactants other than the sulphonate anionic surfactant include alkyl ether carboxylate surfactant. Preferably the alkyl ether carboxylate surfactant has a structure: R-(OCH2CH2)n-OCH2-COOH, where R is selected from 5 saturated C8to C18linear alkyl chains, preferably C12, to C18linear alkyl chains, more preferably a C12or C18linear alkyl chain, most preferably a C12linear alkyl chain; n is the average ethoxylation and n is selected from 1 to 20, 5 to 20, preferably 7 to 14, more preferably 8 to 12, most preferably 9 to 11, also preferred are C10 to C18 alkyl alkoxy carboxylates comprising 1-5 ethoxy units. Weights of alkyl ether carboxylic acid are calculated as the protonated form, R- 10 (OCH2CH2)n-OCH2COOH. They may be used as salt version for example sodium salt, or amine salt. The alkyl chain is aliphatic and linear and may be selected from: CH3(CH2)7-; CH3(CH2)8-; CH3(CH2)9-; CH3(CH2)10-; CH3(CH2)11-; CH3(CH2)12-; CH3(CH2)13-; CH3(CH2)14-; CH3(CH2)15-; CH3(CH2)16-; and, CH3(CH2)17-.The alkyl chain is preferably selected from CH3(CH2)15- and CH3(CH2)17-. Alkyl ether carboxylic acid are available from Kao (Akypo®), Huntsman (Empicol®)15 and Clariant (Emulsogen®). Preferably the anionic surfactant may additionally include a sulphated ethoxylated C10 Guerbet alcohol, preferably a sulphated ethoxylated C10 Guerbet alcohol. Preferably the Guerbet alcohol has from 2 to 10 ethoxylate units, more preferably 2 to 6. Preferably the C10 Guerbet alcohol 20 surfactant has a number average degree of ethoxylation in the range from 2.5 to 6. Preferably the solid laundry composition includes an anionic surfactant comprising sulphonate surfactant and sulphate surfactant. Still preferably where the sulphate surfactant is an alkoxylated sulphate surfactant, non-alkoxylated sulphate surfactant or mixtures thereof. 25 Preferably the solid laundry composition according to the present invention comprises an anionic surfactant other than the sulphonate surfactant, preferably wherein the anionic surfactant other than the sulphonate surfactant is selected from the group consisting of sulphate surfactant, rhamnolipid biosurfactant, carboxylate surfactant, sulphated ethoxylated Guerbet30 alcohol. Preferably the amount of anionic surfactant in the solid laundry composition ranges from 1 wt.% to 50 wt.%, still preferably from 5 wt.% to 50 wt.%, more preferably 8 wt.% to 50 wt.%, still more preferably from 10 wt.% to 50 wt.%. Still preferably the amount of anionic surfactant is 35 preferably in an amount ranging from 1 wt.% to 40 wt.%, still preferably from 5 wt.% to 40 wt.%, P0000295EP CPL 8 more preferably 8 wt.% to 40 wt.%, still more preferably from 10 wt.% to 40 wt.%. Preferably the amount of anionic surfactant in the solid laundry composition is not less than 1 wt.%, still preferably not less than 5 wt.%, more preferably not less than 8 wt.%, still more preferably not less than 10 wt.%, but typically not more than 45 wt.%, preferably not more than 40 wt.% or still 5 preferably not more than 30 wt.%. Nonionic surfactant According to the first aspect of the present invention the solid laundry composition includes a nonionic surfactant which is an alkoxylated secondary nonionic surfactant. The nonionic 10 surfactant is secondary alcohol-based surfactant. The nonionic surfactant is a branched secondary alcohol-based surfactant. The nonionic surfactant is an alkoxylated alcohol surfactant derived from the reaction of a monohydroxy alcohol selected from secondary alcohol, or secondary alkylphenol with from 6 to 15 35 moles of alkylene oxide per mole of alcohol or alkyl phenol on an average basis. Preferably the alkyl group or the alkyl phenol group containing from about 8 to about 20 carbon atoms. More preferably the nonionic surfactant is an alkyl alkoxylated secondary nonionic surfactant. The alkoxylated nonionic surfactant preferably has an average of from 8 to 18, more preferably 20 from 9 to 15, still more preferably from 12 to 15 carbon atoms. Preferably the alkyl alkoxylated nonionic surfactant has an average of from 1 to 35 units of alkylene oxide per mole of alcohol, still more preferably from 1 to 31. 25 Alkyl ethoxylated secondary nonionic surfactant are preferred. Preferably the alkyl ethoxylated secondary nonionic surfactant has an average of from 1 to 20, preferably from 1 to 18, more preferably from 1 to 15, units of ethylene oxide per mole of alcohol. Alkyl propylated secondary nonionic surfactant are preferred. Preferably the alkyl propylated 30 secondary nonionic surfactant has an average of from 1 to 11, preferably from 1 to 10, more preferably from 1 to 8, units of propylene oxide per mole of alcohol. Preferably the alkyl alkoxylated secondary nonionic surfactant has a mixture of ethylene oxide and propylene oxide. 35 P0000295EP CPL 9 According to the first aspect of the present invention the alkyl alkoxylated secondary nonionic surfactant has the general formula (I). (I) wherein n is at least 1 5 where n1is at least 1 where n + n1ranges from 8 to 15 x is a real number from 0 to 15 y is a real number from 1 to 20. 10 The alkyl alkoxylated secondary nonionic surfactant is preferably a condensation product of secondary alcohol and alkylene oxide having from 1 to 35 moles of alkylene oxide per mole of alcohol. More preferably the alkylene oxide is an ethylene oxide, propylene oxide and mixtures thereof. 15 Preferably the nonionic surfactant has a HLB value ranging from 8 to 18, more preferably from 12 to 15, still more preferably the HLB value is from 13 to 14. Preferably the nonionic surfactant is Tergitol 15-S-9 (which is a condensation product of C11to C15secondary alcohol having 9 moles of ethylene oxide. 20 Preferably the laundry detergent composition includes from 0.2 wt.% to 10 wt.% alkyl alkoxylated secondary nonionic surfactant, more 1 wt.% to 10 wt.% alkyl alkoxylated secondary nonionic surfactant, still more preferably 0.2 wt.% to 5 wt.% alkyl alkoxylated secondary nonionic surfactant where the nonionic surfactant has a structure in accordance with formula (I). 25 Preferably the amount of alkyl alkoxylated secondary nonionic surfactant ranges from 1 wt.% to 5 wt.%, still preferably from 1 wt.% to 4 wt.%, more preferably 1 wt.% to 3 wt.%, still more preferably from 1 wt.% to 2.5 wt.%. Preferably the amount of alkyl alkoxylated secondary nonionic surfactant in the solid laundry detergent composition is not less than 1 wt.%, still preferably not less than 1.5 wt.%, more preferably not less than 2 wt.%, still more preferably not 30 less than 2.5 wt.%, but typically not more than 8 wt.%, preferably not more than 6 wt.% or still preferably not more than 5 wt.%. The solid laundry detergent composition may include other nonionic surfactant such as P0000295EP CPL 10 C8to C18alkyl ethoxylates, such as, NEODOL® non-ionic surfactants from Shell; C6to C12alkyl phenol alkoxylates wherein preferably the alkoxylate units are ethyleneoxy units, propyleneoxy units or a mixture thereof; C12to C18alcohol and C6to C12alkyl phenol condensates with ethylene oxide / propylene oxide block polymers such as Pluronic® from BASF; alkyl 5 polysaccharides, preferably alkyl polyglycosides; methyl ester ethoxylates; polyhydroxy fatty acid amides; ether capped poly(oxyalkylated) alcohol surfactants; and mixtures thereof. Other suitable nonionic surfactant include alkyl alkoxylated alcohols, preferably C8 to C18 alkyl alkoxylated alcohol, preferably a C8 to C18 alkyl ethoxylated alcohol, preferably the alkyl 10 alkoxylated alcohol has an average degree of alkoxylation of from 1 to 50, preferably from 1 to 30, or from 1 to 20, or from 1 to 10, preferably the alkyl alkoxylated alcohol is a C8 to C18 alkyl ethoxylated alcohol having an average degree of ethoxylation of from 1 to 10, preferably from 1 to 7, more preferably from 1 to 5 and most preferably from 3 to 7. The alkyl alkoxylated alcohol can be linear or branched and substituted or un-substituted. 15 Preferably the composition according to the present invention comprises a further nonionic surfactant selected from C8 to C18 alkyl ethoxylates, C6 to C12 alkyl phenol alkoxylates, alkyl polysaccharides, preferably alkyl polyglycosides; methyl ester ethoxylates; polyhydroxy fatty acid amides; ether capped poly(oxyalkylated) alcohol surfactants; and mixtures thereof. 20 Amphoteric surfactant According to a first aspect of the present invention, the solid detergent composition preferably includes an amphoteric surfactant. 25 As used herein, the term “amphoteric” includes (a) surfactant molecules that contain both an acidic and basic site such as, for example, an amino acid containing both amino (basic) and acid (e.g., carboxylic acid, acidic) functional groups; or (b) zwitterionic surfactant molecules which possess both positive and negative charges within the same molecule. The charges of the zwitterionic molecule may be either dependent or independent of the pH of the composition. 30 The term “amphoteric surfactant,” as used herein, is also intended to encompass zwitterionic surfactants, which are well known to formulators skilled in the art as a subset of amphoteric surfactants. Non-limiting examples of amphoteric surfactants useful in the compositions of the present 35 invention are disclosed in McCutcheon's, Detergents and Emulsifiers, North American edition P0000295EP CPL 11 (1986), published by allured Publishing Corporation; and McCutcheons, Functional Materials, North American Edition (1992); both of which are incorporated by reference herein in their entirety. 5 Examples of amphoteric surfactants suitable for use in the present invention include, but are not limited to, amphocarboxylates such as alkylamphoacetates (mono or di); alkyl betaines; alkylamidoalkyl betaines; alkylamidoalkyl sultaines; alkylamphophosphates; phosphorylated imidazolines such as phosphobetaines and pyrophosphobetaines; carboxyalkyl alkyl polyamines; alkylimino-dipropionates; alkylamphoglycinates (mono or di); 10 alkylamphoproprionates (mono or di), ); N-alkyl [3-aminoproprionic acids; alkylpolyamino carboxylates; and mixtures thereof. The amphoteric surfactant is preferably selected from the group consisting of betaines, sultaines, amine oxide or mixtures thereof. A preferred amphoteric surfactant is the betaine type 15 surfactant. Preferably the betaine type amphoteric surfactant has a permanent negative charge and positive charge on the same molecule which does not alter with change in the pH and not having an isoelectric point. They are quaternized derivatives. Alkyl betaines 20 where R=C8-C34 alkyl (saturated or unsaturated) or mixtures thereof. Examples include Coco- Betaine (R=coco alkyl), Lauryl Betaine (R=lauryl, C12H25), and Oleyl Betaine (R=oleyl, C18H35). 25 Alkylamidoalkyl betaines where RCO= C6to C24acyl (saturated or unsaturated) or mixtures thereof and x= 1 to 4. Examples include Cocamidoethyl Betaine (RCO=coco acyl, x=2), Cocamidopropyl Betaine (RCO=coco acyl, x=3), Lauramidopropyl Betaine (RCO=lauroyl, and x=3), Myristamidopropyl30 Betaine (RCO=myristoyl, and x=3), Soyamidopropyl Betaine P0000295EP CPL 12 (R=soy acyl, x=3), and Oleamidopropyl Betaine (RCO=oleoyl, and x=3). Preferably the amphoteric surfactant is Cocamidopropyl Betaine (CAPB). The cocamidopropyl Betaine is commercially available from Rhone-Poulenc as Mirataine BDJ, Galaxy, Huntsman. 5 Alkyl phosphobetaines where R=C6 to C24 alkyl (saturated or unsaturated) or mixtures thereof and M=monovalent cation, such as Sodium Coco PG-Dimonium Chloride Phosphate, where R=coco alkyl and M+=Na+. 10 Alkyl sulphobetaines where R1=C6 to C24 alkyl (saturated or unsaturated) or mixtures thereof and R2and R3, which may be the same or different, are C1 to C3 alkyl or hydroxyalkyl groups, for example, methyl15 groups. Alkyl Hydroxysultaines where R=C8-C34 alkyl (saturated or unsaturated) or mixtures thereof. Examples include Coco-20 hydroxysultaine (R=coco alkyl) and Lauryl hydroxysultaine (R=lauryl, C12H25). Alkyl sultaines P0000295EP CPL 13 where R=C8-C34alkyl (saturated or unsaturated) or mixtures thereof. Examples include Coco- sultaine (R=coco alkyl) and Lauryl sultaine (R=lauryl, C12H25). Alkylamidoalkyl sultaines 5 where RCO= C6to C24acyl (saturated or unsaturated) or mixtures thereof. Examples include Cocamidopropyl sultaine (RCO=coco acyl, x=3), Lauramidopropyl sultaine (RCO=lauroyl, and x=3), Myristamidopropyl sultaine (RCO=myristoyl, and x=3), soyamidopropyl sultaine (R=soy10 acyl, x=3), and Oleamidopropyl sultaine (RCO=oleoyl, and x=3). Alkylamidoalkyl Hydroxysultaines where RCO= C6 to C24 acyl (saturated or unsaturated) or mixtures thereof. Examples include 15 Cocoamidopropyl hydroxysultaine (RCO=coco acyl, x=3), Lauramidopropyl hydroxysultaine (RCO=lauroyl, and x=3), Myristamidopropyl hydroxysultaine (RCO=myristoyl, and x=3), Oleamidopropyl hydroxysultaine (RCO=oleoyl, and x=3). Further useful amphoteric surfactant are those which are broadly described as derivatives of 20 aliphatic secondary and tertiary amines, preferably wherein the nitrogen is in a cationic state, in which the aliphatic radicals can be straight or branched chain and wherein one of the radicals contains an ionizable water solubilizing group, e.g., carboxy, sulfonate, sulfate, phosphate, or phosphonate. These amphoteric surfactant includes derivatives of aliphatic amines which contain a long chain of carbon atoms with 8 to 18 carbon atoms and an anionic water- 25 solubilizing group selected from the group consisting of but not limited to carboxylate, sulfonate or sulphate. Examples of the compounds falling within this definition are sodium-3- dodecylamino propane sulfonate and dodecyl dimethyl ammonium hexanoate. Alkyl amine oxide P0000295EP CPL 14 wherein R1 is typically C6 to C24 alkyl (saturated or unsaturated) or mixtures thereof. Preferably C8 to C18 alkyl group, for example, C12 to C14 alkyl. R2 and R3, which may be the same or different, are C1 to C3 alkyl or hydroxyalkyl groups, for example, methyl groups. Examples 5 include cocamine oxide (R=coco alkyl) and lauramine oxide (RCO = lauryl). The most preferred amine oxide is coco dimethylamine oxide. Alkylamidoalkyl amine oxide 10 Where RCO =C6 to C24 acyl (saturated or unsaturated) or mixtures thereof and x = 1 to 4. Examples include cocamidopropylamine oxide (RCO =coco acyl x =3) and lauramidopropylamine oxide (RCO= lauroyl, x =3), and combinations of two or more thereof. Preferably the amphoteric surfactant according to the present invention includes those wherein 15 the degree of ionisation varies as a function of pH of the medium it is in. These have an isoelectric point (IEP) in the range from 3.5 to 6.5. Preferably the amphoteric surfactant is selected from the group consisting of betaines, sultaines, amine oxide, alkyl iminoacetates, imino dialkanoates, amino alkanoates alkyl 20 ammonium propionates, or mixtures thereof. Preferably the amphoteric surfactant is selected from amine oxide amphoteric surfactant, betaine amphoteric surfactant, sultaine amphoteric surfactant and mixtures thereof. More preferably the amphoteric surfactant are betaines or amine oxide. Preferably the betaine type amphoteric surfactant is selected from alkyl betaines, alkylamidoalkyl betaines, alkyl phosphobetaine and alkyl sulphobetaines. Preferably the amine 25 oxide type amphoteric surfactant is selected from alkyl amine oxide, alkylamidoalkyl amine oxide or mixtures thereof. Most preferably the amphoteric surfactant is a cocamidopropyl betaine (CAPB). The solid laundry composition of the present invention includes from 0.2 wt.% to 5 wt.% of an 30 amphoteric surfactant. Preferably the detergent composition comprises at least 0.2 wt.%, still preferably at least 0.3 wt.%, still preferably at least 0.4 wt.%, most preferably at least 0.5 wt.% P0000295EP CPL 15 of the amphoteric surfactant, but typically not more than 4 wt.%, still preferably not more than 3.5 wt.%, still further preferably not more than 3 wt.%, still more preferably not more than 2.5 wt.% and most preferably not more than 1 wt.% of an amphoteric surfactant based on the weight of the detergent composition. 5 In the solid detergent composition according to the present invention the ratio of the anionic surfactant to the amphoteric surfactant is preferably in a ratio from 0.4:1 to 200:1, still preferably the ratio is from 5:1 to 100:1, In the detergent composition of the present invention the total amount of anionic surfactant is greater than the amphoteric surfactant present in the 10 composition. Laundry detergent composition The laundry detergent composition according to the first aspect of the present invention includes an anionic surfactant and a nonionic surfactant as described hereinabove. The laundry15 detergent composition is a solid composition. Form of the composition: The composition of the present invention is in the solid form. The composition according to the present invention may be made via a variety of conventional methods known in the art and 20 those which includes but is not limited to the mixing of ingredients, including dry-mixing, compaction such as agglomerating, extrusion, tabletting, or spray-drying of the various compounds comprised in the detergent composition, or mixtures of these techniques, whereby the components herein also can be made by for example compaction, including extrusion and agglomerating, or spray-drying. The detergent composition may be made by any of the 25 conventional processes, especially preferred is the technique of slurry making and spray drying. Another preferred method of preparing the solid laundry composition is by agglomerate process. Typically, a suitable spray-drying process involves the step of preparing an aqueous slurry 30 mixture, transferring it through at least one pump, preferably two pumps, to a pressure nozzle. Atomizing the aqueous slurry mixture into a spray-drying tower and drying the aqueous slurry mixture to form spray-dried detergent particles. It may be preferred for a gas, such as air, to be introduced into the spray-drying process after the step of forming the aqueous slurry. Preferably, the spray-drying tower is a counter-current spray-drying tower, although a co-current 35 spray-drying tower may also be suitable. Typically, the spray-dried detergent particle is P0000295EP CPL 16 subjected to cooling, for example an air lift. Typically, the spray-drying powder is subjected to particle size classification, for example a sieve, to obtain the desired particle size distribution. Preferably, the spray-dried detergent particle has a particle size distribution such that weight average particle size is in the range of from 300 micrometers to 500 micrometers, and less than 5 10 wt.% of the spray-dried detergent particles have a particle size greater than 2360 micrometers. Typically, the solid detergent composition may be in the form of an agglomerate detergent particle. A suitable agglomeration involves the step of contacting a detersive ingredient, such as 10 a detersive surfactant, e.g., linear alkyl benzene sulphonate (LAS) and / or alkyl alkoxylated sulphate, with an inorganic material, such as sodium carbonate and / or silica, in a mixer. The agglomeration process may also be an in-situ neutralization agglomeration process wherein an acid precursor of an anionic surfactant, such as LAS, is contacted with an alkaline material, such as alkali metal carbonate and / or alkali metal hydroxide, in a mixer, and wherein the acid 15 precursor of an anionic surfactant is neutralized by the alkaline material to form salt of anionic surfactant during the agglomeration process. The agglomeration process may be a high, medium, or low shear agglomeration process, wherein a high shear, medium shear or low shear mixer is used accordingly. The agglomeration process may be a multi-step agglomeration process wherein two or more mixers are used, such as a high shear mixer in combination with a 20 medium or low shear mixer. The agglomeration process can be a continuous process or a batch process. It may be preferred for the agglomerates to be subjected to a drying step, for example to a fluid bed drying step. It may also be preferred for the agglomerates to be subjected to a cooling step, for example a fluid bed cooling step. Typically, the agglomerates are subjected to particle size classification, for example a fluid bed elutriation and / or a sieve, to obtain the 25 desired particle size distribution. Preferably, the agglomerates have a particle size distribution such that weight average particle size is in the range of from 300 micrometers to 800 micrometers, and less than 10 wt.% of the agglomerates have a particle size less than 150 micrometers and less than 10 wt.% of the agglomerates have a particle size greater than 1200 micrometers. 30 It may be preferred for fines and over-sized agglomerates to be recycled back into the agglomeration process. Typically, over-sized particles are subjected to a size reduction step, such as grinding, and recycled back into the agglomeration process. P0000295EP CPL 17 The compositions herein can take a variety of physical solid forms including forms such as powder, particulate, granule, ribbon, noodle, paste, tablet, flake, pastille, and bar, and preferably the composition is in the form of powder, granules, or a tablet, still preferably the composition is in the form of a powder. The composition may be in the form of a unit dose 5 formulation, delayed delivery formulation, detergent contained on or in a porous substrate or nonwoven sheet, and other suitable forms that may be apparent to one skilled in the art in view of the teachings herein. The composition according to the present invention may preferably be in a form selected from powder, unit dose or pouch form, tablet, gel, paste, bar, or flake. Preferably the composition is for manual-washing. Preferably, the composition of the present 10 invention is a solid laundry detergent composition. Preferably the composition is in the form of a spray -dried powder. The compositions preferably have a density of more than 350 grams / litre, more preferably more than 450 grams / litre or even more than 570 grams / litre. Preferably the composition is in the form of an agglomerate particle having a density of 300 to 1000 g / L, more preferably from 400 to 850 g / L. 15 The composition according to the present invention has a pH ranging from 6.5 to 13, preferably from 8.5 to 11.5, more preferably 8.5 to 11 when measured at 1 wt.% dilution in de-ionised water at 25°C. Preferably the sodium carbonate builder provides the desired pH to the composition. In addition to the sodium carbonate builder, the composition of the present 20 invention preferably also includes further alkaline source which is selected from bicarbonates and semi-bicarbonates and alkali metal silicates. The composition may preferably include a buffer. The solid laundry detergent composition according to the present invention preferably has from 25 0 wt.% to 8 wt.% zeolite builder. Preferably the amount of zeolite builder is less than 5 wt.%, still preferably less than 3 wt.%, more preferably less than 2 wt.% by weight in the detergent composition and most preferably the detergent composition is substantially free of zeolite builder. 30 The solid laundry detergent composition according to the present invention preferably has from 0 wt.% to 4 wt.% phosphate builder. Preferably the amount of phosphate builder is less than 3 wt.%, still preferably less than 2 wt.%, more preferably less than 1 wt.% by weight in the detergent composition and most preferably the detergent composition is substantially free of phosphate builder. 35 P0000295EP CPL 18 The solid laundry detergent composition according to the present invention preferably includes from 0 wt.% to 6 wt.% bicarbonate salt, preferably sodium bicarbonate. Preferably the amount of bicarbonate salt is less than 5 wt.%, still preferably less than 2 wt.%, more preferably less than 1 wt.% by weight in the detergent composition and most preferably the detergent 5 composition is substantially free of bicarbonate salt. Preferably the bicarbonate salt is sodium bicarbonate. The solid laundry composition preferably comprises from 0 wt.% 20 wt.% sodium carbonate. The solid laundry composition preferably comprises from 0 wt.% 30 wt.% sulphate filler. The 10 solid laundry composition preferably comprises 0 wt.% sulphate filler and from 0 wt.% to 45 wt.% alkali metal chloride filler. The solid laundry composition preferably comprises from 0 wt.% to 8 wt.% zeolite builder. The solid laundry composition preferably comprises additional anionic surfactant which is selected from the group consisting of alkyl sulphate, alkyl alkoxylated sulphate surfactant, rhamnolipids, alkyl ether carboxylate alkyl ether sulphonate alkyl olefin15 sulphonate and combinations thereof. The term “substantially free” means that the indicated component is at the very minimum, not deliberately added to the composition to form part of it, or, more typically, is not present at analytically detectable levels. It is meant to include compositions whereby the indicated material20 is present only as an impurity in one of the other materials deliberately included. Low pH solid detergent composition: Preferably the solid laundry composition according to the present invention preferably has a spray-dried detergent particle having a pH of 4 or more when measured at 1 wt.% dilution in25 deionized water at 25°C. Preferably the low pH solid laundry composition has a pH ranging from 6 to 9, more preferably from 6 to 8.5 when measured at 1 wt.% dilution in deionized water at 25 °C. 30 The solid laundry composition with a pH in the range from 6.5 to 9 preferably includes a spray- dried detergent particle, wherein the spray-dried detergent particle comprises: (i) 3 wt.% to 50 wt.% anionic surfactant; and, (ii) an ingredient selected from the group consisting of (a) organic acid, preferably an organic carboxylic acid (b) a salt of organic carboxylic acid selected from the group 35 consisting of organic carboxylic acid salt of alkaline earth metal; organic carboxylic acid P0000295EP CPL 19 salt of aluminium, an aluminium complex of organic carboxylic acid, organic carboxylic acid salt of alkali metal and mixtures thereof. Preferably the low pH solid detergent composition includes anionic detersive surfactant, 0 to 8 5 wt.% zeolite builder, 0 to 4 wt.% phosphate builder, 0 to 8 wt.% sodium carbonate, 0 to 8 wt.% sodium silicate. The composition is preferably substantially free of phosphate builder. The composition may be substantially free of sodium carbonate. The composition may be substantially free of sodium bicarbonate. The composition may be substantially free of sodium silicate. 10 More preferably the solid laundry detergent composition includes a spray dried detergent particle comprising: (i) 4 to 35 wt.% anionic surfactant; (ii) 0 to 8 wt.% zeolite builder; (iii) 0 to 4 wt.% sodium carbonate (iv) 0 to 8 wt.% sodium silicate (v) 1 to 10 wt.% organic acid; (vi) optionally, 1 to 10 wt.% magnesium sulphate. 15 Preferably the solid detergent composition includes anionic detersive surfactant, 0 to 8 wt.% zeolite builder, 0 to 4 wt.% phosphate builder, 0 to 8 wt.% sodium carbonate, 0 to 8 wt.% sodium silicate and from 4 to 20 wt.% organic acid. Preferably the solid laundry detergent composition includes silica. Preferably the silica is in-situ formed. The composition is preferably 20 substantially free of phosphate builder. The composition may be substantially free of sodium carbonate. The composition may be substantially free of sodium bicarbonate. The composition may be substantially free of sodium silicate. Preferably the organic acid comprises citric acid The organic acid may be at least partially coated, or even completely coated, by a water- dispersible material. Water-dispersible material also typically includes water-soluble material. A25 suitable water-dispersible material is wax. A suitable water-soluble material is citrate. The solid laundry detergent composition with pH in the range from 6 to 9 preferably comprises a spray dried detergent base particle, where the particle comprising: (i) from 3 wt.% to 50 wt.% detersive surfactant; preferably anionic detersive surfactant; (ii) from 0.2 wt.% to 6 wt.% organic 30 carboxylic acid salt of alkaline earth metal; (iii) preferably from 2 wt.% to 20 wt.% organic carboxylic acid salt of alkali metal; (iv) preferably from 0 wt.% to 4 wt.% silicate and / or disilicate salt of alkaline earth metal; (v) preferably from 0 wt.% to 2 wt.% alkaline earth metal salt, preferably hydroxide of alkaline earth metal; (vi) preferably 25 wt.% to 88 wt.% filler; and, (vii) preferably from 1 wt.% to 3.5 wt.% moisture content. 35 P0000295EP CPL 20 Preferably the solid laundry detergent composition comprises a low pH spray-dried detergent particle, where the particle includes: (i) from 3 wt.% to 50 wt.% detersive surfactant; preferably anionic detersive surfactant; (ii) from 0.5 wt.% to 10 wt.% of one or more of organic carboxylic acid salt of aluminium, an aluminium complex of organic carboxylic acid or mixtures thereof; (iii) 5 preferably from 2 wt.% to 12 wt.% organic carboxylic acid salt of alkali metal; (iv) preferably from 0.75 wt.% to 3.5 wt.% silica; (v) preferably from 0 wt.% to 2 wt.% silicate salt of alkali metal; (vi) preferably from 0 wt.% to 1 wt.% aluminium hydroxide; (vii) preferably 25 wt.% to 88 wt.% filler; and, (viii) preferably from 1 wt.% to 3.5 wt.% moisture content. 10 Preferably the solid laundry detergent composition comprises a low pH spray-dried detergent particle, where the particle includes: (i) from 3 wt.% to 50 wt.% detersive surfactant; preferably anionic detersive surfactant; (ii) from 0.4 wt.% to 10 wt.% of one or more of organic carboxylic acid salt of aluminium, an aluminium complex of organic carboxylic acid or mixtures thereof; (iii) preferably from 0 wt.% to 12 wt.% organic carboxylic acid salt of alkali metal; (iv) preferably 15 from 0 wt.% to 2 wt.% silicate salt of alkali metal; (v) preferably from 0 wt.% to 2 wt.% aluminium hydroxide; (vii) preferably 25 wt.% to 88 wt.% filler; and, (viii) preferably from 1 wt.% to 3.5 wt.% moisture content. Preferably the spray-dried detergent particle includes a mixture of aluminium complex of 20 organic carboxylic acid and organic carboxylic acid salt of alkali metal. The amount of organic carboxylic acid of alkali metal in the spray dried detergent particle is not less than 2.5 wt.%, still preferably not less than 3 wt.%, more preferably not less than 3.2, still more preferably not less than 3.5 wt.%, but typically not more than 11.5 wt.%, preferably not more than 11 wt.% or still preferably not more than 10.5 wt.%, more preferably not more than 10.3 wt.%, still more25 preferably not more than 10 wt.%. Preferably the amount of organic carboxylic acid salt of alkali metal in the spray dried detergent particle ranges from 0.1 wt.% to 12 wt.% organic carboxylic acid salt of alkali metal. Preferably the amount of organic carboxylic acid salt of alkali metal in the spray dried detergent particle is 30 not less than 2.5 wt.%, still preferably not less than 3.5 wt.%, more preferably not less than 5, still more preferably not less than 5.5 wt.%, furthermore preferably not less than 6 wt.%, but typically not more than 11.5 wt.%, preferably not more than 11 wt.% or still preferably not 5 more than 10 wt.%, more preferably not more than 8 wt.%. P0000295EP CPL 21 Additionally, one or more of optional ingredients may be present in the spray-dried detergent particle. The optional ingredients may include but it not limited to polymer, hydrotropes, optical brighteners which is preferably selected from fluorescers, colorants, shading dye, pigments, or mixtures thereof and antifoam. 5 Preferably the spray-dried detergent particle includes silica. Preferably the silica is present in an amount ranging from 0.2 wt.% to 5 wt.%, still preferably from 0.2 wt.% to 3.5 wt.%, further preferably from 0.2 wt.% to 3 wt.%, still more preferably 0.5 wt.% to 2.5 wt.% in the spray-dried detergent particle. The silica may be either performed or generated in-situ. Preferably the spray- 10 dried detergent particle has a mixture of organic carboxylic acid and silica, preferably in-situ formed silica. Preferably the spray-dried detergent particle has a mixture of a salt of organic carboxylic acid and silica, preferably in-situ formed silica. More preferably the spray-dried detergent particle has a salt of organic carboxylic acid which is a combination of organic carboxylic acid salt of alkali metal and any one or more of the (a) organic carboxylic acid salt of 15 alkaline earth metal, (b) organic carboxylic acid salt of aluminium and (c) an aluminium complex of organic carboxylic acid. Preferably the spray-dried detergent particle has less than 2 wt.% alkali metal silicate, still preferably less than 1 wt.%, further preferably 0 wt.% alkali metal silicate. 20 Preferably the spray-dried detergent particle has less than 2 wt.% carbonate builder, still preferably less than 1 wt.%, further preferably 0 wt.% carbonate builder. Examples of the carbonate builder salt includes alkaline earth metal and alkali metal carbonates or mixtures thereof. Typically, the alkali metal carbonates are sodium and / or potassium carbonate of which 25 sodium carbonate is mostly preferred. Alkali metal carbonate according to the invention refers to carbonates, bicarbonates, sesquicarbonates or mixtures thereof. Preferably the spray-dried detergent particle has less than 2 wt.% inorganic phosphate builder, still preferably less than 1 wt.%, further preferably 0 wt.% inorganic phosphate builder. 30 Examples of inorganic phosphate builder includes sodium orthophosphate, pyrophosphate and tripolyphosphate. Optionally, the spray-dried detergent particle includes from 0 wt.% to 5 wt.% polymer, still more preferably from 0.5 to 5 wt.%, still more preferably 0.5 wt.% to 4 wt.% polymer by weight of the 35 spray-dried detergent particle. Preferably the polymer is a carboxylate polymer. Still preferably a P0000295EP CPL 22 polyacrylate polymer, still preferably a copolymer of acrylic acid or methacrylic acid with maleic acid. The spray dried detergent particle may include further polymer selected from antiredeposition polymer, soil release polymer, structuring polymer, or mixtures thereof. Preferably the polymer is a polymeric carboxylate, preferably polyacrylate or a copolymer of 5 acrylic acid and maleic acid. However other polymers may also be suitable such as polyamines (including the ethoxylated variants thereof), polyethylene glycol and polyesters. Polymeric soil suspending aids and polymeric soil release agents are particularly suitable. Preferably the anti- redeposition agents are sodium carboxyl methyl cellulose. 10 Preferably the spray-dried detergent particle has less than 2 wt.% zeolite builder, still preferably less than 1 wt.%, further preferably 0 wt.% zeolite builder. Examples of the zeolite builder includes zeolite A, zeolite 4A, aluminium zeolite P (zeolite MAP) described and claimed in EP 384070A (Unilever). Zeolite MAP is an alkali metal aluminosilicate of the P type having a silicon 10 to aluminium ratio not exceeding 1.33, preferably not exceeding 1.15, and more preferably15 not exceeding 1.07. The spray dried detergent particle may be optionally contacted with a non-ionic surfactant, a fatty acid or combinations thereof. The non-ionic surfactant and the fatty acid are in liquid form. In addition to the non-ionic surfactant and the fatty acid in liquid form any other liquid laundry 20 ingredient which is not suitable to be added via slurry or tower, may be added by spraying the liquid onto the spray-dried detergent particle. It is also preferred that the spray-dried detergent particle includes (i) 4 wt.% to 35 wt.% anionic surfactant, preferably alkyl benzene sulphonate (ii) 0 wt.% to 8 wt.% zeolite (iii) 0 wt.% to 4 25 wt.% phosphate builder (iv) 0 wt.% to 8 wt.% alkali metal carbonate, preferably sodium carbonate, (v) from 0 wt.% to 8 wt.% sodium silicate (vi) 1 wt.% to 10 wt.% organic acid, preferably citric acid, (vii) from 0 wt.% to 10 wt.% magnesium sulphate. It is preferably found that when the spray dried detergent particle includes from 0.1 wt.% to 5 wt.% silica it provides good powder properties. 30 Preferred ingredients in the solid detergent composition The detergent composition of the present invention may preferably include one or more of the preferred ingredients selected from the group consisting of cleaning and care ingredients. Non- limiting examples includes one or more adjunct cleaning additives selected from polymers, P0000295EP CPL 23 enzymes, enzyme stabilizer, brightening agents, hueing agent, bleach, chelating agent, humectant, perfume, filler or carrier, an alkalinity system, a buffer, or combinations thereof. Carbonate builder 5 The detergent composition of the present invention preferably includes a sodium carbonate builder. Examples of the carbonate builder includes alkaline earth metal and alkali metal carbonates as disclosed in the German patent application No.2,321,001. The carbonate builder preferably further includes other alkali metal carbonate, alkaline earth 10 metal carbonate or mixtures thereof. Preferred alkali carbonates are sodium and / or potassium carbonate of which sodium carbonate is particularly preferred. It is further preferred that sodium carbonate makes up at least 75 wt.%, more preferably at least 85 wt.% and even more preferably at least 90 wt.% of the total weight of the alkali carbonate builder. 15 The detergent composition of the present invention includes from 0.1 wt.% to 40 wt.% sodium carbonate builder. Preferably the detergent composition comprises at least 0.8 wt.%, still preferably at least 1 wt.%, still preferably at least 2 wt.%, most preferably at least 5 wt.% of the carbonate builder, but typically not more than 38 wt.%, still preferably not more than 35 wt.%, most preferably not more than 30 wt.% of carbonate builder based on the weight of the cleaning 20 composition. Non-carbonate builder In addition to the carbonate builder the detergent composition of the present invention may preferably include further inorganic non-carbonate builder. The other preferred builders may be 25 selected from the group consisting of silicates, silica, zeolites phosphates or mixtures thereof. Yet other non-carbonate builder may be organic builders which includes but are not limited to as succinates, carboxylates, malonates, polycarboxylates, citric acid or a salt thereof. Suitable silicates include the water-soluble sodium silicates with a SiO2: Na2O molar ratio from 30 1.0 to 2.8, more preferably with molar ratios ranging from 1.6 to 2.4, and 2.0 ratio being most preferred. The silicates may be in the form of either the anhydrous salt or a hydrated salt. Sodium silicate with an SiO2: Na2O ratio of 2.0 is the most preferred silicate. P0000295EP CPL 24 Silicates are preferably present in the detergent compositions in accord with the invention at a level of from 5 wt.% to 50 wt.% by weight of the composition, more preferably from 10 wt.% to 40 wt.% by weight of the composition. 5 The composition is also phosphate free, that is the composition has no deliberately added phosphate builder such as STPP. Preferably the detergent composition includes 0 wt.% to 8 wt.% zeolite, still preferably the composition has no deliberately added zeolite. Polymers: 10 The composition of the present invention may preferably include polymers which provide cleaning or care benefits. The cleaning polymer includes but is not limited to soil release polymer, carboxylate polymers, antiredeposition polymers, cellulosic polymers, amphiphilic alkoxylated grease cleaning 15 polymers, clay soil cleaning polymers, soil suspending polymers and mixtures thereof. The polymers providing care benefits includes care polymers, dye-transfer inhibiting polymer and mixtures thereof. Suitable carboxylate polymer includes polymers such as a maleate / acrylate random copolymer 20 or polyacrylate homopolymer. Suitable carboxylate polymers includes polyacrylate homopolymers having a molecular weight of from 4,000 Da to 9,000 Da; maleate / acrylate random copolymers having a molecular weight of from 30,000 Da to 100,000 Da, or from 50,000 Da to 100,000 Da, or from 60,000 Da to 80,000 Da. 25 Also suitable are homopolymer or copolymeric carboxylic acids, such as polyacrylic acid, polymethacrylic acid, polymaleic acid, copolymers of acrylic acid or Methacrylic acid with maleic acid and maleic acid with vinyl methyl ether, these polymeric acids being present as free acids or preferably as sodium salts. Preferred representatives of this group are sodium polyacrylate and sodium salts of acrylic acid-maleic acid copolymers having a weight ratio of acrylic acid: 30 maleic acid of 10: 1 to 1:1, preferably 7: 1 to 2: 1. These compounds generally have molecular weights of 3,000 to 150,000, preferably 5,000 to 100,000. Soil release polymers are designed to modify the surface of the fabric to facilitate the ease of removal of soil. Typically soil release polymers are based on or derivatives of polyethylene 35 glycol / vinyl acetate copolymers or polyethylene glycol terephthalate polyesters and P0000295EP CPL 25 combinations thereof. Preferred soil release polymer includes polymers of aromatic dicarboxylic acids and alkylene glycols (including polymers containing polyalkylene glycols), as described in WO2009 / 153184, EP2692842 and WO2014 / 019903. Suitable soil release polymers are sold by Clariant under the TexCare® series of polymers, e.g., TexCare® SRN240, TexCare® SRN100, 5 TexCare® SRN170, TexCare® SRN300, TexCare® SRN325, TexCare® SRA100 and TexCare® SRA300. Other suitable soil release polymers are sold by Rhodia under the Repel-o- Tex® series of polymers, e.g., Repel-o-Tex® SF2, Repel-o-Tex® SRP6 and Repel-o-Tex® Crystal. A preferred polymer is selected from the group consisting of polyester soil release polymer, both end-capped and non-end-capped sulphonated PET / POET polymers, both end- 10 capped and non-end-capped unsulphonated PET / POET polymers or combinations thereof. Preferably the levels of these soil release polymer in the solid laundry detergent composition ranges from 3 wt.% to 15wt.%, preferably at least 5 wt%, still preferably at least 6wt%, still preferably at least 6.5wt%, most preferably at least 7wt%, but typically not more than 14wt%,15 still preferably not more than 13wt%, most preferably not more than 12wt%. Anti-redeposition polymers are designed to suspend or disperse soil. Typically, antiredeposition polymers are polyethylene glycol polymers, polycarboxylate polymers, polyethyleneimine polymers or mixtures thereof. Such polymers are available from BASF under the trade name 20 Sokalan®CP5 (neutralised form) and Sokalan®CP45 (acidic form). Suitable antiredeposition polymers are ethoxylated and or propoxylated polyethylene imine or polycarboxylate materials, for example, acrylic acid-based homo or copolymers available under the trademark ACUSOL from Dow Chemical, Alcosperse from Akzonobel or Sokalan from BASF. 25 Copolymer acrylic acid and maleic acid or salt thereof: According to the first aspect of the present invention the solid laundry detergent composition preferably includes a copolymer of acrylic acid and maleic acid or salt thereof wherein the copolymer comprises a weight ratio of acrylic acid segment to the maleic acid segment ranging from 1:1 to 1:9. More preferably the weight ratio of acrylic acid segment to the maleic acid 30 segment ranges from 1:1.5 to 1:9, still more preferably from 1:2 to 1:9, furthermore preferably from 1:2.5 to 1:9, still further preferably from 1:3 to 1:9, still furthermore preferably from 1:3.5 to 1:9 and also preferred are ranges from 1:4 to 1:8, more preferably from 1:5 to 1:8, also preferably from 1:6 to 1:8. P0000295EP CPL 26 The copolymer of acrylic acid and maleic acid has a weight average molecular weight ranging from 1000 to 100,000, more preferably from 1000 to 75000, more preferably 1000 to 65000, still more preferably from 1000 to 60000, still more preferably from 1500 to 60000, still more preferably from 2000 to 60000, still more preferably from 2000 to 30000, more preferably from 5 2000 to 25000. It is highly preferred that the copolymer has a weight average molecular weight in the range from 1000 to 25000 and a weight ratio of acrylic acid segment to the maleic acid segment from 1:1 to 1:9, still preferably from a weight average molecular weight in the range from 2000 to 10 25000 and a weight ratio of acrylic acid segment to the maleic acid segment from 1:1 to 1:9 and still further preferably where the weight average molecular weight in the range from 1000 to 5000 and a weight ratio of acrylic acid segment to the maleic acid segment from 1:1 to 1:9. Also preferred are the copolymer of acrylic acid and maleic acid or salt thereof wherein the 15 copolymer comprises a weight ratio of acrylic acid segment to the maleic acid segment ranging from 9:1 to 1:1. More preferably the weight ratio of acrylic acid segment to the maleic acid segment ranges from 9:1 to 8:2, still more preferably from 9:1 to 7:3, also preferably from 9:1 to 6:4. 20 Water-soluble salts of the copolymer of acrylic acid and maleic acid are also suitable for the present invention. The salts include those selected from non-limiting examples selected from alkali metal, ammonium, and substituted ammonium salts. Preferably the amount of copolymer of acrylic acid and maleic acid in the solid laundry 25 detergent composition ranges from 0.05 wt.% to 2 wt.%, more preferably from 0.05 wt.% to 0.5 wt.% still preferably from 0.05 wt.% to 0.3 wt.%, further preferably from 0.05 wt.% to 0.2 wt.%. Preferably the is amount of copolymer of acrylic acid and maleic acid in the solid laundry detergent composition is not less than 0.06 wt.%, still preferably not less than 0.07 wt.%, more preferably not less than 0.08 wt.%, still more preferably not less than 0.09 wt.%, but typically not 30 more than 0.45 wt.%, preferably not more than 0.3 wt.% or still preferably not more than 0.25 wt.%. Suitable care polymers include cellulosic polymers that are cationically modified or hydrophobically modified. Such modified cellulosic polymers can provide anti- abrasion benefits 35 and dye lock benefits to fabric during the laundering cycle. Suitable cellulosic polymers include P0000295EP CPL 27 cationically modified hydroxyethyl cellulose. Other suitable care polymers include dye lock polymers, for example the condensation oligomer produced by the condensation of imidazole and epichlorhydrin, preferably in ratio of 1:4:1. A suitable commercially available dye lock polymer is Polyquart® FDI (Cognis). Other suitable care polymers include amino silicone, which 5 can provide fabric feel benefits and fabric shape retention benefits. Preferably the solid detergent composition includes care polymer in amounts ranging from 0.01 wt.% to 10 wt.%, preferably from 0.05 wt.% to 0.5 wt.% by weight of the composition. Suitable cellulosic polymers are selected from alkyl cellulose, alkyl alkoxyalkyl cellulose, 10 carboxyalkyl cellulose, alkyl carboxyalkyl cellulose, sulphoalkyl cellulose, more preferably selected from carboxymethyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose, methyl carboxymethyl cellulose, and mixtures thereof. Suitable carboxymethyl celluloses have a degree of carboxymethyl substitution from 0.5 to 0.9 and a molecular weight from 100,000 Da to 300,000 Da. Suitable carboxymethyl celluloses have a degree of substitution greater than 0.6515 and a degree of blockiness greater than 0.45, e.g., as described in WO09 / 154933. Examples of suitable sequestering polymers are DEQUESTTM, organic phosphonate type sequestering polymers sold by Monsanto and alkanehydroxy phosphonates. The cleaning composition is preferably substantially free of phosphate based sequestering 20 polymers. By substantially free, it is meant herein that no phosphate based sequestering polymers is deliberately added. Enzymes: The composition of the present invention preferably includes one or more enzymes. Preferred 25 examples of the enzymes include those which provide cleaning performance and / or fabric care benefits. Examples of suitable enzymes include, but are not limited to, hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, xyloglucanase, phospholipases, esterases, cutinases, 30 pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, G-glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof. A typical combination is an enzyme cocktail that may comprise, for example, a protease and lipase in conjunction with one or more of amylase, mannanase and cellulase. When present in a 35 detergent composition, the aforementioned additional enzymes may be present at levels from P0000295EP CPL 28 about 0.00001% to about 2%, from about 0.0001% to about 1% or from 0.001% to about 0.5% enzyme protein by weight of the detergent composition. In one aspect preferred enzymes would include a protease. Suitable proteases include 5 metalloproteases and serine proteases, including neutral or alkaline serine proteases, such as subtilisins (EC 3.4.21.62). Suitable commercially available protease enzymes include those sold under the trade names Alcalase®, Savinase®, Primase®, Durazym®, Polarzyme®, Kannase®, Liquanase®, Liquanase Ultra®, Savinase Ultra®, Ovozyme®, Neutrase®, Everlase® and Esperase® by Novozymes A / S (Denmark), those sold under the tradename Maxatase®, 10 Maxaca®l, Maxapem®, Properase®, Purafect®, Purafect Prime®, Purafect Ox®, FN3®, FN4®, 10 Excellase® and Purafect OXP® by Genencor International, those sold under the tradename Opticlean® and Optimase by Solvay Enzymes. Suitable commercially available alpha-amylases include DURAMYL®, LIQUEZYME®, 15 TERMAMYL®, TERMAMYL ULTRA®, NATALASE®, SUPRAMYL®, STAINZYME®, STAINZYME PLUS®, FUNGAMYL® and BAN® (Novozymes A / S, Bagsvaerd, Denmark), KEMZYM® AT 9000 Biozym Biotech Trading GmbH Wehlistrasse 27b A-1200 Wien Austria, RAPIDASE®, PURASTAR®, ENZYSIZE®, OPTISIZE HT PLUS®, POWERASE® and PURASTAR OXAM® (Genencor International Inc., Palo Alto, California) and KAM® (Kao, 14-10 20 Suitable amylases include NATALASE®, STAINZYME and STAINZYME PLUS® and mixtures thereof. Preferred lipases would include those sold under the tradenames Lipex® and Lipolex®. 25 Suitable endoglucanases are sold under the tradenames Celluclean® and Whitezyme® (Novozymes A / S, Bagsvaerd, Denmark). Other preferred enzymes include pectate lyases sold under the tradenames Pectawash®, Pectaway®, Xpect® and mannanases sold under the tradenames Mannaway® (all from 30 Novozymes A / S, Bagsvaerd, Denmark), and Purabrite® (Genencor International Inc., Palo Alto, California). Preferably the enzyme may be formulated as a granule, preferably a co-granule which combines one or more additional enzymes. Methods for producing multi-enzyme co-granulate P0000295EP CPL 29 for the detergent industry are known to a person skilled in the art. Another example of cellulase enzymes in the form of co-granulates are disclosed in WO 2013 / 188331 A1. Also preferred are the enzyme in the form of a granule having a core comprising enzyme and 5 surrounded by one or more coating layers. The coating layers provide improved storage stability, reduce dust formation, or improve the color or appearance of the granule. The coating layers may include a salt, polyethylene glycol (PEG), methyl hydroxy propyl cellulose (MHPC), and polyvinyl alcohol (PVA). 10 The enzyme may also be formulated in an encapsulate form. The enzyme may be encapsulated in a matrix, preferably a water-soluble or water dispersible matrix (e.g., water-soluble polymer particles), for example as described in WO 2016 / 023685. An example of a water-soluble polymeric matrix is a matrix composition comprising polyvinyl alcohol. 15 The enzyme may also be encapsulated in core-shell microcapsules, for example as described in WO 2015 / 144784. Such core-shell capsules can be prepared using a number of technologies known in the art, e.g., by interfacial polymerization using either a water-in-oil or an oil-in-water emulsion, where polymers are crosslinked at the surface of the droplets in the emulsion (the interface between water and oil), thus forming a wall / membrane around each droplet / capsule. 20 Preferably the enzyme may also be present as a multienzyme co-granule which includes one or more additional preferred enzyme selected from the group consisting of lipases, peroxidases, laccases, first-wash lipases, proteases, mannanase, oxidases, amylase, and mixtures thereof. 25 Enzyme stabilizing system: The enzyme-containing compositions described herein may optionally comprise from 0.001% to 10%, in some examples from about 0.005% to about 8%, and in other examples, from about 0.01% to about 6%, by weight of the composition, of an enzyme stabilizing system. The enzyme stabilizing system can be any stabilizing system which is compatible with the detersive enzyme. 30 Such a system may be inherently provided by other formulation actives, or be added separately, e.g., by the formulator or by a manufacturer of detergent-ready enzymes. Such stabilizing systems can, for example, comprise calcium ion, boric acid, propylene glycol, short chain carboxylic acids, boronic acids, chlorine bleach scavengers and mixtures thereof, and are designed to address different stabilization problems depending on the type and physical form of 35 the cleaning composition. In the case of detergent compositions comprising protease, a P0000295EP CPL 30 reversible protease inhibitor, such as a boron compound, including borate, 4-formyl phenylboronic acid, phenylboronic acid and derivatives thereof, or compounds such as calcium formate, sodium formate and 1,2-propane diol may be added to further improve stability. 5 Brightening agents: Optical brighteners or other brightening or whitening agents may be incorporated at levels from 0.01% to 1.2%, by weight of the composition. Commercial brighteners suitable for the present invention can be classified into subgroups, including but not limited to: derivatives of stilbene, pyrazoline, coumarin, benzoxazoles, carboxylic acid, methinecyanines, dibenzothiophene-5, 5-10 dioxide, azoles, 5- and 6-membered-ring heterocycles, and other miscellaneous agents. Preferred commercially available Brighteners includes Tinopal AMS-GX by Ciba Geigy Corporation, Tinopal UNPA-GX by Ciba-Geigy Corporation, Tinopal 5BM-GX by Ciba-Geigy Corporation. The brighteners may be added in particulate form or as a premix with a suitable solvent, for example nonionic surfactant, monoethanolamine, propane diol. 15 Fabric hueing agents: The composition may comprise a fabric hueing agent (sometimes referred to as shading, bluing or whitening agents). Typically, the hueing agent provides a blue or violet shade to fabric. Hueing agents can be used either alone or in combination to create a specific shade of hueing 20 and / or to shade different fabric types. This may be provided for example by mixing a red and green-blue dye to yield a blue or violet shade. Hueing agents may be selected from any known chemical class of dye, including but not limited to acridine, anthraquinone (including polycyclic quinones), azine, azo (e.g., monoazo, disazo, trisazo, tetrakisazo, polyazo), including 30 premetallized azo, benzodifurane and benzodifuranone, carotenoid, coumarin, cyanine, 25 diazahemicyanine, diphenylmethane, formazan, hemicyanine, indigoids, methane, naphthalimides, naphthoquinone, nitro and nitroso, oxazine, phthalocyanine, pyrazoles, stilbene, styryl, triarylmethane, triphenylmethane, xanthenes and mixtures thereof. Suitable fabric hueing agents include dyes, dye-clay conjugates, and organic and inorganic pigments. 30 Bleach and bleach activator: The solid laundry detergent composition preferably includes a bleach system having a bleach and bleach activator. Highly preferably, the composition is substantially free of pre-formed peracid. The composition may preferably include (a) from 1 wt.% to 20 wt.% sodium percarbonate; (b) from 0.5 wt.% to 5 wt.% bleach activator; and (c) from 0.5 wt.% to 5 wt.% P0000295EP CPL 31 chelant. The bleach activator may comprise sodium tetraacetylethylenediamine, and wherein the composition may comprise from 0.5 wt.% to 5 wt.% sodium tetraacetylethylenediamine. Chelant: 5 The composition may preferably include a chelant. Preferably the chelant may comprise sodium salt of methylglycine diacetic acid (MGDA), and wherein the composition may comprise from 0.5 wt.% to 5 wt.% sodium salt of methylglycine diacetic acid (MGDA). The chelant may comprise ethylenediamine disuccinic acid (EDDS), and wherein the composition may comprise from 0.5 wt.% to 5 wt.% ethylenediamine disuccinic acid (EDDS). The chelant may comprise 10 disodium 4,5-dihydroxy-1,3-benzenedisulfonate, and wherein the composition may comprise from 0.5 wt.% to 5 wt.% disodium 4,5-dihydroxy-1,3- benzene disulfonate. Preferably the chelant is gluconate. Cationic surfactant: 15 Suitable cationic surfactants include alkyl pyridinium compounds, alkyl quaternary ammonium compounds, alkyl quaternary phosphonium compounds, alkyl ternary sulphonium compounds, and mixtures thereof. Preferred cationic surfactants are quaternary ammonium compounds having the general formula: (R)(R1)(R2)(R3)N+X- wherein, R is a linear or branched, substituted or unsubstituted C6 to C18 alkyl or alkenyl moiety, R1 and R2 are independently selected from 20 methyl or ethyl moieties, R3 is a hydroxyl, hydroxymethyl or a hydroxyethyl moiety, X is an anion which provides charge neutrality, preferred anions include: halides, preferably chloride; sulphate; and sulphonate. Fillers: 25 Optionally the solid laundry detergent composition includes fillers such as sodium sulphate, sodium chloride, calcite, dolomite, or mixtures thereof. Preferably the filler is selected from sodium sulphate, sodium chloride and mixtures thereof. Fabric softening agent: 30 The composition may preferably include a fabric softening agent. The fabric softening agent is preferably a cellulase enzyme. Commercially available cellulases include Carezyme®, Carezyme®Premium, Celluzyme®, Celluclean®, Celluclast®, Endolase®, Renozyme®; Whitezyme®Celluclean®Classic, Cellusoft®(Novozymes A / S), Puradax®, Puradax HA, and Puradax EG (available from Genencor International Inc.) and KAC-500(B)™ (Kao Corporation). P0000295EP CPL 32 The fabric softening agent is preferably a clay. More preferably the clay is selected from the group consisting of kaolinite, smectite, bentonite (montmorillonite) and mixtures thereof. The clay preferably has a weight average particle size ranging from 180 micrometers to 1400 micrometres. In the detergent composition according to the present invention, the clay is 5 preferably present in an amount from 2 wt.% to 20 wt.%, preferably from 2 wt.% to 10 wt.%, more preferably from 2 wt.% to 5 wt.%. The fabric softening agent is preferably a silicone. Preferred silicones are selected from polydialkylsiloxane, especially polydimethylsiloxane; amino functionalized silicone; and anionic silicones, especially carboxyl functionalized silicone. Preferably the silicone is a polydimethylsiloxane. Preferably the fabric softening agent includes 10 a cationic polymer. Preferably the cationic polymer is a cationic polysaccharide. Preferred example of cationic polysaccharide is a cationic cellulose derivative. Preferably a quaternary ammonium salt of modified cellulose, still preferably the cationic polymer is a quaternary ammonium salt of hydroxy cellulose. An example of this polymer is polyquaternium-10, marketed under the brand name UCARE™ Polymer, for example type JR-400 and LR-400 15 (supplied by Amerchol Corporation). More preferably the cationic polysaccharide may be used in combination with neutralized soap to improve the fabric softening benefits. To improve the fabric softening benefits, it is desirable to provide a chelating agent along with the fabric softening agent. Preferably the chelating agent is a phosphonate. HEDP in its acid 20 form or salt form with alkali metal, potassium, alkaline earth metal, ammonium or substituted ammonium is a highly preferred chelating agent. In the detergent composition according to the present invention, the chelating agent is preferably present in an amount from 0.1 wt.% to 5 wt.%, preferably from 0.1 wt.% to 3 wt.%, more preferably from 0.1 wt.% to 1 wt.%. 25 Foam enhancing ingredient: Preferably the solid laundry detergent composition includes a foam enhancing ingredient selected from the group consisting of: (i) a co-surfactant (I) selected from cationic polysaccharide, alkyl amine salt of alkyl benzene sulphonate, a siloxane comprising a polyoxyalkylene group, amide surfactant, or mixtures thereof; (ii) a cosurfactant (II) which when 30 added into the solid laundry detergent composition having a spray-dried detergent particle with a primary anionic detersive surfactant, reduces the dynamic surface tension of an aqueous solution of the primary anionic detersive surfactant by at least 2 mN / m upon addition of the cosurfactant to the aqueous solution, where the surface tension is measured using maximum bubble pressure tensiometer BP 100, at 100 milliseconds and where the ratio of cosurfactant to 35 the primary anionic detersive surfactant in the aqueous solution is from 1:1 to 1:200 and P0000295EP CPL 33 wherein the total amount of the primary anionic surfactant and the cosurfactant in the aqueous solution ranges from 0.02 wt.% to 0.15 wt.%; and mixtures thereof. Preferably the slipperiness promoting agent is a polymer. More preferably the polymer is 5 selected from the group consisting of acrylic anionic polymer, long chain nonionic polyethylene oxide polymer, glucamide based polymer, polysaccharide / cellulosic polymer, hyperbranched polymer, hypo conjugated polymer and mixtures thereof. Preferably the slipperiness promoting agent is an acrylic acid polymer. Preferably an anionic 10 acrylic acid polymer. Suitable example of the acrylic anionic polymer includes those commercially available from SNF under the tradename Flogel™and includes Flogel™FG 820, Flogel™FG840 and Flogel™MS 850. Preferably the amount of acrylic based anionic polymer in the solid laundry detergent composition ranges from 0.05 wt.% to 4 wt.%, more preferably from 0.05 wt.% to 2 wt.% still preferably from 0.05 wt.% to 1.5 wt.%, further preferably from 0.05 15 wt.% to 1 wt.%. Preferably the slipperiness promoting agent is a long chain polyethylene oxide polymer. Preferably the polymer are nonionic. Preferably the long chain polyethylene oxide polymer has a weight average molecular weight of 100,000 Daltons or more, still preferably a weight average 20 molecular weight of 100,000 Daltons to 10,000,000 Daltons. Suitable examples of the commercially available long chain polyethylene oxide polymer include Polyox® WSR polyethylene oxide having a weight average molecular weight, Mw, of 5,000,000 Daltons available from The Dow Chemical Company and Polyox WSR N- 60K polyethylene oxide having a weight average molecular weight of 2, 000,000 Daltons available from The Dow25 Chemical Company. Preferably the amount of long chain polyethylene oxide polymer having weight average molecular weight of 100,000 Daltons or more in the solid laundry detergent composition ranges from 0.05 wt.% to 2 wt.% 30 Preferably the slipperiness promoting agent is an alkyl glucamide. More preferably N-methyl glucamide. The alkyl glucamide are non-ionic in which the hydrophilic part (an amino sugar derivative) and the hydrophobic part (a fatty acid) are linked by amide bonds. Preferably the alkyl glucamide has a general formula (Ib) P0000295EP CPL 34 wherein R is a linear or branched, saturated or unsaturated hydrocarbyl group comprising 7 to 21 carbon atoms. More preferably a linear, saturated alkyl group comprising 7 to 21 and Ra is a C1to C4alkyl radical. Particularly Ra in the formula (Ib) is a methyl radical. 5 Preferably the alkyl glucamide is a N-methyl glucamide which has a formula (IIb) ……. Formula (IIb) wherein R is a linear or branched, saturated or unsaturated hydrocarbyl group comprising 7 to 10 21 carbon atoms. Non-limiting examples of the alkyl glucamide slipperiness promoting agent is N-octanoyl-N- methyl glucamide, N-nonanoyl-N-methyl glucamide, N-decanoyl-N-methyl glucamide, N- dodecanoyl-N-methyl glucamide, N-cocoyl-N-methyl glucamide, available under the trade name 15 of GlucoPure Foam from Clariant, N-lauroyl / myristoyl-N-methyl glucamide, (available under the trade name of GlucoPure Beg from Clariant, and N-octanoyl / decanoyI-N-methyl glucamide, available under the trade name of GlucoPure Wet by Clariant. Preferably the amount of alkyl glucamide slipperiness promoting agent present in the solid 20 laundry detergent composition ranges from 0.05 wt.% to 2 wt.%. Preferably the slipperiness promoting agent is a cellulosic polymer. The cellulosic polymer are selected from alkyl cellulose, alkoxyalkyl cellulose, carboxyalkyl cellulose, alkyl carboxyalkyl cellulose, sulphoalkyl cellulose and mixtures thereof. Suitable carboxymethyl cellulose have a 25 degree of carboxymethyl substitution ranging from 0.5 to 0.9 and a molecular weight ranging from 100,000 Daltons to 300,000 Daltons. Suitable carboxymethyl cellulose have a degree of substitution greater than 0.65. More preferably the cellulosic polymer includes carboxymethyl cellulose, methyl cellulose, hydroxypropyl methylcellulose and mixtures thereof. Preferably the carboxymethyl cellulose is a sodium salt of carboxymethyl cellulose. P0000295EP CPL 35 Preferably the amount of cellulosic polymer present in the solid laundry detergent composition ranges from 0.05 wt.% to 2 wt.%. 5 In addition to the above-mentioned slipperiness promoting agent, it is advantageously found that ingredients such as smectite clay, particularly bentonite clay; cationic surfactant, particularly CPC, CTAB; cationic polymer such as those commercially available under the tradename Sokalan HP 20 from BASF or under the tradename Softcat SK-MH and Softcat SL30 available commercially from Dow; fatty acids in amounts ranging from 1 to 3 wt.%, 10 glycerol, polyvinyl alcohol having molecular weight from 85,000 to 124,000 Daltons may be added to the composition for enhancing the slipperiness or soppiness sensorials of the wash liquor. Other ingredients which may also be advantageously included in the composition are polysaccharides in particular alginate, guar gum. Preferably the slipperiness promoting agent further includes a hydroxy alkyl guar gum preferably hydroxy propyl guar gum. Preferably the 15 level of substitution is 0.6 or above, more preferably 1.0 to 1.5 and most preferably 1.2. Preferably the hydroxy alkyl guar gum is available commercially under the tradename Jaguar®HP 11 has a degree of substitution of 0.35 to 0.45; Jaguar HP®60 has a degree of substitution of about 0.6; Jaguar®HP 80 has a degree of substitution of about 0.8 and Jaguar HP®120. 20 Cleaning ingredient: Preferably the solid laundry composition includes a cleaning ingredient which is selected from the group consisting of: (i) amphoteric surfactant; (ii) amphoteric surfactant and a N-acylated lactam compound; (iii) amphoteric surfactant and a nonionic alkoxylated surfactant; (iv) amphoteric surfactant and a silicone surfactant; (v) amphoteric and a non-ionic homopolymer. 25 Preferably the amphoteric surfactant is a betaine or amine oxide. More preferably the betaine type amphoteric surfactant is selected from alkyl betaines, alkylamidoalkyl betaines and alkyl sulphobetaines. Preferably the amine oxide type amphoteric surfactant is selected from alkyl amine oxide, alkylamidoalkyl amine oxide or mixtures thereof. Most preferably the amphoteric30 surfactant is a cocamidopropyl betaine (CAPB). Preferably N-alkylated lactam compound is present in the solid detergent composition in an amount ranging from 0.2 wt.% to 2 wt.%. of the composition. Preferably the N-alkylated lactam compound is PVP. Preferably the cleaning ingredient is a mixture of PVP and CAPB. P0000295EP CPL 36 Preferably the cleaning ingredient is a mixture of R- (EO)n-(PO)m-(EO)n -R’ block copolymer wherein m is an integer from 10 to 130, each n is independently an integer from 2 to 60; and where R and R’ are each independently selected from the group consisting of H, OH, C1to C18alkyl or C1to C18hydroxyalkyl and CAPB. Useful R- (EO)n-(PO)m-(EO)n -R’ block copolymer 5 described herein are commercially available under the tradename PLURONIC® and includes the series PE 3100, PE 3500, PE 4300, PE 6100, PE 61200, PE 6200, PE 6400, PE 6800, PE 8100, PE 9200, PE 9400, PE 10100, PE 10400, PE 10500 more preferably PE6400, PE6800, PE9200, PE430015 and PE8100 (BASF SE). Preferably the silicone surfactant herein described are commercially available under the 10 tradename SILWET®and includes Silwet L-77 (from Supreme Silicone) or polyether or polybetaine polysiloxane copolymer under the tradename ABIL®. Preferred silicone surfactants are sold under the SILWET trademark or under the ABIL®B trademark. Preferably the cleaning ingredient is a mixture of Silwet L-77 and CAPB. Preferably the nonionic homopolymer is selected from the group consisting of polyethylene 15 glycol, polypropylene glycol, polybutylene glycol and mixtures thereof. More preferably the homopolymer is a polyethylene glycol, polypropylene glycol, or mixtures thereof. A highly preferred material is polyethylene glycol 6000. Commercially available polyethylene glycol useful for the present invention includes Polymeg 4000 from India Glycols. Preferably the cleaning ingredient is a mixture of polyethylene glycol and CAPB. 20 Dissolution aid: Preferably the solid laundry detergent composition includes a dissolution aid ingredient. Preferably the dissolution ingredient improves the dissolution rate of the composition when added to water. The dissolution agent is preferably a hydrotrope, organic acids and organic25 salts. Fragrance: Preferably the solid laundry composition includes a fragrance. Preferably the fragrance comprises free fragrance, encapsulated fragrance, more preferably microencapsulated fragrance, and mixtures thereof. More preferably the free fragrance may 30 include a fragrance oil. Preferably the encapsulated fragrance has a wall material selected from amine-aldehyde resin, more preferably melamine-formaldehyde; biopolymer wall material, preferably those selected polysaccharide, polypeptides, and mixtures thereof, more preferably the biopolymers comprises those derived from alginate, chitosan, collagen, dextran, gelatin, gum arabic, silk and starch. P0000295EP CPL 37 Visual cues: Preferably the solid laundry composition includes visual cues. The visual cues preferably include carbonate salt, sodium chloride and mixtures thereof. Methods of laundering: 5 According to a second aspect of the present invention, disclosed is a method for laundering a textile surface with the detergent composition according to the first aspect of the present invention comprising the steps of: i) preparing an aqueous wash liquor with an effective amount of foam by contacting the detergent composition according to the first aspect with a liquid; 10 ii) soaking said textile surface in the wash liquor for a predetermined period of time; and, iii) optionally rinsing the textile surface. Preferably the rinsing of the textile surface is carried in less than 3 rinsing steps, preferably less than 2 rinsing steps more preferably in a single rinsing step. 15 According to a second aspect the method includes the step of preparing an aqueous wash liquor of the detergent composition in a liquid. The wash liquor is preferably prepared by dissolving the detergent composition in water. 20 In the next step, preferably the textile surface is subjected to a washing step prior to the aforementioned optional rinsing step. For purposes of the present invention, washing includes, but is not limited to, scrubbing, wiping and mechanical agitation. The compositions are preferably employed at concentrations of from about 200 ppm to 25 about 10,000 ppm in solution. The water temperatures preferably range from about 5°C to about 100°C. Machine laundry methods herein typically comprise treating soiled laundry with an aqueous wash solution in a washing machine having dissolved or dispensed therein an 30 effective amount of the detergent composition in accordance with the invention. By an effective amount of the detergent composition, it is meant from 20 g to 300 g of product dissolved or dispersed in a wash solution of volume from 5 to 65 liters, as are typical product dosages and wash solution volumes commonly employed in conventional machine laundry methods. 35 Hand-washing methods, and combined handwashing with semiautomatic washing P0000295EP CPL 38 machines are also included. According to a third aspect of the present invention disclosed is the use of an anionic surfactant comprising sulphonate surfactant and an alkyl alkoxylated secondary nonionic surfactant 5 wherein the nonionic surfactant has a general formula (I) in a solid detergent composition to provide greasy oily stain removal performance. According to third aspect of the present invention disclosed is the use of an anionic surfactant comprising sulphonate surfactant and an alkyl alkoxylated secondary nonionic surfactant 10 wherein the nonionic surfactant has a general formula (I) in a solid in a detergent composition to provide antiredeposition benefits. The invention will now be illustrated more fully with the aid of the following non-limiting examples. It will be appreciated that other modifications of the present invention within the skill 15 of those in the art can be undertaken without departing from the spirit and scope of this invention. All of the formulations exemplified hereinafter are prepared via conventional formulation and mixing methods unless specific methods are given. All parts, percentages, and ratios herein are by weight unless otherwise specified. Some20 components may come from suppliers as dilute solutions. The levels given reflect the weight percent of the active material, unless otherwise specified. The excluded diluents and other materials are included as "Minors". Examples 25 Example 1: Different solid laundry detergent compositions were prepared according to the present invention as shown in table 1 and their stain removal benefits were studied. The observations are recorded in table 1 below. Table 1 Ingredients Ex A Ex 1 Ex 2 Anionic sulphonate surfactant 15.9 15.9 15.9 (LAS) PAS 2.5 2.5 2.5 Na carbonate 21 21 21 Na silicate 6.9 6.9 6.9 P0000295EP CPL 39 Layering agent (zeolite, calcite) 7 7 7 Alkoxylated secondary nonionic 0 1 0.5 surfactant (Tergitol 15s9) Amphoteric surfactant (CAPB) 0 0 0.8 Fillers (NaCl, Na sulphate) Upto 100 Upto 100 Upto 100 Stain removal Index (SRI) – 88.2 90.4 91.2 Sebum stain The data shows that the combination of anionic surfactant and the alkoxylated secondary nonionic surfactant according to the present invention gives improvement in the difficult to remove, sebum stain. The benefits are also seen when the composition includes a mixture of 5 anionic surfactant, alkoxylated secondary nonionic surfactant and amphoteric surfactant. Example 2: Different low pH solid laundry detergent compositions were prepared according to the present invention as shown in table 2 and their stain removal benefits were studied. The observations are recorded in table 2 below. 10 Table 2 Ingredients Ex B Ex 3 Ex 4 Anionic sulphonate surfactant 15.93 15.93 15.93 (LAS) PAS 2.6 2.6 2.6 Trisodium citrate 4.73 4.73 4.73 Magnesium citrate 0.83 0.83 0.83 Silica 0.8 0.8 0.8 Citric acid 4.37 4.37 4.37 Na carbonate 0 0 0 Na silicate 1.35 1.35 1.35 Layering agent (zeolite, calcite) 7.09 7.09 7.09 Alkoxylated secondary nonionic 0 1 0.5 surfactant (Tergitol 15s9) Amphoteric surfactant (CAPB) 0 0 0.8 Fillers (NaCl, Na sulphate) Upto 100 Upto 100 Upto 100 The sebum stain removal benefits were clearly seen in the low pH solid laundry detergent composition according to the present invention having a combination of anionic surfactant and the alkoxylated secondary nonionic surfactant according to the present invention (Ex 3) which 15 gives improvement in the difficult to remove, sebum stain (SRI value for sebum was 78) as P0000295EP CPL 40 compared to the comparative composition Ex B which had a sebum stain removal (SRI value) of 75.8. The benefits are also seen when the composition includes a mixture of anionic surfactant, alkoxylated secondary nonionic surfactant and amphoteric surfactant. 5 The detergent composition according to the present invention may be formulated using a low pH spray dried detergent particle having the composition as shown in table 3. Table 3 Ingredients Ex 1a Ex 1b Ex 1c NaLAS 30 30 30 Magnesium citrate 0.56 0 0 Aluminium citrate 0 2.9 0 Aluminium citrate and complex 0 0 3.18 of aluminium with citric acid Sodium citrate (monosodium, 7.91 5.1 5 disodium, trisodium) Sodium carbonate 0 0 0 Sodium silicate 1.09 0.6 0 NDOM 1.28 0.7 0.64 Water 2 2 2 Sodium sulphate (filler) Upto 100 Upto 100 Upto 100 10 Example 3: Evaluation of the stain removal performance of solid laundry composition having different alkoxylated nonionic surfactant. Different solid laundry detergent compositions were prepared with a composition as provided in 15 table 4 below and their stain removal benefits were studied. The observations are recorded in table 4 below. Evaluation of the stain removal performance: The stain removal performance study was conducted in a tergo-to-meter. The wash load 20 capacity used was a liquor to cloth ratio of 40. The water used for the washing purpose had a water hardness of 20 degree (3:1) when measured at a temperature of 28°C. The wash load comprised of 100% knitted cotton. The detergent composition concentration in the prepared wash liquor was 1.5 grams per litre. The washed clothes were rinsed in clean water and the stain removal index reading were measured. 25 P0000295EP CPL 41 The SRI value was calculated by measuring the L, a, b values using an Artix Scanner for stains and the stain removal index was determined by the following equation: 5 A soiled stain swatch having sebum stain was added during the washing. The SRI value for each stain was calculated and are provided in Table 4 below. 10 Table 4 Ingredients Ex C Ex D Ex 5 Anionic surfactant (LAS) 15 15 15 Alkoxylated secondary nonionic surfactant (Tergitol 15s9) 0 0 1 Pluronic PE6800 1 0 0 C12 to C15 ethoxylated alcohol with 7-9 EO 0 1 0 Sulphate / salt Upto 100 Upto 100 Upto 100 Stain removal performance Sebum stain removal index 67.4 67.2 68.5 The data provided in table 4 clearly demonstrates that a composition (Ex 5) according to the invention comprising a combination of Tergitol 15-S-9 (nonionic alkoxylated secondary surfactant which has a general formula (I)) and the anionic surfactant comprising sulphonate 15 surfactant shows improved stain removal performance as compared to the comparative examples (Ex C and Ex D) having a nonionic alkoxylated surfactant which is not in the secondary form.

Claims

P0000295EP CPL 42 Claims 1. A solid laundry composition comprising: i. an anionic surfactant comprising a sulphonate surfactant; and, ii. an alkyl alkoxylated secondary nonionic surfactant; wherein the alkyl alkoxylated secondary nonionic surfactant has a general formula (I)(I) wherein n is at least 1 where n1is at least 1 where n + n1 ranges from 8 to 15 x is a real number from 0 to 15 y is a real number from 1 to 20.

2. A composition according to claim 1 wherein the sulphonate surfactant is an alkyl aryl sulphonate surfactant, more preferably an alkyl benzene sulphonate surfactant, further preferably a linear C12 to C18 alkyl benzene sulphonate surfactant.

3. A composition according to any one of the preceding claims wherein the composition comprises an amphoteric surfactant, preferably selected from amine oxide amphoteric surfactant, betaine amphoteric surfactant and mixtures thereof.

4. A composition according to claim 3 wherein the betaine amphoteric surfactant selected from alkyl betaine, alkylamidoalkyl betaine, alkyl phosphobetaine, alkyl sulphobetaine and mixtures thereof, preferably CAPB.

5. A composition according to claim 3 amine oxide amphoteric surfactant selected from the group consisting of alkyl amine oxide, alkylamidoalkyl amine oxide and mixtures thereof.

6. A composition according to any one of the preceding claims wherein the anionic surfactant is present in an amount ranging from 1 wt.% to 50 wt.% by weight of the composition.P0000295EP CPL 43 7. A composition according to any one of the preceding claims wherein the amphoteric surfactant is present in an amount ranging from 0.2 wt.% to 5 wt.% by weight of the composition.

8. A composition according to any one of the preceding claims wherein the alkoxylated secondary nonionic surfactant is present in an amount ranging from 0.2 wt.% to 5 wt.% by weight of the composition.

9. A composition according to any one of the preceding claims wherein the composition comprises anionic surfactant other than the sulphonate surfactant, preferably wherein the anionic surfactant other than the sulphonate surfactant is selected from the group consisting of sulphate surfactant, rhamnolipid biosurfactant, carboxylate surfactant, sulphated ethoxylated Guerbet alcohol.

10. A composition according to any one of the preceding claims wherein the composition comprises a further nonionic surfactant selected from C8to C18alkyl ethoxylates, C6to C12alkyl phenol alkoxylates, alkyl polysaccharides, preferably alkyl polyglycosides; methyl ester ethoxylates; polyhydroxy fatty acid amides; ether capped poly(oxyalkylated) alcohol surfactants; and mixtures thereof.

11. A composition according to any one of the preceding claims wherein the solid laundry composition comprises a spray dried detergent particle having a pH of 4 or more, preferably a pH ranging from 4 to 9, wherein the spray dried particle comprises: i. 2 wt.% to 50 wt.% anionic surfactant; and, ii. (a) organic acid, preferably organic carboxylic acid or (b) a salt of organic carboxylic acid selected from the group consisting of (i) organic carboxylic acid salt of alkaline earth metal; (ii) organic carboxylic acid salt of aluminium, (iii) an aluminium complex of organic carboxylic acid, (iv) organic carboxylic acid salt of alkali metal and combinations thereof.

12. A composition according to any one of the preceding claims wherein the composition comprises an antiredeposition agent preferably selected from the group consisting of polyacrylates, copolymer of acrylic acid or methacrylic acid with maleic acid, copolymer of maleic acid with vinyl ester and combinations thereof., copolymer of acrylic acid with maleic acid having a molar ratio of acrylic to maleic of 1:1 to 1:9.P0000295EP CPL 44 13. A method of laundering a textile surface with the detergent composition according to any one of the preceding claims comprising the steps of: i. preparing a wash liquor by mixing the detergent composition according to any one of the preceding claims with a liquid, preferably water; ii. soaking said textile surface in the wash liquor for a predetermined period of time; and, iii. optionally rinsing the textile surface.

14. Use of an anionic surfactant comprising a sulphonate surfactant, preferably an amphoteric surfactant and an alkyl alkoxylated secondary nonionic surfactant wherein the alkyl alkoxylated secondary nonionic surfactant has the general formula (I) in a solid laundry composition to provide improved greasy / oily stain removal performance.

15. Use of an anionic surfactant comprising a sulphonate surfactant, preferably an amphoteric surfactant and an alkyl alkoxylated secondary nonionic surfactant wherein the alkyl alkoxylated secondary nonionic surfactant has the general formula (I) in a detergent composition to provide improved antiredeposition performance.

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