WO2022219102A1

WO2022219102A1 - Solid composition

Info

Publication number: WO2022219102A1
Application number: PCT/EP2022/059978
Authority: WO
Inventors: Alison CUMMINS; Alastair Richard Sanderson; Craig Warren Jones
Original assignee: Unilever Ip Holdings B.V.; Unilever Global Ip Limited; Conopco, Inc., D/B/A Unilever
Priority date: 2021-04-15
Filing date: 2022-04-14
Publication date: 2022-10-20
Also published as: BR112023021000A2

Abstract

The present invention relates to a unit dose laundry composition. In particular a unit dose solid laundry composition having a surfactant with a carbon atom obtained from captured carbon. There is a need for a unit dose solid laundry detergent that has an increased concentration of renewable components yet has performance at least comparable to that of traditional surfactants. According to a first aspect of the present invention disclosed is a unit dose solid laundry composition including a surfactant having C₈ to C₂₂ alkyl chain and a mole average of from 1 to 40 alkoxylate units, preferably ethoxylate units, at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprising a carbon obtained from carbon capture.

Description

Solid composition

Field of the invention

The present invention relates to a solid unit dose laundry composition. In particular a solid unit dose laundry composition having a surfactant having a carbon atom obtained from captured carbon.

Background of the invention

Solid unit dose laundry compositions are known. Unit dose compositions such as detergent tablets, solid detergent composition enclosed within a water-soluble pouch are one of the most preferred consumer products, due to ease of handling, dosage and storage. Such compositions are used to clean surfaces, such as bathroom, kitchen surfaces as well as to clean laundry surfaces.

Surfactants are the main cleaning ingredient present in the unit dose laundry composition. The synthetic surfactant currently used are predominantly petroleum derived. Consumers are becoming increasing aware of environment impact of their everyday choices. They are constantly on the look for solid laundry composition which are environmentally friendly. There is a need for a surfactant which are from non-fossil sources and which provide similar cleaning performance as provided by traditional surfactants obtained from fossil-fuel source.

The performance of a solid unit dose laundry detergent composition is largely determined based on its ability to remove stain and dirt from the textile article. Surfactants are the main ingredients which enable to improve the stain removal performance of a solid unit dose detergent composition. Solid unit dose laundry detergent composition generally includes anionic surfactant preferably in combination with other anionic or nonionic surfactant to give optimum stain removal performance. It is thus a challenge to replace the existing fossil fuel source surfactant with more renewable surfactant. In solid unit dose laundry detergent composition, the stability of the composition is another important feature. The composition particularly when in the form of a particulate or free flowing powder form, must maintain its free flowing characteristics under different storage conditions for prolonged periods.

Improvement in the dissolution of the solid unit dose laundry composition particularly under low temperatures conditions is highly desirable. Improvement in the unit dose compositions dissolution characteristics in use while at the same time which delivers excellent storage stability in terms of strength even in presence of moisture conditions is desirable.

When the unit dose composition is in the form of a solid composition enclosed within the water-soluble pouch it is desirable that the ingredients in the solid laundry composition does not interact adversely with the water-soluble pouch.

Yet another characteristic of the solid laundry detergent composition which is of paramount importance from a consumer standpoint is the fragrance performance.

It is desired to provide improvement in the freshness profile of the solid laundry composition. Many consumers judge the efficacy of the product based on perfume performance. Especially handwash consumers desire that the perfume is released in the wash liquor and that the perfume sensorial lasts on the wet fabrics after laundering. An improvement in the perfume compatibility with other ingredient in the detergent composition is yet another essential feature of the solid laundry detergent composition which improves its perfume performance.

It is an object of the present invention to provide a solid laundry unit dose composition which has a reduced environmental impact, while maintaining product performance such as cleaning performance, whiteness maintenance, storage stability and powder properties.

It is yet another object of the present invention to provide a solid laundry unit dose composition that has increased levels of non-virgin fossil fuels derived surfactant yet has performance comparable to that of traditional surfactant. It is yet another object of the present invention to provide a solid laundry unit dose composition that has increased levels of non-virgin fossil fuels derived surfactant yet has acceptable fragrance performance while maintaining good powder properties.

Summary of the invention

We have surprisingly found that the one or more of the abovementioned desirable performance is provided by a solid unit dose laundry detergent composition having a surfactant according to the present invention with a carbon obtained from carbon capture.

According to a first aspect of the present invention disclosed is a solid unit dose laundry composition including a surfactant having a Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate units, preferably ethoxylate units, at least one alkoxylate/ethoxylate unit or one alkyl chain comprising a carbon obtained from carbon capture.

According to a second aspect of the present invention disclosed is a method of preparing a solid unit dose laundry composition according to the invention, the method comprising the steps of: i) obtaining a surfactant comprising a Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate unit, preferably ethoxylate units, at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprising carbon obtained from carbon capture; ii) incorporating the surfactant into a solid laundry composition. iii) converting the solid laundry composition into a unit dose composition by extrusion, tabletting or enclosing within a water-soluble package.

According to a third aspect of the present invention disclosed is a use of a solid unit dose laundry composition according to the first aspect or obtainable according to the second aspect to reduce the carbon emission into the atmosphere. According to another aspect of the present invention disclosed is a use of a surfactant comprising a Csto C22 alkyl chain and a mole average of from 1 to 40 ethoxylate units, wherein at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprises a carbon obtained from carbon capture in a solid unit dose laundry composition according to the first aspect or obtainable according to the second aspect to provide a scent marker in the solid unit dose laundry composition to indicate the use of a captured carbon in the manufacture of the surfactant.

The term ‘virgin fossil fuels’ refers to fossil fuel sources (coal, crude oil, natural gas) which have not been used for any other purpose, i.e. has not been burnt for energy, or is not the waste gas from an industrial process.

Detailed description of the invention According to a first aspect of the present invention disclosed is a solid unit dose laundry composition including a surfactant with a carbon obtained from carbon capture.

Solid unit dose laundry composition

A solid laundry composition according to the present disclosure encompasses a variety of unit dose composition which may be include cast and extruded forms including, for example, solids, pellets, blocks, bars, and tablets, particulate or powder composition enclosed within a water soluble pouch, 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. It should be understood that the term “solid” refers to the state of the detergent composition under the expected conditions of storage and use of the solid detergent composition. In general, it is expected that the detergent composition will remain a solid when provided at a temperature of up to about 37°C and preferably greater than 50°C. The solid unit dose laundry composition according to the present invention preferably has a pH from 7.0 to 13, preferably 7.0 to 10.5, still preferably 7.0 to 10.2, still further preferably from 8.5 to 10.2, when measured at 1 wt.% dilution in de-ionised water at 25°C. The composition may preferably include a buffer. The unit dose composition according to the present invention may be made via a variety of conventional methods known in the art and includes but is not limited to the mixing of ingredients, including dry-mixing, followed by compaction such as agglomerating, extrusion, tabletting. The unit dose composition enclosed within a water soluble pouch may be in the particulate or powder form and where such detergent composition may be made by any of the conventional processes, especially preferred is the technique of slurry making and spray drying or the non-tower route. Preferably the composition is used for laundering fabrics in a machine or using a manual-washing method. Preferably the composition is in the form of a spray-dried powder or particulate free-flowing form.

The solid unit dose laundry composition according to the present invention preferably has from 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. The solid unit dose 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.

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 material is present only as an impurity in one of the other materials deliberately included.

Surfactant having alkyl chain and ethoxylate units The solid unit dose laundry composition includes a surfactant having Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate units, preferably ethoxylate units. The surfactant includes at least one alkoxylate unit preferably ethoxylate unit or one alkyl chain comprising carbon obtained from carbon capture.

Carbon capture

The term “carbon capture” as used herein means the capture of a Ci carbon molecules, mostly, but not exclusively, as a gas and usually the Ci carbon molecule is carbon dioxide (CO2) or carbon monoxide (CO) (hereinafter CO2 and CO are referred to as COx). Carbon is preferably captured from waste emissions (e.g. exhaust gases from industrial processes, known as “point sources”) or from the atmosphere. By capturing the Ci carbon molecules, they are removed from or prevented from entering the environment. Carbon sourced from carbon capture contrasts with carbon from virgin fossil fuels (coal, crude oil, natural gas, etc.), in that captured carbon has already been used at least once; for example captured carbon may have been burned to produce energy and is captured to enable a second use of the carbon, whereas carbon from virgin fossil fuels have been extracted for that singular purpose. By capturing and utilising carbon, carbon can be used again, leading to less carbon in the atmosphere and reduced use of virgin fossil fuels. The carbon captured may be in any physical state, preferably as a gas.

The term carbon capture excludes the direct use of fossil fuels e.g. crude oil, natural gas, coal or peat as the source of carbon. However, carbon may be captured from the waste products arising from usage of fossil fuels, so for example carbon captured from the exhaust gases of the burning of fossil fuels in power generation. The carbon capture includes but not limited to capture of CO2, CO, methane, methanol or combinations thereof.

The compositions described herein include the surfactant comprising at least one alkoxylate preferably ethoxylate unit and/or one alkyl chain derived from carbon obtained from carbon capture. To obtain the surfactant from carbon capture, carbon must be captured from carbon sources, separated (where required) and utilized or transformed into an ingredient for use in the solid unit dose laundry composition. The capture, separation and transformation may happen in one continuous process or may be separate steps carried out at different locations.

Sources of carbon: Carbon capture maybe point source carbon capture or direct carbon capture from ambient air. Point source carbon capture refers to the capture of carbon at the point of release into the atmosphere. Capturing CO_x is most effective at point sources, such as large fossil fuel, steel works, or biomass energy facilities, natural gas electric power generation plants, industries with major CO_x emissions, natural gas processing plants, synthetic fuel plants and fossil fuel-based hydrogen production plants. Capturing the CO_x from flue gas is most prevalent. Alternatively, the point source carbon capture may be mobile, for example attached to a vehicle and capturing the carbon in the exhaust gases. Point source carbon capture may be preferable due to the efficiency of capturing the carbon in a high concentration.

Dispersed sources emit more than half of the global CO_x emission. Direct capture of CO_x from ambient air also referred to as air capture, is one of the few methods capable of systematically managing dispersed emissions. Direct carbon capture refers to capturing carbon from the air, where it is significantly diluted with other atmospheric gases. While extracting CO_x from air is also possible, although the far lower concentration of CO_x in air compared to combustion sources presents significant engineering challenges. Preferably, the carbon captured is from a point source.

Preferably the sources for carbon capture includes but is not limited to algae crop, other crops including land-based crops, municipal residue biomass, agricultural wastes, sewage sludge, timber milling wastes, refuse derived fuel, paper making wastes, ethanol and other biofuel-making wastes, construction wastes, carbon captured from the environment or from industrial flue gases using alternative biological, chemical, or mechanical means. In each of these cases, the carbon containing material is brought to the processing station and is subjected to the remaining process steps alone or in combination with any other carbon feedstocks. Preferably the carbon capture involves removal from large fixed-point sources such as power plants. Other non-limiting examples of sources include CO_x released by burning of waste, plastics, polymers, hydrocarbons, carbonaceous materials, wood fuels, coal, naphtha, oil, gasoline, diesel fuels, kerosene, petroleum, liquefied petroleum gas, natural gas, bottled gas, methane, butane, propane, gasoline additives, ethanol, methanol, biodiesel, mono alkyl ester or combinations thereof.

Still other non-limiting sources involves air contained high CO_x levels which arise from natural biological process. Non-limiting examples include decomposition of organic materials, product of farming (example from livestock, field burning of agricultural residuals), which generate CO_xin a direct or indirect manner (example release of methane), releasing of contaminants to surrounding air supplies. Animal agricultural methane emissions are released from massive “lagoons” used to store untreated farm animal waste; these are then oxidized in atmosphere to form CO_x. Carbon dioxide may also be from the fermentation of sugars and starches, carbon dioxide is also produced as by-products in hydrogen generating plants, ammonia generating plants.

CO_x Capture:

Carbon capture refers to the capture or sequestration of C1 carbon molecules (e.g. carbon monoxide, carbon dioxide, methane or methanol). When the carbon molecules are captured, they are removed from or prevented from entering the environment and in particular prevented from directly entering the atmosphere. Preferably, the method used to capture carbon is selected from biological separation, chemical separation, absorption, adsorption, gas separation membranes, diffusion, rectification, condensation or any combination thereof.

Processes that capture CO_x from the air may use solvents that either physically or chemically bind CO_x from the air. Solvents preferably include strongly alkaline hydroxide solutions like, for example, sodium and potassium hydroxide. Hydroxide solutions in excess of 0.1 molarity can readily remove CO_x from air. Higher hydroxide concentrations are desirable, and an efficient air contactor will use hydroxide solutions in excess of 1 molar. Sodium hydroxide is a particularly convenient choice, but other solvents may also be of interest. Specifically, similar processes may be useful for organic amines as well. Preferably the amines are primary, secondary or tertiary amines, more preferably tertiary amines along with primary and/or secondary amines. Examples of carbon capture include amine scrubbing in which CO_x-containing exhaust gas passes through liquid amines to absorb most of the CO_x. The carbon-rich gas is then pumped away. Preferably, the processes that collects CO_x from the air may use solvents selected from, sodium and potassium hydroxide or organic amines. CO_xmay be removed from the atmosphere or ambient air, by supplying a CO_x absorbing liquid. The CO_x is then recovered from the liquid for use. Electrochemical methods for carbon dioxide recovery from alkaline solvents for carbon dioxide capture from air may be used as in US 2011/108421.

Also preferred for capturing CO_xare methods comprising uptake of carbon dioxide and concentrating the CO_x content. These are, in particular, amine process chemical absorption methods, temperature swing absorption method (TSA), pressure swing absorption method (PSA), cryogenic distillation method, and membrane method. The amine-type CO_x concentration process denotes any process for separating and concentrating CO_x absorption/desorption cycle in a solution including an amine.

The most frequently used methods for CO_x uptake from industrial gases are the chemical absorption methods. The absorbents used are the solutions of amines, preferably primary amines, secondary amines and/or tertiary amine for example, monoethanolamine (MEA), diethanolamine (DEA), diglycolamine (DGA), N- methyldiethanolamine (MDEA), 2-amino-2-methylpropanol (AMP), or piperazine (PZ). These absorbents are very reactive with CO_xand effect a high volume of CO_xat a fast rate. Apart from amine solutions, one can use aqueous ammonia solutions. On the other hand, ammonia type CO_x concentration process denotes any process for separating and concentrating CO_xby absorption/desorption cycle in a solution including ammonia. Further preferably the concentration is by PSA method which includes any process for gas separation by pressure swing absorption, employing cyclical variation of the pressure between a high pressure, called the adsorption pressure, and a low pressure, called the regeneration pressure. The process may also be a TSA method which includes any process for gas separation by temperature swing absorption, employing cyclical variation of the temperature between a high temperature, called the adsorption temperature, and a low temperature, called the regeneration temperature. In the “cryogenic distillation” are included any process for gas separation, including a stage at temperature below ambient temperature of the unit place, and wherein at least part of the CO_xgas is either liquefied and/ or freezed at solid state, including in that case a freezing-in and freezing-out cycle to provide an enriched CO_xgas. In the present specification, the term "membrane process" denotes any process for gas separation, or for separating gas dissolved in solution in ionic form, that employs a synthetic membrane. The molecules retained by the membrane constitute the retentate, whereas those which pass through the membrane give rise to a permeate.

The CO_x absorption method using amine absorbents may be used for obtaining carbon dioxide from exhaust gases. This CO_x absorption technology preferably allows for removing about (75 to 96%) CO_x and obtaining a very pure CO_x stream (>99 vol.%). The CO_x absorption and desorption process in the amine method may be carried out depending on the parameters of the gas to be purified and on the destination of the obtained gas in the pressure range of from 0.15 bar(abs) to 6 bar(abs).

Carbon capture may include post combustion capture whereby the CO_x is removed from “flue” gases after combustion of a carbon fuel, e.g. fossil fuel or a biofuel. Carbon capture may also be pre-combustion, whereby the fossil fuel is partially oxidized, for instance in a gasifier. The CO from the resulting syngas (CO and H2) reacts with added steam (H2O) to produce CO2 and H2. The resulting CO2 can be separated/captured from the exhaust stream. Capture may be by oxy-fuel combustion carbon capture, in which a fuel is burned in oxygen rather than air. This results in a gas mixture comprising mostly steam and CO_x. The steam and carbon dioxide or carbon monoxide are separated by cooling and compressing the gas stream. Preferably, the carbon is captured from flue gases after combustion of a carbon fossil fuel.

Alternatively, the captured CO2 may be captured as a solid or liquid for example as a bicarbonate, carbonate or hydroxide from which the CO2 is extracted using well know chemistries.

It is preferred that the concentration of CO_xin the captured carbon stream is at least 10% by volume on a dry gas basis, preferably at least 30%, still preferably at least 40%, further preferably at least 50%, still further preferably at least 60%, still more preferably at least 70%, further preferably at least 80% and still further more preferably at least 90% and most preferably its 100% captured carbon.

Ci carbon molecules sourced from carbon capture and suitably separated from other gases are available from many industrial sources. Suitable suppliers include Ineos and Opus-12 Incorporated.

Transformation:

The captured carbon is preferably placed in relatively close proximity to the processing unit for transformation into chemical products. The carbon may be temporarily stored before usage or used directly.

The capture carbon may be transformed biologically or chemically. Preferably the Ci molecule is transformed into: 1. Short chain intermediates such as short chain alcohols or,

2. Hydrocarbon intermediates such as hydrocarbon chains: alkanes, alkenes, etc.

Preferably the Ci molecules are transformed into short chain intermediates preferably with C1 to C6 chain length, more preferably ethanol, ethylene or ethylene oxide.

The short chain intermediates and the hydrocarbon intermediates may be converted further to make the components of surfactants using well known chemistries. For example, but not limited to chain growth reactions to form longer chain alkenes/olefins, alkanes, longer chain alcohols, aromatics and ethylene, ethylene oxide which is an excellent starter chemical for various ingredients in detergent compositions. Preferably, the carbon captured is transformed into ethylene or ethylene oxide.

Various transformation pathways via such intermediates are possible. Preferably, the carbon captured is transformed by a process selected from chemical transformation by Fischer-Tropsch using a hydrogen catalyst; conversion to ethanol chemically using a catalyst of copper nanoparticles embedded in carbon spikes; solar photo thermochemical alkane reverse combustion; or biological transformation, for example fermentation. A suitable example of transformation involves a process where a reactor converts carbon dioxide, water and electricity to methanol or ethanol and oxygen. Examples of this process are described in W021252535, W017192787,

W02 0132064, W020146402, W019144135 and WO20112919. Preferred routes for transforming captured carbon to ethanol include:

1. CO2 or CO can be chemically transformed to liquid hydrocarbons by Fischer Tropsch (FT) reactions with H2 using metal catalysts. CO can be captured as CO or converted into carbon monoxide by a reverse water gas shift reaction. FT reactions are gas-based so solid Ci carbon sources may require gasification (the product of which is often terms “syngas”. The name comes from its use as intermediates in creating synthetic natural gas (SNG)).

2. CO2 can be converted to ethanol chemically using a catalyst of copper nanoparticles embedded in carbon spikes.

3. Solar photo-thermochemical alkane reverse combustion reaction is a one-step conversion of CO2 and water into oxygen and hydrocarbons using a photo thermochemical flow reactor.

4. Biological transformation involves organisms which transform the carbon to usable chemicals. This excludes natural process of bio-sequestration of CO2 by plants via photosynthesis and then using the plant itself as a feedstock. Biological transformation as used here means harnessing organisms to produce a desired feedstock (such as a short chain alcohol).

Preferably biological transformation comprises fermentation of the Ci carbon by micro organisms such as Crfixing bacteria to useful chemicals. An example of microbial transformation is gas fermentation (the Ci feedstock is in gaseous form). Gas fermentation is defined as the microbial conversion of gaseous substrates including but not limited to carbon monoxide (CO), carbon dioxide (C02), hydrogen (H2), and methane (CFU). Gas fermentation can offer the benefit of not using heterologous feedstocks such as sugars that affect food supply chain and can be used for the conversion of (waste) gas to valuable liquid chemicals. Gas fermentation usually refers to the liquid fermentation of gaseous sources. CO- and C0₂-rich waste gases are an attractive substrate for gas fermentation. Many industrial processes produce large amounts of carbon-rich gases that are often left unused, thereby contribute to elevated concentrations of CO2 and CO in the atmosphere. The availability of substrate for gas fermentation is broadened when considering biomass feedstock converted into carbon- and energy-rich gas streams via gasification. Gasification is the conversion of (e.g. solid, liquid) carbon-rich feedstock to gaseous products which can involve partial or complete oxidation. The gasification can be by thermo-chemical conversion and biological conversion. Gasification can for example be achieved using the four steps of drying, pyrolysis, oxidation, and reduction. Gasification of biomass typically results in a mixture including CO, CO2, H2 and CFU. Gasification could also be applied to alternative carbon rich substrates including plastic and even fossil fuels like coal.

Preferably at least part of the Ci captured gas and preferably all, Ci captured gas is reduced by gas-fermentation. Gas-fermenting microorganisms are able to convert the gaseous Ci to useful reduction products which can be further processed to make precursors for surfactants as explained below. For example, certain microbial processes can use syngas produced by a COx reduction reactor. A syngas output stream of CO, H2, and CO2 may be used as a feedstock for a downstream bioreactor where microbial processes take place to make a range of useful compounds (examples include ethanol, acetic acid, butanol, butyric acid, methane). Such compounds are considered Ci reduction products although these may have more than 2 carbon atoms. Preferably the Ci reduction products have from 2 to 4, preferably from 2 to 3 and even more preferably 2 carbon atoms. Preferred microorganisms includes Clostridium autoethanogenum, Clostridium carboxidovorans, Clostridium ljungdahlii, Clostridium ragsdalei, Clostridium thermoaceticum, Clostridium thermoautotrophicum , Eubacterium limosum, Peptostreptococcus productus, Butyribacterium methylotrophicum, acetogens, and/ or E. cob.

There are a variety of microorganisms that can be used in fermentation processes, including anaerobic bacteria such as Clostridium ljungdahlii strain PETC or ERI2, among others [See e.g., US Patent Nos. 5,173,429; 5,593,886 and 5,821,111; and references cited therein; see also W098/00558. WO 00/68407 discloses strains of Clostridium ljungdahlii for the production of ethanol. The ability of micro-organisms to grow on gaseous Ci as a sole carbon source was first discovered in 1903. This was later determined to be a property of organisms that use the acetyl coenzyme A (acetyl CoA) biochemical pathway of autotrophic growth (also known as the Woods-Ljungdahl pathway and the carbon monoxide dehydrogenase / acetyl CoA synthase (CODH/ACS) pathway). A large number of anaerobic organisms including carboxydotrophic, photosynthetic, methanogenic and acetogenic organisms have been shown to metabolize CO to various end products, namely CO2, H2, methane, n-butanol, acetate and ethanol. While using CO as the sole carbon source, all such organisms produce at least two of these end products.

Anaerobic bacteria, such as those from the genus Clostridium, have been demonstrated to produce ethanol from CO, CO2 and H2 via the acetyl CoA biochemical pathway. For example, various strains of Clostridium ljungdahlii that produce ethanol from gases are described in WO 00/68407, EP 117309, US patent nos. 5,173,429, 5,593,886, and 6,368,819, WO 98/00558 and WO 02/08438. The bacterium Clostridium autoethanogenum sp. is also known to produce ethanol from gases (Abrini et al., Archives of Microbiology 161 , pp 345-351 (1994)). The process may further include a catalytic hydrogenation module. In embodiments utilizing a catalytic hydrogenation module, the acid gas depleted stream is passed to the catalytic hydrogenation module, prior to being passed to the deoxygenation module, wherein at least one constituent from the acid gas depleted stream is removed and/or converted prior to being passed to the deoxygenation module. At least one constituent removed and/or converted by the catalytic hydrogenation module is acetylene (C2H2).

The process may include at least one additional module selected from the group comprising: particulate removal module, chloride removal module, tar removal module, hydrogen cyanide removal module, additional acid gas removal module, temperature module, and pressure module. Further examples of carbon capture technologies suitable to generate the ethanol stock for use in manufacturing ethoxy sub-units for use in the surfactants described herein are disclosed in WO 2007/117157, WO 2018/175481, WO 2019/157519 and WO 2018/231948.

Preferably, the carbon captured is transformed into ethanol, ethylene or ethylene oxide.

Captured carbon located in alkyl chain

The surfactant according to the first aspect of the present invention includes a Csto C22 alkyl chain.

The Csto C22 alkyl chain has preferably at least one carbon atom comprising carbon obtained from carbon capture, at least one carbon atom from other renewable sources such as preferably plant, algae or yeast or a combination of carbon atoms from carbon capture and other renewable source.

Where the carbon derived from carbon capture is located in an alkyl chain, preferably on average at least 10 wt.%, at least 50 wt.% of the carbons in the alkyl chain are derived from carbon capture, more preferably at least 70 wt.%, most preferably all of the carbons in the alkyl chain are derived from carbon capture. Preferably, less than 90 wt.%, preferably less than 10 wt.% of the carbon atoms in the alkyl chain are obtained direct from virgin fossil fuels.

The carbon atom in the Cs to C22 alkyl chain of the surfactant is preferably obtained from a renewable source, where the surfactant may be an alcohol ethoxylate, alkyl carboxylate, or an alkyl ether sulphate. The Cs to C22 alkyl chain surfactant preferably has a carbon atom obtained from carbon capture, and if not from a carbon capture source, or in addition to a carbon capture source then preferably from a triglyceride. A renewable source is one where the material is produced by natural ecological cycle of a living species, preferably by a plant, algae, fungi, yeast or bacteria, more preferably plants, algae or yeasts. Preferably the Cs to C22 alkyl is obtained from a renewable source, more preferably from a plant, algae or yeast. Addition renewable source other than a carbon capture source may be an oil. Oil typically includes triglycerides, free fatty acids or a combination of triglycerides and free fatty acids, and other trace compounds. The term “oils” include fats, fatty acids, waste fats, oils, or mixtures thereof. Oils are a renewable source and include but not limited to, coconut oil, babassu oil, castor oil, algae byproduct, beef tallow oil, borage oil, camelina oil, Canola® oil, choice white grease, coffee oil, corn oil, Cuphea Viscosissima oil, evening primrose oil, fish oil, hemp oil, hepar oil, jatropha oil, Lesquerella Fendleri oil, linseed oil, Moringa oleifera oil, mustard oil, neem oil, palm oil, perilla seed oil, poultry fat, rice bran oil, soybean oil, stillingia oil, sunflower oil, tung oil, yellow grease, cooking oil, and other vegetable, nut, or seed oils.

Preferred plant sources of oils are rapeseed, sunflower, maze, soy, cottonseed, olive oil and trees. The oil from trees is called tall oil. Most preferably palm and rapeseed oils are the source.

Algal oils are discussed in Energies 2019, 12, 1920 Algal Biofuels: Current Status and Key Challenges by Saad M.G. et al. A process for the production of triglycerides from biomass using yeasts is described in Energy Environ. Sci. , 2019,12, 2717 A sustainable, high-performance process for the economic production of waste-free microbial oils that can replace plant-based equivalents by Masri M.A. et al.

Preferred non-edible plant oils may be selected from the fruit and seeds of Jatropha curcas, Calophyllum inophyllum, Sterculia feotida, Madhuca indica (mahua), Pongamia glabra (koroch seed), Linseed, Pongamia pinnata (karanja), Hevea brasiliensis (Rubber seed), Azadirachta indica (neem), Camelina sativa, Lesquerella fendleri, Nicotiana tabacum (tobacco), Deccan hemp, Ricinus communis L. (castor), Simmondsia chinensis (Jojoba), Eruca sativa. L., Cerbera odollam (Sea mango), Coriander ( Coriandrum sativum L.), Croton megalocarpus, Pilu, Crambe, syringa, Scheleichera triguga (kusum), Stillingia, Shorea robusta (sal), Terminalia belerica roxb, Cuphea, Camellia, Champaca, Simarouba glauca, Garcinia indica, Rice bran, Hingan (balanites), Desert date, Cardoon, Asclepias syriaca (Milkweed), Guizotia abyssinica, Radish Ethiopian mustard, Syagrus, Tung, Idesia polycarpa var. vestita, Alagae, Argemone mexicana L. (Mexican prickly poppy, Putranjiva roxburghii (Lucky bean tree), Sapindus mukorossi (Soapnut), M. azedarach (syringe), Thevettia peruviana (yellow oleander), Copaiba, Milk bush, Laurel, Cumaru, Andiroba, Piqui, B. napus, Zanthoxylum bungeanum.

Captured carbon located in the alkoxylate unit, preferably ethoxylate unit The surfactant according to the first aspect of the present invention includes from 1 to 40 mole average alkoxylate units, preferably 1 to 40 mole average ethoxylate units. The surfactant includes at least one alkoxylate unit, preferably an ethoxylate unit comprising carbon obtained from carbon capture, that is from a gaseous Ci source, preferably a gaseous CO_x.

Where the carbon derived from carbon capture is located on an alkoxylate/ethoxylate group, preferably on average at least 10 wt.%, still preferably at least 50 wt.% of the ethoxylate carbons in the molecule are derived from carbon capture, more preferably at least 70 wt.%, most preferably all the alkoxylate preferably ethoxylate carbons in the molecule are derived from carbon capture. In a single ethoxylate monomer, one or both carbons may be carbons obtained from carbon capture, preferably both carbons are carbons obtained from carbon capture. Preferably, more than 10 wt.%, preferably more than 90 wt.% of the ethoxylate groups comprise carbon atoms obtained from carbon capture-based sources. Alternate sources of carbon include plant-based carbon, for example ethanol obtained from the fermentation of sugar and starch (i.e. ‘bio’ ethanol). Preferably, less than 90 wt.%, preferably less than 10 wt.% of the ethoxylate groups comprise carbon atoms obtained directly from virgin fossil fuels.

Preferably, the ethoxylate units in the surfactant comprises at least one ethoxylate containing two carbon atoms obtained from carbon capture. More preferably, at least 10 wt.% of the ethoxylate groups and especially preferably at least 70 wt.% comprise two carbon atoms obtained from carbon capture and most preferably all the ethoxylate groups present in the non-ionic surfactant contain two carbon atoms obtained from carbon capture.

To produce alkoxylates from carbon capture, first corresponding alkanol produced as outlined above is dehydrated to alkylene. This is a common industrial process. The alkylene is then oxidised to form alkylene oxide. To produce ethoxylates from carbon capture, first ethanol produced as outlined above is dehydrated to ethylene. This is a common industrial process. The ethylene is then oxidised to form ethylene oxide.

Depending on the desired material, different routes are available.

Preferably the surfactant comprising a C8-22 alkyl chain and a mole average of from 2 to 100 ethoxylate units is obtainable by a process including the step of using one or more surfactant precursor obtained via gas fermentation. Preferably the gas-fermentation reduces a gaseous Ci substrate to a C2 reduction product, the reduction product is preferably ethanol. Preferably the gaseous Ci substrate is CO_x.

Alcohol alkoxylate surfactant The surfactant according to the present invention is preferably an anionic surfactant, non-ionic surfactant or mixtures thereof.

The surfactant according to the present invention is preferably an alcohol alkoxylate surfactant.

The alkanol/ethanol manufactured through carbon capture processes is used to generate alkoxy/ethoxy subunits and, together with appropriate alkyl, chains is formed into the desired surfactant. In a first step the ethanol (C2H5OH) is dehydrated to ethylene (C2H4) and this is a common industrial process. Then, the ethylene is oxidised to form ethylene oxide (C2H4O). Finally, the ethylene oxide is then reacted with a long chain alcohol (e.g. C12/14 type fatty alcohol) via a polymerisation type reaction. This process is commonly referred to as ethoxylation and gives rise to surfactants that are known as alcohol ethoxylates and which are non-ionic surfactants.

The solid unit dose laundry detergent composition according to the present invention includes the surfactant which is preferably a non-ionic surfactant. Preferably the composition comprises from 0.1 wt.% to 20 wt.% non-ionic surfactant based on the total weight of composition. Still preferably the solid laundry composition includes at least 0.5 wt.%, still preferably at least 1 wt.%, further preferably at least 2 wt.%, furthermore preferably at least 5 wt.%, but not more than 18 wt.%, still preferably not more than 15 wt.%, further preferably not more than 10 wt.% alcohol alkoxylates.

Such non-ionic surfactants include, for example, polyoxyalkylene compounds, i.e. the reaction product of alkylene oxides (such as ethylene oxide or propylene oxide or mixtures thereof) with starter molecules having a hydrophobic group and a reactive hydrogen atom which is reactive with the alkylene oxide. Such starter molecules include alcohols, acids, amides or alkyl phenols. Where the starter molecule is an alcohol, the reaction product is known as an alcohol alkoxylate. The polyoxyalkylene compounds can have a variety of block and heteric (random) structures. For example, they can comprise a single block of alkylene oxide, or they can be diblock alkoxylates or triblock alkoxylates. Within the block structures, the blocks can be all ethylene oxide or all propylene oxide, or the blocks can contain a heteric mixture of alkylene oxides. Examples of such materials include Cs to C22 alkyl phenol ethoxylates with an average of from 5 to 25 moles of ethylene oxide per mole of alkyl phenol; and aliphatic alcohol ethoxylates such as Cs to Cis primary or secondary linear or branched alcohol ethoxylates with an average of from 2 to 40 moles of ethylene oxide per mole of alcohol.

The alkoxylate unit in the alcohol alkoxylate surfactant may be selected from ethoxylate units, propoxylate (propylene oxide) units or the surfactant may comprise a combination of the ethoxylate units, propoxylate (propylene oxide) units.

If propoxylation is present, preferably the average degree of propoxylation is between 1 to 25, more preferably between 2 and 20, most preferably between 5 and 10. In a preferred embodiment the surfactant is a reaction product of a higher linear alcohol and a mixture of ethylene and propylene oxides, containing a mixed chain of ethylene oxide and propylene oxide, terminated by a hydroxyl group. When mixed alkoxylate groups are present, the alkoxy groups can be randomly ordered or present in blocks, preferably are present in blocks. For example, mixed ethoxy (EO)/propoxy (PO) groups might be ordered in EO/PO blocks, PO/EO blocks, EO/PO/EO blocks or PO/EO/PO blocks. The alkoxylate unit in the surfactant may be present in the form of a block copolymer. Preferably the block copolymer has at least one block of a polyoxypropylene (PO) and having at least one other block of polyoxyethylene (EO) attached to the polyoxypropylene (PO) block. Additional blocks of polyoxyethylene or polyoxypropylene can be present in a molecule. These are nonionic surfactants. Particularly useful polyoxypropylene-polyoxyethylene block copolymer are those comprising a centre block of polyoxypropylene units and blocks of polyoxyethylene units to each side of the centre block. Also suitable are those comprising a centre block of polyoxyethylene units and blocks of polyoxypropylene units to each side of the centre block. The alkoxylate units in the surfactant may preferably comprises at least one propoxylate unit (PO) containing a carbon atom obtained from carbon capture. More preferably, at least 50% of the propoxylate groups and especially preferably at least 70% comprise carbon atoms obtained from carbon capture and most preferably all the propoxylate groups present in the surfactant contain a carbon atom obtained from carbon capture.

Preferably, less than 90%, preferably less than 10% of the propylene oxide groups comprise carbon atoms obtained from fossil fuel-based sources. Preferably, more than 10%, preferably more than 90% of the propylene oxide groups comprise carbon atoms obtained from carbon capture-based sources.

A preferred class of additional nonionic surfactant for use in the invention includes aliphatic C12 to C15 primary linear alcohol ethoxylates with an average of from 3 to 20, more preferably from 5 to 10 moles of ethylene oxide per mole of alcohol.

The alcohol ethoxylate may be provided in a single raw material component or by way of a mixture of components. Alkyl ether sulphate anionic surfactant

The surfactant according to the present invention is preferably an alkyl ether sulphate surfactant. By sulphonation alcohol ethoxylates may be converted to the anionic alkyl ether sulphate surfactant.

The solid unit dose laundry composition according to the present invention preferably includes from 0.1 wt.% 20 wt.% alkyl ether sulphate anionic surfactant. The alkyl chain has from Cs to C22 carbon atoms, preferably from Cs to C1_8, still preferably Cs to C12 carbon atoms. The alkyl ether sulphate surfactant preferably has from 1 to 30 alkoxylate units, preferably 1 to 20 alkoxylate units, still preferably 1 to 10 alkoxylate units, further preferably 1 to 7 alkoxylate units. Still preferably the alkyl ether sulphate is a has an alkyl chain with 12 carbon atoms and the mole average of alkoxylate units of 1 to 3 units per molecule. Preferably the alkoxylate units are ethoxylate units.

Preferably the solid laundry composition includes 0.1 wt.% to 10 wt.% alkyl ether sulphate anionic surfactant. Still preferably the solid laundry composition includes at least 0.5 wt.%, still preferably at least 1 wt.%, further preferably at least 2 wt.%, furthermore preferably at least 5 wt.%, but not more than 18 wt.%, still preferably not more than 15 wt.%, further preferably not more than 10 wt.% alkyl ether sulphate anionic surfactant. Most preferably the solid laundry composition includes from 0.1 wt.% to 5 wt.%, still preferably from 0.1 wt.% to 2 wt.% alkyl ether sulphate anionic surfactant.

Alkyl ether carboxylate anionic surfactant

The surfactant according to the present invention is preferably an alkyl ether carboxylate surfactant. The solid laundry composition according to the present invention preferably includes from 0.1 wt.% 20 wt.% alkyl ether carboxylate anionic surfactant. The alkyl chain has from Cs to C22 carbon atoms, preferably from Cs to C2_0, still preferably C1₀ to C2₀ carbon atoms. The alkyl ether sulphate surfactant preferably has from 1 to 30 alkoxylate units, preferably 5 to 30 alkoxylate units, still preferably 10 to 20 alkoxylate units. Preferably the alkoxylate units are ethoxylate units. The alkyl chain may be linear or branched, preferably linear. The alkyl chain may be aliphatic or contain one cis or trans double bond.

Preferably the solid laundry composition includes 0.1 wt.% to 10 wt.% alkyl ether sulphate anionic surfactant. Still preferably the solid laundry composition includes at least 0.5 wt.%, still preferably at least 1 wt.%, further preferably at least 2 wt.%, furthermore preferably at least 5 wt.%, but not more than 18 wt.%, still preferably not more than 15 wt.%, further preferably not more than 10 wt.% alkyl ether sulphate anionic surfactant. Most preferably the solid laundry composition includes from 0.1 wt.% to 5 wt.%, still preferably from 0.1 wt.% to 2 wt.% alkyl ether sulphate anionic surfactant. Percent Modern carbon (pMC)

Where the carbon obtained from carbon capture is derived from atmospheric air-based carbon or from bio-based gas emissions (e.g. industrial point emissions), the surfactant can be improved in terms of raising the level of percent modern carbon (or pMC) of the surfactant, and consequently of the composition as a whole. This provides a further way to tune the headspace profile to be distinct from a petrochemical-surfactant derived one. Furthermore, it makes adulteration more difficult.

Measuring the pMC value is based on measuring the level of radiocarbon (CM) which is generated in the upper atmosphere from where it diffuses, providing a general background radiocarbon in the air. The level of CM, once captured (e.g. by biomass) decreases over time, in such a way that the amount of CM is essentially depleted after 45,000 years. Hence the CM level of fossil-based carbons, as used in the conventional petrochemical industry is virtually zero. A pMC value of 100% biobased or biogenic carbon would indicate that 100% of the carbon came from plants or animal by-products (biomass) living in the natural environment (or as captured from the air) and a value of 0% would mean that all of the carbon was derived from petrochemicals, coal and other fossil sources. A value between 0-100% would indicate a mixture. The higher the value, the greater the proportion of naturally sourced components in the material, even though this may include carbon captured from the air. The pMC level can be determined using the % Biobased Carbon Content ASTM D6866-20 Method B, using a National Institute of Standards and Technology (NIST) modern reference standard (SRM 4990C). Such measurements are known in the art are performed commercially, such as by Beta Analytic Inc. (USA). The technique to measure the C_M carbon level is known since decades and most known from carbon- dating archeological organic findings. The particular method used by Beta Analytic Inc., which is the preferred method to determine pMC includes the following:

Radiocarbon dating is performed by Accelerator Mass Spectrometry (AMS). The AMS measurement is done on graphite produced by hydrogen reduction of the CO2 sample over a cobalt catalyst. The CO2 is obtained from the combustion of the sample at

800°C+ under a 100% oxygen atmosphere. The CO2 is first dried with methanol/dry ice then collected in liquid nitrogen for the subsequent graphitization reaction. The identical reaction is performed on reference standards, internal QA samples, and backgrounds to ensure systematic chemistry. The pMC result is obtained by measuring sample C14/C13 relative to the C14/C13 in Oxalic Acid II (NIST-4990C) in one of Beta

Analytic’s multiple in-house particle accelerators using SNICS ion source. Quality assurance samples are measured along with the unknowns and reported separately in a “QA report". The radiocarbon dating lab requires results for the QA samples to fall within expectations of the known values prior to accepting and reporting the results for any given sample. The AMS result is corrected for total fractionation using machine graphite d13C. The d13C reported for the sample is obtained by different ways depending upon the sample material. Solid organics are sub-sampled and converted to CO2 with an elemental analyzer (EA). Water and carbonates are acidified in a gas bench to produce CO2. Both the EA and the gas bench are connected directly to an isotope-ratio mass spectrometer (IRMS). The IRMS performs the separation and measurement of the CO2 masses and calculation of the sample d13C. The solid unit dose laundry composition according to the invention has a pMC level (as a whole), in order of increasing preference, of at least 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90 % and still even more preferably of at least 95%. The solid unit dose laundry composition according to the invention has a pMC level of the surfactant, as based on the total amount of surfactant, in order of increasing preference, of at least 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90 % and still even more preferably of at least 95%. The solid unit dose laundry composition according to the invention has a pMC level of the surfactant of the invention, as based on the total amount of the surfactant of the invention, in order of increasing preference, of at least 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90 % and still even more preferably of at least 95%. Preferably the surfactant obtainable by a process having the step of using one or more surfactant precursor obtained via gas-fermentation has a pMC level of at least 5%, preferably at least 20%, more preferably at least 50 %, still more preferably at least 80 %, as based on the total surfactant. Form of the unit dose composition

The solid unit dose laundry composition according to the present invention may be in the form of a tablet, particulate or powder composition enclosed in a water-soluble package or as an extruded particle. Tablet

In one embodiment, the solid unit dose laundry composition is in the form of a tablet. The tablet includes compressed particulate solid detergent composition. Any suitable compaction process may be used, for example, tabletting or briquetting, but tabletting is the preferred and most suitable process.

The tablet composition may have a single composition, or the tablet may have discrete regions with different composition. Also included are those unit dose composition having two or more tablets with different composition. The compositions of the tablet may be designed for release of different regions at different times during the laundering process. The composition preferably has two phase or even multiphase tablets made by compressing particulate composition having the surfactant. The size of the tablet will suitably range from 10 grams to 160 grams, preferably from 15 grams to 60 grams, depending on the wash conditions under which it is intended to be used, and whether it represents a single dose, a multiple dose or a submultiple dose. The tablet composition preferably includes disintegrant agent chosen, although the list is not exhaustive, in the group comprising clays, cellulose and its derivatives, polyvinyl pyrrolidone, modified or cross-linkable starch.

The tablet may be of any suitable shape, but for manufacturing and packaging convenience is preferably of uniform cross-section, for example, circular (preferred) or rectangular.

Extruded particle

In one embodiment, the solid unit dose composition is in the form of an extruded particle. The extruded particle preferably has a core and a coating. The coated extruded particle is curved. The coated laundry detergent particle may be lenticular (shaped like a whole dried lentil), an oblate ellipsoid, where z and are the equatorial diameters and is the polar diameter; preferably y = z. The coated laundry detergent particle may be shaped as a disc.

The extruded particle is preferably a distorted oblate spheroidal shape with perpendicular dimension x, y and z wherein x is from 1 to 2 mm, y is from 2 to 8 mm, and z is from 2 to 8 mm, where the particle includes from 20 wt.% to 60 wt.% detersive surfactant selected from anionic surfactant, non-ionic surfactant and combinations thereof. The composition also includes from 10 wt.% to 40 wt.% inorganic carbonate salts selected from alkali metal carbonate, alkali metal sesquicarbonate, alkali metal bicarbonate or combinations thereof. Preferably the composition includes from 10 wt.% to 40 wt.% citric acid and/or salts thereof. The surfactant is preferably in the core and the inorganic salts is present preferably in the coating.

Preferably the unit dose laundry composition in the form of an extruded particle is prepared by forming a mixture including from 20 wt.% to 60wt.% detersive surfactant, extruding the mixture to form an extruded material and then coating the extruded material with an inorganic salt in the form of an aqueous solution to form a wet coated extruded material comprising from 1 wt.% to 40 wt.% inorganic salt, followed by removing the water from the wet coated extruded material to form the coated extruded detergent particle. The unit dose solid laundry composition, in the form of an extruded particle, preferably coated extruded particle may advantageously include one or more of the other ingredients mentioned hereinbelow.

Water soluble package enclosing a solid laundry composition In one embodiment, the solid unit dose composition is in the form of a solid laundry composition enclosed in a water-soluble package. The package comprises a water- soluble substrate. The water- soluble substrate may be in the form of woven, non- woven or cast structures. Preferably the water-soluble substrate is thermoplastic. The water-soluble substrate comprises a film forming material.

"Film-forming material" as used herein refers to a material that by itself or in combination with a co-reactive material, such as a crosslinking agent, is capable of forming a self-supporting continuous film on a surface upon curing and preferably includes polymeric material that upon removal of any solvents or carriers present in the polymer emulsion, dispersion, suspension or solution, can coalesce to form a film on at least a horizontal surface and is capable of curing into a continuous film. Such film forming material preferably includes a polymer or monomer capable of producing a polymer material that exhibits properties suitable for making a film or a sheet, or a foamed film or sheet, such as by casting, blow-moulding, extrusion or blown extrusion of the material, as is well known in the art.

Preferably the film-forming material includes polyvinyl alcohol, polyvinyl alcohol copolymers, partially hydrolysed polyvinyl acetate, a modified polyvinyl alcohol preferably modified with a carboxyl group, vinylamide monomer and/or a sulfonic acid group or other functional groups known in the art to improve the solubility in water, polyvinyl acetate, polyvinyl pyrrolidone, carboxymethylcellulose or hydroxypropyl methyl cellulose. Still preferably, the film-forming material includes or consists essentially of vinyl polymers, including homo-polymers and copolymers having hydroxyl or carboxyl groups. Preferred polymers includes polyvinyl alcohol, polyvinyl acetate, partially hydrolysed polyvinyl acetate, a modified polyvinyl alcohol or mixtures thereof. Polyvinyl alcohol, polyvinyl acetate and modified polyvinyl alcohols can provide stable water- soluble substrates that have suitable dissolution rates. Preferably the film- forming material in the water-soluble substrate is a PVOH. Mixtures of polymers can also be used as the film-forming material. Suitable mixtures include for example mixtures wherein one polymer has a higher water-solubility than another polymer, and/or one polymer has a higher mechanical strength than another polymer. Preferably the water-soluble substrate includes a plasticizer. Examples of preferred plasticizer includes, but not limited to glycerol, glycerin, diglycerin, hydroxypropyl glycerine, sorbitol, methylene glycol diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, polyethylene glycols, neopentyl glycol, trimethylolpropame, polyether polyols, ethanolamines, and mixtures thereof. The plasticizer, when present, may be included in the water-soluble substrate material in an appropriate amount, as generally known. Preferably, the plasticizer is a combination of glycerin and polyethylene glycol.

As used herein, the term "water-soluble" not only refers to a structure that is totally water-soluble, but also includes those that are substantially water-soluble but have some material(s) in the water-soluble structure that are not water-soluble; structure which are soluble at different temperature conditions or different pH conditions and also refers to structure which are water-dispersible or water-disintegrable. The water-soluble package typically contains at least one compartment for containing the composition. In some embodiments, the water-soluble package includes two or more compartments. Each compartment can contain same composition or a different composition from the one in another compartment. Alternatively, each compartment may contain a different component (or mixture of components) of a composition from another compartment. For example, the water-soluble package may contain two compartments wherein each compartment is a different mixture of components together constituting a solid laundry unit dose composition. In use, the water-soluble substrate may dissolve in water to release the composition enclosed within the substrate. The laundry composition may be any of solid, noodles, flakes, granular, particulate, tablet form. Preferably the composition is a powder, particulate, tablet or granular form. The water-soluble package may be designed as a dimensionally stable receptacle, for example in the form of a capsule, box, or container. It is also possible and preferred to form the water-soluble package as a non-dimensionally stable container, for example as a pouch or sachet. The shape of this type of water-soluble package may be adapted to a great extent to the use conditions. Various shapes such as tubes, cushions, cylinders, bottles, or disks are suitable. The water-soluble package of the invention is conveniently in the form of a pouch, bag or sachet. Such a sachet may be formed from one or more film or sheets of the water-soluble substrate or from a tubular section of such substrate, but it is most conveniently formed from a single folded sheet or from two sheets, sealed together at the edge regions either by means of an adhesive or, preferably, by heat-sealing. A preferred form of sachet according to the invention is a rectangular one formed from a single folded sheet of the water-soluble substrate sealed on three sides, although the sachet may be of any shape or size known in the art. Disintegrant: To improve the dissolution rate of the substrate, disintegrants are preferably applied on the surface of the water-soluble substrate or they may be applied integrated into the water-soluble substrate or any combination thereof, in order to speed up the dissolution when the water-soluble substrate is immersed in water.

Where present, the level of disintegrant is from 0.1 to 30%, preferably from 1 to 15%, by weight of said water-soluble substrate. Any suitable disintegrant known in the art may be used. Preferred disintegrants for use herein include corn/potato starch, methyl cellulose/celluloses, mineral clay powders, cross-linked cellulose, cross-linked polymer, cross-linked starch. Optional ingredients in the water-soluble package includes release agents, extenders, anti-blocking agents, detackifying agents and mixtures thereof. In a preferred embodiment the composition comprises a taste aversive such as denatonium benzoate and/or a pungent agent such as capsaicin.

The water-soluble substrate preferably has a thickness ranging from 30 micrometers to 200 micrometers. Preferably, the water-soluble substrate has a basis weight in the range from 30 grams per square metre to 70 grams per square metre, more preferably the basis weight in the range from 35 grams per square metre to 50 grams per square metre.

Other ingredients in the solid laundry composition

The solid laundry composition may include one or more of the following ingredients selected from additional anionic surfactant, polymers, enzymes, builder, sequestrant, optical brighteners, perfumes, bleach, bleach activators, antifoams, shading or hueing dyes, pH buffering agents, perfume carriers, hydrotropes, anti-redeposition agents, soil-release agents, anti-shrinking agents, anti-wrinkle agents, dyes, colorants and visual cues.

Additional surfactant:

The additional surfactants includes further anionic surfactant, cationic surfactant, amphoteric surfactant, zwitterionic surfactant, further nonionic surfactant or combinations thereof.

Examples of further anionic surfactant are given in "Surface Active Agents and Detergents" (Vol. I and II by Schwartz, Perry and Berch).

Suitable anionic surfactants include those selected from the group consisting of alkyl sulfates, alkyl sulfonates, alkylaryl sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl sulfosuccinamates, alkyl amidosulfosuccinates, alkyl carboxylates, alkyl amido ether carboxylates, alkyl succinates, fatty acyl sarcosinates, fatty acyl amino acids, fatty acyl taurates, fatty alkyl sulfoacetates, alkyl phosphates, and mixtures of two or more thereof. Non-limiting examples of the preferred anionic surfactant includes linear alkyl benzene sulphonate, primary alkyl sulfate, methyl ester sulphonate or combinations thereof. Nonlimiting examples of anionic surfactants useful herein include: C10 to C20 primary, branched chain and random alkyl sulfates (AS); mid-chain branched alkyl sulfates as discussed in US 6,020,303 and US 6,060,443; mid-chain branched alkyl alkoxy sulfates as discussed in US 6,008, 181 and US 6,020,303; modified alkylbenzene sulfonate (MLAS) as discussed in WO 99/05243, WO 99/05242 and WO 99/05244; methyl ester sulfonate (MES); and alpha-olefin sulfonate (AOS).

Exemplary anionic surfactants are the alkali metal salts of C10 to C18 alkyl benzene sulfonic acids, preferably Cn to C_M alkyl benzene sulfonic acids. In one aspect, the alkyl group is linear. Such linear alkyl benzene sulfonates are known as "LAS". Such surfactants and their preparation are described for example in U.S. Patent Nos. 2,220,099 and 2,477,383. Especially preferred are the sodium and potassium linear straight chain alkylbenzene sulfonates in which the average number of carbon atoms in the alkyl group is from about 11 to 14. Sodium Cn to CM LAS, e.g., C12 LAS, are a specific example of such surfactants. . Each alkyl chain homologue consists of a mixture of all the possible sulfophenyl isomers except for the 1 -phenyl isomer. LAS is normally formulated into compositions in acid (i.e. HLAS) form and then at least partially neutralized in-situ.

Conventional primary alkyl sulfate surfactants have the general formula: R"OS0₃ M⁺ wherein R" is typically a Cs to C20 alkyl (linear or branched, saturated or unsaturated) group, which may be straight chain or branched chain, and M is a water-solubilizing cation. In specific embodiments, R" is a C10 to C15 alkyl group, and M is alkali metal, more specifically R" is C12 to CM alkyl and M is sodium. Examples include sodium lauryl sulphate, ammonium lauryl sulphate and sodium coco sulphate.

Specific, non-limiting examples of anionic surfactants useful herein include: a) Cn to C18 alkyl benzene sulfonates (LAS); b) C10 to C20 primary, branched-chain and random alkyl sulfates (AS); c) C10 to Cie secondary (2,3)-alkyl sulfates having following formulae:

wherein M is hydrogen or a cation which provides charge neutrality, and all M units, whether associated with a surfactant or adjunct ingredient, can either be a hydrogen atom or a cation depending upon the form isolated by the artisan or the relative pH of the system wherein the compound is used, with non-limiting examples of preferred cations including sodium, potassium, ammonium, and mixtures thereof, and x is an integer of at least about 7, preferably at least about 9, and y is an integer of at least 8, preferably at least about 9; d) C10 to C18 alkyl alkoxy sulfates (AES) wherein preferably z is from 1 to 30; e) C10 to C18 alkyl alkoxy carboxylates preferably comprising 1 to 5 ethoxy units; f) mid-chain branched alkyl sulfates as discussed in U.S. Patent Nos. 6,020,303 and 6,060,443; g) mid-chain branched alkyl alkoxy sulfates as discussed in U.S. Patent Nos. 6,008,181 and 6,020,303; h) modified alkylbenzene sulfonate (MLAS) as discussed in WO 99/05243, WO 99/05242, WO 99/05244, WO 99/05082, WO

99/05084, WO 99/05241 , WO 99/07656, WO 00/23549, and WO 00/23548. ; i) methyl ester sulfonate (MES); and j) alphaolefin sulfonate (AOS). The anionic surfactant may be liner, branched or combinations thereof. Anionic surfactants may exist in an acid form and the acid form may be neutralized to form a surfactant salt. Typical agents for neutralization include a metal counter ion base such as a hydroxide, e.g., NaOH or KOH. Further agents for neutralizing anionic surfactants include ammonia, amines, or alkanolamines. Suitable non-limiting examples include monoethanolamine, diethanolamine, triethanolamine, and other linear or branched alkanolamines known in the art, for example, 2-amino-1-propanol, 1- aminopropanol, monoisopropanolamine, or 1-amino-3-propanol.

Preferably the anionic surfactant is a non-soap anionic surfactant. The term “soap” is used herein in its popular sense, i.e. , the alkali metal or alkanol ammonium salts of aliphatic, alkanes, or alkene monocarboxylic acids. Preferably the anionic surfactant includes 0 wt.% to 20 wt.% alkyl sulfates, preferably 0 wt.% to 15 wt.% alkyl sulfates, preferably 0 wt.% to 10 wt.% alkyl sulfates, preferably PAS. The anionic surfactant may also include from 0 wt.% to 10 wt.% MES, preferably 0 wt.% to 5 wt.% MES.

The detergent composition of the present invention includes from 2 wt.% to 70 wt.% of an anionic surfactant, more preferably from 2 wt.% to 40 wt.% of an anionic surfactant. Preferably the detergent composition comprises at least 4 wt.%, still preferably at least 5 wt.%, still preferably at least 10 wt.%, most preferably at least 15 wt.% of the anionic surfactant, but typically not more than 45 wt.%, still preferably not more than 40 wt.%, still further preferably not more than 35 wt.%, still more preferably not more than 30 wt.% and most preferably not more than 20 wt.% of an anionic surfactant based on the weight of the detergent composition. In a most preferred embodiment of the present invention the solid detergent composition includes from 0.1 wt.% to 20 wt.% of the surfactant according to the present invention and 10 wt.% to 99 wt.% of a further anionic surfactant. The additional anionic surfactant is preferably alkyl sulphate, alkyl benzene sulphonate or combinations thereof. Preferably the additional anionic surfactant is LAS. Still preferably the solid laundry composition according to the present invention includes from 0.1 wt.% to 20 wt.% of the alkyl ether sulphate or alkyl ether carboxylate surfactant and 10 wt.% to 99 wt.% of linear alkyl benzene sulphonate (LAS).

Builders: The solid detergent composition preferably includes a builder. The term "builder" as used herein means all materials which tend to remove polyvalent metal ions (usually calcium and/or magnesium) from a solution either by ion exchange, or complexation and/or sequestration, or suspension or precipitation. The builder is preferably a precipitation builder.

Disclosed detergent composition includes from 1 wt.% to 40 wt.% carbonate salt. Examples of the carbonate salt includes alkaline earth metal and alkali metal carbonates or mixtures thereof. The carbonate salt is preferably an alkali metal carbonate, alkaline earth 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 carbonate salt.

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 salt, but typically not more than 15 wt.%, still preferably not more than 13 wt.%, most preferably not more than 10 wt.% of carbonate salt based on the weight of the detergent composition.

In addition to the carbonate builder salt the detergent composition of the present invention may preferably include a further non-carbonate builder. The preferred inorganic non-carbonate builders may be 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 an S1O2: Na₂0 ratio of from 1.0 to 2.8, with ratios of from 1.6 to 2.4 being preferred, 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 S1O2: Na₂0 ratio of 2.0 is the most preferred silicate.

Preferably the composition of the present invention is substantially free of zeolite salt and phosphate builder. By substantially free it is meant that there is no deliberately added carbonate salt in the composition.

Fragrance:

Fragrance are well known in the art and are preferably incorporated into compositions described herein at level of 0.1 wt.% to 5 wt%. The fragrance may be selected from encapsulated fragrance, microcapsules, fragrance oil or mixtures thereof.

Polymers: 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, care polymers, amphiphilic alkoxylated grease cleaning polymers, clay soil cleaning polymers, soil suspending polymers or mixtures thereof.

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 Sokalan^®CP5 (neutralised form) and Sokalan^®CP45 (acidic form).

Soil release polymers are designed to modify the surface of the fabric to facilitate the ease of removal of soil. Suitable soil release polymers are sold by Clariant under the TexCare® series of polymers, e.g. TexCare® SRN240, TexCare® SRN100, 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-capped and non-end-capped unsulphonated PET/POET polymers or combinations thereof.

Sequestrant: The detergent compositions may also preferably comprise a sequestrant material. Examples include the alkali metal citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates. Specific examples include sodium, potassium and lithium salts of oxydisuccinic acid, mellitic acid, benzene polycarboxylic acids, and citric acid. Other examples are DEQUEST™, organic phosphonate type sequestering agents sold by Monsanto and alkanehydroxy phosphonates. Preferably the sequestrants includes Dequest(R) 2066 (Diethylenetriamine penta(methylene phosphonic acid or Heptasodium DTPMP), HEDP (1 -hydroxyethylidene -1 ,1 ,-diphosphonic acid) or combinations thereof. Enzymes:

A composition of the invention may comprise an effective amount of one or more enzyme selected from the group comprising, pectate lyase, protease, amylase, cellulase, lipase, mannanase and mixtures thereof. The enzymes are preferably present with corresponding enzyme stabilizers. Commercially available enzymes from Novozyme and Dupont are preferred.

Shading dyes or hueing agent: Shading dye can be used to improve the performance of the compositions. Preferred dyes are violet or blue. It is believed that the deposition on fabrics of a low level of a dye of these shades, masks yellowing of fabrics. A further advantage of shading dyes is that they can be used to mask any yellow tint in the composition itself. Shading dyes are well known in the art of laundry solid formulation.

Suitable and preferred classes of dyes include direct dyes, acid dyes, hydrophobic dyes, basic dyes, reactive dyes and dye conjugates. Preferred examples are Disperse Violet 28, Direct violet 9, Direct violet 66, Direct violet 99, Solvent 13, Acid Violet 50, anthraquinone dyes covalently bound to ethoxylate or propoxylated polyethylene imine as described in WO2011/047987 and WO2012/119859 alkoxylated mono-azo thiophenes and any combinations thereof.

The shading dye is preferably present is present in the composition in range from 0.0001 to 0.1 wt %. Depending upon the nature of the shading dye there are preferred ranges depending upon the efficacy of the shading dye which is dependent on class and particular efficacy within any particular class.

Preferably the composition according to the present invention is free of shading dye and hueing agent.

Optical brighteners:

It may be advantageous to include fluorescer in the compositions. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts. The total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt %, more preferably 0.01 to 0.5 wt % the composition. Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal ® CBS- X, Di-amine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra, Tinopal 5BMGX, and Blankophor® HRH, and Pyrazoline compounds, e.g. Blankophor SN. Preferred fluorescers are: sodium 2 (4-styryl-3-sulfophenyl)-2H-napthol[1,2-d]triazole, disodium 4,4'-bis{[(4-anilino-6-(N methyl-N-2 hydroxyethyl) amino 1,3,5-triazin-2- yl)]amino}stilbene-2-2' disulfonate, disodium 4,4'-bis{[(4-anilino-6-morpholino-1,3,5- triazin-2-yl)]amino} stilbene-2-2' disulfonate, and disodium 4,4'-bis(2- sulfoslyryl)biphenyl. Most preferably the fluoescer is a di-styryl biphenyl compound, preferably sodium 2,2'-([1,T-biphenyl]-4,4'-diylbis(ethene-2,1-diyl))dibenzenesulfonate (CAS-No 27344-41-8).

Bleach and Bleach activators:

It may be advantageous to include bleach in the compositions. The bleach includes sodium percarbonate or any other hydrogen peroxide precursor. The bleach is preferably a peroxide. Most preferably, the bleach is a percarbonate. Further preferred, the bleach is a coated percarbonate. If present, preferred amounts of bleach are from 1.0 to 25 wt.%, more preferably at from 2.0 to 20 wt. %, even more preferably from 5 to 15 wt.%. The composition preferably also includes a bleach activator such as peroxyacid bleach precursors. The bleach activators include sodium tetraacetylethylenediamine (TAED). The composition may include an acyl hydrazine bleach catalyst.

Method of preparing a solid unit dose laundry composition

According to a second aspect of the present invention disclosed is a method of preparing a solid laundry composition, wherein the method includes the steps of: i) obtaining a surfactant comprising Cs to C22 alkyl chain and a mole average of from 1 to 40 alkoxylate unit, preferably ethoxylate units, at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprising carbon obtained from carbon capture; ii) incorporating the surfactant into a solid laundry composition. iii) converting the solid laundry composition into an unit dose composition by preferably by tabletting to form unit dose tablet, extruding process to form extruded unit dose particle or enclosing the solid laundry composition in a water soluble substrate to form a water soluble package.

According to the second aspect, the invention includes the step of obtaining a surfactant comprising Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate unit, preferably ethoxylate units, at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprising carbon obtained from carbon capture.

Preferably the surfactant is obtained from any of the processes described herein or any suitable alternate routes to obtain the surfactant comprising at least one alkoxylate unit and at least one carbon derived from carbon capture. The next step involves incorporating the surfactant obtained in the previous step into a solid laundry composition. The surfactant may be preferably incorporated into the solid laundry composition at any suitable stage in the process of preparing the solid laundry composition. Preferably when the solid laundry composition is a spray-dried composition the surfactant is preferably added into the slurry. On the other hand when the solid laundry composition is prepared using a non-tower route, the surfactant may be added into the carbonate builder or other laundry ingredient and converted to a premix before incorporating into the solid laundry composition.

Preferably the surfactant according to the present invention comprising Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate unit is made by a process including the steps of: i) providing a gaseous Ci source, preferably the gaseous Ci source comprises CO2, CO or mixtures thereof; and ii) reducing the Ci via microbial gas-fermentation to provide a Ci reduction product, preferably the Ci reduction product is ethanol; and iii) providing the surfactant in a method which incorporates the carbon of the Ci reduction product in the final surfactant, which preferably included a step which converts ethanol into ethylene oxide. The Ci reduction product provided at step (iii) as an intermediate to make the final surfactant is preferably selected from ethanol, acetic acid, butanol, butyric acid, methane or a combination thereof, but more preferably is ethanol. Use of the solid unit dose laundry composition

According to a third aspect of the present invention disclosed is a use of a solid unit dose laundry composition as described herein to reduce carbon emissions into the atmosphere. This is achieved by re-using carbon which is already in the atmosphere or which will be emitted into the atmosphere (e.g. from industry) rather than using carbon from virgin fossil fuels. Ci carbon capture provides to reduce or prevent net release of CO2 in the environment. When Ci carbon captured are derived from combusted fossil sources then the immediate CO2 released can be reduced. When Ci carbons are derived directly from the atmosphere or from bio-sources there may even be a net immediate reduction in atmospheric CO2. Currently, many point sources comprise industrial processes which burn fossil fuels. Until these processes stop using fossil fuels, there is a need to slow-down the CO2 released. Use of ingredients from carbon captured from such processes, the fossil-fuel CO2 has at least one other loop, or cycle before release into the atmosphere via biodegradation of the ingredient. Use of a surfactant comprising a Cs to C22 alkyl chain and a mole average of from 1 to 40 ethoxylate units, wherein at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprises a carbon obtained from carbon capture in a solid unit dose laundry composition to provide a scent marker in the solid unit dose laundry composition to indicate the use of a captured carbon in the manufacture of the surfactant.

Examples

Example 1: The following non-ionic surfactants are illustrative of the alcohol ethoxylates comprising at least one ethoxylate unit or at least one carbon in alkyl chain derived from carbon capture. Non-ionic surfactants 1 and 5 are comparative while 2, 3,4, 6, 7 and 8 are inventive. Table 1: Alcohol ethoxylate (non-ionic surfactant)

Example 2: The following anionic surfactants are alkyl ether sulphates as described herein. Anionic surfactants 1, 5, 9 and 13 are comparative while the remaining are inventive.

Table 2: Alkyl ether sulphate (anionic surfactant)

All the surfactants here are suitable for storage and when incorporated into a solid spray-dried detergent composition provides for free-flowing powder characteristics.

It should be appreciated that the ratio of Carbon Capture to Petro derived carbon can vary within batches. In any case, in the context of these examples, ‘Carbon capture’ means that at least 10% of the carbon atoms in the appropriate part of the molecule are obtained from carbon capture means. By ‘Petro’ is meant that at least 90% of the carbons are obtained from petrochemical means.

By Ethoxylate (XEO) is meant that the surfactant has a mole average number X ethoxylate groups.

By Alkyl (CX) is means that the surfactant has a mole average of X atoms in the alkyl chain.

Example 3:

Sensorial testing was performed on two different non-ionic surfactants, the non-ionic surfactant tested was a Ci2-alcohol ethoxylate with an average of 7EO.

The first Ci2-alcohol ethoxylate-7EO non-ionic surfactant was according to the invention where the EO-polymer moiety was obtained from carbon capture and the alkyl-chain was obtained from a bio-source.

The second Ci2-alcohol ethoxylate-7EO non-ionic surfactant was not according to the invention, where an alkyl chain was derived from a bio-source, but where the EO- polymer chain was derived from a petrochemical source. Both these surfactants were used to make a detergent composition before testing. The detergent composition were either tested at 20 degrees Celsius or heated to 40 degrees Celsius. The compositions, which otherwise contained no added perfumes were tested by a human nose. The Ci2-alcohol ethoxylate-7EO non-ionic surfactant according to the invention provided a sweet, more fruity profile whereas the petrochemically derived surfactant provided a ‘chemical’ odour. The odour perception was verified by two persons independently.

Example 4:

The headspace of the un-fragranced detergent composition having carbon capture surfactant according to the present invention and an un-fragranced detergent composition having petroleum derived surfactant were both analysed for the volatile content in the headspace by GC-MS. The test surfactant is a non-ionic alcohol ethoxylate 7EO comprising carbon capture based ethoxylate groups.

The GC data revealed that the headspace of the detergent composition having the surfactant according to the present invention provided about twice the amount of total volatile compounds.

Claims

1 A solid laundry unit dose composition comprising a surfactant comprising a Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate preferably ethoxylate units, wherein at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprising carbon obtained from carbon capture.

2 A composition according to claim 1 wherein the surfactant is an alcohol ethoxylate, alkyl ether carboxylate, or an alkyl ether sulphate.

3 A composition according any one of the preceding claims wherein the anionic surfactant has a mole average of from 1 to 10 ethoxylate units, preferably 1 to 3 ethoxylate units.

4 A composition according to any one of the preceding claims wherein at least 10% of the ethoxylate groups comprise carbon atoms obtained from carbon capture and most preferably all the ethoxylate groups contain a carbon atom obtained from carbon capture.

5 A composition according to any one of the preceding claims wherein at least 10% of the alkyl chain comprise carbon atoms obtained from carbon capture and most preferably all the alkyl chain contains a carbon atom obtained from carbon capture.

6 A composition according to any one of the preceding claims wherein the carbon obtained from carbon capture is obtainable from physically or chemically binding carbon dioxide from point source, preferably flue gas.

7 A composition according to any one of the preceding claims wherein the carbon obtained from carbon capture is obtainable from physically or chemically binding carbon dioxide from air. A composition according to any one of the preceding claims wherein the carbon obtained from carbon capture comprises carbon obtainable by transforming carbon dioxide to form ethanol by a process selected from chemical transformation by Fischer-Tropsch using a hydrogen catalyst; conversion to ethanol chemically using a catalyst of copper nanoparticles embedded in carbon spikes; solar photo-thermochemical alkane reverse combustion; or biological transformation. A composition according to any one of the preceding claims wherein less than 90%, preferably less than 10% of the ethoxylate groups comprise carbon atoms obtained directly from virgin fossil fuels sources. A composition according to any one of the preceding claims wherein the Cs to C22 alkyl is obtained from a renewable source, more preferably from a plant, algae or yeast. A composition according to any one of the preceding claims wherein the solid unit dose laundry composition is in the form selected from tablet composition, extruded particle, coated extruded particle or particulate composition enclosed within a water- soluble package. A composition according to any one of the preceding claims wherein the total surfactant content in the solid laundry composition comprises: i) 1 wt.% to 20 wt.% of the surfactant; ii) 10 wt.% to 99 wt.% additional anionic surfactant, preferably selected from alkyl sulphate, alkyl benzene sulfonate or mixtures thereof. A composition according to any one of the preceding claims wherein the solid unit dose laundry composition comprises a carbonate builder. A method of preparing a solid unit dose laundry composition according to any one of the preceding claims, the method comprising the steps of: i) obtaining a surfactant comprising a Csto C22 alkyl chain and a mole average of from 1 to 40 alkoxylate unit, preferably ethoxylate units, at least one alkoxylate unit, preferably ethoxylate unit or one alkyl chain comprising carbon obtained from carbon capture; ii) incorporating the surfactant into a solid laundry composition. iii) Converting the solid laundry composition into a unit dose composition selected from a tablet form, extruded particle form or by enclosing the solid laundry composition within a water-soluble package. Use of a solid laundry composition according to any one of the preceding claims to reduce the carbon emission into the atmosphere by retaining the captured carbon in a surfactant having Csto C22 alkyl chain and a mole average of from 1 to 40 ethoxylate units.