Laundry detergent bottle

Abstract

A transparent laundry detergent bottle suitable for containing 0.2 to 5 L of liquid laundry detergent, and comprising the liquid laundry detergent, wherein the bottle includes a bottle body formed of a transparent plastic material and one or more labels, wherein the plastic material of the bottle comprises at least 70% by weight polyethylene terephthalate (PET) based on the total weight of the plastic; and wherein the liquid laundry detergent comprises a surfactant and a dye; and wherein the bottle body includes: a bottom wall providing a base structure for supporting the bottle in an upright position; and a top opening adapted to be closed by a cap; and one or more side walls extending from the bottom wall to the top opening, and wherein when upright positioned on a horizontal plane, the bottle provides a front viewing wall, a rear viewing wall, and two side viewing walls, wherein one or more grooves and / or ridges surround a continuous smooth surface on the front viewing wall of the bottle, wherein the surface area of ​​the smooth front surface is at least 50% of the total front viewing wall surface area of ​​the bottle; and wherein the continuous smooth surface includes a label; and wherein at least 70% of the front viewing wall area is covered by one or more grooves and / or ridges and a label on the continuous smooth front surface.

Description

Technical Field

[0001] This invention relates to a transparent laundry detergent bottle containing liquid laundry detergent. Background Technology

[0002] Liquid detergents typically contain a variety of active ingredients. One of the most common cleaning active ingredients is the surfactant. Surfactants are important for reducing water tension to ensure that the detergent solution (appropriately diluted with water) contacts the surface to be cleaned more effectively. Surfactants also make it easier to suspend / dissolve dirt from the surface into the detergent solution. To reduce the negative effects of calcium and magnesium ions on surfactants, so-called "builders" (complexing agents) are used in detergent compositions. Complexing agents also act to complex transition metal ions during washing, thereby aiding in stain removal.

[0003] Colored liquid laundry detergents are typically packaged in clear containers (single-dose or multi-dose bottles). This combination offers consumers the advantage of easily visually checking the liquid level during use and improved differentiation. The problem is that exposure of the detergent liquid in the clear container to sunlight can cause instability of the formulation over time (odor and / or discoloration). These problems are particularly observed with bottles based on polyethylene terephthalate (PET) plastic.

[0004] The object of this invention is to provide a PET-based liquid laundry detergent bottle containing a dyed liquid laundry detergent that provides improved (color) stability when exposed to sunlight. Summary of the Invention

[0005] In a first aspect of the invention, one or more of the above-mentioned objectives are achieved by a transparent laundry detergent bottle adapted to contain 0.2 to 5 L of liquid laundry detergent, and comprising a bottle body made of a transparent plastic material and one or more labels. • The plastic material of the bottle contains at least 70% by weight polyethylene terephthalate (PET) based on the total weight of the plastic; and Liquid laundry detergents contain surfactants and dyes; and The bottle body includes: ◦ Bottom wall ( Figure 6 ,3), which provides a base structure for supporting the bottle in an upright position; ◦ Top opening ( Figure 5 , 4), which is suitable for being closed by a lid; and ◦ One or more sidewalls that extend from the bottom wall to the top opening, and ◦ When positioned upright on a horizontal plane, the bottle provides a front viewing wall ( Figure 1), rearview wall ( Figure 2 ) and two side walls ( Figure 3 and Figure 4 ), • Wherein, one or more grooves and / or ridges (1) surround a continuous smooth plane (2) on the front viewing wall of the bottle, wherein the surface area of ​​the smooth front plane (2) is at least 50% of the total front viewing wall surface area of ​​the bottle; and • The continuous smooth plane (2) includes the label (8); and • At least 70% of the area of ​​the frontal wall is covered by one or more grooves and / or ridges (1) and labels (8) on a continuous smooth frontal plane (2).

[0006] Surprisingly, it has been found that when the bottle is based on PET, especially when the bottle contains recycled PET, the use of the bottle according to the invention with a specific arrangement of labels, smooth planes and surface grooves and / or ridges improves the color stability of liquid detergents when exposed to sunlight. Detailed Implementation

[0007] Definitions Weight percentages (wt.%) are based on the total weight of the detergent composition, unless otherwise stated or clear from the context. It should be understood that the total weight of the ingredients does not exceed 100% by weight. Whenever the amount or concentration of a component is quantified herein, unless otherwise stated, the quantified amount or concentration refers to the component itself, even if such a component is typically added in the form of a solution or a blend with one or more other components. Furthermore, it should be understood that the verb “comprising” and its variations are used in their non-limiting sense to include the items following the word, but do not exclude items not specifically mentioned. Finally, the use of the indefinite article “a” or “an” to refer to an element does not exclude the possibility of more than one element, unless the context clearly requires the presence of one and only one element. The indefinite article “a” or “an” therefore generally means “at least one”. Unless otherwise stated, all measurements are performed under standard conditions. Whenever a parameter (such as concentration or ratio) is mentioned as being below a certain upper limit, it should be understood that, in the absence of a specified lower limit, the lower limit of the parameter is 0.

[0008] The laundry detergent bottle of the present invention is transparent due to its bottle body formed of a transparent plastic material. As used herein, the term "transparent" refers to the ability of light in the visible spectrum (400-700 nm) to pass through the container wall. Transparency can be quantified as the ratio between the light intensity measured after light has passed through a material sample and the light intensity measured when the material sample has been removed. This ratio can be converted to percentage transmittance (ratio multiplied by 100), ranging from 0% (no incident light passes through the material sample) to 100% (i.e., no difference in light transmission with and without a material sample). As used herein, the term "transparent" means a transmittance of at least 10% in the wavelength range of 400 to 700 nm, preferably at least 20%, 30%, 40%, 50%, 60%, 70%, 80%, in increasing order of preference, and even more preferably at least 90%.

[0009] Preferably, at least 30%, 50%, 70%, and even more preferably at least 85% of the total outer surface area of ​​the bottle is transparent, wherein these figures exclude, but preferably include, the area covered by the label. The transmittance of the plastic material can be suitably measured using a UV-VIS spectrometer, preferably based on the optical path length through 1 mm of plastic. Suitable UV-VIS spectrometers are available from several suppliers, including Thermo Scientific, Perkin Elmer, and Shimadzu.

[0010] The transparency of liquid detergents is appropriately measured in the same manner, but the measurement is standardized using an optical path length of 1 cm. Liquid transparency is typically determined using cuvettes, where the transmittance of the liquid is based on the ratio (×100) between a cuvette containing the liquid detergent and an empty cuvette. Suitable cuvettes used are typically specified in the supplier's instructions for the UV-VIS spectrometer. Based on the 1 cm path length, the liquid detergent preferably has an average transmittance of at least 20% in the wavelength range of 400 nm to 700 nm. More preferably, the transmittance is at least 30%, even more preferably at least 50%, and still even more preferably at least 70%. Obviously, since the liquid is colored, the average transmittance at visible wavelengths is less than 100%, and preferably at most 90%, and even more preferably at most 80%.

[0011] Preferably, the laundry detergent bottle is a type of liquid detergent in which at least a portion of the light in the 400 nm to 700 nm range can pass through one or more optical paths filled with (i.e., bottle body + detergent).

[0012] In the context of this invention, the term "liquid" means that the continuous phase or main component of the detergent is liquid, and the composition is flowable at 15 degrees Celsius or higher. The viscosity of the detergent is at 25 degrees Celsius and 21 seconds. -1The shear rate is preferably from 200 to about 10,000 mPa·s. This shear rate is the shear rate normally applied to the liquid when it is poured from the bottle. The pourable liquid detergent preferably has a viscosity of 200 to 1,500 mPa·s, more preferably 200 to 700 mPa·s.

[0013] Preferably, the liquid detergent of the present invention is water-based, meaning it contains 10% by weight of water. Preferably, the composition contains at least 40% by weight, more preferably 50% by weight, even more preferably 60% by weight of water, and even more preferably at least 70% by weight of water.

[0014] In the context of this invention, the term "laundry detergent" refers to a detergent intended for and capable of wetting and cleaning household clothing (such as clothes, linens and other household textiles), preferably also when diluted in a washing machine to form a washing liquid.

[0015] In cases of doubt, when referring to one of the front, rear, or side walls, one refers to the area of ​​the bottle wall visible from the relevant front, rear, or side perspective view, where the bottle is positioned upright on a horizontal and flat surface. The front wall, rear wall, and two side walls can form a continuous wall extending upwards from the bottom wall of the bottle to the top opening, but this still provides a wall area as the outer surface of the front, rear, and side walls. In other words, "front wall" refers to the portion of the bottle wall visible from the front view. If any further doubts remain, it is advantageous that perspective implies orthographic projection. Further simplifying, a laundry detergent bottle can be placed upright on its base on a horizontal, flat surface, where the horizontal, flat surface represents the x, y plane, and the top of the bottle lies in the positive z-direction of a Cartesian three-dimensional coordinate system (x, y, z). The bottle is then positioned such that the front and rear walls face along the x-axis (in opposite directions); and each side wall faces along the y-axis (in opposite directions). In this scenario, the front and rear walls are the wall regions visible from orthogonal projections along the x-axis (viewing directions in the +x or -x direction). Similarly, the side walls are the wall regions visible from orthogonal projections along the y-axis (viewing directions in the +y or -y direction). These wall regions visible from these perspectives can partially overlap, thus a portion of the bottle wall can be a combination of the front and side wall regions. SUMMARY Figure 1 This is a front view of a laundry detergent bottle according to an embodiment of the present invention, showing the front viewing wall. Dashed lines indicate the preferred size and shape of the label.

[0017] Figure 2 This is a rear view of a laundry detergent bottle according to an embodiment of the present invention, showing the rear viewing wall. Dashed lines indicate the preferred size and shape of the label.

[0018] Figure 3 This is a side view of a laundry detergent bottle according to an embodiment of the present invention, showing one of the side walls.

[0019] Figure 4 This is another side view of a laundry detergent bottle according to an embodiment of the present invention, showing the other side view.

[0020] Figure 5 This is a top view of a laundry detergent bottle according to an embodiment of the present invention.

[0021] Figure 6 This is a bottom view of a laundry detergent bottle according to an embodiment of the present invention.

[0022] Laundry detergent bottle The bottle body is made of a transparent plastic material and, based on the total weight of the plastic, includes at least 70% by weight polyethylene terephthalate (PET), preferably at least 80% by weight, more preferably at least 90% by weight, and even more preferably substantially composed of PET plastic, as based on the total amount of plastic. These levels refer to the plastic of the bottle body itself and do not include any plastic that may be present in the label placed on the outside of the bottle body.

[0023] The plastic of the bottle body preferably contains at least 20% by weight, more preferably 30% by weight, even more preferably at least 50% by weight, even more preferably at least 70% by weight, and even more preferably at least 95% by weight of recycled PET plastic. Again, these levels refer to the plastic of the bottle body itself and do not include any plastic that may be present in the label placed on the outside of the bottle body.

[0024] The present invention is considered advantageously applicable to liquid detergents contained in transparent plastic-based bottles, wherein the plastic comprises recycled PET, particularly recycled PET. Recycled plastics, particularly recycled PET, are believed to increase the negative impact of sunlight exposure on the color stability of the contained liquid detergent.

[0025] The percentage by weight of recycled plastic can be determined by measuring the tensile strength of the plastic. Alternatively, recycled plastic can be distinguished from virgin plastic in various ways because recycled plastic typically has polymers with reduced molecular weight and is characterized by the presence of impurities (see Rahimi et al., “Chemical recycling of waste plastics for new materials production”, Nature Reviews Chemistry, Vol. 1, No. 0046, 2017).

[0026] Advantageously, based on the total weight of the container plastic, the container plastic contains 0.01 to 6% by weight, more preferably 0.1 to 5% by weight, and even more preferably 1 to 4.5% by weight of a UV absorber. The UV absorber is present in the plastic as an additive. Advantageous UV absorbers are one or more of benzophenones, salicylates, benzotriazoles, hindered amines, and alkoxy (such as methoxy) cinnamic esters. Particularly preferred are cyanoacrylate UV absorbers, preferably at a level of 0.05 to 0.2% by weight based on the total weight of the container plastic. Preferred cyanoacrylate UV absorbers include / are diphenyl acrylates, more preferably alkyl-2-cyano-3,3-diphenyl acrylates, wherein the alkyl group is a branched or straight-chain saturated alkyl group with a molecular weight of less than 120, even more preferably pentaerythritol tetra(2-cyano-3,3-diphenyl acrylate), 1,3-bis-((2'-cyano-3',3'-diphenylacryloyl)oxy)-2,2-bis-(((2'-cyano-3',3'-diphenylacryloyl)oxy)methyl)-propane, ethyl-2-cyano-3,3-dipropyl acrylate, ethyl 2-cyano-3,3-diphenyl-2-acrylate, 2-ethylhexyl-2-cyano-3,3-diphenyl acrylate, or mixtures thereof. Cyanoacrylate UV absorbers are available from BASF (Uvinul), Deltachem (QingDao) (Ominstab), MPI Chemie (UV), and Shipro Kasei Kaisha (Seesorb).

[0027] It is believed that cyanoacrylate UV blockers are particularly effective for bottles containing PET, especially recycled PET, according to the present invention.

[0028] The laundry detergent bottle is suitably rigid so that it is shape-stable when placed upright on a flat surface. The bottle has a preferred internal volume of 300 to 3500 ml, more preferably 500 to 3000 ml, even more preferably 600 to 2800 ml, and even more preferably 650 ml to 2600 ml.

[0029] The laundry detergent bottles of the present invention, particularly those with a filling volume greater than 1.5 L, preferably have one or more additional grooves and / or ridges (and preferably completely surrounded thereby) in the smooth plane (1) and / or (5) to improve the operation of the bottle.

[0030] Advantageous bottles have a pouring neck with a resealable screw top, wherein the maximum dimension of the pouring neck is at least three times smaller than the maximum dimension of the container. The bottle shape is primarily free of sharp edges and corners, unlike a cuboid box. Bottles are also typically characterized by the fact that, when upright on a flat horizontal surface, their height exceeds both their width and depth.

[0031] Advantageously, the horizontal cross-section at half the height of the bottle in an upright position is elliptical, such that the maximum distance between the rear and front walls is less than the maximum distance between the side walls. Preferably, the ratio of the maximum distance between the front and rear walls to the maximum distance between the side walls is 0.2 to 0.9, more preferably 0.3 to 0.8, and even more preferably 0.4 to 0.7. The front viewing wall area is preferably larger than either side viewing wall area. The rear viewing wall area is preferably larger than either side viewing wall area.

[0032] The bottle body advantageously includes sidewalls with a curved shape extending from the top to the bottom. This can be, for example, in... Figure 1 It was observed that, Figure 1 This is a front view of the bottle, where the sides are indeed curved. In this case, the contact area between the bottles can be quite small when they are aligned side by side. In this case, the bottle sidewalls include smooth reinforcing patches (…). Figure 3 6; Figure 4 (7) These smooth areas are located where two bottles can contact each other when placed upright on a horizontal, flat surface. These smooth areas have 1% to 15% of the total side-view surface area. They help stabilize the upright position and reduce shear damage between bottles during transport and packaging. Reinforcing patches are preferably patches that provide a larger bottle-to-bottle contact area and / or patches with a greater wall thickness. Similar smooth areas may also be present on the front and rear walls.

[0033] Advantageously, when in an upright position, the surface area of ​​the horizontal cross-section of the bottle is smaller at the bottom and top, and has a maximum value at 20% to 80% of the vertical distance from the bottom to the top of the bottle.

[0034] The surface area covered by one or more labels (8, 9) is up to 70%, preferably up to 65%, even more preferably up to 60%, and even more preferably up to 55%, based on the total outer surface area of ​​the front wall, back wall and two side walls of the bottle.

[0035] Grooves and / or ridges The bottle includes one or more grooves and / or ridges (1), which define one or more smooth planes (2, 5) on the front and rear viewing walls of the bottle by means of arrangement around the one or more smooth planes. This means that the smooth planes are “surrounded” or “encircled” by the one or more grooves and / or ridges. The surrounding need not be continuous, but sufficient to give the smooth planes a generally defined continuous shape. For example, a continuous line can define a circle, but a dashed line can also define a circle. The continuous smooth planes are preferably generally elliptical or generally teardrop-shaped in shape (2, 5).

[0036] One or more grooves and / or ridges (1) surround a continuous smooth surface on at least the front viewing wall (2), wherein the surface area of ​​the smooth front surface (2) is at least 50% of the total front viewing wall surface area of ​​the bottle. Importantly, the smooth area (2) is covered by one or more labels, preferably one label. At least 70% of the total smooth surface area on the front viewing wall (2) surrounded by one or more grooves and / or ridges (1) is covered by labels. This coverage is preferably at least 75%, more preferably at least 80%, even more preferably at least 90%, and even more preferably at least 95%. A higher label coverage value on the smooth surface of the front wall provides improved color stability.

[0037] Part of the invention lies in providing one or more grooves and / or ridges (1) on those portions not covered by a label present on at least the smooth planes (2, 5), thereby significantly reducing solar-induced instability. In other words, a label positioned on the frontal wall on the smooth plane (2) provides greater protection against solar effects than would be expected based on the area covered by the label.

[0038] Advantageously, at least 75% of the front wall area is covered by one or more grooves and / or ridges (1) and labels (8) on a continuous smooth front surface (2), the amount of which is preferably at least 80%, more preferably at least 85%, even more preferably at least 90%, and even more preferably at least 95%.

[0039] The smooth surface (2) preferably covers 55% to 80% of the total frontal wall area, more preferably 57% to 75%, and even more preferably 60% to 70%.

[0040] The smooth surface (2) includes a label (8), wherein the label preferably covers at least 55% of the total area of ​​the smooth surface of the front wall, more preferably (in ascending order of preference) at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 95%.

[0041] One or more grooves and / or ridges (1) preferably cover at least 40%, 50%, 60%, 70%, 80% and even more preferably at least 90% of the area of ​​the front wall not covered by the smooth surface (2) in an increasing priority order.

[0042] Preferably, the grooves and / or ridges (1) are continuous, and therefore preferably span across the front, rear, and side walls of the bottle. Figures 1-4The number of discontinuous grooves and / or ridges extending over the entire outer surface area of ​​the bottle is preferably up to 20, more preferably up to 15, even more preferably up to 10, and even more preferably up to 5, 4, 3, 2, or 1. In the case of, for example, a continuous groove, the groove can extend continuously along the front wall, across one of the side walls, and the rear wall to the remaining side walls without interruption. Bottle configurations with fewer discontinuous grooves and / or ridges are preferred to simplify the manufacturing process and reduce the number of potential stress points in the bottle that could compromise its integrity during storage and transportation.

[0043] Advantageously, one or more grooves and / or ridges (1) are also present on one or both of the sidewall areas. These advantageously further reduce the negative impact of sunlight falling on the sidewalls of the bottle. Furthermore, these one or more sidewall grooves and / or ridges (1) advantageously extend primarily in the vertical direction (e.g., Figure 3 and Figure 4 As shown), these grooves and / or ridges on the sidewalls can also serve as reinforcing ridges to better withstand vertical forces. Such vertical forces can be significant when boxes of laundry detergent bottles are stacked. Therefore, grooves and / or ridges (1) that point primarily vertically on the sidewalls can save on the amount of plastic required to manufacture laundry detergent bottles.

[0044] Advantageously, at least one of the grooves and / or ridges extends from the front wall across one of the side walls onto the rear wall and is wide enough to provide a gripping portion (10). This gripping portion is advantageously located at the neck portion of the bottle, preferably at least 70%, more preferably at least 75%, and even more preferably at least 85% of the total bottle height, as from one side wall ( Figure 3 As you can see, this groove / ridge helps to grip the neck firmly when opening / closing the bottle. To further enhance ergonomics, as you can see, this groove / ridge tapers downwards from the side wall as it continues along the front and rear walls.

[0045] The width of one or more grooves and / or ridges (1) is advantageously such that, along at least 75% of the total length of one or more grooves and / or ridges, the width is 2 mm to 4 cm, more preferably 3 mm to 3 cm, and even more preferably 4 mm to 2.5 cm.

[0046] The depth of one or more grooves and / or ridges (1) is advantageously such that at least 75% of the total length of one or more grooves and / or ridges, the depth is 0.1 mm to 10 mm, more preferably 0.5 mm to 7 mm, and even more preferably 1 mm to 5 mm.

[0047] When in an upright position on a flat horizontal surface, the length of at least one groove and / or ridge is advantageously at least 20% of the total height of the bottle, more preferably (in ascending order of preference), at least 50%, 80%, 120%, 160%, 200%, 220%, 240%, 260%, 280%, 300%, and even more preferably at least 400%. This length preference advantageously applies to grooves and / or ridges of at least 30%, more preferably at least 50%, more preferably at least 70%, even more preferably at least 80%, and even more preferably at least 90%.

[0048] With regard to the total length of one or more grooves and / or ridges, in an increasing priority order, preferably it is at least 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, or 5.0 times the total height of the bottle.

[0049] The bottle includes one or more grooves and / or ridges (1), but grooves are preferred. Therefore, of the grooves and / or ridges, preferably at least 60%, more preferably at least 75%, even more preferably at least 85%, and even more preferably at least 90%, and even more preferably substantially all of them are grooves. The grooves project toward the interior of the bottle, and the ridges project toward the exterior of the bottle. Preferably, the grooves and / or ridges are smooth.

[0050] The grooves and / or ridges (1) surround a continuous smooth plane on at least the front viewing wall (2) (and preferably the rear viewing wall (5)). In case of doubt, "surround" means that the surface edge of the smooth plane of the front wall is defined and / or defined primarily by the surrounding grooves and / or ridges (1). These surrounding grooves and / or ridges may be continuous or discontinuous, but preferably at least 70%, more preferably at least 80%, even more preferably at least 90%, even more preferably at least 95%, and even more preferably 100% are continuous at the boundaries of the smooth plane.

[0051] The preferred features of the forward viewing wall are applied to the rear viewing wall with appropriate modifications. Therefore, the forward viewing wall ( Figure 1 ) and rearview wall ( Figure 2 Preferably, they are substantially similar, and more preferably, they are substantially similar (e.g., mirror images).

[0052] Therefore, preferably, one or more grooves and / or ridges surround a continuous smooth plane (5) on the rear view wall. Thus, the preferred area indicated by the front view wall being covered by one or more grooves and / or ridges, a continuous smooth plane (2) and a label (8) is also preferred on the rear view wall.

[0053] Advantageously, grooves and / or ridges (1) are present on the front wall, rear wall, and two side walls, wherein they extend primarily in a "top-to-bottom" direction. This is intended to control the pouring rate of liquid from the orifice, particularly those liquids with a viscosity of 200 cP to 1000 cP. In other words, when the bottle is in an upright position on a flat horizontal surface, the total vertical distance traveled by the grooves and / or ridges exceeds the total horizontal distance traveled by the grooves and / or ridges. More advantageously, the vertical distance traveled by the grooves and / or ridges (1) relative to the horizontal distance traveled is in an increasing order of preference as at least 1.2, at least 1.4, at least 1.6, at least 1.8, at least 2.0, at least 2.2, at least 2.4, and at least 3.0.

[0054] Label The label (8) on the continuous smooth plane (2) of the front viewing wall can contain product information. The label is advantageously at least partially opaque to visible light to improve the readability of any information on it. The label can be applied as a self-adhesive or in any other suitable manner. It should be remembered that the label itself can contain transparent portions. This improves the visibility of the liquid in the bottle and provides more complex depictions while still maintaining a simple overall label outer edge. A simple overall label outer edge reduces the number of label placement errors in the factory production line and also improves surface contact with the bottle body when the shape of the non-transparent label portion is more complex. Preferably, 5 to 60%, more preferably 10 to 50%, even more preferably 15 to 45%, and even more preferably 20 to 40% of the total label surface area (8) on the front smooth plane (2) is transparent.

[0055] When labels are partially applied, excellent sunlight protection against fading can be due to the label material itself, even if these may be partially transparent. Therefore, preferably, the label adhesive used is an acrylic-based adhesive. Preferably, the label is a polypropylene film with a print-receiving coating. The label material preferably has a content of 20 to 200 g / m³. 2 The base weight.

[0056] By making the primary color of the label more closely match the color of the liquid, it is believed that the superior protection provided by the labels (8, 9) is further enhanced. Therefore, the color of the label (8) applied at least to the continuous smooth plane (2) of the front viewing wall, and also preferably optionally applied to the preferred continuous smooth plane (5) of the rear viewing wall, has a label surface area colored with a color that deviates from the color of the liquid detergent by at most 50 degrees, preferably at most 40 degrees, more preferably at most 35 degrees, even more preferably at most 30 degrees, and even more preferably at most 20 degrees, when at least 50% of the color of the liquid detergent is as shown on the color wheel. The color wheel is typically depicted with the red side facing up (Wikipedia, "color wheel"). The color of the laundry detergent liquid is preferably not green, more preferably turquoise, pink, blue, or purple.

[0057] To simplify manufacturing and provide the greatest benefit of the invention, advantageously, at least 70%, more preferably at least 80%, even more preferably at least 90%, and even more preferably substantially all of the outer surface of the bottle covered by one or more labels (8, 9) is limited to one or more smooth, continuous planes (2, 5). This applies to smooth, continuous planes on the front (2) and / or rear (5) walls surrounded by one or more grooves and / or ridges (1).

[0058] It is believed that placing the label (8) on a continuous smooth plane (2), where both the smooth plane and the label cover the vertical and horizontal center points of the front wall, as based on the front perspective view of the bottle, further contributes to improved color stability. This is because the PET bottle manufacturing process typically involves some degree of blow molding, which tends to provide the thinnest plastic on the front, rear, and / or side walls, in the middle between the base and top. This is even more critical for the front and rear walls, as these are stretched further in width than the side walls (and thus have a larger surface area). Therefore, placing the label on the vertical and horizontal center points of the front wall provides additional protection compared to placing the label on any other outer surface wall point on the front wall of the bottle. The same applies to placing an additional label (9) on the vertical and horizontal center points of the rear wall.

[0059] Liquid laundry detergent Surfactant The liquid detergent of the present invention preferably contains 2 to 60% by weight, more preferably 3 to 50% by weight, and even more preferably 4 to 30% by weight of a surfactant. Preferably, more than 95% of the surfactant is selected from anionic and nonionic surfactants and mixtures thereof. The weight of anionic surfactants refers to their protonated form.

[0060] Typically, the nonionic and anionic surfactants used in surfactant systems can be selected from those described in Schwartz & Perry's "Surface Active Agents," Volume 1, Interscience 1949; Schwartz, Perry & Berch, Volume 2, Interscience 1958; the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing Confectioners Company; or "Tenside-Taschenbuch," H. Stache, 2nd edition, Carl Hauser Verlag, 1981. Preferably, the surfactant used is saturated.

[0061] Anionic surfactants are discussed in *Anionic Surfactants: Organic Chemistry* (Marcel Dekker 1995), edited by Helmut W. Stache, part of the Surfactant Science series published by CRC Press. Preferred anionic surfactants are sulfonate and sulfate surfactants, with alkylbenzene sulfonates, alkyl sulfates, and alkyl ether sulfates being more preferred. The preferred alkyl groups for alkyl sulfates and alkyl ether sulfates are selected from straight-chain or branched C12-C18 saturated alkyl chains and monounsaturated C18 chains.

[0062] In liquid compositions, C12-C14 alkyl ether sulfates having a straight-chain or branched alkyl group containing 12 to 14 carbon atoms (C12-14) and an average of 1 to 3 EO units per molecule are preferred. A preferred example is sodium lauryl ether sulfate (SLES), wherein the predominantly C12 lauryl alkyl group is ethoxylated with an average of 3 EO units per molecule.

[0063] LAS (linear alkylbenzene sulfonate) is a preferred anionic surfactant.

[0064] The key intermediate compounds in LAS manufacturing are the relevant chain olefins. These chain olefins (olefins) can be produced by any of the methods described above and can be formed from primary sugars, biomass, waste plastics, MSW, carbon capture, methane capture, marine carbon, etc. In the methods described above, the olefins are alternatively processed by hydroformylation and oxidation to form straight-chain alcohols, the olefins react with benzene, and then with sulfonic acids to form LAS. A straight-chain alkylbenzene sulfonate has an alkyl chain length of 10 to 18 carbon atoms. Commercial LAS is a mixture of closely related isomers and homologues of alkyl chains, each containing an aromatic ring sulfonated in the "para" position and attached to the straight-chain alkyl chain at any position except the terminal carbon. The straight-chain alkyl chain preferably has a chain length of 11 to 15 carbon atoms, with the main material having a chain length of about C12. Each alkyl chain homologue consists of a mixture of all possible sulfophenyl isomers except for the 1-phenyl isomer. LAS is typically formulated into the composition as an acid (i.e., HLAS) and then at least partially neutralized in situ. Preferably, the linear alkylbenzene sulfonate surfactant is present in 1 to 20% by weight of the composition, more preferably 2 to 15% by weight, and most preferably 8 to 12% by weight.

[0065] Anionic surfactants are preferably added to detergent compositions in the form of salts. Preferred cations are alkali metal ions, such as sodium and potassium. However, the salt form of anionic surfactants can be formed in situ by neutralizing the acidic form of the surfactant with a base (such as sodium hydroxide) or an amine (such as monoethanolamine, diethanolamine, or triethanolamine). Calculate the weight ratio of the protonated form of the surfactant. In both anionic and nonionic surfactants, the ethoxy unit can be partially replaced by the propoxy unit.

[0066] Further examples of suitable anionic surfactants are rhamnolipids, α-olefin sulfonates, olefin sulfonates, chain olefin sulfonates, alkane-2,3-dimethylbis(sulfates), hydroxyalkane sulfonates and disulfonates, fatty alcohol sulfates (FAS), chain alkane sulfonates, ester sulfonates, sulfonated fatty acid glycerides, methyl ester sulfonates, alkyl- or alkenyl succinic acid, dodecenyl / tetradecenyl succinic acid (DTSA), fatty acid derivatives of amino acids, DATEMs, CITREMs, and diesters and monoesters of sulfosuccinic acid.

[0067] Preferably, the weight fraction of nonionic surfactant to total anionic surfactant is 0.1 to 9, more preferably 0.15 to 2, and most preferably 0.2 to 1. Total anionic surfactant refers to the total content of any type of anionic surfactant.

[0068] Nonionic surfactants are discussed in the Surfactant Science Series, Non-ionic Surfactants: Organic Chemistry, edited by Nico M. Van Os, published by CRC Press (Marcel Dekker 1998). Preferred nonionic surfactants are alkoxylated, preferably ethoxylated. Preferred nonionic surfactants are alcohol ethoxylated and methyl ester ethoxylated compounds having C10-C18 alkyl chains. Commonly used in laundry detergent compositions are C12-C18 saturated and monounsaturated alcohol ethoxylated compounds containing an average of 5 to 12 EO units per molecule with straight or branched alkyl groups. Preferred examples are selected from saturated straight-chain C12, C14, or C16 chains and branched or straight-chain saturated C15 alcohol ethoxylated compounds having a molar average of 7 to 9 ethoxylated units. Preferred methyl ester ethoxylated compounds contain C16, C18, and C18:1 and have a molar average of 8 to 12 ethoxylated groups. More preferably, the methyl ester comprises 20 to 50% by weight of C16 MEE and 20 to 50% by weight of C18:1 MEE. C18:1 is preferably the oleic acid moiety, and C16 and C18 are saturated.

[0069] Typically, ethoxylation reactions that form alcohol ethoxylates are catalyzed by bases such as NaOH, KOH, or NaOCH3. This reaction produces an ethoxylation chain length distribution in the alcohol ethoxylate. Narrow-range ethoxylation provides a narrower ethoxylation chain length distribution than that achieved with NaOH, KOH, or NaOCH3. Narrow-range ethoxylation is achieved using narrow-range ethoxylation catalysts. Narrow-range ethoxylation catalysts are described in EP 3289790 (Procter & Gamble), EP1747183 (Hacros); Santacesatia et al., Ind. Ind. Eng. Chem. Res. 1992, 31, 2419-2421; US4239917 (Conoco); Li et al., ACS Omega. 2021 Nov 9; 6(44): 29774-29780; Hreczuch et al., J. Am. Oil Chem. Soc. 1996, 73, 73-78 and WO2022 / 129374 (Unilever). Ethoxylation reactions are described in Non-Ionic Surfactant OrganicChemistry (edited by NM Van Os), Surfactant Science Series, Vol. 72, CRC Press.

[0070] In anionic and nonionic surfactants, the ethoxy unit can be partially replaced by the propoxy unit.

[0071] Liquid detergents preferably contain 1 to 5% by weight of ethanol.

[0072] Dye The application of this invention is particularly advantageous for providing liquid dye-colored detergents with improved color stability. The dyes of this invention preferably have a maximum extinction coefficient greater than 5000 L / mol / cm, preferably greater than 10000 L / mol / cm, in the range of 400 to 700 nm. Dyes containing a chromophore selected from azathenaes, anthraquinones, monoazo dyes, or triphenylmethanes, most preferably anthraquinones, are preferred. The dyes are described in Industrial Dyes, edited by K. Hunger, 2003 Wiley-VCH ISBN 3-527-30426-6. The dyes used in this invention are selected from cationic dyes, anionic dyes, and nonionic dyes, and are preferably selected from anionic dyes and nonionic dyes. Anionic dyes carry a negative charge in an aqueous medium at pH 7. Examples of anionic dyes can be found in the acid and direct dye categories in the Color Index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists). Anionic dyes preferably contain at least one sulfonic acid or carboxylic acid group. Nonionic dyes are uncharged in aqueous media at pH 7, as exemplified by the disperse dyes in ColorIndex.

[0073] The dye can be any color, but preferred dyes are blue, purple, green, or red. Most preferably, the dye is blue or purple. The dye can be alkoxylated, as described below. Examples of polyoxyalkylene chains include ethylene oxide, propylene oxide, glycidyl oxide, butane oxide, and mixtures thereof.

[0074] The dye is preferably present in the liquid detergent at a certain level to provide an optical density of 0.05 to 2, most preferably 0.4 to 0.8, as measured by a 1 cm optical path length and at the point of maximum absorption of the dye. This is typically provided by a dye level of 0.001 to 2% by weight of the liquid detergent, more preferably 0.005 to 0.1% by weight.

[0075] Anthraquinone dye Preferably, the detergent contains anthraquinone dyes according to the following structure: The anthraquinone chromophore contains an amino or amide group at the 1-position, the 4-position, or both the 1-position and the 4-position; and preferably, the chromophore contains at least one [alkoxy] group. n Partial groups; at least one of which contains an [alkoxy] group.n Some of the groups can be covalently bonded at any numbered position, either directly or via an amine or amide group; and at least one of them contains an [alkoxy group]. n The n of some of the groups is 2 to 20. More preferably, the anthraquinone dyes of the present invention have amino or amide groups at both the 1- and 4- positions.

[0076] Anthraquinone dyes can have more than one [alkoxy group]. n The anthraquinone dye of this invention contains [alkoxy] groups. n The number of groups can suitably be 1 to 8, but preferably 1 to 4, more preferably 1, 2, or 3, and even more preferably 2. Preferably, the total number of alkoxy monomers in the anthraquinone dye is 2 to 40, more preferably 3 to 30, and even more preferably 4 to 20.

[0077] Advantageously, at least one contains [alkoxy group]. n The groups are directly or covalently linked at any one of the 1 to 4 positions of the anthraquinone dye of the present invention, either directly or through the N-atom of an amine or an acid group. Anthraquinone dyes having the following structures are advantageous: Wherein R2, R3, X, and Y are H or organic groups, and at least one of the groups R2, R3, X, and Y contains -[CH2CH2O]. n R1 group, wherein ·n is between 2 and 20; and R1 is an organic group or H, preferably CH3 or H, and more preferably H; and • Preferably, X and Y represent the same group, and more preferably H; and • Preferably, R2 and R3 are -CH2CH2CH2O(CH2CH2O)2R1, and more preferably, R1 is -H.

[0078] Alkoxylated dyes are preferred. Alkoxylated dyes contain at least one polyalkoxy-containing group covalently bonded to the chromophore. The polyalkoxy-containing group can be directly bonded to the aromatic ring of the chromophore, or more often indirectly, such as through the nitrogen atom of an amine or amide group. The polyalkoxy group may contain a linker portion and have the following structure: -linker-(alkoxy) n Alkoxy monomers preferably have 2 to 4 carbon atoms and can form mixed polyalkoxylated compounds, such as polyalkoxylated compounds containing both ethoxylated, propoxylated, and butoxylated monomers. Dyes having the same type of alkoxy monomers are preferred. Dyes having ethoxylated monomers are preferred. Alkoxylated dyes are described in WO2022056205 (Milliken).

[0079] Blue dyes are preferably selected from: and and their ethoxylated equivalents with different degrees of ethoxylation, wherein preferably each ethoxy chain has a molar average of 2 to 15 ethoxy units.

[0080] Further preferred blue dyes are selected from: Wherein R2, R3, X, and Y are H or organic groups, and at least one of the groups R2, R3, X, and Y contains -[CH2CH2O]. n H group. Preferred examples are 1-amino-2-polyvinyloxy-4-phenylamino-anthraquinone, 1-amino-2-methoxy-4-[-4-polyvinyloxy-aniline]anthraquinone, 1-amino-2-polyvinyloxy-4-(2,4,6-trimethylphenylamino)anthraquinone, and N,N'-dialkyloxy-substituted 1,4-diaminoanthraquinone. More preferably, it is N,N'-dialkyloxy-substituted 1,4-diaminoanthraquinone. Most preferably, X=Y=H and R2 and R3 are -CH2CH2CH2O(CH2CH2O)2R1, as described in Examples 1 and 2 of US7632682.

[0081] Green dyes are preferably selected from: ; and their ethoxylated equivalents with different degrees of ethoxylation, wherein preferably each ethoxy chain has a molar average of 2 to 15 ethoxy units.

[0082] The preferred red dye is selected from: ; ; and their ethoxylated equivalents with different degrees of ethoxylation, wherein preferably each ethoxy chain has a molar average of 2 to 15 ethoxy units.

[0083] Yellow dyes are preferably selected from: ; ; and their ethoxylated equivalents with different degrees of ethoxylation, wherein preferably each ethoxy chain has a molar average of 2 to 15 ethoxy units.

[0084] Purple dyes are preferably selected from: ; ; and their ethoxylated equivalents with different degrees of ethoxylation, wherein preferably each ethoxy chain has a molar average of 2 to 15 ethoxy units.

[0085] In -[ethoxy] n In this context, 'n' typically refers to the average number of alkoxy monomers, where 'n' can therefore represent the average value of the distribution. In this case, it is advantageous if the most prevalent molecular species have a number of '-[ethoxy] groups corresponding to the distribution average 'n'. n Partial distributions. Further preferred are those distributions in which the molecular species having a higher molar percentage corresponding to the average degree of alkoxylation “n” are present. For example, if “n” is 4, then distributions of 25% n=2, 50% n=4, and 25% n=6 are more preferred than distributions of 30% n=2, 40% n=4, and 30% n=6. This advantageously applies to the average number of alkoxy monomers in the alkoxylated dye as a whole and / or the average number of alkoxy monomers in individual polyalkoxy-containing groups.

[0086] Leuco dyes as described in EP 3 535 369 (Millken) can be used, but are not preferred.

[0087] Shading dye During the washing or rinsing step of the washing process, tinting dyes are deposited onto the fabric, thereby providing the fabric with a visible hue. In this respect, the dyes impart blue or purple to white fabric with a hue angle of 240 to 345, more preferably 260 to 320, and most preferably 270 to 300. The white fabric used in this test is bleached, non-mercerized woven cotton sheet.

[0088] The chromophores of the tinting dyes are most preferably selected from monoazo, diazo, anthraquinone, and azazine. In one embodiment, a mixture of tinting dyes may be used. Preferably, at least two, at least three, or at least four tinting dyes are used in combination.

[0089] Preferably, the tinting dye is a monoazo dye. The monoazo dye preferably contains a heterocycle, and most preferably is a thiophene dye. The monoazo dye is preferably alkoxylated, and preferably uncharged or anionic at pH=7. Alkoxylated thiophene dyes are discussed in WO2013 / 142495 and WO2008 / 087497. More preferably, the monoazo thiophene dye has the following structure: Another advantage is the availability of diazo color-correcting dyes. Preferred diazo dyes are sulfonate diazo dyes. The preferred diazo color-correcting dyes have the following structure: or in: Rings D and E can be independently naphthyl or phenyl as shown; R 1 Selected from: hydrogen and C1-C4 alkyl groups, preferably hydrogen; R 2 Selected from: hydrogen, C1-C4 alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl, preferably phenyl; R 3 and R 4 Independently selected from: hydrogen and C1-C4 alkyl groups, preferably hydrogen or methyl; X and Y are independently selected from: hydrogen, C1-C4 alkyl and C1-C4 alkoxy; preferably, the dye has X=methyl; and Y=methoxy and n is 0, 1 or 2, preferably 1 or 2.

[0090] Preferred examples of sulfonated diazo compounds are Direct Violet 7, Direct Violet 9, Direct Violet 11, Direct Violet 26, Direct Violet 31, Direct Violet 35, Direct Violet 40, Direct Violet 41, Direct Violet 51, Direct Violet 66, Direct Violet 99, and their alkoxylated forms. Alkoxylated diazo dyes are discussed in WO2012 / 054058 and WO2010 / 151906. In yet another preferred embodiment, the tinting dye is an azine dye. Azine dyes typically have the following core structure: Where R a R b R c and R d Selected from: H, branched or straight-chain C1 to C7 alkyl chains, benzyl, phenyl, and naphthyl; The dye is affected by at least one SO3 - or -COO - Group substitution; Ring B does not contain negatively charged groups or their salts; Furthermore, ring A can be further substituted to form a naphthyl group; The dye may be optionally substituted with a group selected from amine, methyl, ethyl, hydroxy, methoxy, ethoxy, phenoxy, Cl, Br, I, F and NO2.

[0091] Preferably, the azine dye has the following general structure: in: X3 is selected from: -H; -F; -CH3; -C2H5; -OCH3; and -OC2H5; X4 is selected from: -H; -CH3; -C2H5; -OCH3; and -OC2H5; Y2 is selected from: -OH; -OCH2CH2OH; -CH(OH)CH2OH; -OC(O)CH3; and C(O)OCH3.

[0092] Azazine dyes are preferably selected from sulfonated phenazine dyes and cationic phenazine dyes. Preferred examples are Acid Blue 98, Acid Violet 50, dyes with CAS number 72749-80-5, and Acid Blue 59. Azazine tinting dyes having the following structures are also preferred: For tinting dyes, reactive blue anthraquinone dyes are also preferred. Examples of anthraquinone dyes have the following structures: In a preferred embodiment, the tinting dye is a reactive blue anthraquinone dye covalently linked to alkoxylated polyethyleneimine. Alkoxylation is preferably selected from ethoxylation and propoxylation, with propoxylation being most preferred. Preferably, 80 to 95 mol% of the NH groups in the polyethyleneimine are replaced by isopropanol groups via propoxylation. Preferably, the polyethyleneimine has a molecular weight of 600 to 1800 prior to reaction with the dye and propoxylation. An exemplary structure of a preferred reactive anthraquinone covalently linked to propoxylated polyethyleneimine is as follows: Phosphate Preferably, the detergent composition is phosphate-free, meaning it contains less than 1% by weight of phosphate, more preferably less than 0.5% by weight of phosphate, even more preferably less than 0.1% by weight of phosphate, and even more preferably substantially phosphate-free. Preferably, the detergent composition is phosphonate-free, meaning it contains less than 1% by weight of phosphonate, more preferably less than 0.5% by weight of phosphonate, even more preferably less than 0.1% by weight of phosphonate, and even more preferably substantially phosphonate-free.

[0093] Aminopolycarboxylate builder Liquid laundry detergents preferably contain amino polycarboxylate salts, which are known in the detergent industry and are sometimes referred to as aminocarboxylate chelating agents. They are generally considered strong detergent enhancers. Liquid laundry detergents preferably contain 0.1% to 20% by weight, more preferably 0.2% to 15% by weight, even more preferably 0.4% to 4% by weight, and even more preferably 0.5% to 2.5% by weight of amino polycarboxylate salts.

[0094] Suitable amino polycarboxylic acids include N,N-glutamic acid diacetic acid (GLDA), methylglycine diacetic acid (MGDA), ethylenediaminedisuccinic acid (EDDS), iminodisuccinic acid (IDS), iminodiamalic acid (IDM), ethylenediaminetetraacetic acid (EDTA), hyponitrotriacetic acid (NTA), iminodiacetic acid (IDA), diethylenetriaminepentaacetic acid (DTPA), hydroxyethyliminodiacetic acid (HEIDA), aspartic acid diethoxysuccinic acid (AES), aspartic acid-N,N-diacetic acid (ASDA), hydroxyethylenediaminetetraacetic acid (HEDTA), hydroxyethylethylenediaminetriacetic acid (HEEDTA), iminodiafumaric acid (IDF), iminodiatartaric acid (IDT), iminodiamaleic acid (IDMAL), ethylenediaminedifumaric acid (EDDF), ethylenediaminediamalic acid (EDDM), ethylenediaminediatartaric acid (EDDT), ethylenediaminediamaleic acid (EDDMAL), and pyridine dicarboxylic acid.

[0095] Preferred aminopolycarboxylic acids are N,N-diacetic acid of glutamic acid (GLDA), methylglycine diacetic acid (MGDA), ethylenediamine disuccinic acid (EDDS), iminodisuccinic acid (IDS), iminodiamalic acid (IDM), or mixtures thereof, more preferably GLDA, MGDA, EDDS, or mixtures thereof, even more preferably GLDA and MGDA, or mixtures thereof, and even more preferably MGDA.

[0096] MGDA and GLDA feedstocks may contain significant amounts of MGMA and GLDA, respectively, and their exposure to sunlight has been found to negatively impact the stability of laundry detergents. The molar fraction (ratio) of MGDA to MGMA can be determined by 1H NMR spectroscopy. The sample is dried, preferably by freeze-drying, and then completely dissolved in a deuterated solvent. The deuterated solvent is preferably D2O or a deuterated alcohol, more preferably deuterated D2O. The integral of N-CH2- protons is obtained from the NMR spectrum; in D2O, these are ~3.2 ppm for MGDA and ~3.3 ppm for MGMA. Peak splitting may occur due to the presence of stereoisomers and optical isomers. The molar fraction is given by the following formula: mole fraction = I MGDA / (2 I MGMA ) Where I MGDA It is the integral of the N-CH2-proton of MGDA, and I MGMA It is the integral of the N-CH2-proton of MGMA. MGMA Multiply by 2 to account for the fact that MGMA has 2 N-CH2-protons compared to MGDA's 4. The mole fractions of GLDA and GLMA can be determined in a similar manner.

[0097] The level of MGMA can be controlled by (partial) purification of the MGDA product and / or by driving the MGDA synthesis reaction more completely, preferably the latter. For example, this can be achieved by reacting ammonia, formaldehyde, and hydrogen cyanide at pH 6 to form iminodiacetonitrile, then placing it in a strongly acidic medium (pH 1.5) and reacting it with acetaldehyde to produce trinitrile methylglycinonitrile. N,N MGDA is synthesized from diacetonitrile. Then, alkaline hydrolysis yields trisodium MGDA. An alternative method is to synthesize alanine nitrile using HCN, NH3, and CH3CHO via Stecker, and then convert alanine nitrile to methylglycinate via double cyanomethylation with formaldehyde and hydrogen cyanide. N,N- Diacetonitrile is then hydrolyzed with NaOH to yield MGDA. Increasing the formaldehyde level can drive the reaction to complete more fully, i.e., converting more MGMA to MGDA in the final product. In doing so, additional glycolic acid can be formed in the final product, surprisingly with little or no negative stability effects. The level of MGMA in the sample can also be reduced by preparative chromatography, such as preparative thin-layer chromatography.

[0098] The preferred MGDA / MGMA molar fraction is at least 3.7 (i.e., the number of moles of MGDA is 3.7 times higher than the number of moles of MGMA), preferably 3.8, more preferably 3.9, and even more preferably at least 4.0.

[0099] MGDA and GLDA are commercially available from several companies, including Shijiazhuang Jackchem Co., Ltd., BASF (Trilon product line), and Nouryon (Dissolvine product line). These commercial sources may contain a certain level of MGMA. Allowing a certain level of MGMA / GLMA in the composition is important for reducing manufacturing complexity while still providing good formulation stability. Therefore, it is advantageous that the molar fraction of MGDA / MGMA is at most 100, more preferably at most 50, even more preferably at most 25, even more preferably at most 20, even more preferably at most 15, even more preferably at most 10, more preferably at most 6, even more preferably at most 5, and even more preferably at most 4.5. This also applies to the molar fraction of GLDA / GLMA.

[0100] pH profile Preferably, the pH of the liquid detergent is between 5 and 9.0, more preferably between 6.0 and 8.0. The pH of the liquid detergent is measured at 20 degrees Celsius under other standard conditions. The desired pH value can be set by using appropriate amounts of acid and base. Preferred acids are organic acids. It should be noted that the sodium salt form of aminopolycarboxylic acids is generally alkaline.

[0101] Perfume The liquid detergent of the present invention preferably contains one or more fragrances. The fragrance may be present in the range of 0.1 to 1% by weight. Many suitable examples of fragrances are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide published by CFTA Publications and the OPD 1993 Chemicals Buyers Directory 80th Annual Edition published by Schnell Publishing Co. In the fragrance mixture, preferably 15 to 25% by weight is a top note. Top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80

[1955] ). Preferred top notes are selected from citrus oil, linalool, linalyl acetate, lavender, dihydromyrcenol, rose ether, and cis-3-hexanol.

[0102] Preferably, the fragrance contains substituted benzaldehyde, wherein the substitution is preferably at the 3, 4, or 5 position, and more preferably the substituent is alkoxy. Preferably, the benzaldehyde is selected from 4-methoxybenzaldehyde, 5-methoxybenzaldehyde, 3-methoxybenzaldehyde, 4-ethoxybenzaldehyde, 5-ethoxybenzaldehyde, and 3-ethoxybenzaldehyde. Preferably, the benzaldehyde is present in 0.5 to 5% by weight of the fragrance.

[0103] The preferred fragrance components are selected from tricyclodecenyl acetate; tricyclodecenyl propionate; or tert-butylcyclohexyl acetate; tetrahydrolinalool; borneol acetate; borneol propionate; dihydromyrcenol; hexyl salicylate; tetramethylacetyl octahydronaphthalene; eucalyptol; 2-methylundecaldehyde; citronellol; geraniol; benzyl acetate; (E)-4-methyldec-3-en-5-ol.

[0104] Preferably, the fragrance contains at least six of these components, more preferably each of which is present in the detergent product at a content of at least 0.01 by weight.

[0105] The fragrances based on the tricyclic decenyl group are tricyclic decenyl acetate, tricyclic decenyl propionate, borneol acetate, and borneol propionate. The total weight of tricyclic decenyl acetate, tricyclic decenyl propionate, borneol acetate, and borneol propionate is referred to as the tricyclic decenyl total. Tert-butylcyclohexyl acetate is preferably o-tert-butylcyclohexyl acetate or p-tert-butylcyclohexyl acetate.

[0106] Preferably, the fragrance contains at least four, more preferably at least five, components selected from tricyclodecenyl fragrance; tert-butylcyclohexyl acetate; dihydromyrcenol; tetramethylacetyl octahydronaphthalene; hexyl salicylate; and tetrahydrolinalool.

[0107] Preferably, the weight ratio of total tricyclic decenyl groups: tert-butylcyclohexyl acetate: dihydromyrcenol is selected from 30-40:20-30:10-20 for long-lasting fragrances and from 5-15:20-30:35-50 for fresh fragrances.

[0108] Preferably, the weight ratio of tetramethylacetyl octahydronaphthalene to hexyl salicylate is 5-15:10-16.

[0109] Preferably, the weight fraction of dihydromyrcenol / hexyl salicylate is 0.5 to 6.0, more preferably 1.0 to 3.0.

[0110] Alkoxylated polyamine polymer Detergents advantageously contain alkoxylated polyamine polymers. Preferably, the polyamine is an alkoxylated cationic or zwitterionic di or polyamine polymer, wherein the positive charge is provided by quaternization of the nitrogen atom of the amine, and the anionic group (if present) is provided by sulfation or sulfonation of the alkoxylated group.

[0111] Preferably, the alkoxy compound is selected from propoxy and ethoxy, with ethoxy being the most preferred.

[0112] Preferably, 50 mol% or more of the nitrogen-containing amine is quaternized, more preferably with methyl quaternization. Preferably, the polymer contains 2 to 10, more preferably 2 to 6, and most preferably 3 to 5 quaternized nitrogen-containing amines. Preferably, the alkoxy group is selected from ethoxy and propoxy groups, most preferably ethoxy.

[0113] Preferably, the polymer contains ester (COO) or amide (CONH) groups within its structure, and these groups are preferably positioned such that when all ester or amide groups are hydrolyzed, at least one, preferably all, hydrolyzed fragments have a molecular weight of less than 4000, preferably less than 2000, and most preferably less than 1000.

[0114] The compositions of the present invention preferably contain 0.025 to 8% by weight of one or more anti-redeposition polymers.

[0115] Soil release polymer Stain-removing polymers (SRPs) help improve the removal of dirt from surfaces (such as fabrics or hard surfaces) during washing by modifying the surface. When included, the total content of SRP is preferably 0.1 to 10% by weight, more preferably 0.3 to 7% by weight, and even more preferably 0.5 to 5% by weight. SRPs used in this invention can include various charged (e.g., anionic) and uncharged monomer units, and the structure can be linear, branched, or star-shaped. The weight-average molecular weight (M) of the SRP... w The SRP can suitably range from about 1,000 to about 20,000, and preferably from about 1,500 to about 10,000. The SRP can be a copolyester selected from dicarboxylic acids (e.g., adipic acid, phthalic acid, or terephthalic acid), glycols (e.g., ethylene glycol or propylene glycol), and polyglycols (e.g., polyethylene glycol or polypropylene glycol). Other types of SRP used in this invention include cellulose derivatives.

[0116] Polymeric thickener The detergents of the present invention may contain one or more polymer thickeners. Suitable polymer thickeners used in the present invention include hydrophobically modified alkali-swellable emulsion (HASE) copolymers. Preferred HASE copolymers used in the present invention include linear or crosslinked copolymers, which are formed by (meth)acrylic acid and (i) a polymer selected from linear or branched C8-C... 40 Alkyl (preferably straight-chain C) 12 -C 22 The associating monomer is prepared by addition polymerization of at least one associating monomer of alkyl(meth)acrylate polyethoxylated (meth)acrylate; and (ii) at least one further monomer selected from C1-C4 alkyl(meth)acrylate, polyoxovinyl monomers (such as maleic acid, maleic anhydride and / or salts thereof), and mixtures thereof. The polyethoxylated portion of the associating monomer (i) typically comprises about 5 to about 100, preferably about 10 to about 80, more preferably about 15 to about 60 oxyethylene repeating units. Mixtures of any of the above materials may also be used.

[0117] The liquid detergent of the present invention preferably contains 0.01 to 5% by weight, and more preferably 0.1 to 3% by weight, a polymer thickener.

[0118] Enzyme The detergent compositions of the present invention may contain enzymes. Preferred enzymes are proteases, amylases, cellulases, peroxidases, mannanases, pectic acid lyases, and lipases, and combinations thereof. The enzymes may be added in liquid or encapsulated form. In a preferred embodiment of the invention, the enzymes are present in encapsulated form. Suitable levels for each enzyme are 0.01 to 10 mg, more preferably 0.2 to 5 mg, and even more preferably 0.3 to 2 mg active enzyme / gram of composition. Combinations of at least one protease and at least one amylase are particularly advantageous.

[0119] Further ingredients Particularly advantageous is the inclusion of 1 to 6% by weight, more preferably 2 to 5% by weight, of a water-coating solvent. An advantageous water-coating solvent is sodium xylenesulfonate. The detergent may advantageously include a bleaching system, which advantageously includes 1 to 25% by weight of a bleaching agent, 0.1 to 10% by weight of a bleaching activator, and optionally 0.0001 to 0.5% by weight of a bleaching catalyst.

[0120] Liquid detergents preferably contain amine-based organic solvents. The preferred content is 0.1 to 8% by weight, more preferably 0.5 to 6% by weight, even more preferably 1 to 5% by weight, and even more preferably 1.5 to 4% by weight. The preferred amine-based organic solvent is ethanolamine, and even more preferably triethanolamine. Liquid detergents preferably contain at least 50% by weight, more preferably at least 75% by weight, even more preferably at least 85% by weight, and even more preferably at least 95% by weight of triethanolamine, as per the total amount of the amine-based organic solvent.

[0121] It is believed that the application of the present invention is particularly beneficial to detergent liquids containing amine-based organic solvents, which are believed to be particularly susceptible to the negative effects of sunlight exposure.

[0122] Particularly advantageously, the compositions of the present invention further include an effective amount of preservative, more preferably 0.001 to 0.1% by weight, even more preferably 0.01 to 0.05% by weight. The preferred preservative at this level is 1-2-benzisothiazolin-3-one (BIT), although methylisothiazolinone (MIT) can be used just as well, or combinations thereof.

[0123] Exemplary formulations Therefore, the exemplary laundry detergent composition of the present invention has the following formulation: 1 to 30% by weight of a surfactant mixture comprising anionic and nonionic surfactants; and 0.1 to 15% by weight of a combined amount of methylglycine diacetic acid (MGDA) and methylglycine monoacetic acid (MGMA), wherein the molar ratio of MGDA:MGMA is at least 3.6; and a total amount of 0.00001 to 0.1% by weight of ethoxylated anthraquinone dye and ethoxylated thiophene monoazo dye or a combination thereof; and a hydrophobically modified alkali-soluble acrylic polymer emulsion (HASE); and 0.025 to 8% by weight of alkoxylated polyethyleneimine; and fragrance; and the balance being water; and a net pH of 5 to 9 at 25 degrees Celsius; and packaged in a transparent plastic bottle with a volume of 0.2 to 5 liters.

[0124] Method The bottle body according to the invention can be made using conventional techniques known in the art. PET bottles can be made using conventional techniques such as injection blow molding and injection stretch blow molding. PET bottles are typically produced using a two-step process, in which a preform is prepared by injection molding of molten PET in a preform mold. Subsequently, the preform is given its final shape in a second mold for the final bottle shape. This forming preferably involves heating the preform, using bar stretching, and blow molding material to line the mold of the final bottle shape. General descriptions can be found, for example, in Hans-Georg Elias, “An introduction to plastics,” 1993. These techniques include thermoforming, blow molding, injection molding, or injection stretch blow molding.

[0125] Preferably, the plastic material of the bottle body comprises recycled polyethylene terephthalate (PET) plastic. Based on the total plastic feed material used to manufacture the container, the amount of recycled plastic can be adjusted by weight percentage of the recycled plastic feed material used. PET plastic feed materials (virgin and recycled) are typically supplied in the form of PET pellets. Therefore, the amount of recycled PET plastic in the final bottle body can be precisely determined. Typically, to convert recycled post-use plastic into usable raw materials for manufacturing new plastic products, the plastic is washed, dried, and appropriately granulated. The granulated recycled plastic can then optionally be mixed with virgin granulated plastic and processed to shape it into a new plastic product. If a UV absorber is present, it is preferably added to the (granulated) plastic feed material while it is melted and mixed with the absorber before bottle formation.

[0126] Liquid detergent compositions can be provided using conventional methods known in the art. These methods may include simply combining the ingredients, preferably mixing them to provide a liquid detergent composition.

[0127] It should be understood that the improved storage stability of the detergent product of the present invention allows for flexibility in logistics. It enables energy-efficient centralized large-scale production to be combined with long-distance international large-scale distribution requiring centralized accumulation (and extended storage time). For example, a cargo ship may take 10 to 20 days to cross the Atlantic, not including time spent loading or unloading the vessel in port. Therefore, preferably following the manufacturing process of the laundry detergent bottle of the present invention is a large-scale production process providing 10,000 to 300,000 tons per year, preferably 15,000 to 250,000 tons per year, and even more preferably 20,000 to 200,000 tons per year, and even more preferably 30,000 to 150,000 tons per year.

[0128] Unless otherwise stated, preferred aspects in the context of one aspect of the invention (e.g., a product) are also applicable, with necessary modifications, to preferred aspects in the context of other aspects (e.g., processes and / or containers and / or uses).

[0129] The invention will now be described by way of the following non-limiting embodiments.

[0130] Examples Prepare an aqueous laundry detergent formulation having the formulations listed in Table 1.

[0131] Table 1: Formulation Composition

[0132] A blue dye was added to the formulation to achieve an optical density (1 cm⁻¹) of 0.6 at the maximum absorption (646 nm) in the visible light spectrum. The dye used was ethoxylated 1,4-diaminoanthraquinone. The dye structure is as follows: The formulation was placed in a 1.48 L clear PET (35% PCR) plastic bottle containing a UV blocker (0.07% UVI) and an identical clear bottle with a label covering 59% of the liquid. The label was PP CLEAR TC 50P / RP74 / PET 30. The front of the label was a clear, glossy, biaxially oriented, top-coated polypropylene film. The backing material was a clear polyester backing material. The adhesive used was an acrylic water-based ultra-clear permanent adhesive that did not require UV curing.

[0133] The formulation was at 43 W / m 2 The detergent was exposed to simulated outdoor sunlight for 48 hours in an aging apparatus at 300-400 nm. After exposure, the bottle was shaken and the UV-VIS spectrum (1 cm) of the detergent was measured and compared with the unexposed control.

[0134] The absorption change of blue dye was measured by the following: Δblue = Σ(irradiated) - (control) from 570 to 670 nm Browning / orange coloration of the formulation was measured.

[0135] Δbrown = Σ(irradiated) - (control) from 450 to 500 nm.

[0136] Measure the yellowness of the formulation: Δyellow = Σ(irradiated) - (control) from 400 to 420 nm.

[0137] For all these values, negative values ​​indicate a decrease in color, and positive values ​​indicate an increase in color. The results are shown in Table 2.

[0138] Table 2:

[0139] With and without labels, Δblue and Δyellow decreased by similar amounts. Δbrown increased and surprisingly decreased by a factor of 9 with labels. Increased browning indicates color degradation of the detergent. This reduction in browning cannot be solely due to the masking effect of the label, as covering only 59% of the liquid, compared to a measured 0.1, would give a Δbrown value of 0.59. The expected value is 0.9 = 0.53. Therefore, the reduction in browning can be attributed to the presence of grooves around the flat anterior plane. No effect was observed / a small effect was observed for Δblue and Δyellow.

Claims

1. A transparent laundry detergent bottle suitable for holding 0.2 to 5 L of liquid laundry detergent and containing the liquid laundry detergent, wherein the bottle comprises a bottle body formed of a transparent plastic material and one or more labels, • The plastic material of the bottle comprises at least 70% by weight polyethylene terephthalate (PET) based on the total weight of the plastic; and The liquid laundry detergent mentioned above contains surfactants and dyes; and • The bottle body includes: ◦ Bottom wall (3), which provides a base structure for supporting the bottle in an upright position; ◦ Top opening (4), which is adapted to be closed by a cover; and ◦ One or more sidewalls extending from the bottom wall to the top opening, and ◦ When positioned upright on a horizontal plane, the bottle provides a front viewing wall (Fig. 1), a rear viewing wall (Fig. 2), and two side viewing walls (Fig. 3 and Fig. 4). • Wherein, one or more grooves and / or ridges (1) surround a continuous smooth plane (2) on the front viewing wall of the bottle, wherein the surface area of ​​the smooth front plane (2) is at least 50% of the total front viewing wall surface area of ​​the bottle; and • The continuous smooth plane (2) mentioned above includes a label (8); and • At least 70% of the area of ​​the front wall is covered by one or more grooves and / or ridges (1) on the continuous smooth front plane (2) and the label (8).

2. The transparent laundry detergent bottle containing liquid laundry detergent according to claim 1, wherein the number of grooves and / or ridges (1) is up to 4, preferably up to 3, more preferably up to 2 and even more preferably 1, which are essentially continuous grooves and / or ridges visible on each front, rear and side viewing wall area (Figures 1-4).

3. The transparent laundry detergent bottle containing liquid laundry detergent according to claim 1 or claim 2, wherein the rear wall of the bottle (FIG. 2) further has one or more grooves and / or ridges (1) surrounding a continuous smooth plane (5) on the rear wall of the bottle, wherein the surface area of ​​the continuous smooth rear plane (5) is at least 50% of the total rear wall surface area of ​​the bottle, and wherein the continuous smooth rear plane further includes a label (9).

4. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein at least 85%, preferably at least 90%, and even more preferably at least 95% of the front viewing wall surface area (FIG. 1) and the rear viewing wall surface area (FIG. 2) are covered by the one or more grooves and / or ridges (1) and labels (8, 9).

5. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein at least 50% of the surface area of ​​the front viewing wall label (8) is colored with a dye based on a liquid detergent color wheel as depicted on a color wheel, the dye being at most 50 degrees, preferably at most 40 degrees, more preferably at most 35 degrees, even more preferably at most 30 degrees, and even more preferably at most 20 degrees.

6. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the bottle has an internal volume of 300 ml to 3500 ml, preferably 500 ml to 3000 ml, more preferably 600 ml to 2800 ml, and even more preferably 650 ml to 2600 ml.

7. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the plastic of the bottle body contains at least 20% by weight, more preferably 30% by weight, even more preferably at least 50% by weight, even more preferably at least 70% by weight, and even more preferably at least 95% by weight of recycled polyethylene terephthalate (PET) plastic.

8. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the bottle body does not include perforations in the front viewing wall region, the rear viewing wall region, and the side viewing wall region, and more preferably does not include perforated portions forming a handle.

9. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the bottle is substantially symmetrical in at least one vertical cross-section, except for any threads on the top to accommodate a screw cap or other such small protrusions.

10. A transparent laundry detergent bottle comprising liquid laundry detergent according to any one of the preceding claims, wherein the dye comprises anthraquinone ethoxylated dye, an ethoxylated monoazothiophene dye, or a combination thereof, and even more preferably an anthraquinone ethoxylated dye according to any one of the following structures: 、 、 ， In the aforementioned structure, the degree of ethoxylation specifically indicated represents the average degree of ethoxylation.

11. A transparent laundry detergent bottle comprising liquid laundry detergent according to any one of the preceding claims, wherein the dye comprises an ethoxylated dye according to the following representative structure: ， However, the average degree of ethoxylation is 3 to 10, and preferably 4 to 8.

12. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the liquid is turquoise, pink, blue, or purple in color.

13. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the detergent further comprises 1 to 70% by weight of a surfactant, and preferably further comprises 0.1 to 25% by weight of methylglycine diacetic acid (MGDA).

14. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the detergent contains 0.00005 to 0.02% by weight, preferably 0.0001 to 0.01% by weight, and more preferably 0.001 to 0.005% by weight of dye.

15. A transparent laundry detergent bottle containing liquid laundry detergent according to any of the preceding claims, wherein the detergent further comprises 0.1 to 8% by weight, preferably 0.5 to 6% by weight, more preferably 1 to 5% by weight, and even more preferably 1.5 to 4% by weight of an amine-based organic solvent.

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