CN104736689A

CN104736689A - Non-spherical droplet

Info

Publication number: CN104736689A
Application number: CN201380054375.XA
Authority: CN
Inventors: P·T·斯派瑟; M·卡吉奥尼; J·莱尼斯-阿布日力; A·V·贝尔斯
Original assignee: Procter and Gamble Ltd
Current assignee: Procter and Gamble Ltd; Procter and Gamble Co
Priority date: 2012-10-17
Filing date: 2013-10-17
Publication date: 2015-06-24
Also published as: EP2909298B1; WO2014062867A2; WO2014062867A4; EP2909298A2; WO2014062867A3

Abstract

Non-spherical liquid droplets comprising a liquid, an internal solid material defining the shape of the droplet, a benefit agent, and methods of making non-spherical liquid droplets.

Description

Aspherical droplet

Technical field

The present invention relates to the method for drop and the described drop of preparation comprising internal solids material.

Background technology

Beneficial agent, such as spices, enzyme etc. are usually delivered to substrate with the form of droplet or particle.This type of is sent by using drop to realize, and described drop can be present in another kind of liquid or be present in air, such as aerosol.Another kind method is solid carrier material such as zeolite or starch via loading.In this case, beneficial agent exists usually used as liquid, and described liquid puts on solid support material and is absorbed in solid particulate.Final method is via core-shell particles, and wherein beneficial agent is the component of the liquid core of being surrounded by solid shell.But, when using these known methods, run into multiple problem.

The solid support material loaded meets with two problems.First problem is the ability being attached to substrate.Attachment usually depends on magnetism, as the charge attraction power between solid carrier material and substrate.If surface has the electric charge identical with solid support material outside surface, then attachment is impossible.The second, even if it should be successful for being attached to substrate, it also may be problematic that beneficial agent moves to substrate from solid support material.This is because solid material is attached in substrate, therefore absorbs liquid in solid support material and may not easily shift, because it does not directly contact with substrate.

Drop overcomes some shortcomings in the solid support material of loading.First, because it is liquid, so they can be attached in substrate do not need the requirement identical with solid particulate, as charge attraction power etc.Attachment, by liquid-solid attachment, namely " soaks " to promote." soaking " is the degree of fluid wetable solid substantially, and is the function of adhesive power between liquid and solid.Such as, when the droplet of liquid is formed on a solid surface, such as, water droplet on glass, such adhesion is apparent.In addition, the ability of beneficial agent arrival substrate surface also will be enhanced.This is because when droplet adheres in substrate, beneficial agent can easily through liquid direct on substrate surface.But drop tends to be spherical.If especially substrate presents low surface area to droplet itself, then this causes the low surface area to the substrate such as initial contact of natural fiber (example is hair or cotton fibre) or synthon (example is nylon or polypropylene).Thus initial attachment is tending towards being problematic.

Core-shell particles comprises solid shell and comprises the liquid inner core of beneficial agent.The particle of these types is usually spherical, but also can be aspherical, thus for improve initial attachment and adhesivity larger surface-area is provided.But the carrier material particles that core-shell particles is loaded with those by adhesion issues and beneficial agent based on electric charge still shifts.For solid particulate or core-shell particles, the contact area between particle and substrate is restricted, this is because solid is tending towards not being out of shape too much when contacting substrate.When substrate has uneven surface shape characteristic, as bending hair or fiber, this is especially problematic.

Therefore, this area still needs benefit agent delivery particle, and described particle overcomes the problems referred to above at least in part.

It has surprisingly been found that now that the non-spherical droplets comprising the solid material limiting droplet shape overcomes the problems referred to above.Solid material makes droplet have non-spherical shape, but because droplet be liquid over its entire surface, so can soaking and being diffused in substrate by droplet and realize due to substrate to the attachment of the best of substrate.

Summary of the invention

The present invention relates to non-spherical droplets, wherein said drop comprises: liquid; With internal solids material, described internal solids material limits the non-spherical shape of droplet; And beneficial agent; And wherein the three-phase contact angle of drop on internal solids material is less than 1 °; And wherein, described drop has the yielding stress between 100 and 1,000,000 pascal.

The invention still further relates to composition, described composition comprises outside liquid and drop as above, wherein said drop and outside liquid unmixing.

The invention still further relates to and beneficial agent is deposited to suprabasil method, said method comprising the steps of: (i) prepares liquid, described liquid comprises outside liquid and non-spherical droplets, and wherein said droplet comprises: (a) liquid; (b) internal solids material, described internal solids material limits the shape of droplet; And (c) beneficial agent; And wherein the three-phase contact angle of liquid on internal solids material is less than 1 °; And wherein said drop has the yielding stress between 100 and 1,000,000 pascal; And wherein, described drop and outside liquid unmixing; And (ii) makes liquid and substrate contact.

The invention still further relates to the method for the preparation of aspherical droplet according to the present invention, said method comprising the steps of: (i) is by first liquid composition and second liquid and liquid benefit agent mixing, described first liquid composition comprises and has between 100 and 1,000, the molten component of the yielding stress between 000 pascal, described yielding stress is measured at the temperature of 25 DEG C, wherein described first liquid and second liquid and liquid benefit agent is mixed to prepare drop pre-composition at higher than the temperature of 50 DEG C; (ii) prepare passage, wherein said passage optionally comprises the 3rd liquid, described 3rd liquid and described second liquid unmixing, and wherein said 3rd liquid-flow is through described passage; (iii) introduce in described passage by the independent droplet of described drop pre-composition, wherein said passage comprises contraction flow region and is shaped to make described droplet; (iv) enter described contraction flow region under making that described pre-composition is little and dropping in 50 DEG C or following temperature, described first liquid is solidified to prepare liquid aspherical droplet; V () makes described non-spherical droplets deposit to comprise in the composition of described 3rd liquid, described 3rd liquid and described second liquid unmixing.

Accompanying drawing explanation

Fig. 1 discloses the example of the two-dimensional projection of three-dimensional non-spherical droplets.

Fig. 2 A depicts three-phase Contact-angle measurement.

Fig. 2 B depicts three-phase Contact-angle measurement.

Fig. 2 C depicts three-phase Contact-angle measurement.

Fig. 3 discloses according to aspherical droplet of the present invention.

Fig. 4 discloses exemplary droplet shape preparation method.

Embodiment

non-spherical droplets

The present invention relates to non-spherical droplets, wherein said drop comprises: liquid; With internal solids material, described internal solids material limits the non-spherical shape of droplet; Beneficial agent; And wherein the three-phase contact angle of drop on internal solids material is less than 1 °; And wherein said drop has between 100 pascals and 1, between 000,000 pascal, or even between 1000 pascals and 100, between 000 pascal, or the yielding stress even between 5000 and 10,000 pascals.

The yielding stress of drop is measured at the temperature of 25 DEG C.Not bound by theory, described yielding stress is measuring of drop rheological characteristics.Yielding stress be the drop that comprises liquid and internal solids material from can not flow state to can flow state time point.Method for measuring yielding stress describes hereinafter in more detail.

Spherical droplets refers to the droplet of the impartial distance in each Dian Yuqi center on wherein its surface.Should be appreciated that term " equidistant " comprises the standard error degree of +/-2%.Non-spherical droplets is that to have be not the droplet of spherical any shape.Not bound by theory, non-spherical droplets is favourable, because it shows the excellence attachment property to substrate due to the wetting effect of liquid, but also the excellent adhesion shown substrate due to the high surface area of aspherical droplet.

Non-spherical droplets can be any non-spherical shape.Multiple non-limitative example is found in Fig. 1.Figure in Fig. 1 represents the two-dimensional projection of three-dimensional non-spherical droplets.At this, shadow area refers to the area of three-dimensional body two-dimensional projection in the plane, as 3D object is being placed on slide glass, or when 3D object is clamped between slide glass and cover glass, and the image provided during viewing microscope slide glass.Aspherical droplet can be rod 1.Alternatively, it can have elongated but bending shape 2, or even trilateral or wedge-type shape 3.

Drop is construed as and refers to that the whole outside surface of wherein droplet is the droplet of liquid 4.Even if droplet also comprises solid ingredient 5, as drop, described solid ingredient also must be encapsulated in the liquid portion 4 of droplet completely.Any point on the surface of internal solids material 6 and the distance between the outward flange 7 of drop can be at least 10 nanometers, or even at least 100 nanometers, or even at least 1 micron.

Liquid can be any suitable liquid.Liquid can be oil or liquid, aqueous.Suitable liquid describes hereinafter in more detail.It should be pointed out that for the material of liquid, internal solids material and beneficial agent all different from each other.Such as, the liquid in droplet and beneficial agent are not identical materials.Material for internal solids material and droplets of liquid can derive from identical source, and such as both can be all fatty alcohol, but at room temperature, the fatty alcohol in liquid is liquid, and the fatty alcohol in solid is solid.Thus in this object lesson, they will be different in fusing point.

Internal solids material can be any suitable solid material.Internal solids material can be porous or atresia.Suitable internal solids material is described below.By the volumeter of droplet, internal solids material can account at least 5%, or even at least 10%, or even at least 20%, or even at least 50%.By the volumeter of drop, internal solids material can account for maximum 95%.How those skilled in the art knownly can use known technology determination per-cent.

Internal solids material limits the shape of drop.When having any external fluid that drop is present in wherein (such as in emulsion), the drop not comprising the internal solids material limiting shape will attempt formation spheroid, this is because by its interfacial tension γ applied pressure.When the yielding stress coupling of internal solids material or when exceeding by interfacial tension applied pressure, can by the internal structure in droplet as internal solids material is offset, thus droplet be made stably to retain non-spherical shape by interfacial tension applied pressure.Maintenance is stablized, as long as force balance does not change by the drop of distortion.If such as by with thinner as water dilutes outside liquid, and make to be increased by interfacial tension applied pressure, thus exceed the yielding stress of the droplet comprising internal solids material, then droplet will change into finer and close shape, comprise spheroid or more bending form.Similarly, if such as maintain with softening or fused inner solid material identical/similar pressure that applied by interfacial tension by heating and make the yielding stress of the droplet comprising internal solids material decline simultaneously, then described balance may move.Other thinner can comprise aqueous dispersion or their mixture of the aqueous solution of tensio-active agent or the aqueous solution of polymkeric substance or colloid.Not bound by theory, the yielding stress of internal solids material contributes to the overall yielding stress of drop.Thus internal solids material contributes to the distortion of resisting overall drop.It should be pointed out that the yielding stress of internal solids material always will be greater than the yielding stress of complete drop (comprising internal solids material).Method for measuring yielding stress describes hereinafter in more detail.

Drop comprises beneficial agent.Described beneficial agent is restricted to gives the compound of beneficial effect or composition, and such as clean, coating, Sediment rehabilitation, colour-change, reduction frictional coefficient or water repellency, sensation, biological agent comprise enzyme, probiotic bacterium, prebiotics, medicine, nutritional formulation or their combination.Beneficial agent is hereafter describing in more detail.

Drop has the three-phase contact angle of droplets of liquid on internal solids material being less than 1 °, and it is called as the condition of complete wetting." wettability " is the degree that liquid can soak solid substantially, and is the function of adhesive power between liquid and solid.The wetting basic physics characteristic being solid-liquid and combining.In natural non-wetted, or in low wettability situation, can add wetting agent if tensio-active agent, polymkeric substance or colloid are with the characteristic of modified fluid or solid, thus fluid and solid are soaked between the two, described soaking does not occur when having additive.In the context of the present invention, the surface of internal solids material is by droplets of liquid complete wetting.In other words, the surface of internal solids material not with the environmental exposure of non-spherical droplets outside.Only the outside surface of the liquid portion of non-spherical droplets contacts with outside atmosphere.

Not bound by theory, three-phase contact angle is that liquid keeps around internal solids material and the measuring of the ability be not separated with it.In liquid external environment, if the not exclusively wetting internal solids material of the liquid ingredient of droplet, then in order to realize balance, droplets of liquid may be separated with solid and form drop independently in outside atmosphere.If in the outside liquid material of certain volume, the three-phase contact angle of droplets of liquid component on internal solids material is less than 1 °, then liquid keeps around internal solids material instead of is separated with it.

Fig. 2 A, Fig. 2 B and Fig. 2 C represent the step measuring three-phase contact angle.Three-phase contact angle is measured by the sample sample of internal solids material 5 being placed in outside liquid material 8.Then, the droplet with the immiscible second liquid 4 of outside liquid material (i.e. droplets of liquid) is placed on solid surface 9.Then, as shown in Figure 2 A, contact angle 10 is measured according to the edge 11 along droplet from the tangent line of internal solids material surface 9.The contact angle 12 (Fig. 2 B) reduced is caused, until observe for 13 times total wetting (Fig. 2 C) in very small angles by " wettability " of droplets of liquid material increase internal solids material.The wetting of increase refers to that droplets of liquid material preferably keeps associating with internal solids material instead of being separated with it.Method for measuring three-phase contact angle describes hereinafter in more detail.

Described drop can have the volume of 1ml or less.So-called " volume ", refers to the space occupied by drop herein.Drop can have the volume of 0.8ml or less or even 0.6ml or less.Drop can have the volume of at least 0.5 picoliter or even 4 picoliters or even 35 picoliters.

Drop can have at least one orientation, described orientation have be less than 0.9 or be even less than 0.8 or be even less than 0.7 circularity.As used herein, " orientation " refers to when observing from any specified point, two-dimensional projection's area of 3D shape.The angle of observing according to it or point are presented different orientations by 3D shape.Therefore, at least one in these orientations must have the circularity being less than 0.9.This refers to from different orientations, or multiple orientation, and identical drop has the circularity being greater than 0.9.Described circularity can be at least 0.1 or even 0.2 or even 0.3.Not bound by theory, positive round has the circularity of 1.0.Described circularity is that two-dimensional projection's area of particle is multiplied by 4 π, then divided by particle projection girth square without unit value;

At this, shadow area refers to the area of three-dimensional body two-dimensional projection in the plane, as 3D object is being placed on slide glass, or when 3D object is clamped between slide glass and cover glass, and the image provided during viewing microscope slide glass.How those skilled in the art knownly can use the circularity of standard equipment known in the art and technical measurement projection.Exemplary testing method is hereafter describing in detail.

Drop can have be greater than 1.0 at least one orientation, or is even more than or equal to 1.5 or be even more than or equal to 2.0, or be even more than or equal to 10 or be even more than or equal to 100 length-to-diameter ratio.Described length-to-diameter ratio for being not more than 200, or even can not be greater than 175, or is not even greater than 150.So-called " orientation " refers to when observing from any specified point, two-dimensional projection's area of 3D shape.The angle of observing according to it or point are presented different orientations by 3D shape.Therefore, at least one in these orientations must have the length-to-diameter ratio of at least 1.0.This refers to, from different orientations, or multiple orientation, identical drop can have the length-to-diameter ratio of 1 or less.Length-to-diameter ratio is by specifying major axis and minor axis to measure to the projection of drop.At this, shadow area refers to that three-dimensional body is at the area of plane as the two-dimensional projection on slide.This is by realizing the artificial frame of projection matching of drop, and wherein said rectangular dimension determines each axle value.Then length-to-diameter ratio is determined as the length ratio of major axis to minor axis.The illustrative methods measuring length-to-diameter ratio is hereafter describing in more detail.

other droplet

In one embodiment, spherical or non-spherical droplets can comprise liquid; With internal solids material, described internal solids material limits the shape of droplet; And wherein said liquid or internal solids material or above-mentioned both comprise beneficial agent; And wherein the three-phase contact angle of liquid on internal solids material is less than about 1 °; And wherein, when measuring at about 25 DEG C, described drop has between about 100 pascals and Yue 100, the yielding stress between 000 pascal; And wherein, described liquid and internal solids material are chemically different from each other.So-called " chemically different " refers to that liquid and internal solids material have different chemical compositions, such as different chemical substances or compound.

In one aspect, non-spherical droplets can for comprising the drop of following material: liquid; With internal solids material, described internal solids material limits the shape of droplet; And wherein the three-phase contact angle of liquid on internal solids material is less than about 1 °; And wherein, when measuring at about 25 DEG C, described drop has between about 100 pascals and Yue 1, the yielding stress between 000,000 pascal; And wherein, described droplet comprises at least 10 % by weight inorganic materials; And wherein said droplet comprises the beneficial agent of at least 1 % by weight.

Described droplet can comprise 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even most as many as 100 % by weight inorganic materials.

Described droplet can comprise 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even most as many as 100 % by weight beneficial agent.

Described liquid can comprise inorganic materials.Alternatively, internal solids material can comprise inorganic materials.Alternatively, drop and internal solids material all can comprise inorganic materials.When be present in above-mentioned in both time, the weight percent comprising liquid and the inorganic materials of internal solids material can be identical or can be different.

Droplet can comprise various material, and described material comprises the liquid of droplet or part or all of internal solids material.One or more comprising in the material of liquid can comprise one or more beneficial agents, and described beneficial agent comprises the liquid of the droplet of most as many as 100 % by weight.One or more comprising in the material of internal solids can comprise one or more beneficial agents, and described beneficial agent comprises the liquid of the droplet of most as many as 100 % by weight.

Inorganic materials can comprise inorganic polymer.

So-called " inorganic materials " refers to all substances except hydrocarbons and their derivates, or is not all substances of carbon compound (removing carbon dioxide and nitric sulfid outside).Suitable inorganic materials can comprise calcium salt and zinc salt, zinc oxide, Zinc Pyrithione, compound, bismuth compound, viscosity, water or their mixture based on calcium.The suitable compound based on calcium comprises calcium carbonate.Suitable clay can comprise hectorite, kaolin, polynite, attapulgite, illite, wilkinite, halloysite and their mixture.Inorganic polymer is that wherein main chain does not comprise the polymkeric substance of carbon atom.Suitable inorganic polymer comprises polysilane, poly-germane, poly-stannane, polysulphide; And there is in main chain the heterogeneous chain polymer of the atom more than a type, such as poly-boron ammonia, polysiloxane is if polydimethylsiloxane (PDMS), polymethyl hydrogen siloxane (PMHS) and polydiphenylsiloxane, polysilazane are as over hydrogenation polysilazane (PHPS), polyphosphonitrile, polysulfur nitride and their mixture.

In one embodiment, non-spherical droplets can comprise liquid; With internal solids material, described internal solids material limits the shape of droplet; And wherein the three-phase contact angle of liquid on internal solids material is less than about 1 °; And wherein, when measuring at about 25 DEG C, described drop has between about 100 pascals and Yue 1, the yielding stress between 000,000 pascal; And wherein, described droplet comprises at least 10 % by weight organic compound, synthetic organic polymer and semi-synthetic organic polymer altogether; And wherein said droplet comprises the beneficial agent of at least 1 % by weight.

Described droplet can comprise 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or be even up to 100 % by weight organic compound, synthetic organic polymer, semi-synthetic organic polymer or their mixture.

Described droplets of liquid can comprise 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even most as many as 100 % by weight beneficial agent.

Droplets of liquid, internal solids material or their combination can include organic compounds, synthetic organic polymer, semi-synthetic organic polymer or their mixture.

Described droplet can comprise at least 1 or even 2 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even 100 % by weight organic compound materials.Described droplet can comprise the beneficial agent of at least 1 or even 2 or even 3 or even 4 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even 100 % by weight.Organic compound material is one or more carbon atom in the hydrocarbon chain of wherein one or more non-oxygen hybrid atom MCM-41 organic materialss and/or replaces the carbon atom in other hydrocarbon chain of organic materials to work.The Exemplary organic compounds comprising polymer form comprises: thio-compounds (also referred to as organic compounds containing sulfur, such as mercaptan, sulfide and disulphide); P contained compound (such as phosphine class and class); Nitrogenous compound (such as amine and ammonium class); Silicoorganic compound (such as silane, silyl halides, silanol, siloxanes, organoalkoxysilane, silazane and polydimethylsiloxane); Organoboron compound (such as borine); Organometallic compound; Organic clay (also referred to as organic polysilicate) compound, the such as kaolin of chemical bonding organic structure or polynite on it; Organo-tin compound; Organic zinc compound; And their mixture.Organic compound material can comprise one or more organic compound.

Described droplet can comprise the synthetic organic polymer of at least 1 or even 2 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even 100 % by weight or semi-synthetic organic polymer.The semi-synthetic adjection related to beyond hydrogenation natural polymer, to increase its saturation ratio.

Synthetic organic polymer material comprises thermoplastic material, such as acrylonitrile-butadiene-styrene (ABS) (ABS), acrylic acid or the like, zylonite, rhodia, ethane-acetic acid ethyenyl ester (EVA), ethylene-vinyl alcohol (EVAL), (PTFE, comprises FEP to fluoroplastics, PFA, CTFE, ECTFE, ETFE), ionomer, acrylic acid or the like/PVC alloy (such as Kydex, branded goods), liquid crystalline polymers (LCP), polyacetal (POM or acetal), polyacrylic ester (acrylic acid or the like), polyacrylonitrile (PAN or vinyl cyanide), polymeric amide (PA or nylon), polyamide-imide (PAI), polyaryletherketone (PAEK or ketone), polyhutadiene (PBD), polybutene (PB), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polycyclohexylene's diformazan alcohol ester (PCT), polycarbonate (PC), polyhydroxy-alkanoates (PHA), polyketone (PK), polyester, polyethylene (PE) (comprising Low Density Polyethylene (LDPE) and high density polyethylene(HDPE) (HDPE) form), polyether-ether-ketone (PEEK), polyetherimide (PEI), polyethersulfone (PES), polysulfones, chlorinatedpolyethylene (PEC), polyimide (PI), poly(lactic acid) (PLA), polymethylpentene (PMP), polyphenylene oxide (PPO), polyphenylene sulfide (PPS), polyphthalamide (PPA), polypropylene (PP), polystyrene (PS), polysulfones (PSU), polyvinyl chloride (PVC), polyvinylidene dichloride (PVDC), fluoropolymer (such as Spectralon), and their mixture.Semi-synthetic organic polymer material comprise crosslinked thermosetting material such as comprise epoxy resin, phenol formaldehyde (PF), urea aldehyde, resol, Synolac, aminoresin, polyester, epoxide, siloxanes, protein those; Other cross-linked material such as natural rubber and synthetic rubber (it can be such as cured by sulfuration); And their mixture.Semi-synthetic organic polymer material comprise Mierocrystalline cellulose (Mierocrystalline cellulose of such as cellulose gum, cellulose triacetate, nitrocotton, artificial silk, cellulose film and other modification) and treated starch (comprise physical treatment, enzymically treat or chemical treatment, such as by acetylize, chlorination and acid-hydrolyzed those) and their mixture.

In one aspect, non-spherical droplets comprises liquid; With internal solids material, described internal solids material limits the shape of droplet; And wherein the three-phase contact angle of liquid on internal solids material is less than about 1 °; And wherein, when measuring at about 25 DEG C, described drop has between about 100 pascals and Yue 1, the yielding stress between 000,000 pascal; And wherein, described droplet comprises and is less than 95 % by weight fluent materials; And wherein said droplet comprises the beneficial agent of at least 1 % by weight.

Described droplet can comprise and be less than 80 or be even less than 70 or be even less than 60 or be even less than 50 or be even less than 40 or be even less than 30 % by weight matrix materials.

In one embodiment, non-spherical droplets comprises liquid; With internal solids material, described internal solids material limits the shape of droplet; And wherein the three-phase contact angle of liquid on internal solids material is less than about 1 °; And wherein, when measuring at about 25 DEG C, described drop has between about 100 pascals and Yue 1, the yielding stress between 000,000 pascal; And wherein, described droplet comprises and is less than 95 % by weight THCs; And wherein said droplet comprises the beneficial agent of at least 1 % by weight.

Described droplet can comprise and be less than 80 or be even less than 70 or be even less than 60 or be even less than 50 or be even less than 40 or be even less than 30 % by weight hydrocarbon materials.

Lipid forms one group of naturally occurring molecule widely, and described molecule comprises fat, wax, sterol, liposoluble vitamin (such as vitamin A, vitamins D, vitamin-E and vitamin K), monoglyceride, triglyceride, triglyceride level, phosphatide etc.Lipid can derive from organism such as animal, fungi, microorganism or plant.Described droplet can comprise the beneficial agent of at least 1 or even 2 or even 3 or even 4 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even 100 % by weight.

Droplet can comprise most as many as 95 % by weight matrix material.Described droplet can comprise and be less than 1 or even 2 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 % by weight lipids.The lipid gross weight of droplet can be comprised in liquid or internal solids material completely, the following corresponding ratio being not more than 100% at the most of maybe can adding up distributes between liquid and internal solids material: be more than or equal to 10% and be less than or equal to 90%, be more than or equal to 20% and be less than or equal to 80%, be more than or equal to 30% and be less than or equal to 70%, be more than or equal to 40% and be less than or equal to 60%, be more than or equal to 50% and be less than or equal to 50%, be more than or equal to 60% and be less than or equal to 40%, be more than or equal to 70% and be less than or equal to 30%, be more than or equal to 80% and be less than or equal to 20%, and be more than or equal to 90% and be less than or equal to 10%.In another example, droplet can be included as liquid and the internal solids material of 100% lipid, and described internal solids material comprises and is less than 100%, be less than 90%, be less than 80%, be less than 70%, be less than 60%, be less than 50%, be less than 40%, be less than 30%, be less than 20%, be less than 10% lipid or do not comprise lipid.In another example, internal solids material can be included as liquid and the droplet of 100% lipid, and described droplet comprises and is less than 100%, be less than 90%, be less than 80%, be less than 70%, be less than 60%, be less than 50%, be less than 40%, be less than 30%, be less than 20%, be less than 10% lipid or do not comprise lipid.

The surplus materials of droplet can comprise non-lipid material, such as inorganic polymer; Hydro carbons; Organic compound material; Synthetic organic polymer; Semi-synthetic organic polymer; Alkylogen; Superoxide; Carbohydrate, comprises sugar, simple starch, polysaccharide (such as starch, Mierocrystalline cellulose), pectin, natural gum (such as gelling gum and xanthan gum) or their mixture.Described droplet also can comprise non-lipid material, such as aliphatic cpd (comprise paraffin, be also referred to as alkane compound), olefinic compounds and acetylenic compound; Ring compound, it comprises alicyclic compound, aromatic hydroxy compound and comprises the heterogeneous ring compound of pyrroles, furans and thiazole; Alcohols, it comprises fatty alcohol; Ether; Aldehyde and ketone or their mixture.

Hydro carbons is the organic compound be only made up of elemental carbon and hydrogen.Hydro carbons can derive from oil, oil, coal or Sweet natural gas.Droplet can comprise most as many as 95 % by weight hydrocarbon material.Described droplet can comprise the beneficial agent of at least 1 or even 2 or even 3 or even 4 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 or even 100 % by weight.Described droplet can comprise and be less than 1 or even 2 or even 5 or even 10 or even 20 or even 30 or even 40 or even 50 or even 60 or even 70 or even 80 or even 90 % by weight hydrocarbon.The gross weight of the hydrocarbon of droplet can be comprised in liquid or internal solids material completely, the following corresponding ratio being not more than 100% at the most of maybe can adding up distributes between liquid and internal solids material: be more than or equal to 10% and be less than or equal to 90%, be more than or equal to 20% and be less than or equal to 80%, be more than or equal to 30% and be less than or equal to 70%, be more than or equal to 40% and be less than or equal to 60%, be more than or equal to 50% and be less than or equal to 50%, be more than or equal to 60% and be less than or equal to 40%, be more than or equal to 70% and be less than or equal to 30%, be more than or equal to 80% and be less than or equal to 20%, and be more than or equal to 90% and be less than or equal to 10%.

Hydrocarbon can comprise aliphatic cpd such as paraffin (being also referred to as alkane compound); Olefinic compounds; Acetylenic compound; And alicyclic hydrocarbon compound and aromatic hydroxy compound.The surplus materials of droplet can comprise non-hydrocarbons material.Described non-hydrocarbons material can comprise following material, and described material comprises inorganic polymer; Lipid; Organic compound material; Non-hydrocarbons synthetic organic polymer; The semi-synthetic organic polymer of non-hydrocarbons; Alkylogen; Superoxide; Carbohydrate, comprises sugar, simple starch, polysaccharide (such as starch, Mierocrystalline cellulose); Pectin; Natural gum (as gelling gum and xanthan gum); Or their mixture; Heterogeneous ring compound (such as pyrroles, furans and thiazole); Alcohols (such as fatty alcohol); Ether; Aldehyde; Ketone; And their mixture.

It should be noted that some organic compound can be considered to belong to (such as, ether and amine) in multiple groups or class.Organic compound can derive from organism alive, such as animal, fungi, microorganism or plant, or derives from non-renewable resource such as oil, oil, coal or Sweet natural gas.Organic compound directly can extract with purifying, separation, distillation or other processing step from source.Organic compound, by one or more chemical step, such as by reaction, may comprise plurality of raw materials compound, synthesize or prepare.Such as, polymkeric substance is obtained by monomer during polymerization procedure.The polymkeric substance of synthesis is by using being combined to form of following monomer: derive from the plant of renewable resources such as existing work or zoogenous monomer; And derive from the monomer of Nonrenewable resources such as coal, oil, oil and gas.

liquid

Drop comprises liquid (being also referred to as " droplets of liquid ").Described liquid can be any suitable liquid, its show be less than 1 ° with the three-phase contact angle of internal solids material.Described liquid can be liquid, aqueous or oily or alcohol.

Droplets of liquid can be oil, even hydrophobicity oil.Described oil can have and is greater than 10 DEG C or even 5 DEG C or the even fusing point of-20 DEG C.Described oil can have and is not more than 25 DEG C or be not even greater than 22.5 DEG C or be not even greater than the fusing point of 20 °.

Described oil can be selected from alkane, triglyceride level and triglyceride and monoglyceride, saturated and unsaturated fatty acids, sterol, silicone oil, fluorinated oil, mineral oil and their mixture.Oil can derive from oil, plant, animal, fish or vegetable material.Oil can derive from natural oil-containing material, or can prepare synthetically.

Droplets of liquid can also be liquid, aqueous.Liquid, aqueous can be the aqueous solution of tensio-active agent, the aqueous dispersion of colloidal particles, the aqueous solution of polymkeric substance or their mixture.Suitable tensio-active agent can comprise anion surfactant, nonionogenic tenside, cats product, zwitterionics or their mixture.

Described droplets of liquid can also be alcohol.Suitable alcohol can comprise following alcohol: such as ethanol, propyl alcohol, butanols, amylalcohol, hexanol and octanol.It should be pointed out that liquid and internal solids material can comprise fatty alcohol.Suitable alcohol also can comprise fatty alcohol.The fatty alcohol (such as stearyl alcohol) of formation material inside is different from the fatty alcohol in liquid by the following fact: the fatty alcohol forming internal solids material has the fusing point being not less than 40 DEG C, but the fatty alcohol be present in droplets of liquid has and is greater than 10 DEG C or even 5 DEG C or even-20 DEG C, but be not more than 25 DEG C or be not even greater than 22.5 DEG C or be not even greater than the fusing point of 20 DEG C.

internal solids material

Internal solids material can have the yielding stress of at least 10,000 pascal or even at least 12,500 pascals or even 15,000 pascal.Internal solids material can have maximum 100, and 000,000,000 pascal or even 10,000,000,000 pascal or even 1,000,000,000 pascal or even 100,000,000 pascal or even 10,000,000 pascal or even 1,000, the yielding stress of 000 pascal.The yielding stress of internal solids material is measured at the temperature of 25 DEG C.

Internal solids material can be porous or atresia, and can be water-soluble or water-insoluble.

Fig. 3 discloses the non-limitative example of aspherical droplet of the present invention.Internal solids material can be porous.So-called " porous " refers to that solid material is included in the void volume in described solid material.Void volume can comprise droplets of liquid, or can completely not containing droplets of liquid.Void volume can comprise beneficial agent.Distance between any point 15 of droplets of liquid 4 completely around internal solids material 14 and on the surface of internal solids material and droplet outside surface 16 can from the outside surface change of any point internal solids material surface and droplet, and namely " thickness " of the liquid portion of drop can change.Alternatively, internal solids material can be atresia.Internal solids material can be the form of housing 17, wherein there is the chamber 18 in described solid material.This chamber 18 can comprise another kind of material.Internal solids material can be used as single structure to be existed, such as, single solid structure 19 in drop or can the form 20 of more than one structure exist.If there is more than one structure, then these structures can or can not contact with each other in drop.Internal solids material can be the assembly of discreet component.Such as, this assembly can comprise a series of close contact but comprise the rod solid material 21 of void volume each other.In this case, owing to there is void volume between rod solid material, so internal solids material is by for porous.Alternatively, internal solids material can comprise porous material 22, wherein there is not the non-porous material 23 of void volume, case material 17 or their combination 24.

Internal solids material can comprise the assembly of solid form or parts, and described assembly forms general internal shape in location, and no matter it is such as rod or ring-type overall shape.In one example in which, the shape of internal solids material can be rod, can be maybe give the rod of the overall rod shape of drop or the assembly of dentation or needle-like.Internal solids material in rod can be porous, atresia, for housing or be tubing/pipeline (that is, inner hollow and two ends place opening).The assembly of described bar can comprise porous bar, without vent stem, rod shell, tubing/pipeline or their combination.Alternatively, internal solids material can comprise spherical form or sub-component 25, in this case, is that it totally gives the assembly 26 of the spherical form of drop non-spherical shape by needing internal solids material.Alternatively, internal solids material can have substantially smooth profile 27 (that is, comprise at least two substantially smooth side).

Solid material can be selected from wax, polymer materials, fat material, inorganic materials or their mixture.Wax can derive from oil, plant, animal, fish or vegetable material.Wax can derive from natural waxy material, or can prepare synthetically.

Suitable wax can comprise synthetic wax, mineral wax, chloroflo, vegetable wax, animal wax or their mixture.Synthetic wax can comprise polyethylene.Mineral wax can comprise ceresine.Chloroflo can comprise paraffin, crystallite chloroflo, Vaseline wax or their mixture.Vegetable wax can comprise castor wax, carnauba wax or their mixture.Animal wax can comprise beeswax, spermaceti or their mixture.Other suitable wax can comprise can trade(brand)name Castrolatum ^tM, Super White Proto-Pet ^tM, Thixcin-R ^tMcommercially available those or their mixture.

Suitable polymer materials can comprise Mierocrystalline cellulose, polydimethylsiloxane, polymethylmethacrylate, polyethylene oxide, biological polymer or their mixture.Suitable biological polymer can comprise natural gum such as gelling gum, xanthan gum and carrageenin or their mixture.Other polymkeric substance can comprise polysiloxane, polymeric amide, polyamine, polycarbonate and polyester.

Suitable fat material can comprise triglyceride level and triglyceride and monoglyceride, saturated and unsaturated fatty acids, sterol and fatty alcohol.The fatty alcohol that the fatty alcohol (such as stearyl alcohol) forming material inside is different from liquid by the following fact: the fatty alcohol forming internal solids material has the fusing point being not less than 40 DEG C.The alcohol being applicable to internal solids comprises hexadecanol, stearyl alcohol and behenyl alcohol.

Suitable inorganic materials can comprise zinc oxide, compound, bismuth compound, clay or their mixture based on Zinc Pyrithione calcium.The suitable compound based on calcium comprises calcium carbonate.Suitable clay comprises hectorite, kaolin, polynite, attapulgite, illite, wilkinite, halloysite and their mixture.

beneficial agent

Drop comprises beneficial agent.Drop can comprise by weight, and 0.0001% or even 0.1% or even 1% to 50% or the beneficial agent of even to 40% or even to 30% or even to 20%.

Beneficial agent can be liquid or solid.If beneficial agent is solid, then it must have the three-phase contact angle of droplets of liquid on solid beneficial agent being less than 1 °.If beneficial agent is liquid, then when it is present in droplets of liquid, droplets of liquid/beneficial agent mixture must have the three-phase contact angle on internal solids material being less than 1 °.If beneficial agent is liquid, then when it is present in internal solids material, the three-phase contact angle of droplets of liquid on internal solids material/liquid benefit agent composition being less than 1 ° must be had.Internal solids material/liquid benefit agent composition can have the yielding stress of at least 10,000 pascal or even at least 12,500 pascals or even at least 15,000 pascal, and preferably maximum 100,000,000,000 pascal or even 10,000,000,000 pascal or even 1,000,000,000 pascal or even 100,000,000 pascal or even 10,000,000 pascal or even 1,000, the yielding stress of 000 pascal.Yielding stress is measured at the temperature of 25 DEG C.Alternatively, solid beneficial agent dissolves in liquid, the mixture wherein comprising the solid beneficial agent of liquid and dissolving have be less than 1 ° with the three-phase contact angle of internal solids material.

Beneficial agent can completely or partially be encapsulated in internal solids material maybe can be attached to solid material.Alternatively, it can be present in droplets of liquid, or it can be present in liquid and internal solids material.

Beneficial agent can be selected from and can be used for cleaning compositions as the compound in fabric or household cleaning composition, body wash and body care composition, hair and cosmetic treatment composition, health composition or their mixture.

Beneficial agent can be tensio-active agent.Suitable tensio-active agent can be selected from anion surfactant, nonionogenic tenside, zwitterionics, cats product or their mixture.If beneficial agent is tensio-active agent and the liquid be present in drop comprises tensio-active agent, then two kinds of tensio-active agents must be different.Suitable tensio-active agent can comprise lipid such as lipid acid, phosphatidyl glycerol, glyceryl phosphatide, phosphatidic acid (and salt), phosphatidylethanolamine, phosphatidylcholine (Yelkin TTS), phosphatidylserine, phosphatidylinositols, phosphatidylethanolamine, sphingolipid (such as ceramide), sphingophospholipid, cerebroside, glucocerebroside, Sphingolipids,sialo, steroidal, the cholesteryl ester of biogenetic derivation (such as, stearate), the tensio-active agent based on sugar, glycolipid, semi-lactosi, and their combination.

Beneficial agent can be transition-metal catalyst; Imines bleach enhancers; Enzyme, such as amylase, carbohydrase, cellulase, laccase, lipase, bleaching enzymes close as oxydase and peroxidase, proteolytic enzyme, pectic acid split and separate enzyme and mannase; The source of superoxide; Bleach-activating agent is tetra acetyl ethylene diamine such as, hydroxy benzene sulfonate bleach-activating agent such as nonanoyloxybenzene sulfonate, caprolactam bleach activators, imide bleach activators is N-nonanoyl-N-methylacetamide such as, pre-formed peracids is N such as, N-phthalyl amido peroxy caproic acid, nonyl amide group peroxide hexanodioic acid or diphenyl peroxide formic acid; Press down foam system, such as based on the suds suppressor of siloxanes; Whitening agent; Toning agent; Optical white; Fabric softener, such as clay, siloxanes and/or quaternary ammonium compound; Flocculation agent, as polyethylene oxide; Dye transfer inhibitor, the such as multipolymer of polyvinylpyrrolidone, poly 4 vinyl pyridine N-oxide compound and/or vinyl pyrrolidone and vinyl imidazole; The complete component of fabric, such as by the oligomerization product of imidazoles and epichlorohydrin; Dirt dispersant and dirt antiredeposition auxiliary agent, the epomine of such as oxyalkylated polyamine and ethoxylation; Antiredeposition component, such as polyester and/or terephthalate polymer, polyoxyethylene glycol, comprise the polyoxyethylene glycol replaced by vinyl alcohol and/or vinyl-acetic ester side base; Spices; The Mierocrystalline cellulose of cellulose polymer compound such as methylcellulose gum, carboxymethyl cellulose, Natvosol or other alkyl or alkyl alkoxy Mierocrystalline cellulose and hydrophobically modified; Carboxylic acid and/or its salt, comprise citric acid and/or Trisodium Citrate; And their any combination.

Beneficial agent can comprise spices, whitening agent, wormer, siloxanes, wax, flavour agent, VITAMIN, fabric softener and/or skin-care agent.Suitable beneficial agent comprises siloxanes, enzyme, perfume compound, spices, perfume base, fragrance starting material, reodorant, deodorant, stench, essential oil, ether, ester, ketone, alcohol, glycol, silica alkane, cyclic hydrocarbon, aldehyde, terpin, volatile insecticide, volatility wormer, volatility agricultural chemicals, volatility biocide, volatility mycocide, volatility weedicide and their mixture.Be applicable to skin benefit agent of the present invention and can comprise Whitfield's ointment, vitamins C, vitamin-E, vitamin A, alpha hydroxy acid, oxyacetic acid, N-6 furfuryladenine, ethyl resorcinol, niacinamide, Zinc Pyrithione, selenium sulfide, Octopirox, KETOKONAZOL, Climbazole and Whitfield's ointment.Finasteride, to regulate relevant proteinase inhibitor, keratinization conditioning agent (such as, Zinc Pyrithione (ZPT), composition based on tar, steroid (such as reflunomide), selenium sulfide, imidazoles, KETOKONAZOL, pyridone ketone and naturopathy agent) with hair growth; Octopirox, Crinipan AD, hair growth promoter; Crinipan AD and Zine Gluconate.

Usually, beneficial agent is expensive, therefore such as improves to send by droplet of the present invention can contribute to effectively using this type of component.

comprise the composition of drop

One aspect of the present invention is composition, and described composition comprises outside liquid and according to drop of the present invention.Described drop and outside liquid unmixing each other.Composition can be such as full formula consumer's goods product, such as liquid washing agent, shampoo or liquid hand soap.Alternatively, composition can for the solution prepared by human consumer, such as fabric washing liquid or dishwashing liquid.Composition can be fabric care product, household care products, healthcare product or aesthetic care products; Medicine; Or nutritive compositions.

Drop is in outside liquid.Described drop and outside liquid unmixing.Outside liquid can be hydrophilic liquid as liquid, aqueous, or lipophile liquid is as oil.If outside liquid is liquid, aqueous, then droplets of liquid is oil.Alternatively, if outside liquid is oil, then droplets of liquid is liquid, aqueous.

Suitable outside liquid can comprise water, comprise the aqueous dispersion of the liquid, aqueous of tensio-active agent or colloidal particles or the aqueous solution of polymkeric substance or their mixture.

It is not the promoter material of drop that composition also can comprise.Auxiliary component can comprise usually be present in Fabrid care composition, home care composition, cosmetic treatment composition or health composition those.It will be appreciated by those skilled in the art that this type of suitable auxiliary component.

beneficial agent is deposited on suprabasil method

The present invention also imagines beneficial agent is deposited to suprabasil method, said method comprising the steps of:

I) prepare non-spherical droplets, wherein said drop comprises:

A) liquid;

B) internal solids material, described internal solids material limits the shape of droplet; With

C) beneficial agent;

The three-phase contact angle of wherein said liquid on internal solids material is less than 1 °;

And wherein, described droplet has between 100 pascals and 1, between 000,000 pascal, or even between 1000 pascals and 100, the yielding stress between 000 pascal; And

Ii) drop and substrate contact is made.

Drop can be aerocolloidal form, the liquid dispersion namely in air.Alternatively, drop can in outside liquid, wherein said drop and outside liquid unmixing.

Drop can be according to drop of the present invention.Drop, outer solid material, beneficial agent, three-phase contact angle, yielding stress and outside liquid are described above.

prepare the method for aspherical droplet

Another aspect of the present invention is the method for the preparation of non-spherical droplets of the present invention, said method comprising the steps of:

I) by first liquid composition and second liquid and beneficial agent mixing, described first liquid composition comprises and has between 100 and 1,000, the molten component of the yielding stress between 000 pascal, described yielding stress is measured at the temperature of 25 DEG C, and wherein said first liquid and second liquid and beneficial agent mix to prepare drop pre-composition at higher than the temperature of 50 DEG C;

Ii) prepare passage, wherein said passage optionally comprises the 3rd liquid, described 3rd liquid and described second liquid unmixing, and wherein said 3rd liquid-flow is through described passage;

Iii) introduce in described passage by the independent droplet of described drop pre-composition, wherein said passage comprises contraction flow region and is shaped to make described droplet;

Iv) enter described contraction flow region under making that described pre-composition is little and dropping in 50 DEG C or following temperature, described first liquid is solidified to prepare liquid aspherical droplet;

V) described non-spherical droplets being deposited to comprises in the composition of described 3rd liquid, described 3rd liquid and described second liquid unmixing.

Drop pre-composition comprises two kinds of independently fractions.First fraction corresponds to the internal solids material of molten state, and the second fraction corresponds to droplets of liquid and beneficial agent.In order to form non-spherical droplets, these three kinds of components are present in droplet pre-composition as uniform mixture at higher than the temperature of 50 DEG C.Beneficial agent can be liquid or solid.If beneficial agent is solid, then it must have the three-phase contact angle of liquid on solid beneficial agent being less than 1 °.If beneficial agent is liquid, then when it is dissolved in droplets of liquid, droplets of liquid/beneficial agent mixture must have the three-phase contact angle on internal solids material being less than 1 °.Alternatively, solid beneficial agent dissolves in liquid, the mixture wherein comprising the solid beneficial agent of liquid and dissolving have be less than 1 ° with the three-phase contact angle of internal solids material.

In above-mentioned steps (iv), this even pre-composition to be introduced in compression member to make droplet be shaped, mixture is cooled to 50 DEG C or lower temperature simultaneously.The appropriate device reducing temperature can be interchanger, such as water-bath or cooling jacket.Along with temperature declines, the first fraction (the internal solids material of melting) cooling is also solidified with non-spherical shape.Due to be shaped internal solids material and liquid between interaction force, droplet maintain non-spherical shape.Interaction force is as above described in more detail about three contact angles.

Contraction flow region can be the form of kapillary, or wherein droplet pre-composition is extruded through the form of membranous system, or wherein droplet pre-composition passes the form of fiber spinning equipment or mould, or their mixing.

Fig. 4 shows the exemplary means making drop forming.By in droplet pre-composition 28 injection channel 29, wherein the 3rd liquid 30 flows through described passage.Each droplet of droplet pre-composition 29 passes into limited capillary zone 32, and wherein droplet pre-composition is configured as non-spherical shape 33.Kapillary is reduced to 50 DEG C or lower by 34 through interchanger to make temperature.Refrigerating unit 34 is passed, internal solids material cured 35 at the droplet of droplets mixing thing.

example

testing method

circularityuse the Zeiss Axiscop microscope being furnished with 20 times of objective lens purchased from Carl Zeiss MicroImaging Inc. (Thornwood, N.Y.), measured by optical microscopy.The 1mL sample of dispersing droplets body to be placed on slide and under being positioned objective lens.Sample is observed by eyepiece, and focuses and throw light on until droplet is visually clearly.Then use the ImageJ image analysis program purchased from National Institutes of Health (Bethesda, Maryland), make the image digitazation of independent droplet.Use ImageJ software, then usable floor area and girth analysis option analyze digitized image to measure two-dimensional areas and the girth of droplet.Then utilize formula given above, use the value be recorded on screen to calculate circularity.

length-to-diameter ratiouse the Zeiss Axiscop microscope being furnished with 20 times of objective lens purchased from Carl Zeiss MicroImaging Inc. (Thornwood, N.Y.A), measured by image analysis.The 1mL sample of dispersing droplets body to be placed on slide and under being positioned objective lens.Sample is observed by eyepiece, and focuses and throw light on until droplet is visually clearly.Then use the ImageJ image analysis program purchased from National Institutes of Health (Bethesda, Maryland), make the image digitazation of independent droplet.Use ImageJ software, then use frame analysis option to analyze digitized image.Then record from shown output screen frame size and for by obtaining major axis value it is calculated length-to-diameter ratio divided by minor axis value.

yielding stressuse and measure purchased from the TAInstruments AR2000 stress control rheometer of TA Instruments (New Castle Delaware), described stress control rheometer is furnished with 40mm 2 degree of pyramids and dull and stereotyped attachment.

0.5 gram of sample to be placed on base plate and temperature is set as 25 DEG C.For fluent material, toppled over by sample onboard, but cut into by solid sample cylindrical, described cylindrically have the diameter of cone and the height of 1 millimeter.

Described cone is reduced until the position of device software determination sample.

Sample is heated to 60 DEG C and at 100s ^-1shearing rate under mixing 5 minutes.

Then make sample be cooled to 25 DEG C with 5 DEG C of per minutes from 60 DEG C, under 1 hertz frequency, strain oscillation sample with 0.1% simultaneously.

Within every 10 seconds, measure at duration of oscillation equipment and record elastic modulus G '.

Once reach 25 DEG C, just continue G ' and measure and record, and the increase gradually carrying out straining is until reach 100%.G ' is as the function construction of strain.

The value of G ' will show the constant plateau value under low strain dynamic value, and critical strain be restricted to G ' first time under be reduced to its plateau value 20% or larger time strain.

Then the product as critical strain and G ' plateau value calculates yielding stress.

Such as, have 10, the G ' plateau value of 000 pascal and the sample of 0.2% critical strain have the yielding stress of 20Pa.

three-phase contact angleuse and measure purchased from the KrussDSA100 droplet shape analyser of Kruss Instruments (Hamburg Germany).

The planar sample of solid to be characterized is by being cut to make its surface for smooth and do not prepared by contamination by dust.

Then first liquid to be characterized is placed on the planar sample of the solid located bottom rectangle quartz cuvette, and cuvette is placed in sample panel.Then cuvette is filled with first liquid.

Then the droplet of second liquid is placed on the surface of solid sample.

Then, described equipment is used for utilizing measures contact angle purchased from the contact angle computing function of the DSA1 software of Kruss Instruments (Hamburg Germany), and software described in it carries out the best-fit on droplet border.

interfacial tension between droplet and outside liquiduse and measure purchased from the Kruss DSA100 droplet shape analyser of Kruss Instruments (HamburgGermany).

The syringe comprising droplets of liquid is attached on the syringe clamper of instrument, and is reduced to and comprises in the rectangle quartz cuvette of outside liquid sample.

Then, droplets of liquid is released syringe, until droplet is formed in outside liquid.By Sample equilibration five minutes, then use the interfacial tension function of DSA1 software to take pictures, described software carries out the best-fit on droplet border and the interfacial tension used it between calculating two kinds of liquid.

example 1

Below for preparing the example of rod droplet.By 70 % by weight Vaseline in beaker ^tMthe mixture mixing of board Vaseline, 15 % by weight Sigma Aldrich light mineral oils and 15 % by weight Shin Etsu silicone oil (beneficial agent).Be heated mixing simultaneously until melting is also even completely.Also mix until formation settled solution prepares the 10 mmole aqueous solution of sodium lauryl sulphate by 2.9 grams of sodium lauryl sulphate being mixed in a premium on currency.

It is 65 DEG C that two Harvard Apparatus PHD 2000 syringe pumps are arranged to temperature.A syringe pump is filled with uniform heated mixt, and another is filled with sodium lauryl sulphate composition.Described pump is connected to Dolomite 3000436 miniflow body piece.IDEX FEP 150 microns of ID pipes are connected to the outlet of described.The outlet pipe of described surrounds with the concentric copper pipe heat exchanger of the outlet pipe around miniflow body piece and its outer tube is connected to the reservoir of heat exchanger fluid.Composition flows through described equipment and collects rod droplet.

Alternatively, Shin Etsu silicone oil is replaced by 15 % by weight Arch chemical Zinc Pyrithione.

example 2

Below for preparing the example of rod droplet.By 70 % by weight Vaseline in beaker ^tMthe mixture mixing of board Vaseline, 15 % by weight Sigma Aldrich light mineral oils and 15 % by weight Shin Etsu silicone oil (beneficial agent).Be heated mixing simultaneously until melting is also even completely.

IDEX FEP 150 microns of ID pipes are connected to the outlet of New Era pump system Luer's syringe.Described syringe is connected to syringe pump.Be wound around Omega heating zone around syringe, and be set as the temperature of 61 DEG C.Uniform mixture is pumped across equipment and in beaker, collects rod droplet, described beaker comprises 10 micromole's aqueous solution of sodium lauryl sulphate.Alternatively, Shin Etsu silicone oil is replaced by 15 % by weight Arch chemical Zinc Pyrithione.

example 3

Rod droplet is prepared as described in example 1 above.Aqueous composition comprises 1.6 % by weight linear alkyl benzene sulphonic acid esters, the hydrogenated castor oil crystallization of 0.4 % by weight concentration, 10.07 % by weight boraxs and 0.2 % by weight NaOH.Aqueous composition has the yielding stress of 1Pa.In this aqueous composition, add rod drop to concentration is 1 % by weight, to prepare droplet composition.Under the yielding stress of 1Pa, aqueous composition is the aqueous composition (it can give false positive) preventing drop from assembling, but for pump not too thickness.

Droplet composition is split into two halves, one of sample of two kinds of gained is heated above the temperature of 60 DEG C and continues 15 minutes with fused inner solid material.When melting, rod droplet is presumed to spherical (because interfacial tension is no longer offset by internal structure).

Then use purchased from Becton, Dickinson and Company (Franklin Lakes, NewJersey) 1mL Becton-Dickinson syringe, the composition to be tested of 1ml volume is pushed through the 25mm Stainless Steel Filter clamper purchased from EMD Millipore Corporation (Billerica, Massachusetts).Average mesh size is ~ 550 μm.Remove filter webs after each test, and make whole net under the microscope imaging with detect deposition droplet quantity of material.

The amount of droplet deposition uses the Zeiss Axioscop microscope being furnished with 4 times of objective lens purchased from Carl Zeiss MicroImaging Inc. (Thornwood, N.Y.), is measured by optical microscopy.Whole filter webs to be placed on slide and under being positioned objective lens.Sample is observed by eyepiece, and focuses and throw light on until net is visually clearly.Then use the ImageJ image analysis program purchased from National Institutes of Health (Bethesda, Maryland), make the image digitazation of net.

Use ImageJ software, then usable floor area parameter is designated as the measurement particle option of output, analyzes digitized image to measure the area of the droplet of blocking filter net.Use summation option, measure the total area of the droplet in filter webs and often kind of droplet shape is compared.

For often kind of shape, the average area record of filter blocks is as follows:

Rod: 74.60 square millimeters

Spherical: 1.55 square millimeters

From data clearly, the area ratio spherical droplets of the filter webs blocked by rod drop much bigger.Therefore, rod drop has the adhesivity to substrate more much better than spherical droplets.

Dimension disclosed herein and value should not be understood to be strictly limited to quoted exact value.On the contrary, except as otherwise noted, each such dimension is intended to represent the value quoted and the function equivalent scope around this value.Such as, disclosed dimension " 40mm " is intended to represent " about 40mm ".

Unless expressly excluded or otherwise limited, each document quoted herein, comprises any cross reference or relevant patent or patent application, is all incorporated in full herein with way of reference.Quoting of any document is not all to recognize that it is the prior art of disclosed herein or claimed any invention or admit that it independently or propose, advise or disclose any this type of in the mode of any combination with other one or more reference any and invent.In addition, when any implication of term in the literature or definition and any implication of same term in the document be incorporated to way of reference or define is conflicted, should be as the criterion with the implication or definition of giving this term in the literature.

Although illustrate and describe the present invention with specific embodiment, those skilled in the art be it is evident that, can make when not departing from the spirit and scope of the invention multiple other change and modification.Therefore, all this type of that appended claims is intended to contain in the scope of the invention changes and modification.

Claims (amendment according to treaty the 19th article)

1. a non-spherical droplets, preferably wherein said drop has the volume of 1ml or less, and described non-spherical droplets comprises:

(a) liquid;

(b) internal solids material, described internal solids material limits the shape of described droplet; Preferably wherein by the volumeter of described drop, described internal solids material accounts at least 5% but is no more than 90%;

(c) beneficial agent;

The three-phase contact angle of wherein said liquid on described internal solids material is less than 1 °; And when measuring at 25 DEG C, described drop has between 100 pascals and 1, between 000,000 pascal, preferably between 1000 pascals and 100, the yielding stress between 000 pascal.

2. drop according to claim 1, wherein said droplet has the circularity at least one orientation being less than 0.9.

3., according to drop in any one of the preceding claims wherein, wherein said drop has and is greater than 1.0, is preferably more than or equals 2.0, and being more preferably more than or equal to the length-to-diameter ratio at least one orientation of 10.

4. according to drop in any one of the preceding claims wherein, wherein said liquid is liquid, aqueous or oily, preferably oil, and more preferably wherein said grease separation from alkane, triglyceride level and triglyceride and monoglyceride, silicone oil, mineral oil and their mixture.

5. according to drop in any one of the preceding claims wherein, wherein said internal solids material is selected from wax, preferably Microcrystalline Wax, paraffin, beeswax, ceresine and alkylating silicon wax; Polymer materials, preferably Mierocrystalline cellulose, polydimethylsiloxane and biological polymer; Natural gum, the preferably natural gum of such as gelling gum, xanthan gum and carrageenin; Inorganic materials, preferably zinc oxide and Zinc Pyrithione; And their mixture.

6. according to drop in any one of the preceding claims wherein, wherein said beneficial agent is selected from and can be used for cleaning compositions, preferably the compound of fabric or household cleaning composition, body wash and body care composition and their mixture.

7. according to drop in any one of the preceding claims wherein, wherein said beneficial agent is solid, and has the three-phase contact angle of droplets of liquid on described solid beneficial agent being less than 1 °.

8., according to drop in any one of the preceding claims wherein, wherein said beneficial agent is liquid; And

If a () is present in described droplets of liquid, then described droplets of liquid/beneficial agent mixture has the three-phase contact angle on described internal solids material being less than 1 °; Or

If b () is present in described internal solids material, then there is the three-phase contact angle of droplets of liquid on described internal solids material/liquid benefit agent composition being less than 1 °; Or

(c) their combination.

9. a composition, described composition comprises outside liquid and according to drop in any one of the preceding claims wherein, wherein said drop and described outside liquid unmixing.

10. composition according to claim 9, wherein said outside liquid is liquid, aqueous, and described drop is included as the liquid of oil, or wherein said outside liquid is oil, and described drop is included as liquid, aqueous liquid.

Beneficial agent is deposited to suprabasil method, said method comprising the steps of by 11. 1 kinds:

I) prepare liquid, described liquid comprises:

Outside liquid; With

According to non-spherical droplets in any one of the preceding claims wherein;

Ii) the three-phase contact angle of wherein said liquid on described internal solids material is less than 1 °; And wherein when measuring at 25 DEG C, described drop has between 100 pascals and 1, the yielding stress between 000,000 pascal; And wherein said drop and described outside liquid unmixing; And

Iii) described liquid and described substrate contact is made.

12. 1 kinds, for the preparation of the method according to aspherical droplet in any one of the preceding claims wherein, said method comprising the steps of:

I () is by first liquid composition and second liquid and liquid benefit agent mixing, described first liquid composition comprises and has between 100 and 100, the molten component of the yielding stress between 000 pascal, described yielding stress is measured at the temperature of 25 DEG C, wherein described first liquid and described second liquid and liquid benefit agent is mixed to prepare drop pre-composition at higher than the temperature of 50 DEG C;

(ii) prepare passage, wherein said passage optionally comprises the 3rd liquid, described 3rd liquid and described second liquid unmixing, and wherein said 3rd liquid-flow is through described passage;

(iii) introduce in described passage by the independent droplet of described drop pre-composition, wherein said passage comprises contraction flow region and is shaped to make described droplet;

(iv) enter described contraction flow region under making that described pre-composition is little and dropping in 50 DEG C or following temperature, described first liquid is solidified to produce liquid aspherical droplet; And

V () makes described non-spherical droplets deposit to comprise in the composition of described 3rd liquid, described 3rd liquid and described second liquid unmixing.

Claims

(a) liquid;

(b) internal solids material, described internal solids material limits the shape of described droplet; Preferably wherein by the volumeter of described drop, described internal solids material accounts at least 5% but is no more than 90%, and more preferably at least 10% but be no more than 95%, and more preferably at least 20 but be no more than 95%;

(c) beneficial agent;

(c) their combination.

I) prepare liquid, described liquid comprises:

Outside liquid; With

According to non-spherical droplets in any one of the preceding claims wherein;

Iii) described liquid and described substrate contact is made.

(iv) enter in described contraction flow region under making that described pre-composition is little and dropping in 50 DEG C or following temperature, described first liquid is solidified to produce liquid aspherical droplet; And