Background technology
Gamma cyhalothrin is the isomers S-alpha-cyano-3-phenoxy benzyl 1R by racemic ratio, cis-3-(Z-2-is chloro-3,3,3-trifluoropropyl-1-alkene-1-yl)-2,2-dimethyl cyclopropane carboxylic acid ester and R-alpha-cyano-3-phenoxy benzyl 1S,Cis-3-(Z-2-chloro-3,3,3-trifluoropropyl-1-alkene-1-yl)-2, the enantiomer of 2-dimethyl cyclopropane carboxylic acid ester kills compositionThe adopted name of the ISO approval of worm active component. Before desinsection product gamma cyhalothrin, be mixed with missible oil(emusifiableconcentrate). The product that contains gamma cyhalothrin of intending being used for agricultural or gardening is conventionally with noteVolume trade mark KARATE sells.
Lufenuron is that chemical name is N-[[[2, the chloro-4-of 5-bis-(1,1,2,3,3,3-hexafluoro propoxyl group) phenyl] amino]Carbonyl]-2, the adopted name of the ISO approval of the active insecticidal components of 6-difluorobenzamide. Lufenuron is generally with missible oil(emulsificableconcentrate, EC) dosage form is sold. Due to the characteristic of lufenuron, contain and exceed 5% lufenuronMissible oil dilute with water after easily crystallization.
In recent years, expect improve usefulness, widen insecticidal spectrum by two or more products of combined administration, and postpone rightThe resistance of pesticide. CN1176589 has described the pre-mixing agent of benzoyl urea agricultural chemicals and pyrethroid (pyrethroid)(premix). This combination is maintained the efficient and hypotoxicity of benzoyl urea agricultural chemicals, and unlike pyrethroid toolThere is the resistance to the action of a drug. The combination of benzoyl urea and pyrethroid has high application effect, extensively uses scope and grow duration, spyBe not applicable to prevention and kill the insect that the resistance to the action of a drug is strong. The pre-mixing agent that this patent is mentioned can be mixed with missible oil, oil-suspending agent, micro emulsionAgent, water-dispersible granule and microcapsules. But these patents do not provide or instruct the side of these preparations of preparing this pre-mixing agentMethod. And this patent does not provide environment storage stability data yet. With the base that is combined as of lufenuron and gamma cyhalothrinThe commercial product of plinth is not easy to obtain with missible oil, oil-suspending agent, microemulsion, water-dispersible granule and microcapsules.
Generally speaking, the formulated in combination of lufenuron or gamma cyhalothrin can be become to missible oil. But, according to inventor'sExperience, in said composition, the content of lufenuron should be less than 5%, to avoid the crystallization of lufenuron in the time diluting. Therefore, in compositionThe pre-mixing agent with high-load (exceeding 5%) lufenuron is not suitable for being mixed with missible oil. On the other hand, missible oil needs a large amount of organic moltenAgent (as aromatic hydrocarbon, chlorinated hydrocabon etc.), effectively to prepare active component. But known such organic solvent has toxicity and lifeState toxicology property, produces toxicity and ecological toxicity problem. For this conventional formulation, ICAMA (the Ministry of Agriculture) cancelsThe registration of missible oil. Other country (as Europe and Brazil) has improved the registered standard of missible oil.
According to inventor's experience, lufenuron is unstable in emulsion. The emulsion system of lufenuron and gamma cyhalothrinAgent is easily crystallization under environment storage requirement.
With regard to single gamma cyhalothrin preparation, some eco-friendly preparations are just under development. CN101828571Gamma cyhalothrin concentrated suspension (suspensionconcentrate) has been described. CN101167471 has described efficientlyLambda-cyhalothrin water-dispersible granules. CN1600099 has described gamma cyhalothrin wettable powder. At these preparationsIn, gamma cyhalothrin is easily separated out due to the low melting point of this active component in fine gtinding and crushing process; Institute obtainsThese compositions that obtain generally cannot be shown good dispersiveness and pot-life, particularly because the active component of low melting point existsIn environment storage temperature (5 DEG C to 50 DEG C), experience phase transformation causes caking and crystal growth.
CN1836513, WO2005096820, WO2002028186, CN1274530 and WO9522902 disclose and have contained admittedlyBody active component (as Frontline (fipronil) or Imidacloprid (imidacloprid)) and liquid actives are (as efficient chlorine fluorineCyano chrysanthemate or chlopyrifos (chlorpyrifos)) composition, wherein said composition is mixed with the spraying of oil emu, super low loadingAgent, oil in water emulsion, microemulsion, wettable powder, water-dispersible granules, dry suspending agent (drysuspensition),Granule, aqueous pharmaceutical, wettable powder, aerosol, concentrated suspension and missible oil. Although these patents usually disclose agricultureThe various preparations of the combination of medicine active component, comprise water-dispersible granules, concentrated suspension and wettable powder. These patentsDo not provide or instruct preparation this water-dispersible granules composition, concentrated suspension composition and wettable powder compositionMethod. Commercial product based on combinations thereof is not easy with water-dispersible granules composition, concentrated suspension composition and canWP composition obtains. As noted above, for the combination of above pesticide activity component, prepare water-dispersible granules,The standard method of concentrated suspension and wettable powder may not be feasible, and can not provide desirable composition, because such groupCompound does not have the due good dispersion of water-dispersible granules, concentrated suspension and wettable powder, stability, storage lifeLimit and other characteristic. So wettable powder, concentrated suspension and water-dispersible granules are not suitable for lufenuron and efficientThe pre-mixing agent of lambda-cyhalothrin because gamma cyhalothrin due to the low melting point of this active component easily at fine gtinding andIn crushing process, separate out.
Microcapsule formulation can solve the low melting point problem of gamma cyhalothrin, and lufenuron and gamma cyhalothrinPre-mixing agent can be mixed with ZC, it is the mix preparation of gamma cyhalothrin CS and lufenuron SC. But, the cost of said preparationToo high and its production process complexity. This commercial product is not easy to obtain.
Very expect to provide the composition of eco-friendly lufenuron and gamma cyhalothrin; Providing can be in compositionComprising 5% above lufenuron is also useful so that the more composition of efficient to be provided. In addition provide in environment storage requirement (5,DEG C to 50 DEG C) lower stable and in the time of dilution also stable composition be also very important.
Summary of the invention
The present invention now provides novel water-based suspension emulsion (SE) product, its comprise as the lufenuron of suspended solid component andAs the gamma cyhalothrin of emulgate ingredient.
The present invention also provides eco-friendly suspension emulsion composition.
The present invention also provides novel water-based suspension emulsion, and it can comprise suspension emulsion composition, described suspension emulsion compositionCan in said composition, contain more than 5% lufenuron so that more effective to be provided.
The present invention also provides novel water-based suspension emulsion, its show simultaneously height physics and chemistry stability andMobility especially, in the temperature range of-5 DEG C to 54 DEG C, is not wherein observed crystalline polamer and caking after storage.
The present invention also provides novel water-based suspension emulsion, its all performance before and after the temperature range storage of-5 DEG C to 54 DEG CGo out dispersiveness and suspension, wherein after storage, do not observe crystalline polamer.
Therefore, first aspect, the invention provides water-based suspension emulsion, it is characterized in that comprising following component:
(a) disperse oil phase, it comprises:
(i) as the gamma cyhalothrin of the first active component,
(ii) at least one solvent, is wherein dissolved with gamma cyhalothrin;
(b) continuous water, it comprises:
(i) as the lufenuron of the second active component,
(ii) water, is wherein suspended with lufenuron.
Oil phase (component (a)) can comprise one or more of solvents and other additive.
Water (component (b)) also can comprise (iii) one or more of dispersants and other additive continuously.
On the other hand, the invention provides the method for the preparation of aforementioned water-based suspension emulsion, it is characterized in that comprising followingStep:
Step 1: by active component and suitable solvent are prepared to Lambda-Cyhalothrin phase;
Step 2: by the water of active component, dispersant and aequum being mixed to prepare the particle of lufenuron active componentDispersion in continuous water; And
Step 3: the water producing in the oil phase producing in step 1 and step 2 is merged.
Or it comprises the following steps:
Step 1: by active component and suitable solvent are prepared to Lambda-Cyhalothrin phase;
Step 2: the Lambda-Cyhalothrin in step 1 is added in water with high shear, obtains efficient cyhalothrinEster EW phase;
Step 3: by the water of active component, dispersant and aequum is mixed to prepare described lufenuron active component itThe dispersion of particle in continuous water; And
Step 4: the water producing in the oil in water emulsion phase producing in step 2 and step 3 is merged.
The present invention also provides the purposes of above-mentioned suspension emulsion and the method for on the scene processed insect, and it comprises uses this outstanding breastAgent.
Detailed Description Of The Invention
Suspension emulsion (SE) is the combination of a kind of missible oil (EC) of component and the concentrated suspension (SC) of another kind of component. EC phaseIt is the phase that the first active component dissolves in oil. SC is the suspending agent of another active component in water. In the time that the two mixes, willWater is as the continuous phase in emulsion (carrying the oil droplet as the decentralized photo that contains a kind of active component), with another active componentSuspended particulate mixes. Generally speaking, SC and the SE therefore producing comprise other component (for example dispersant) in addition, to help suspensionThe stability of agent and therefore whole system.
First aspect, the invention provides water-based suspension emulsion, it is characterized in that comprising following component:
(a) disperse oil phase, it comprises:
(i) as the gamma cyhalothrin of the first active component,
(ii) at least one solvent, is wherein dissolved with gamma cyhalothrin;
(b) continuous water, it comprises:
(i) as the lufenuron of the second active component,
(ii) water, is wherein suspended with lufenuron.
On the other hand, the invention provides the method for the preparation of aforementioned water-based suspension emulsion, it is characterized in that comprising followingStep:
Step 1: by active component and suitable solvent are prepared to Lambda-Cyhalothrin phase;
Step 2: by the water of active component, dispersant and aequum being mixed to prepare the particle of lufenuron active componentDispersion in continuous water; And
Step 3: the water producing in the oil phase producing in step 1 and step 2 is merged.
Or it comprises the following steps:
Step 1: by active component and suitable solvent are prepared to Lambda-Cyhalothrin phase;
Step 2: the Lambda-Cyhalothrin in step 1 is added in water with high shear, makes efficient cyhalothrinEster EW phase;
Step 3: by the water of active component, dispersant and aequum is mixed to prepare described lufenuron active component itThe dispersion of particle in continuous water; And
Step 4: the water producing in the oil phase producing in step 2 and step 3 is merged.
Suspension emulsion of the present invention can use technology well known by persons skilled in the art to produce in known manner.
Suspension emulsion of the present invention can comprise one or more of solvents in component (a). Applicable solvent has aromatic hydrocarbon, oleic acidMethyl esters, 1-METHYLPYRROLIDONE, propene carbonate, NOP, cyclohexyl-1-pyrrolidones, alkane, different alkaneThe mixture of hydrocarbon and cycloalkane. Applicable solvent can business obtain.
Suspension emulsion of the present invention can comprise one or more of emulsifying agents in component (a). Be included in the present compositionIn applicable emulsifying agent be also known in the art and can business obtain. Applicable emulsifying agent comprises ion and nonionic breastAgent the two, for example fatty acid ester, aliphatic alcohol ester, ether, alkylsulfonate/ester and arylsulphonate/ester. The surface that other is applicableActive emulsifier can be also known to those skilled in the art.
Suspension emulsion of the present invention can comprise one or more of suitable dispersants in component (b). According to of the present inventionSuspension emulsion preferably comprises the mixture of two kinds of different dispersants. Preferred dispersant is following substances:
Methacrylic acid-methyl methacrylate-polyethyleneglycol-graft copolymer, for example, with title4913Those that (from Uniqema) and Tersperse2500 (HuntsmanSurfactant) are commercially available;
Tristyrylphenol ethoxylates (Tristyrylphenolethoxylate), on average has 16 to 60 (preferably16 to 50) individual oxygen ethylene unit; In addition, the tristyrylphenol ethoxylates of sulphation or phosphorylation (on average has 6 to 20(preferably 7 to 16) individual oxygen ethylene unit), and the salt of these materials; Wherein can specifically mention known to title SoprophorFLK (from Rhodia), Soprophor3D33 (from Rhodia) and SoprophorS/40-P (from Rhodia) are commercially availableProduct; And
Expoxy propane/epoxyethane block copolymer (has the polyoxyethylene unit of at least 40 % by mole, center polyoxy thirdAlkene part preferably has 1500 to 2000 molecular weight). For example, can mention with title PluronicPE10100 (fromBASF), PluronicPE10500 (from BASF) and the commercially available product of Pluronic6800 (from BASF). Think above-mentionedSurfactant is that system is brought stability.
Except said components, composition can comprise one or more of other additives as required. Be included in preparationIn additive be known in the art and be commonly used. Can be included in suitable the adding in the suspension emulsion according to the present inventionAdd agent and be all the usual preparation adjuvant using, as defoamer, emulsifying agent, antifreeze, anticorrisive agent, antioxidant, colouring agent,Thickener and inert filler.
Applicable defoamer is included in all substances that conventionally can be used for this object in agrochemical composition. Particularly preferablyDefoamer be the mixture of dimethyl silicone polymer and perfluoroalkyl phosphonic acids, the silicone that for example can obtain from GE or ComptonDefoamer.
Applicable anticorrisive agent is included in all substances that conventionally can be used for this object in this type of agrochemical composition. CanThe suitable example of mentioning comprises(from BayerAG) and(from BayerAG).
Applicable antioxidant is all substances that conventionally can be used for this object in agrochemical composition. Be preferably fourthHydroxy toluene.
Applicable inert filler be included in agrochemical composition, conventionally can be used for this object and do not serve as thickeningThe all substances of agent. Be preferably inorganic particle (for example carbonate, silicates and oxides) and organic substance (for example urea/firstAldehyde condensate). For example, can mention kaolin, rutile, tripoli, tripoli fine powder, silica gel, natural and synthetic silicate andTalcum.
Applicable thickener is included in all substances that conventionally can be used for this object in agrochemical composition. For example xanthanAcid glue, PVOH, cellulose, clay hydration silicate, aluminium-magnesium silicate or its mixture. Moreover such thickener is this areaKnown and can business obtain.
In addition, also comprise according to suspension emulsion of the present invention the water being present in aqueous components (b).
Can in relatively wide scope, change according to the content of each component in suspension emulsion of the present invention. Therefore, can depositThe concentration of component conventionally as follows:
Be generally by weight 1% to 40% from the reactive compound of the group (i) of (a), be preferably by weight 5% to20%;
Be generally by weight 1% to 40% from the reactive compound of the group (i) of (b), be preferably by weight 5% to20%;
Be generally by weight 1% to 30% from the solvent of the group (ii) of (a), be preferably by weight 5% to 20%;
From the group (ii) of (b) according to the present invention in suspension emulsion water content can on a large scale, change.
Determine according to other component, water content is generally by weight 25% to 80%;
Be generally by weight 1% to 10% from the dispersant of the group (iii) of (b), be preferably by weight 1% to5%;
Can use any applicable method preparation according to suspension emulsion of the present invention. Preferred preparation preferably passes through with dirtyJourney preparation:
Step 1: by active component is mixed to prepare Lambda-Cyhalothrin with solvent together with suitable emulsifying agentPhase;
Step 2: by the water of active component, dispersant and aequum being mixed to prepare the particle of lufenuron active componentDispersion in continuous water;
By active component lufenuron for example, together with applicable dispersant and other additive (antifreeze and defoamer) andThe water of aequum tentatively mixes, and usage level agitation beads grinding machine fine gtinding is to maintain technological parameter, for example, remain flatAll particle diameter d50 is no more than 3 microns and nearly all particle d90 and is no more than 6 microns.
Step 3: the water producing in the EC producing in step 1 being added to step 2 under the stirring that continues Best Times amountXiang Zhong.
Step 4: previously prepared good thickener (as polysaccharide or xanthan gum), makes its aquation and be ready for as stepIn rapid 5 subsequent steps of mentioning, add.
Step 5: appropriate thickener (as the glue in step 4 (gum)) is added in the mixture in step 3 and continues to stirMix, until mixture becomes uniform suspending agent.
Preferred preparation is also preferably prepared by following flow process:
Step 1: by active component is mixed to prepare Lambda-Cyhalothrin with solvent together with suitable emulsifying agentPhase;
Step 2: the Lambda-Cyhalothrin in step 1 is added in water with high shear, obtains efficient cyhalothrinEster EW phase;
Step 3: by the water of active component, dispersant and aequum being mixed to prepare the particle of lufenuron active componentDispersion in continuous water;
By active component lufenuron for example, together with suitable dispersant and other additive (antifreeze and defoamer) andThe water of aequum tentatively mixes, and usage level agitation beads grinding machine fine gtinding is to maintain technological parameter, for example, remain flatAll particle diameter d50 is no more than 3 microns and nearly all particle d90 and is no more than 6 microns.
Step 4: produce in the oil in water emulsion producing in step 2 being added to step 3 under the stirring that continues Best Times amountIn raw water.
Step 5: previously prepared good thickener (as polysaccharide or xanthan gum), makes its aquation and be ready in conductIn the subsequent step that step 6 is mentioned, add.
The 6th step: appropriate thickener (as the glue in step 5) is added in the mixture in step 4 and continued and stir, untilMixture becomes uniform suspending agent.
The low tempertaure storage stability of 7 days is placed in test suspension agent at-5 DEG C, places the high temperature storage of 14 days at 54 DEG CStability, and at 30 DEG C, dilute the stability of latter 24 hours.
Suspension emulsion according to the present invention is such preparation, even if it still keeps stable after high temperature or freezing lower storage,Do not observe crystalline growth. After dilute with water, they are convertible into even spraying liquid, and do not find because the activity of spray liquid becomesPoint crystallization and the nozzle blockage that causes. These spray liquids are applicable to using by conventional method (as sprayed or pouring into).
The rate of application excursion of the suspension emulsion according to the present invention is wider, and concentration depends on the amount of active component in compositionWith draft purposes, it can be determined by those of skill in the art.
On the other hand, the invention provides the method for Control pests in place (particularly insect), the method comprise toThe above-mentioned preparation of effective dose is used in this place.
In addition, the present invention also provides the purposes of above-mentioned concentrate formulation Control pests in place.
These suspension emulsions of the present invention have all represented the physical and chemical stability of improvement in most cases, especiallyIn-5 ° to 54 DEG C temperature ranges, lay up period is not observed crystalline polamer. Said preparation or eco-friendly.
The advantage of preparation of the present invention is, can use the stability of pesticide formulation of viable commercial concentration, and without any aobviousOutstanding or harmful crystallization forms.
Compared with commercially available E.C., preparation of the present invention demonstrates low phytotoxicity.
Suspension emulsion preparation of the present invention is nonflammable, dermal toxicity is low and skin irritation is low advantage in addition.
Finally, suspension emulsion preparation of the present invention can be considered to be on ecological toxicity safety, because they are by safety and basicThe composition preparation of inertia. Result is not only useful preparation, and preparation also meets the tight of U.S. EPA (State Bueau of Environmental Protection)Lattice require and the European standard of controlling VOC.
Although will describe the present invention in conjunction with some preferred embodiment in following examples, should be appreciated that it alsoBe not intended to limit the invention to these specific embodiments. On the contrary, it be intended to contain can be included in by appended right wantAsk all replacement schemes, amendment and equivalent in the present invention's the scope that book limits. Therefore, (it comprises excellent following examplesThe embodiment of choosing) will be used for illustrating enforcement of the present invention, details shown in being to be understood that is for for example and only for exampleProperty the present invention's preferred embodiment is discussed, propose these embodiment and be considered to the most useful and hold intelligible pass most to provideIn the description of method and principle of the present invention and concept aspect.
Preparation Example