JPS6168108A - Foam-breaking wetting vehicle - Google Patents

Abstract

PURPOSE:To obtain the title foam-breaking wetting vehicle having an excellent effect on breaking or inhibiting foam generated when agricultural chemicals are diluted and regulated by using a compd. obtained by adding alkylene oxide to alkylphosphoric ester. CONSTITUTION:One or more kind of compd. selected from a group of compds. expressed by formulas I and II is used as the essential component. The foam- breaking wetting vehicle alone or the vehicle combined with a conventional lean foam-breaking vehicle exhibits excellent foam breaking and inhibiting effect. When the vehicle is used at >=0.5ppm concn., the effect can be obtained, and the damage to crops is not recognized even when the vehicle is used at 1,000ppm concn. Besides, agricultural chemicals are used in the form of emulsion, a flowable agent, wettable powder, granular wettable powder, and a water-soluble agent and the effect can be obtained even when the mixture of said agents is used.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a foam-breaking wetting agent, and more particularly to a diluting agent for agrochemical formulations! A foam-breaking wetting agent is used to break and eliminate the foaming of 1&, which is generated in large quantities during the production of Ml or when spraying the diluted solution of Fi pesticide preparations.

[Conventional technology and its problems]

Conventionally, when spraying pesticide formulations, a large amount of water, i.e. 1
Spray diluted at oOA/ha. How to spray
J! It depends on the AITO product, but when spraying over a wide area, a speed sprayer or sprinkler is used, and when spraying on a relatively small area, a shoulder spreader or hand spreader is used, but in either case. A large amount of air bubbles are generated. The generation of a large amount of air bubbles is caused by the use of various dispersants, emulsifiers, and wetting agents in pesticide formulations. Air bubbles form. If a large amount of foam is generated during drug preparation, the level of the diluted liquid cannot be confirmed and the dilution amount may be incorrect, resulting in problems such as chemical damage and insufficient control efficacy. Also, when spraying, there are problems such as the formation of a single spot in the sprayer (1), and the amount of water sprayed is not enough due to the foam, making it impossible to spray uniformly.

For this reason, low-foaming spreading agents have been used to suppress foam and reduce surface tension, but although this reduces the surface tension of the diluted solution and creates a moist layer effect on the plant, it is not effective in suppressing foam. Nothing sufficiently effective has yet been put into practical use.

C. Means for Solving the Problems] As a result of extensive research, the present inventors have found that the specific compounds described later can be used to break or inhibit foam generated during dilution preparation, regardless of the type of agricultural chemical formulation. The present invention has been completed based on the discovery that it has an excellent effect in improving the properties of the product and also imparts wet malleability.

That is, the present invention provides a foam-breaking wetting agent which contains as an essential component one or more flIi selected from the group of compounds represented by the following general formulas (II) and (II).

(Formula (II) or Fi<summer), R has 2 to 2 carbon atoms
0 alkyl or alkenyl group, A has 2 carbon atoms
~4 alkylene group, m and n are numbers from 0 to 50, and m + n = 1 to 50.

) The compound according to the present invention can be easily obtained by a known method, such as a method in which an alcohol is reacted with phosphorus pentoxide and an alkylene oxide is added thereto. The starting material alcohol is an alcohol having a straight chain or branched chain alkyl group (or alkenyl group) having 2 to 20 carbon atoms.
), may have a hydroxyl group in the alkyl (or alkenyl) chain. Preferably, carbon number is 4 to
It is an alcohol having 18 alkyl (or alkenyl) groups. Examples include butanol, 2-ethylhextenol, diuryl alcohol, stearyl alcohol, oleyl alcohol, and the like.

There are various methods for phosphorylating alcohol, but for example, 71 mol of pentoxide is added to 3 mol of alcohol.
A fluoric acid ester can be easily obtained by reacting at ~100C for about 6 hours. The alkyl phosphate ester obtained in this case is an approximately isocytotic compound of monoester and diester.

Examples of the alkylene oxide added to the alkyl phosphate ester include ethylene oxide, propylene oxide, and butylene oxide. These may be a single block, two or more types of blocks, or randomly added blocks. The number of moles added is 1 to 50 moles, preferably 1 to 50 moles.

The addition reaction can be carried out by a known method, for example, by introducing and reacting alkylene oxide at 50 to 200 C11 to 5 kp/i in the presence of an acid or alkali catalyst.

A specific example of the compound represented by the general formula (!;
OIC (II0) oleyl phosphate monoester), POEdl stearyl phosphate monoester, POE (2) butyl phosphate monoester, p
ogαI POP (21 octyl phosphate sesquiester (POP is an abbreviation for polyoxypropylene, the same applies hereinafter),
POE (8) Lauryl phosphate sesquiester, POE
(il lauryl phosphate monoester, POK al 7
F uryl dizxyl phosphate, POIC(II POP(
2) Stearyl phosphate monoester, POE (81 stearyl phosphate sesquiester, POE (9) 2-
Examples include ethylhexyl phosphate sesquiester.

In carrying out the present invention, the foam-breaking and wetting agent of the present invention may be used in combination with a conventional low-foaming spreading agent, or even if the foam-breaking and wetting agent of the present invention is used alone. Shows foam and foam suppression effect.

That is, the product of the present invention may be formulated in a low-foaming spreading agent.

Agrochemical formulation types showing the effect of the foam-breaking wetting agent of the present invention are emulsion,
Flowable agents, irrigation agents, granular irrigation agents, water-solvents, etc.
A similar effect is obtained when these are used in combination. The same applies even if the product of the present invention is formulated into a preparation.

The foam-breaking and wetting agent of the present invention exhibits its effect at a Ra degree of 0.5 ppm or more, but it is preferably used at a Df of 2 ppm or more. ), an example of a high concentration is suOppm or 1
No phytotoxicity to crops was observed even when used at 000ppII+.

There are no particular limitations on the target biocide for the foam-breaking humectant of the present invention,
For example, in the case of insecticides, pyrethroid insecticides have 7
Embererate (α-cyano-5-phenoxybenzyl-2-(4-chlorophenyl)-3-methylvalerate), Bithroid (cyano(4-fluoro-3-phenoxyphenyl)methyl-3-(2,2- -2,2-dimethylcyclopropane (dichloroethynyl) -2,2-dimethylcyclopropane rupoxylate), DDV'P (
2,2-dichlorovinyldimethylphos 7 :r:, -
)), Sumithion (dimethyl-4-nitro m-tolyl-phosphorothionate), Marathon (S-(+,
2-bis(ethoxycarbonyl)ethyl dimethyl phosphorothiolthionate), dimethoate (dimethyl 5
-(N-methylcarbamoylmethyl)phosphorothiolthionate), Konisan (S-[α-(ethoxycarbonyl)benzylcodimethylphosphorothiolthionate), Pysit (0,0-dimethyl-〇-(3 -Methyl-4-methylmercaptophenylthiophosphate) L
Examples of car/<mate insecticides include Bassa (0-butylphenylmethylcarbamate), MTMC (m-tolylmethylcarbamate), Meopal (3,4-dimethylphenyl-N-methylcarbamate), and NAG (I
I-naphthyl-N-methyl-carbamate), also methomyl (methyl-N[(methylcarbamoyl)oxycothioacetimide), cartap (II,6-bis(carbamoylthio)-2-(N,N-dimethyl) (amino) propane hydrochloride), etc.

For example, in the case of acaricides, sumite (2-(2-p-
tart-butylphenoxy)inpropoxy]inglovir-2-chloroethyl sulfide), acridide (2,4-dinitro-6-secondary-butylphenyldimethylacryleate), chlormite (isopropyl-4,4-dichlorobenzyl ether) ), 7 curls (
ethyl-4,4-dichloropendyleate), Kelsene (II,1-bisCp-10ruphenyl)-2,2,2
-trichloroethanol), citrazine (ethyl-〇-
benzoyl-3-chloro-2,6-simethoxypenzohydroxymate).

Examples include brictran (triciftetrahexyltine hydroxide), omito (2-(p-tartbutylphenoxy)-cyclohexyl-2-propynylsulfite), and the like.

For example, in the case of fungicides, organic sulfur fungicides include Daisen (zinc ethylene bisdithiocarbamate), Mannef (manganese ethylene bisdithiocarbamate), Thiuram (bis(dimethylthiocarbamoyl) dioxide), and Nipenleate (methyl-1 -(7'tylcarbamoyl)-2-penzimidazole carbameate)
, difortan (N-tetrachloroethylthio-4-cyclohexane-1,2-dicarboximide), daconyl (tetrachloroisophthalonitriyl), pansoyl (5-ethoxy-3-tricquarylmethyl-1.2.4)
-thiadiazole), thiophanate methyl (II,2
-bis(3-methoxycarbonyl-2-thioureido)benzene), labside (4,5,6,7-titrachlorphthaloid), kitazine p (o,o-diisopropyl-8-benzylphosphorothioate), hinosan (
0-ethyl-8,S-diphenyl ditheophosphate)
, Puapenazole (5-7 Ryloxy 1,2-benzothiazole-1,1-dioxide), etc. ◇ For example, in the case of a deceleration agent, Stam (3,4-dichloropropionanilide), Sata-y (S-(4-chlorobenzyl) -N,N-diethylthiol carbamate), Labusso (2-chloro-2',6'-diethyl-N-(methoxymethyl)acetanilide), -Glyquocet (N-( phosphonomethyl)glycine isoglobylamine salt), DCjLIU (5-(3,4-dichlorophenyl)-1,+-dimethylurea), gramoxone (L
+'-dimethyl-4,4'-diviridium dichloride).

For example, in the case of a plant growth regulator, Mr ((maleic acid hydrazide)), Ethrel (2-chloroethylphosphonic acid), etc. may be mentioned.

〔Example〕

Next, the present invention will be explained with reference to examples, but the present invention is not limited to these examples.Example 1 Commercially available herbicides Carmex wettable powder, paraquat liquid,
Roundup liquid commercially available fungicide Topsyn M hydrating agent, Daifer hydrating agent, Ortolan Iruri Tfishin's insecticide Sumithion hydrating agent, Bassa emulsion of the present invention at 1 ppm, 1 Oppm, 10
0 ppm diluent was used to dilute to the commonly used concentration, 1000 m/min of the diluted solution was released and circulated for 10 minutes from a height of 50 crn using a gear pump with a displacement of 44 per minute, and then The height of the foam was measured. Tables 1 and 2 show urination. The height of the bubbles was measured from the liquid surface to the tip using a sennameter.

■ Polyoxyethylene (II1 oleyl phosphate ester ■ Polyoxyethylene x polyoxypropylene (2)
2-Ethylhexyl phosphate ester ■ Polyoxyethylene (2) butyl phosphate ester Example 2 Next, in order to investigate the performance evaluation of wet malleability, 8 industrial soybeans were
A 1000-fold diluted solution of Sumithion 50% emulsion was sprayed in 2017. The concentration of the compound of the present invention in the spray liquid was 10 ppm. As a control, a diluted solution of a commercially available low-foam spreading agent was prepared to be 5000 times diluted. The amount of adhesion on the leaves of Sumithion was measured using the gas chromatography method.

Compounds of the present invention ■ Polyoxyethylene a1 oleyl phosphate ■ Polyoxyethylene α [Polyoxypropylene 7 (
21n-octyl phosphoric acid ester ■ Polyoxyethylene (2) butyl phosphoric acid ester The results above showed that the amount of adhesion to the soybean leaf surface was also better than that of commercially available spreading agents, and the compound of the present invention did not contain any commercially available spreading agents or additives. It was clearly superior to other products, and it also showed sufficient efficacy in terms of wet malleability.

Claims (1)

[Claims] 1. A foam-breaking and wetting agent containing one or more compounds selected from the group of compounds represented by formulas (I) and (II) as essential components. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II) (In formula (I) or (II), R has 2 to 20 carbon atoms.
represents an alkyl or alkenyl group, and A has 2 to 2 carbon atoms.
4, m and n are numbers from 0 to 50, and m+n=1 to 50. )