DE2506834A1 - HERBICIDE MASS - Google Patents

Description

Patent attorneys:

Dipl.-Ing. Tiedtke Dipi.-Chem. Bühling Dipl.-Ing. Chins

8 Munich 2

Bavariaring 4, PO Box 202403

Tel .: (089) 539653-56 Telex: 524845tipat cable address: Germaniapatent Munich

Munich, February 18, 1975 B 6444 / ICI case PP.26803

Imperial Chemical Industries Ltd
London, UK

Herbicide masses

The invention relates to herbicidal compositions.

Herbicidal masses from a finely divided insoluble solid herbicide, which in an aqueous, a surface-active Agent-containing solution of a herbicidal quaternary bipyridylium salt is dispersed, are described in GB-PS 1,088,981. ben. An example of such a commercially available mass is a dispersion of diuron (N, 3,4, -dichlorophenyl-ITN · -dime ethyl urea) in an aqueous paraquat dichloride solution with a content of non-ionic, surface-active

ι I

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Agents sold under the brand name Pluronic P75 (nonionics made from polyoxypropylene glycol) is available. A problem encountered with such masses is that the particles of the dispersed solid herbicids tend to settle at the bottom of the container and agglomerate when the mass is stored, especially when stored at higher temperatures prevailing in tropical regions, this behavior is described in the following Called "silting". The silted material is difficult to redisperse by stirring by hand. Another with some Difficulty encountered in the masses is flocculation of the dispersed herbicide particles, i.e. a number of particles in stock together. and forms loose aggregates, hereinafter referred to as "flokken" to be named. Redispersing these flakes by hand stirring is also difficult. From the physico-chemical From the point of view, these dispersions of solids in electrolyte solutions are complex systems whose behavior is very difficult to if not impossible to predict. After considerable research and experimentation, it has now been found that there are masses with a lower tendency to sludge or flake formation through the use of a certain group of cationic surfactants Receives means in combination with an amphiphilic compound.

According to the invention, a herbicidal mass with improved storage properties is created, which consists of a solid, in an aqueous solution of a herbicidal quaternary Bipyridiliumaalzes dispersed herbicide with a medium particle size

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size up to 50 u and a dispersant, the Dispersant contains (B) an amphiphilic compound and (A) a cationic surfactant containing 1. an auaternary ammonium salt of the formula

R.

or

wherein R. and R ₁ - aliphatic, preferably alkyl groups * with 8 to 18 carbon atoms, preferably with a chain length of more than C ₁₀ or mixtures of such groups, R ^ »R ^ and R ^ aliphatic groups, preferably alkyl, with less as 8 carbon atoms Rp a benzyl group and X an anion, preferably a halide,

can be, or. .

2. a quaternary salt of the formula

CrI.

Ti ..

- J-;

(CH ₂ ) η

R.

- N

-CH,

CH ₇

2 X

where R ^ and X ~ are as defined in 1 above and η is a whole Number from 2 to 4 inclusive, or 3. a quaternary salt of the formula

50983 /, / 0993

CJJ ₀ CO II

C Λ

(CK ₂ -CII ₂ O) H

^R i

CLL

egg:

, (CH., -CHO), ..H

C- Λ

'• (Clip-CHO) K

cn

wherein R ^ and X ~ are as defined above under 1 and χ and y each is an integer from 2 to 23 inclusive, or 4. a quaternary salt of the formula

U-.

wherein Rg is an aliphatic group, preferably alkyl, with 8 to C atoms and X is an anion, preferably a halide, or 5 · a quaternary salt of the formula

iscCi.IJ

6 "5

CH

wherein X is an anion, preferably a halide.

509834/0993

Araphiphilic compounds are compounds that one water-soluble and one non-water-soluble group of a size sufficient to make the molecule as a whole hydrophobic To give properties. Amphiphilic compounds are available, for example, from A.S.C. Lawrence in Chemistry and Industry, 1961, at p 765. Preferred classes of amphiphilic compounds are the following:

1. Aliphatic alcohols or ethoxylated aliphatic alcohols of the formula Rr ₇ OH or

₇ pGHpO) ₂ OH, where R _{7 is} an aliphatic group, preferably an alkyl or alkenyl group with 8 to 18 carbon atoms. The group R ₇ can be branched and contain a phenyl group. The symbol ζ stands for a number less than 10. 2. A compound of the formula R. -.A, where R. ^ is an aliphatic radical with 8 to 18 carbon atoms and A

a -NH ₂ , -CO ₂ H, -CONH ₂ , -NHCH ₂ CO ₂ H, -

CH?
⁰ / \ "

^ RIi ₁ N CH ₂

, or

^ R 15
-Group is.

The groups R ^ and R ^ ₁ - are alkyl groups with 1 to 14 carbon atoms or hydroxyethyl groups.

The amount of dispersant used in the mass depends on the particular herbicidal ingredients chosen, but is usually 10 to 100 g per liter of

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Dimensions. The ratio of the cationic surfactant (A) to the amphiphilic compound (B) in the dispersing agent can be varied depending upon the particular selected herbicidal ingredients, but generally preference is given to a ratio of 10: 1 to 10: 5 · I ⁿ general the content of amphiphilic compound in the dispersant should be greater than 10% by weight.

Preferred herbicidal quaternary bipyridylium salts have the following formulas:

n-

--- Q η

in which P and Q, which can be the same or different, represent alkyl radicals with 1 to 4 carbon atoms which can be substituted by hydroxyl, halogen, carboxyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, carbamoyl or N-substituted carbamoyl and X ⁿ ~ is an anion and η is 1, 2, 3, or 4.

Particularly preferred herbicidal quaternary bipyridylium salts are the ones listed below:

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^1, 1 '-A'thylen-2 ^, -bipyridyliumdibromid (diquat dibromide) *, 1'-dimethyl-4,4'-bipyridyliumdichlorid (paraquat dichloride) 1,1' -M-2-hydroxyethyl-4,4 '-bipyridyliumdichlorid 1,1 '-Bis - ^^ - diinethylmorpholinokarbonylmethyl - ^, ^' -bipyridyliumdichlorid (Ilorfamquatdi chlorid)

1- (2-hydroxyethyl) -1'-methyl-4,4'-bipyridylium dichloride 1,1 '-di-carbamoylmethyl-4,4'-bipyridylium dichloride 1,1' -Bis- ^ N-dinethylkarbamoylmethyl ^^ ¹ -bipyridylium dichloride 1, 1 '-Bis-I ^ N-diethylkarbamoylmethyl ^^' -bipyridyliumdichlorid 1,1 '-Di- (piperidinokarbon.ylmethyl) -4,4'-bipyridyliumdichlorid 1,1'-niazetonyl-4,4'-bipyridyliumdichlorid 1, 1'-Diethoxycarbonylmethyl-4,4'-bipyridylium dibromide.

The hats in brackets for some of the compounds in the list above are recognized, common names for the cationic portion of these compounds. "Paraquat" is the usual name for the 1,1'-dimethyl-4,4'-bipyridylium cation. Paraquat is a bipyridylium compound which is particularly preferred for use in the compositions according to the invention. An anion particularly preferred for practical and economic reasons ~ is the chloride, but it may be ¹ IIs any anion used gewünschtenf- which gives a convenient water-soluble salt. the on in the inventive Hate forehand "Kenge to herbicidem quaternary bipyridylium is preferably 100 to 250 g per liter, calculated on the Base of the cation.

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Examples of used in the compositions of the invention Herbicides are urea herbicides, triazine herbicides and uracil herbicides. Specific examples of these herbicides are the following:

Urea herbicides Triazine herbicides

Monuron. Simazine

Diuron atrazine

Neburon Ametryn

Fluometuron uracil herbicide

Monolinuron bromacil

Linuron. Lenacil

Terbacil

The herbicidal compositions according to the invention can be prepared in various ways. For example, the cationic surfactant (A) can be dissolved in water first and the amphiphilic compound (B) can be dissolved in the resulting solution by heating. The solid herbicide in powder form can then be dispersed in the solution thus obtained by vigorous stirring. As an alternative, the mixture of ingredients (A) and (B) with the solid herbicide "can be heated to form a liquid mixture which can then be dispersed in water by vigorous stirring. This latter method is for solids Herbicides with a low melting point (ie a melting point of about 10O ⁰ C or below) are particularly preferred. After dispersing in water, the liquid mixture is cooled and the mass then represents

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a dispersion of solid particles. Regardless of the method used to disperse the solid herbicide in an aqueous medium containing the dispersant, the initially obtained dispersion may be subjected to milling to reduce the particle size and make a finely divided dispersion. The particle size is preferred reduced to less than 50 u, and even more favorably to a size range of 0.1 to 10 u. The grinding consists in that. one the. Stir dispersion with glass or ceramic balls according to the methods known in the preparation of pesticides. The finely divided dispersion thus obtained can then be mixed with a solution of a herbicidal quaternary bipyridylium salt. In another process for the preparation of the compositions according to the invention, the dispersant is heated from the mixture of constituents (A) and (B) with the solid herbicide; the melted mixture is then dispersed directly in an aqueous solution of herbicidem quaternary "bipyridylium with vigorous stirring. This method is particularly useful in low-melting solid herbicides. When the herbicide has a melting point of less than 100 ⁰ C, the whole operation can comfortably in a The solid herbicide, dispersant, and herbicidal bipyridylium salt solution are heated together until the solid herbicide melts, and the mixture is stirred vigorously to disperse the molten herbicide, and the mixture is cooled with stirring so that the Droplets of the herbicide become solid. The dispersion obtained in this way can be used directly or subjected to ball milling in order to

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as mentioned above, to further reduce the size of the particles.

Another method is that the powdery, remaining herbicide in an aqueous solution of the
cationic, surfactant component (A) dispersed in the dispersant and the mixture for the purpose of reducing the
Grind particle size below .50 microns before combining it with the amphiphilic compound. A preferred method is to prepare a dispersion of the solid herbicide in water by milling with a milling aid, that is, a surfactant which is particularly useful in facilitating the breaking down and dispersion of the particles by the milling process. The dispersant consisting of the cationic surfactant (A) and the amphiphilic compound (B) can then be used for the purpose of stabilizing the mixture before or after
Addition of the herbicidal quaternary bipyridylium salt added
will. Surfactants preferred as grinding aids have the following formulas:

) (o: _t .cH _£ o) _K ·. · r ₁₂ cokH (ch ₂ ch ₂ o) _w h

MI CU ₂ . X (ClI ₂ CiI ₂ O) jj

H ₂ CH ₂ O) _W

(CH ₂ CH ₂ O)

509834/0993 ^BAD

COPY

where β ^ 2 is an aliphatic group, preferably an alkyl group with 8 to 18 carbon atoms, w is a number from 5 to 50 and p + q is a number from 5 to 50. Other surface-active agents which can be used as grinding aids are sorbitan fatty acid esters and their ethoxylated derivatives, which are available under the trade names "Span" and "Tween". ¹ The alkyl group of the nonionic * grinding aid is in each case preferably shorter than the chain length of the cationic surfactant (A) so that the grinding aid from the surface of the particles of the solid herbicide in the dispersion by a cationic surfactant. Means is displaced. A nonionic polymer, for example the polyethylene oxide-polypropylene oxide block copolymer, available under the trade name "Pluronic", or polyvinyl alcohol, can also be used as a grinding aid. The amount of grinding aid used is preferably 5 to 100 g per liter of the finished mass.

Milling the solid herbicide with a milling aid and then adding the cationic surfactant By means of and the amphiphilic compound is preferred as a method, since the mass tends to gel when man tried a mixture of the solid herbicide with the mixture of cationic surfactant and amphiphilic compound to grind directly, especially if you have the temperature the mixture increases.

The compositions according to the invention can, if desired, also e.in Means to prevent settling. Included. This can be a

BATH ORIGINAL

509834/0993

COPY

be a cationic surfactant of the following formula:

-N
R.

IO

where Rg and Rq are aliphatic groups, preferably alkyl groups, with 8 to 18 carbon atoms. R. _Q and R ^. are aliphatic groups, preferably alkyl groups, with fewer than 8 carbon atoms and X ~ is an anion, preferably a halide anion. Other examples of anti-settling agents are those sold under the following trade names: "Santocel" 54 "Kelzan" DO

"Carbopol" 934 "Alcotex" 88/10

"Polyvinylpyrrolidone / nBentopharm" "Hydral"

Compositions according to the invention have proven to be more durable on storage than the previously known compositions based on nonionic surface-active agents. Certain formulations have been found which hold up satisfactorily ^{at temperatures between 0} and 50 ^{° C. for at least 6 months.}

The invention is illustrated by the following examples.

example 1

This example illustrates compositions according to the invention which are composed of diuron dispersed in a paraquat dichloride solution

509834/0993

exist. The components of the masses are as follows:

Ingredient Quantity (g)

Diuron 20

Paraquation. 20 Arquad 16/50 or Arquad 18/50 4.1 cetyl alcohol, stearyl alcohol. or Cetostearyl alcohol 0.41

Arquad 2 C 75 2.0

Water up to 100 ml

'Cetos tearyl alcohol is the common name for a commercially available one Mixture of cetyl and stearyl alcohol.

Example 2

This example illustrates compositions according to the invention which consist of simazine dispersed in a paraquat chloride solution. The components of the masses are as follows:

component lot Simazine 15th Paraquation 10 Arquad 16/50 or Arquad 18/50 3.0 Cet: alcohol, Ce fcosteary alcohol or stearyl alcohol 0.3 Arquad 2 C 75 '2.0 Vasser up to 100 ml

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Example 5

This example illustrates compositions according to the invention which are composed of monolinuron dispersed in a paraquat dichloride solution exist. The components of the masses are as follows:

component Example 4 Amount (g) Monolinuron 14th Paraquation 10 Arquad 16/50 or Arquad 18/50 2.8 Cetyl alcohol, stearyl alcohol, 0.28 or cetostearyl alcohol Arquad 2 C 75 2.0 Water up to 100 ml

This example illustrates compositions according to the invention which are composed of atrazine dispersed in a paraquat dichloride solution exist. The components of the masses are as follows:

component Amount (g) Atrazine 20th Paraquation 2o Arquad 16/50 or Arquad 18/50 4.1 Cetyl alcohol, stearyl alcohol 0.41 or cetostearyl alcohol Arquat 2 C 75 2.0 Water up to 100 ml

509834/0993

Example 5

This example explains masses according to the invention, that of terbacil dispersed in a paraquat dichloride solution exist. The components of the masses are as follows:

component Example 6 Amount (g) Terbacil 20th Paraquation 20th Arquad 16/50 or Arquad 18/50 4.1 Cetyl alcohol or stear alcohol 0.41 or cetostearyl alcohol Arquat 2 C 75 2.0 Water up to 100 ml

This example illustrates compositions according to the invention which are composed of simazine dispersed in a paraquat dichloride solution exist. The components of the masses are as follows:

(a) Constituent . Amount (g)

Simazine 20

Paraquation 20

Arquat 12/50 4.1

Dodecanol 0.41

Water up to 100 ml

509834/0993

- 16 -

Paraquation '20

Ar quad -12/50. '4.1

Dodecanol 0.41

Arquad. 2 C 75 2.0

Water up to 100ml

Example 7

This example illustrates compositions according to the invention which are composed of simazine dispersed in a paraquat dichloride solution exist.

(ä) component quantity Ck)

Simazine 20

Paraquation .20

Arquad 12/50 4.1

Synperonic B113 0.41

Water up to 100 ml

(b) simazine. 20th

Paraquation '20

Arquad 12/50 4.1

Synperonic B113 0.41

Arquad 2 G 75 2.0

Water up to 100 ml

509834/0993

This example explains. Masses according to the invention, which consist of atrazine dispersed in a morfamquat solution.

(a) Component Amount (g) Atrazine 20

Morfamquat 20

Arquad 16/50 4.1

Hexadecanol 0.41

Water up to 100 ml

(b) Atrazine 20 Morfamquat 20 Ατ-quad 16/50 4.1 Hexadecanol 0.41 Arquad 2 C 75 2.0 water up to 100 ml

Example 9

This example illustrates compositions according to the invention which are composed of simazine dispersed in a paraquat dichloride solution exist.

Ingredient Quantity (g )

Simazine 15

Paraquat 10

Decyltrimethylammonium bromide 1.5

Decanol 0.30

Arquad 2 C 75 4.4

Water up to 100 ml

509834/0993

- 18 - ■

This example explains a mass according to the invention, which consists of simazine dispersed in paraquat dichloride.

Component . Amount (g)

Simazine 20

Paraquat. 20th

Duoquad T 50 4.1

Cetostearyl alcohol 0.41

Arquad 2 C 75 2.0

Water up to 100 ml

Example 11 . ·

This example explains a cash register according to the invention, which consists of simazine dispersed in paraquat dichloride.

Ingredient Quantity (g )

Simazine 20

Paraquat 20

Hyamin 1,622 ■ 2.1

Cetostearyl alcohol 0.41

Arquad 2 C 75 2.0

Water up to 100 ml

Example 12

This example illustrates a composition according to the invention which consists of simazine dispersed in morfamquat dichloride.

509834/0993

Simazin '20

FiOrfamquat 20

Arquad 16/50 4.1

Stearic acid 0.41

Arquad 2 C 75 2.0 "

Water up to "100 ml

Example 13

This example explains a mass according to the invention, which consists of simazine "dispersed in paraquat dichloride.

Ingredient , amount (g) simazine 20

Paraquat 20

Arquad 16/50 4.1

Armies HT .0.41

Arquad 2 G 75 2.0

t water up to - 100 ml

Example 14

This example explains a mass according to the invention, which consists of diuron dispersed in diquat dichloride.

Ingredient Amount (g) Diuron 20

Diquat 14

Ethoquad 18/25 2.1

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Cetostearyl alcohol 'ο, 41 2506834

Ar quad 2 C 75 '. 2.0

Water up to 100 ml

Example 15

This example illustrates a hatch according to the invention which consists of diuron dispersed in paraquat dichloride.

Ingredient Quantity (g)

Diuron 20

Paraquat 20

Arquad 16/50. 4.1

Crodateric G 0.41

. Arquad 2 C 75 2.0

Water up to 100 ml

Example 16

This example illustrates a composition according to the invention which consists of diuron dispersed in paraquat dichloride.

Component . Amount (g)

Diuron 20

Paraquat 20

Arquad 16/50 ■ 4.1

Armid HT 0.41

Arquad 2 C 75. 2.0

Water up to 100 ml

509834/0993

This is followed by a list of the var names appearing in the description with the chemical composition of the through the trade names characterize substances.

"Alcotex" "Carbopol"

"Hydral" "Kelzan" "Bentopharm" "Santocel" "Arquad" 16/50

"Arquad" 12/50

"Arquad" 18/50 polyvinyl alcohol 1

A vinyl copolymer with carbon. xyl groups

Finely divided aluminum oxide Xsηthane rubber

Pharmaceutical grade bentonite Finely divided silicon dioxide A mixture of quaternary ammonium salts consisting primarily of hexadecyltrimethylammonium chloride (90%) with small ones Amounts of octadecyl (6%) and octadecenyltrimethylammonium chloride (4%)., The is available as a solution in water / isopropanol

A mixture of quaternary ammonium salts, consisting mainly of dodecyltrimethylammonium chloride (90%) with tetradecyltrimethylammonium chloride (9%), the is available as a solution in water / isopropanol.

A mixture of quaternary ammonium salts consisting mainly of octadecyltrimethylammonium chloride (93%) with hexadecyltrimethylammonium chloride (6%) and octadecenyltrimethylammonium chloride

(1%), which is a solution in water / isopro-

509834/0993

Ethoquad 18/25

Crodoteric C

panol is available.

A mixture of quaternary salts of the following formula:

OH.

(CH ₂ CH ₂ O) _x H.

(CH ₂ CH ₂ O) _y II

wherein the sum of χ and y is 15 and R is a stearyl group. A mixture of compounds of the following formula:

CH,

.Il

R C

CH.

Hyarain 1,622

where R is the mixture of the aliphatic acids present in the fatty acids of coconut oil Means leftovers. A .quaternary salt of the formula:

/ ^r ~ \ · (CHJ ₇ C CH ₀ C (.CH,) ·.; (/. WO (CII ₀ ) O

C ₆ H ₃ CH ₂ IT (CH _{2) 2}

Armies HT

A mixture of primary amines of the formula RNHp, where R is a mixture of the hydrogenated in

509834/0993

Amide HT

Synperonic B113 Arquad 2 G 75

Buoquad T50

ten tallow acids present aliphatic residues, mainly stearyl (60%) and palmityl (30%). A mixture of amides of the formula RCOM ₂ derived from hydrogenated tallow fatty acids, which mainly consists of octadecanamide (71%) and hexadecanamide (22%).

A condensate of ethylene oxide with η undecanol based on petroleum in a molar ratio 3 to 1.

A mixture of quaternary salts of the formula Fr —N (CH,) ₂ —R? ⁺ Cl ", where R is mainly dodecyl (4-7%) ^with minor amounts of letradecyl (18%), hexadecyl (8%), octadecyl (10%), octyl (8%) and decyl (9%) Mixture of quaternary salts of the formula:

cn ν

j \ l (CH ₃ )

CH ..

2 C3

wherein R is 29% hexadecyl, 23% octadecyl and 37% octadecenyl.

509834/0993

Briefly summarized, the invention relates to herbicidal mixtures having improved shelf-life properties, consisting of from a dispersed in an aqueous solution of a herbicidal quaternary bipyridylium salt, solid herbicide with a mean Particle size up to 50 Ji. This herbicidal mixture contains a dispersant of a cationic surface-active agent (A) of a specified class, e.g. hexadecyltrimethylammonium chloride, and an amphiphilic compound (B), for example a normal alkanol with 10 to 18 carbon atoms.

509834/0993

Claims (1)

Claims Herbicidal mass with improved storage properties, characterized in that it consists of a solid, Herbicide dispersed in an aqueous solution of a herbicidal quaternary bipyridylium salt with an average particle size up to 50 u and a dispersant, the Dispersant contains (B) an amphiphilic compound and (A) a cationic surfactant containing 1. a quaternary ammonium salt of the formula: R ₁ - Previous year '.I It ' ^Λ - K-, or and ^ aliphatic groups with 8 to 18 carbon atoms, z and R ^ aliphatic groups with less than 8 carbon atoms or Rp is a benzyl group and X is an anion or
2, an auaternary ammonium salt of the formula: CK., N (CII ₂ ) η N CIl CII _v CH ₇ 2X 509834/0993 where R ^ and X are as defined in 1 above and η is a whole Is a number from 2 to 4 inclusive, 3. a quaternary salt of the formula: . ^Λ 1 CH, X or (CH ₂ -CH ₂ O) _y H CH, I ³ X " 'CH, (CHp-CHO) H. CH, where R _x . and X ~ are as defined above under 1 and χ and y each represent an integer from 2 to 23 inclusive, or 4. a quaternary salt of the formula: R ₆ -CONH (OH ₂ >, N (CH,) C ₂ H ₄ OH wherein Rg is an aliphatic group having 8 to 18 carbon atoms and X is an anion, or 5 a quaternary salt of the formula: CH, I ³ OC _O H .. OC _O H, .— N — CH oC.H cisoC "H _rt - V- / 2 ^ 24, 509834/0993 COPY ORIGINAL IMSPECTED - 27 - ■ where X is an anion. 2506834 2. Composition according to claim 1, characterized in that the groups R to Rg are alkyl or alkenyl groups. 3. Composition according to claim 1 or 2, characterized in that the amphiphilic compound 1. an aliphatic alcohol or ethoxylated aliphatic alcohol of the formula R ^ OH or R ₀ (CH ₀ CH ₀ O) - OH, wherein R _{n has} an aliphatic group 8 to 18 carbon atoms, optionally with a phenyl group, and ζ is a number less than 10, or 2. a compound of the formula R ^ A, in which "R _x ., An aliphatic radical with 8 to 18 carbon atoms and A is -NH ₂ »-CO ₀ H, -CONH ₂ , -NHCH ₂ CO ₂ H, -SO R ₁₇ . N Ch 'II I 2- / II. I - H. . or —CNC ₀ Hj ₁ O _n H, .c :: _o H > R15 " -Group, in which R ^^ and R., - alkyl groups with 1 to 4 carbon atoms D denote hydroxyethyl groups. 4. Composition according to claim 3, characterized in that äie groups R "and R ^^ are alkyl or alkenyl groups! 5 · mass according to one of claims 1 to 4, characterized. characterized in that the herbicidal bipyridylium salt has the following 3e formula: f j Γ ll 2 ΓΊ r ^{Ν Cli} 2 ^CH S I IwI η-η COPY _BAD ORIGINAL where P and Q can be identical or different and represent alkyl radicals with 1 to 4 carbon atoms are represented by hydroxyl, halogen, carboxyl, alkoxy, Alkylkarfconyl, Alkoxkarbonyl, Karbamoyl or N-substituted carbamoyl can be substituted, and I xl means an anion and η is 1,2,3 or 4-. 6. Mass according to claim 5, characterized in that the bipyridylium quaternary salt is a salt in which both P as Q, represent methyl groups. 7. Composition according to one of claims 1 to 6, characterized in that that the amount of herbicidal d! quaternary bipyridylium salt in the mass is 100 to 250 g per liter, calculated on the basis of the cation. 8. Mass according to one of claims 1 to 7? characterized, that the amount of dispersant in the mass is 10 to 100 g per liter. 9. Composition according to one of claims 1 to 8, characterized in that the ratio of the cationic surfactant (A) to the amphiphilic compound (B) is 10: 1 to 10: 5 parts by weight. 10. Composition according to one of claims 1 to 9, characterized in that that the cationic surfactant (A) is dodecyl, tetradecyl, hexadecyl or octadecyltrimethylaminonium chloride is. 509334/0993 11. Cash register according to one of claims 1 to 10, characterized in that the amphiphilic compound (B) is a normal alkanol with 10 to 18 carbon atoms or a condensate of undecanol
with 2 to 3 molar proportions of ethylene oxide. 12. A method for producing a mass according to a
of claims 1 to 11, characterized in that a powdery solid herbicide with water and a conventional. Mills oil auxiliaries to form an aqueous dispersion of the solid herbicide with an average particle size of up to 50 U
and the obtained aqueous dispersion containing a shelf life stabilizing amount of a cationic surfactant
Mixing means (A) and an amphiphilic compound (B) after or before the aqueous dispersion of the solid herbicide has been mixed with an aqueous solution of a herbicidal quaternary bipyridylium salt. 509834/0993