CN1462582A

CN1462582A - Soluble solid dosage typed salt of glyphosate

Info

Publication number: CN1462582A
Application number: CN 02119480
Authority: CN
Inventors: 任不凡; 周曙光; 郑红朝; 陈志明; 蒋志秋; 李江; 宋新峰
Original assignee: Zhejiang Xinan Chemical Industrial Group Co Ltd
Current assignee: Zhejiang Xinan Chemical Industrial Group Co Ltd
Priority date: 2002-05-27
Filing date: 2002-05-27
Publication date: 2003-12-24
Anticipated expiration: 2022-05-27
Also published as: CN1203766C

Abstract

A soluble glyphosate solid as herbicide is prepared from the glyphosate (20-80 wt.%), surfactant (5-20 wt.%), and filler (0-75 wt%) chosen from ammonium sulfate, urea, potassium bihydrogen phosphate, etc.

Description

Soluble solid dosage typed salt of glyphosate

Technical field

The invention belongs to a kind of weed killer herbicide formulation, particularly is the weed killer herbicide formulation of active ingredient with the glyphosate.

Background technology

Glyphosate is a kind of steriland herbicide of efficient, wide spectrum, and Gross World Product has reached 200,000 tons/year, and China's production capacity has also reached 60,000 tons/year.Glyphosate also is one of bigger pesticide species of China's outlet.The glyphosate formulation of generally using is 10% sodium glyphosate aqua now, 41%, 62% glyphosate isopropyl amine salt aqua, and a small amount of soluble powder.Wherein the consumption maximum is 10% sodium glyphosate aqua, and this aqua China institute consumption surpasses 50,000 tons, but because its effective component content is low, and packing, transportation, warehouse cost are higher, economical inadequately; Other gyphosate solution need measure in use, and general agricultural chemicals container does not possess function of measuring, and it is convenient inadequately therefore to use.Number of patent application is a kind of soluble glyphosate pulvis of the disclosure of the Invention of 97107058.X, the problems referred to above have been solved, but owing to adopt the former powder preparation of glyphosate, and the solvability of glyphosate in water very little (1.2g/100g) under the normal temperature, in order to make glyphosate dissolving fully in use, in said preparation, also need to add alkaline matters such as urea and make glyphosate salify in water, thereby promote the dissolving of glyphosate, but because this salt-forming reaction process speed is slower, need constantly artificial the stirring in actual use, and need a few minutes and even tens minutes ability is dissolved fully, and is inconvenient more on the contrary.

Summary of the invention

Technical problem to be solved by this invention provides a kind of cost weed killer herbicide that contains glyphosate salt low, easy to use one glyphosate salt soluble solids preparation, and this weed killer herbicide processing is simple, and pollution-free.

Its special character of technical scheme that soluble solid dosage typed salt of glyphosate of the present invention adopts is to be benchmark with described solid dosage forms weight, and the glyphosate salt by 20～80%, 5～20% surfactant and 0～75% filler combination form.

Described glyphosate salt is preferably ammonium glyphosate, also can be glyphosate sodium or glyphosate potassium.

Described surfactant is anion surfactant, cationic surfactant, non-ionic surface active agent or amphoteric surfactant.

In described these surfactants, be preferably the trade mark: two or three mixture of a kind of or any proportioning in TORHANMOR0818A, TORHANMOR0818B, the APG surfactant.

In surfactant, preferably add the polyoxyethylene radical siloxane that contains following structural formula: R ₁Alkoxyl  OCH for degree of polymerization 2-10 ₂CH ₂ _nOH

R ₁₁, R ₁₂, R ₁₃, R ₂₁, R ₂₂, R ₂₃, R ₃₁, R ₃₂, R ₄₁, R ₄₂, R ₅₁Be methyl, carbon numbers such as ethyl are the alkyl of 1-4 or phenyl, benzyl, phenethyl etc., and j, k are the average integer of 0-6.

This polyoxyethylene radical siloxane also is a surfactant, and its dosage can be 1～10% of a described solid dosage forms weight.

Glyphosate salt among the present invention is an ammonium glyphosate, and ammonium glyphosate is selected powder for use, and its preferred content is 30～76% of described solid dosage forms weight, 40～60% of more preferably described solid dosage forms weight.

Soluble solid medicament form of the present invention, described filler are the mixture of one or more any proportionings in ammonium sulfate, urea, potassium dihydrogen phosphate, ammonium chloride, sodium sulphate or white carbon, the diatomite.

Soluble solid medicament form of the present invention can be pulvis, tablet or graininess formulation, and wherein the pulvis dissolving is faster.

Make tablet or graininess formulation, should add an amount of binding agent (as dextrin or gum Arabic) and disintegrant (Na ₂CO ₃), make through comminutor.

In the glyphosate salt, the isopropyl amine salt drug effect is best, and ammonium salt takes second place, and sodium salt etc. are the poorest.And the glyphosate isopropyl amine salt water imbibition is too strong, and fusing point is low, can't be processed into solid dosage forms under the normal temperature.And number of patent application is a kind of soluble glyphosate pulvis of the disclosure of the Invention of 97107058.X, and what in fact dissolving generated in water is sodium glyphosate or glyphosate formyl two amine salt, too late glyphosate isopropyl amine salt and ammonium glyphosate on drug effect.

The preferred ammonium glyphosate of glyphosate salt among the present invention has been done disclosure in No. 99119971.5 patent of invention specifications that its production method is authorized by the applicant's application.Used ammonium glyphosate also can adopt with other explained hereafter.

Used ammonium glyphosate generally is meant purity 〉=95%.

In surfactant of the present invention, add described polyoxyethylene radical siloxane better effects if, this is because it has excellent surface property, medicament is sprawled reach very big cover degree and strong adhesion very on the weeds blade face, guaranteed that medicament is effectively absorbed, can also improve simultaneously the permeability of soup effective ingredient, drug effect is improved, so can reduce dosage.The polyoxyethylene radical siloxane is nontoxic, does not also have the pollution to environment, and it is safe in utilization.

In the filler of the present invention, select chemical fertilizer class materials such as ammonium sulfate, urea for use, better effects if is because also accelerated the conduction of active ingredient in the weeds body in the soup in the quickening metabolic while of weeds after the dispenser.

The present invention is as this soluble solid medicament form of weed killer herbicide, owing to contain glyphosate salt (particularly ammonium glyphosate) and surfactant, make it to have outstanding beneficial effect: 1. extremely easy to use, by the dispenser requirement, add in the suitable quantity of water, stir a little, only clock is a solubilized seconds or tens of seconds, does not have any precipitation; 2. owing to be solid dosage forms, packing, transportation, warehouse cost all are lower than aqua, and therefore farming originally also will be lower than other formulation; 3. the present invention who adds described polyoxyethylene groups silica surfactant, the spreadability and the tack of effective ingredient on weeds is stronger after its soup dispenser, has strengthened anti-rainwater and has washed away ability, and can strengthen drug effect.The present invention is mainly used in no-tillage field, the annual and perennial weed control on ground such as orchard.

Adopt the weed killer herbicide that contains described solid dosage forms gross weight 75.5% ammonium glyphosate among the present invention, warp is in tangerine garden and rice field management of weeds comparative trial, show that it is to total preventive effect of weeds and average preventive effect: 1. greater than " farming reaches " weed killer herbicide, 2. the glyphosate isopropyl amine salt aqua of the concentration 41% of producing greater than applicant, 3. dispenser equated with " peasant happy " weed killer herbicide after 7 days, dispenser after 20 days and 30 days greater than the effect of " peasant's pleasure ".

Embodiment

Example 1:

Prescription: ammonium glyphosate (〉=95%) 80%;

APG(98％)15％；

Polyoxyethylene radical siloxane (I) 5%;

The ammonium glyphosate of producing by patent 99119971.5 of metering is mixed by formula rate with surfactant (containing AGP and polyoxyethylene radical siloxane), stir, cross 80 mesh sieves, packing; Return after granularity is pulverized less than 80 purposes and sieve.

Example 2:

Prescription: ammonium glyphosate (〉=95%) 76%;

TORHANMOR0818B(98％)15％；

Polyoxyethylene radical siloxane (I) 1%;

Ammonium sulfate (agricultural grade) 8%

Example 3:

Prescription: ammonium glyphosate (〉=95%) 60%;

TORHANMOR0818A(98％)10％；

Polyoxyethylene radical siloxane (I) 10%;

Potassium dihydrogen phosphate (agricultural grade) 10%

Ammonium chloride (agricultural grade) 10%

Preparation method is with example 1.

Example 4:

Prescription: ammonium glyphosate (〉=95%) 50%;

APG(98％)5％；

TORHANMOR0818A(98％)5％

Polyoxyethylene radical siloxane (I) 8%;

Potassium dihydrogen phosphate (agricultural grade) 10%

Ammonium chloride (agricultural grade) 22% preparation method is with example 1.Example 5: prescription: ammonium glyphosate (〉=95%) 40%;

APG(98％)3％；

TORHANMOR0818B(98％)2％

Polyoxyethylene radical siloxane (I) 5%;

Potassium dihydrogen phosphate (agricultural grade) 10%

Ammonium sulfate (agricultural grade) 25%

White carbon (precipitation method, technical grade) 15% preparation method is with example 1.Example 5: prescription: ammonium glyphosate (〉=95%) 30%;

APG(98％)2％；

TORHANMOR0818B(98％)2％

TORHANMOR0818A(98％)2％

Polyoxyethylene radical siloxane (I) 4%;

Sodium sulphate 20%

Urea 10%

Diatomite 30% preparation method is with example 1.Example 6: prescription: ammonium glyphosate (〉=95%) 30%;

APG(98％)3％；

Polyoxyethylene radical siloxane (I) 3%;

Sodium sulphate 30%

Urea 14%

Diatomite 20% preparation method is with example 1.Example 7: prescription: ammonium glyphosate (〉=95.5%) 20%;

TORHANMOR0818A surfactant 5%;

Polyoxyethylene radical siloxane 3%;

Ammonium chloride (agricultural grade) 30%;

Sodium sulphate 10%

Ammonium sulfate (agricultural grade) 32%.Preparation method is with example 1.Example 8: prescription: glyphosate sodium (〉=95.5%) 55%;

TORHANMOR0818A surfactant 10%;

Polyoxyethylene radical siloxane 5%;

Ammonium sulfate (agricultural grade) 30%.Preparation method is with example 1.Example 9: prescription: glyphosate sodium (〉=95.5%) 75%;

TORHANMOR0818A surfactant 13%;

Polyoxyethylene radical siloxane 7%;

Ammonium chloride (agricultural grade) 5%; Preparation method is with example 1.Example 10: prescription: glyphosate potassium (〉=95.5%) 75%;

TORHANMOR0818A surfactant 13%;

Polyoxyethylene radical siloxane 7%;

Ammonium chloride (agricultural grade) 5%; Preparation method is with example 1.Example 11: prescription: glyphosate sodium (〉=95.5%) 55%;

TORHANMOR0818A surfactant 10%;

Polyoxyethylene radical siloxane 5%;

Ammonium chloride (agricultural grade) 30%; Preparation method is with example 1.

Claims

1, soluble solid dosage typed salt of glyphosate is characterized in that with described solid dosage forms weight be benchmark, and the glyphosate salt by 20～80%, 5～20% surfactant and 0～75% filler combination form.

2, solid dosage forms as claimed in claim 1 is characterized in that described glyphosate salt is ammonium glyphosate, glyphosate sodium or glyphosate potassium.

3, solid dosage forms as claimed in claim 1 or 2 is characterized in that described surfactant is anion surfactant, cationic surfactant, non-ionic surface active agent or amphoteric surfactant.

4, solid dosage forms as claimed in claim 3 is characterized in that described surfactant is two or three a mixture of a kind of or any proportioning in the trade mark: TORHANMOR0818A, TORHANMOR0818B, the APG surfactant.

5, solid dosage forms as claimed in claim 3 is characterized in that containing in the described surfactant polyoxyethylene radical siloxane of following structural formula: R ₁Alkoxyl  OCH for degree of polymerization 2-10 ₂CH ₂ _nOH

6, solid dosage forms as claimed in claim 5, the content that it is characterized in that described polyoxyethylene radical siloxane is 1～10% of described solid dosage forms weight.

7, solid dosage forms as claimed in claim 2 is characterized in that ammonium glyphosate is a powder, and its content is 30～76% of described solid dosage forms weight.

8, solid dosage forms as claimed in claim 2 is characterized in that ammonium glyphosate is a powder, and its content is 40～60% of described solid dosage forms weight.

9, solid dosage forms as claimed in claim 1 is characterized in that described filler is the mixture of one or more any proportionings in ammonium sulfate, urea, potassium dihydrogen phosphate, ammonium chloride, sodium sulphate or white carbon, the diatomite.

10, solid dosage forms as claimed in claim 1 is characterized in that described solid dosage forms is pulvis, tablet or granule.