PL168742B1 - Biostatic emulsifier dor oily adjuvant used as activators of plant pesticides - Google Patents

Abstract

Biostatic emulsifier for oil adjuvants Ld ^ t ^ t ^ ’wi: ^’ ^^ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ plant protection, containing a mixture of diethanolamine and triethanolamine and a mixture saturated and unsaturated fatty acids, characterized in that it consists of 20-26, preferably 24 parts by weight of an amine of C8-C24 hydrocarbon chain length ethylene oxide with 3-7, preferably 5 moles of ethylene oxide, 16-20, preferably 18 parts by weight of an ethanolamine mixture containing 35-55, preferably 40 parts by weight triethanolamine, 55-65, preferably 60 parts by weight of diethanolamine, 16-20, preferably 18 parts by weight of a mixture of saturated and unsaturated fatty acids Cis, C20, C22 hydrocarbon chain, in which the Cis content exceeds 70%, 25-30, preferably 28 parts by weight of d-sorbitan fatty acid ester in length C12-C22 chain, 9-15, preferably 12 parts by weight of the sodium monoester of the acid sulfosuccinic acid and fatty alcohol ethoxylate or 8-14, preferably 10 parts by weight of the sodium salt of the monoester of sulfosuccinic acid and of ethoxylated nonylphenol and optionally up to 5, preferably 3 parts by weight of polyoxyethylene alkylphenols with a C9 alkylation radical and an average degree of ethoxylation of 5 or 9.

Description

The subject of the invention is a biostatic emulsifier containing components of non-ionic, anionic and cationic nature, intended for the emulsification of a refined fraction of mineral oil in water, used in the form of an emulsion supporting the action of chemical plant protection products such as herbicides and graminicides.

For the preparation of water-oil emulsions intended for interaction with active chemical agents, oil concentrates containing, as is known in their composition, non-ionic emulsifiers, anionic or non-anionic emulsifiers are used.

The first group includes fatty alcohol ethoxylates, alkylphenol ethoxylates, sorbitan fatty acid esters, fatty acid esters and petteritrite, oxyethylates of the above-mentioned esters, ethoxylated fatty acid amides.

The second group is primarily ethanolamite salts of sulfonic acids, oxyethylate sulfates and alkylbetzetosulfotic acid salts.

The third group are suitable non-ionic-anionic compositions.

According to Polish patent description No. 80466, ethoxylated sorbitan monooleate or ethoxylated pentaerythritol mono-oleate or ethoxylated pentaerythritol mono-oleate are used as emulsifier, while penser ^^^ or d-sorbitol derivatives are used in Polish patent no. B4135.

According to Polish patent specification No. 116,444, an emulsifier containing ethoxylated, unsaturated fatty alcohol, oleic acid, trieUanolamine, oxsteUylated tonylphetol and sodium nitrite was developed for mineral oil.

The Polish patent specification No. 149 420 describes an emulsifier for an oil adjuvant consisting of 70-75 parts by weight of tricycle, ethoxylated sorbitol, 20-21 parts by weight of sorbitan monooleate, 4-5 parts by weight of ammonium salt of sulphated n-alkyl oxyethylated phenol 0, 2-0.5 parts by weight of diethanolamine and triethatol amlt; 0.05-0.1 parts by weight of sodium di-2-euylhexyl sulfosuccinate.

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The emulsifier used to prepare the emulsion used as an agent improving the effectiveness of plant protection products should have the following characteristics:

- stability as a concentrate, easy emulsifiability in oil for emulsions and durability during application,

- good penetration deep into the leaf and at the same time creating a durable monomolecular film on the leaf,

- resistance to the development of biological life during storage,

- do not cause corrosion of the equipment for preparation and use of the agent,

- do not pose a threat to the environment / contain natural ingredients, non-toxic, biodegradable in the environment to substances absorbed by the ecosystem /.

The above-mentioned types of emulsifiers have most of the desired characteristics, however, they are not sufficiently resistant to the development of organic life and they do not have the ability to form a continuous monomolecular film.

The aim of the invention was to develop an emulsifier for oil plant protection product enhancers having good utility properties.

The essence of the invention consists in preparing an emulsifier consisting of 20-26, preferably 24 parts by weight of an amine with a hydrocarbon chain length ^C B- ^C 24, ethoxylated with 3-7, preferably 5 moles of ethylene oxide, 16-20, preferably 18 parts by weight of an ethanolamine mixture, containing 35 55, preferably 40 parts by weight of triethanolamine, 16-20, preferably 10 parts by weight of a mixture of saturated and unsaturated fatty acids with a hydrocarbon chain of 0 ^, ^ 22 ' ^{, the} content of C' is above 70%, 25-30, preferably 28 parts by weight d-sorbitol ester of fatty acids with a chain length of Ci ^- C-9-15, preferably 22 parts of the lower monoester of sulphosuccinic acid and ethoxylated fatty alcohol, or 8-14, preferably 10 parts by weight, of sodium salt of the monoester of sulphosuccinic acid and of nonylphenol-di-ethyl, and optionally up to 5, preferably 3 parts by weight of p-dihydroxyethylene C alkyl phenols with a C _n alkylation radical and a degree of ethoxylation of an average of 5 or 9.

Unexpectedly, it turned out that the use of ethoxylated fatty amine in the emulsifier composition together with ethanolamines and sodium salt of sulphosuccinic acid and nonylphenol oxyethylene resulted in increased biostaticity of the system, better corrosion inhibition and even adhesion to the leaf in the form of a monomolecular liquid film, prognosticating a longer time of the active substance. , while maintaining the other features.

The proper wettability of the leaf is ensured by the sodium salt system, the monoester of sulfosuccinic acid, and the durability is extended by the addition of polyoxyethylene alkylphenols. A positive aspect of the developed emulsifier is the natural origin of most of the raw materials (plant or animal).

Example 1 1500 kg of a liquid oxystylated with an average of 5 moles of ethylene oxide of a fatty amine with a hydrocarbon chain length of C'-C24 were introduced into the mixer by heating to a temperature of 60-70 ° C, while stirring, the ethane mixture was added in the amount of 1020 kg, containing 610 kg. dCetanoldamine and 410 kg of triethanamine and a mixture of fatty acids in the amount of 1025 kg with a hydrocarbon chain length of? 8-22 containing 750 kg of oleic acid. Then, 1680 kg of d-sorbitol ester and fatty acids with a chain length of £] ^ 22 'were introduced simultaneously

600 kg of sodium salt of the monoester of sulphosuccinic acid and oxyethylated nonylphenol and 180 kg of oolidxyethylated C alkCldphenol C with the radical of alkylation and the degree of ethoxylation

5. The mixture was stirred for 2.5-3.5 hours. At a temperature of about 70 ° C, then cooled to a temperature of about 40 ° C and sent to the storage room.

A stable product withstanding the tests of 14 days at the temperature of 50 ° C, resistant to temperatures down to -50 ° C, total alkalinity of 19 in terms of diethanolamine and a pH of 5% in aqueous solution of 9.2 was maintained.

The 5% emulsifier-based oil emulsion contaminated with bacteria up to the level of 105 / cm3 maintained this level throughout the research period, i.e. 14 days - de la Pena Biotest dip slide test, while the reference sample was contaminated to the level of 10 / cm.

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The surface contact angle was close to 0 degrees, which proves the formation of a monomolecular layer (minimal surface tension at the interface).

Example II. 1550 kg of a liquid ethoxylated with 3-5 moles of ethylene oxide of a fatty amine with a hydrocarbon chain length of C 8 -C 4 were introduced into the mixer. 1050 kg of a mixture of ethanolamines with the composition as in example 1, 1050 kg of a mixture of fatty acids containing 750 kg of olein gase, 1740 kg of esruu d-sobbitu in fatty acids with a hydrocarbon chain length of% 2 'kg of sodium monoester of stlfobursztywosege acid and fatty alcohol of etexylated

Process parameters: temperature 70-75 ° C, mixing time 2.5 hours.

The product obtained had a pH of 3% in aqueous solution of 9.1, total alkalinity based on diethanolamine 18 and stability as in Example 1.

The contaminated oil prepared on its basis maintains the level of contamination for 2 weeks and the wettability of the leaf is complete - the contact angle is 0 °.

Publishing Department of the UP RP. Circulation of 90 copies. Price PLN 1.50

Claims (1)

Patent claim Biostatic emulsifier for oil adjuvants activating the action of plant protection products, containing a mixture of diethanolamine and triethanolamine and a mixture of saturated and unsaturated fatty acids, characterized in that it consists of 20-26, preferably 24 parts by weight of an amine with a hydrocarbon chain length ^ G ^ 24 ethoxylated 3 -7, preferably 5 moles of ethylene oxide, 16-20, preferably 18 parts by weight of an ethanolamine mixture containing 35-55, preferably 40 parts by weight of triethanolamine, 55-65, preferably 60 parts by weight of diethanolamine, 16-20, preferably 18 parts by weight of the mixture saturated and unsaturated fatty acids with the hydrocarbon chain C 1, 6 O ', in which the content of C _{1 f!} is above 70%, 25-30, preferably 28 parts by weight of d-sorbitan ester of fatty acids with a chain length of ^C 12 ~ ^C 22, 9-15, preferably 12 parts by weight of sodium monoester sulfosuccinic acid ethoxylated fatty alcohol or 0-14, preferably 10 parts by weight of sodium salt of the monoester of sulfosuccinic acid and oxyethylated nonylphenol and optionally up to 5, preferably 3 parts by weight of polyoxyethylene alkylphenols with an alkylation radical and an average degree of ethoxylation of 5 or 9.