CN114395332B - Rosin-based metal complex and application thereof - Google Patents

Rosin-based metal complex and application thereof Download PDF

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Publication number
CN114395332B
CN114395332B CN202210110755.1A CN202210110755A CN114395332B CN 114395332 B CN114395332 B CN 114395332B CN 202210110755 A CN202210110755 A CN 202210110755A CN 114395332 B CN114395332 B CN 114395332B
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rosin
metal complex
based metal
reaction
suspending agent
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CN114395332A (en
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武展
温书恒
王勇
罗颖思
杨春燕
陈希唐
蔡凤英
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Guangdong Geolong Biotechnology Co ltd
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Guangdong Geolong Biotechnology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09FNATURAL RESINS; FRENCH POLISH; DRYING-OILS; OIL DRYING AGENTS, i.e. SICCATIVES; TURPENTINE
    • C09F1/00Obtaining purification, or chemical modification of natural resins, e.g. oleo-resins
    • C09F1/04Chemical modification, e.g. esterification
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00Protecting plants

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Cosmetics (AREA)

Abstract

The invention relates to the field of fruit and vegetable sunburn prevention complexes, in particular to a rosin-based metal complex which comprises the following components in percentage by mass: 10-30% of rosin, 1-10% of alkali, 5-20% of metal salt, 5-10% of dispersing agent and 30-55% of water. The invention provides a rosin-based metal complex and application thereof, which are convenient to use, good in adhesion and capable of effectively preventing sunburn.

Description

Rosin-based metal complex and application thereof
Technical Field
The invention relates to the field of fruit and vegetable sunburn-preventing complexes, in particular to a rosin-based metal complex and application thereof.
Background
The citrus fruit is one of important origin places of citrus fruit in China, has rich citrus fruit resources, various excellent varieties and cultivation history of over 4000 years. In recent years, the citrus planting area in China is enlarged year by year, and the annual growth rate is close to 3%.
In the southwest citrus production area of China, the damage of sunburn diseases rises year by year under the influence of high-temperature weather, especially in noon and afternoon of high-temperature weather, the local temperature of the citrus tree subjected to direct sunlight rises sharply, when the temperature rises to above 40 ℃, chlorophyll of the leaf is gradually decomposed, the leaf color becomes light or yellow, a large amount of leaves fall after rain, and if the local temperature is too high and the air dries and evaporates too quickly, the leaf is dead locally. Abnormal colors appear on the fruit skin, such as the fruit surface turns to be yellowish or brown at high temperature for a plurality of days, and the peel at the color change part is sunk and hardened. The sunscald seriously affects the appearance of citrus fruits and even causes serious consequences such as fruit drop.
At present, in the actual production process, the orange sun-burn is mainly prevented by means of manual bagging or smearing of a whitening agent (most of calcium carbonate) and the like, which is time-consuming and labor-consuming, and a good sun-proof effect is difficult to obtain. In the prior art 1, components such as light calcium carbonate, ultraviolet blocking agent, surfactant, paraffin oil and the like are adopted to prepare the citrus sun-proof sunburn material, and the formula of the material contains a large amount of light calcium carbonate, so that the material is easy to precipitate and agglomerate due to high density of the light calcium carbonate, and the use is influenced; in the prior art 2, a sodium polyacrylate solution and sodium carbonate are mixed, and then a calcium chloride aqueous solution is added, wherein the polyacrylic acid component in the formula and industrial glue which we usually say are used for sun protection of oranges, the sun protection material is difficult to completely decolor in the later period, white residues on the surfaces of the oranges are often difficult to remove, and the appearance and quality of the fruits are seriously influenced.
At present, more ways of manually bagging or smearing the whitewashing agent are adopted to prevent sunburn, and other types of whitewashing agents are also used, wherein the problems that time and labor are wasted, the adhesiveness of the glue whitewashing agent is high, flushing is difficult and the like are solved, the appearance of fruits is also affected, and the income is further affected.
Disclosure of Invention
In order to solve the problems, the invention provides a rosin-based metal complex and application thereof, which are convenient to use and good in adhesiveness and can effectively prevent sunburn.
The invention adopts the following technical scheme:
a rosin-based metal complex comprising the following components in mass fraction: 10-30% of rosin, 1-10% of alkali, 5-20% of metal salt, 5-10% of dispersing agent and 30-45% of water.
The technical scheme is further improved in that the rosin is one or a mixture of several of gum rosin, hydrogenated rosin and disproportionated rosin.
The technical scheme is further improved in that the alkali is one or a mixture of any of sodium hydroxide, potassium hydroxide and ethanolamine.
The technical scheme is further improved in that the metal salt is one or a mixture of any of magnesium sulfate, zinc chloride, calcium chloride and magnesium chloride.
The technical scheme is further improved that the dispersing agent is one or a mixture of more than one of naphthalene sulfonic acid formaldehyde condensate sodium salt, alkyl naphthalene sulfonate polycondensate, nonylphenol polyoxyethylene ether, sodium styrene sulfonate, acrylic acid, castor oil polyoxyethylene ether and sodium lignin sulfonate.
The technical scheme is further improved in that the reaction of the rosin-based metal complex is carried out in a reaction kettle, the reaction temperature is controlled to be 80-95 ℃, and the reaction time is 3-8h.
The technical scheme is further improved in that the rosin-based metal complex can be further processed into one preparation of suspending agents, wettable powder and dry suspending agents for application.
The processing technology of the rosin-based metal complex into a suspending agent comprises the following steps:
s1, adding alkali into a reaction kettle, adding part of water for dissolution, adding rosin into the dissolved alkali liquor, heating to 80-90 ℃ for reaction for 1.5-3 hours, and completely saponifying to obtain soap solution;
s2, adding metal salt into the soap solution in the step S1, keeping the temperature at 90-93 ℃ and reacting for 2-3 hours to obtain a reaction solution;
s3, adding a prepared dispersing agent into the reaction liquid in the step S2, keeping the reaction dimension at 85-90 ℃, and reacting for 0.5-1.5h to obtain a reactant;
s4, cooling the reactant in the step S3, adding sericite or lithopone when the temperature is reduced to below 40 ℃, discharging, and processing by a colloid mill and a sand mill to obtain the suspending agent of the rosin-based metal complex.
The technical scheme is further improved that the suspending agent of the rosin-based metal complex comprises the following components in percentage by mass: 10-25% of rosin, 2-8% of alkali, 10-20% of metal salt, 5-10% of dispersing agent, 10-12% of sericite or lithopone and 30-45% of water.
The rosin-based metal complex is applied to fruit and vegetable sunburn prevention.
The beneficial effects of the invention are as follows:
the rosin-based metal complex has the characteristics of good adhesiveness, high whiteness and rain wash resistance, can supplement various metal elements such as calcium and magnesium required by citrus in the later period, effectively improves the quality of fruits, and is suitable for being used for preventing sunscald of citrus in summer.
Drawings
FIG. 1 is a state diagram of the invention prior to treatment with a suntan lotion of comparative example 1;
FIG. 2 is a state diagram of the invention after the sun-block treatment of comparative example 1;
FIG. 3 is a state diagram of the invention prior to treatment with the sunscreen of comparative example 2;
FIG. 4 is a state diagram of the invention after treatment with the sunscreen of comparative example 2;
FIG. 5 is a state diagram of the rosin-based calcium magnesium zinc complex of example 1 of the present invention before treatment;
FIG. 6 is a state diagram of the rosin-based calcium magnesium zinc complex of example 1 of the present invention after treatment;
FIG. 7 is a state diagram of comparative example 3 of the present invention prior to treatment with a suntan lotion;
FIG. 8 is a state diagram of comparative example 3 of the present invention after a sun-block application treatment;
FIG. 9 is a state diagram of the invention prior to treatment with the sunscreen of comparative example 4;
FIG. 10 is a state diagram of the invention after treatment with the sunscreen of comparative example 4;
FIG. 11 is a state diagram of the suspending agent of example 2 of the present invention prior to treatment;
FIG. 12 is a state diagram of the suspension concentrate according to example 2 of the present invention after treatment.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A rosin-based metal complex comprising the following components in mass fraction: 10-30% of rosin, 1-10% of alkali, 5-20% of metal salt, 5-10% of dispersing agent and 30-45% of water.
Preferably, the rosin is one or a mixture of any of gum rosin, hydrogenated rosin and disproportionated rosin.
Preferably, the alkali is one or a mixture of any of sodium hydroxide, potassium hydroxide and ethanolamine.
Preferably, the metal salt is one or a mixture of any of magnesium sulfate, zinc chloride, calcium chloride and magnesium chloride.
Preferably, the dispersing agent is one or a mixture of more than one of naphthalene sulfonic acid formaldehyde condensate sodium salt, alkyl naphthalene sulfonate polycondensate, nonylphenol polyoxyethylene ether, sodium styrene sulfonate, acrylic acid, castor oil polyoxyethylene ether and sodium lignin sulfonate.
Preferably, the reaction of the rosin-based metal complex is performed in a reaction kettle, the reaction temperature is controlled to be 80-95 ℃, and the reaction time is 3-8h.
Preferably, the rosin-based metal complex can also be processed into one of suspending agent, wettable powder and dry suspending agent for application.
Preferably, the rosin-based metal complex is processed into a suspending agent, and the processing technology comprises the following steps:
s1, adding alkali into a reaction kettle, adding part of water for dissolution, adding rosin into the dissolved alkali liquor, heating to 80-90 ℃ for reaction for 1.5-3 hours, and completely saponifying to obtain soap solution;
s2, adding metal salt into the soap solution in the step S1, keeping the temperature at 90-93 ℃ and reacting for 2-3 hours to obtain a reaction solution;
s3, adding a prepared dispersing agent into the reaction liquid in the step S2, keeping the reaction dimension at 85-90 ℃, and reacting for 0.5-1.5h to obtain a reactant;
s4, cooling the reactant in the step S3, adding sericite or lithopone when the temperature is reduced to below 40 ℃, discharging, and processing by a colloid mill and a sand mill to obtain the suspending agent of the rosin-based metal complex.
Preferably, the suspending agent of the rosin-based metal complex comprises the following components in percentage by mass: 10-25% of rosin, 2-8% of alkali, 10-20% of metal salt, 5-10% of dispersing agent, 10-20% of sericite or lithopone and 30-45% of water.
The rosin-based metal complex is applied to citrus sunburn prevention.
The rosin-based metal complex provided by the invention is simple in preparation process, does not need to additionally introduce other solvents or other adhesives in the process, and especially can be prepared by a suspending agent, and the rosin-based metal complex is worthy of one-step reaction, so that time and labor are saved.
Based on the suspending agent technology, the complex can also be processed into wettable powder, and the latter can be used as a dry suspending agent.
The complex product prepared is used for preventing and treating the sunscald disease of the citrus, is convenient to use, can supplement various metal elements necessary for the later stage of the citrus, and has better effect on improving the quality of the fruit.
Example 1
The preparation of the rosin-based calcium magnesium zinc complex suspending agent comprises the following steps:
s1, adding 30 kg of potassium hydroxide into 450 kg of water for dissolution, adding 200 kg of rosin into the dissolved potassium hydroxide solution, heating to 85 ℃, and reacting for 3 hours to obtain soap solution after complete saponification;
s2, respectively taking 20 kg of magnesium chloride, 100 kg of calcium chloride and 50 kg of zinc sulfate, adding into the soap solution in the step (1), keeping the temperature at 93 ℃, and reacting for 3 hours to obtain a reaction solution;
s3, adding 20 kg of naphthalene sulfonic acid formaldehyde condensate sodium salt and 30 kg of sodium dodecyl benzene sulfonate into the reaction liquid in the step S2, keeping the reaction dimension at 85 ℃, and reacting for 1h to obtain a reactant;
s4, cooling the reactant in the step S3, adding 100 kg of lithopone when the temperature is reduced to below 40 ℃, discharging the lithopone, and processing the lithopone by a colloid mill and a sand mill to obtain the suspending agent of the rosin calcium magnesium zinc complex.
Comparative example 1
Conventional sunscreens are used.
Comparative example 2
Commercial anti-glare plant sunscreens were used.
The rosin-based calcium magnesium zinc complex obtained in the example 1 and the comparative examples 1 and 2 are used for preventing and treating citrus sunburn, and the complex obtained in the example 1 is found to have better effect than the conventional prevention and treatment medicament. The specific test protocol and conclusions are as follows:
1. test agent and treatment:
numbering device Medicine and treatment Application method
A Manual application sun-screening agent (conventional) Smearing on
B Strong light resistant plant sun-screening agent (commercially available) Diluted 20 times
C Rosin-based calcium magnesium Complex of example 1 Diluted 20 times
2. Test crop: wogan, three years of tree age, middle-upper tree vigor; test time: 2021, 7, 10, and 2021, 9, 15.
3. As is evident from fig. 1-2, manual application of the sunscreen agent can better prevent sunburn, but later application is difficult to clean, so that the quality of fruits is seriously affected, photosynthesis complement of fruit trees is also caused, color conversion and nutrition accumulation complement are caused, and the flavor is affected.
As is apparent from fig. 3 to 4, the sunscreen agents sold in the market are generally components of calcium oxide mixed by glue, after 2 months of experiments, after a plurality of rainwash, there are almost no sunscreen effects, and many "sunfruits" are found during investigation, namely, the peel of the direct sunlight part is damaged, oil bubbles are broken, even the phenomenon of fruit cracking occurs, and the yield and income are seriously affected.
As is apparent from fig. 5 to 6, after the rosin-based calcium-magnesium complex obtained in example 1 is treated, the surface of the citrus tree is uniformly colored, the citrus tree has excellent adhesion, good sun-proof effect can be maintained after 2 months of weather, and the toughness of the peel is well protected due to the abundant calcium and magnesium elements contained in the formula. The investigation revealed that most fruits had good appearance and quality except for a few minor burns, and no excessive drug residues.
Example 2
The preparation of the rosin-based calcium-magnesium complex mixed sericite suspending agent comprises the following steps:
(1) Adding 23 kg of potassium hydroxide into 400 kg of water for dissolution, adding 180 kg of rosin into the dissolved potassium hydroxide solution, heating to 85 ℃, and reacting for 2.5h to completely saponify;
(2) Respectively taking 30 kg of magnesium chloride and 80 kg of calcium chloride, adding the magnesium chloride and the 80 kg of calcium chloride into the soap solution in the step (1), keeping the temperature at 93 ℃ and reacting for 2.5h;
(3) Adding 25 kg of alkyl naphthalene sulfonate polycondensate, 30 kg of sodium dodecyl benzene sulfonate and 32 kg of sodium lignin sulfonate into the reaction solution in the step (2), keeping the reaction dimension at 85 ℃, and reacting for 40min;
(4) And (3) cooling the reactant in the reaction (3), adding 200 kg of sericite when the temperature is reduced to below 40 ℃, stirring for 1h, discharging, and processing into a suspending agent of the rosin calcium magnesium complex mixed sericite by a colloid mill and a sand mill.
The suspending agent is used for preventing and treating the citrus sun-burn, and has the advantages of more environmental protection, labor saving, obvious effect and the like compared with the conventional preventing and treating agent. The specific test protocol and conclusions are as follows:
1, test agent and treatment:
numbering device Medicine and treatment Application method
Comparative example 3 Manual application sun-screening agent (conventional) Smearing on
Comparative example 4 Strong light resistant plant sun-screening agent (commercially available) 20 times of
Example 2 Suspending agent 30 times
2, test crop: wogan, three years of tree age, the middle-upper tree vigor.
3, test time: 2021, 7, 15-2021, 9, 15.
4, as is apparent from fig. 7-8, the sun-screening agent is manually coated, so that sunburn can be well prevented, but the later coating is difficult to clean, the quality of fruits is seriously affected, photosynthesis complement of fruit trees is also caused, color conversion and nutrition accumulation complement are caused, and the flavor is affected.
As is apparent from fig. 9 to 10, most of the commercially available sunscreens are acrylic acid glue mixed calcium carbonate and the like, after a plurality of rainwash for 2 months, almost no sunscreening effect is obtained, and a plurality of sun fruits are found during investigation, namely, the peel of the direct sunlight part is damaged, oil bubbles are broken, even fruit cracking occurs, and the yield and the income are seriously affected.
As is apparent from fig. 11-12, the suspending agent obtained in example 2 is uniformly colored on the surface of the citrus tree after being treated, has excellent adhesion, can still maintain a good sun-proof effect after being subjected to wind and rain for more than 2 months, and has a good protection effect on the toughness of the peel due to the abundant calcium and magnesium elements contained in the formula. And due to the addition of sericite, the ultraviolet light in sunlight has better reflection and absorption effects, and the temperature of the surface of the pericarp when the sunlight is directly irradiated is effectively reduced. The investigation revealed that most fruits had good appearance and quality except for a few minor burns, and no excessive drug residues.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (1)

1. The application of the rosin-based metal complex is characterized in that the rosin-based metal complex is processed into a rosin-based metal complex suspending agent, the rosin-based metal complex suspending agent is applied to fruit and vegetable sunburn prevention, and the preparation method of the rosin-based metal complex suspending agent comprises the following steps:
s1, adding potassium hydroxide into a reaction kettle, adding part of water for dissolution, adding rosin into a dissolved potassium hydroxide solution, heating to 80-90 ℃ for reaction for 1.5-3 hours, and completely saponifying to obtain soap solution;
s2, adding metal salt into the soap solution in the step S1, keeping the temperature at 90-93 ℃ and reacting for 2-3 hours to obtain a reaction solution; the metal salt is prepared from magnesium chloride, calcium chloride and zinc sulfate according to a mass ratio of 1:5:2.5 or magnesium chloride and calcium chloride according to the mass ratio of 3:8, the composition is formed;
s3, adding a prepared dispersing agent into the reaction liquid in the step S2, keeping the reaction dimension at 85-90 ℃, and reacting for 0.5-1.5h to obtain a reactant; the dispersing agent is prepared from naphthalene sulfonic acid formaldehyde condensate sodium salt and sodium dodecyl benzene sulfonate according to a mass ratio of 2:3 or alkyl naphthalene sulfonate polycondensate, sodium dodecyl benzene sulfonate and sodium lignin sulfonate according to a mass ratio of 25:30: 32;
s4, cooling the reactant in the step S3, adding sericite or lithopone when the temperature is reduced to below 40 ℃, and discharging the mixture through a colloid mill and a sand mill to prepare a suspending agent of the rosin-based metal complex;
the rosin-based metal complex suspending agent comprises the following components in percentage by mass: 10-25% of rosin, 2-8% of potassium hydroxide, 10-20% of metal salt, 5-10% of dispersing agent, 10-20% of sericite or lithopone and 30-45% of water.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101278889A (en) * 2000-02-18 2008-10-08 Basf公司 Cosmetic or dermatological sunscreens
CN104530985A (en) * 2014-12-23 2015-04-22 中国海洋大学 Rosin metal salt resin as well as preparation method and application thereof
CN107324988A (en) * 2017-07-11 2017-11-07 山东亿嘉农化有限公司 The preparation method of resin acid zinc, the resin acid zinc prepared and application
CN108587473A (en) * 2018-04-13 2018-09-28 周文辽 The synthetic method of modified chlorofluorination lithium base disproportionated rosin and its application in metal working fluid
CN112047830A (en) * 2020-09-22 2020-12-08 广西茂源科技有限公司 Preparation method and application of calcium rosinate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180333347A1 (en) * 2017-05-16 2018-11-22 Arizona Board Of Regents On Behalf Of The University Of Arizona Photochemically stable, non-leaching sunscreens from epoxide-based silane coupling agents and uv absorbing chromophores
US20210212250A1 (en) * 2016-07-06 2021-07-15 Crop Enhancement, Inc. Nontoxic coating concentrates for agricultural uses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101278889A (en) * 2000-02-18 2008-10-08 Basf公司 Cosmetic or dermatological sunscreens
CN104530985A (en) * 2014-12-23 2015-04-22 中国海洋大学 Rosin metal salt resin as well as preparation method and application thereof
CN107324988A (en) * 2017-07-11 2017-11-07 山东亿嘉农化有限公司 The preparation method of resin acid zinc, the resin acid zinc prepared and application
CN108587473A (en) * 2018-04-13 2018-09-28 周文辽 The synthetic method of modified chlorofluorination lithium base disproportionated rosin and its application in metal working fluid
CN112047830A (en) * 2020-09-22 2020-12-08 广西茂源科技有限公司 Preparation method and application of calcium rosinate

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