CN116391725A - Hydrophobic bactericide and preparation method thereof - Google Patents

Hydrophobic bactericide and preparation method thereof Download PDF

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CN116391725A
CN116391725A CN202310387648.8A CN202310387648A CN116391725A CN 116391725 A CN116391725 A CN 116391725A CN 202310387648 A CN202310387648 A CN 202310387648A CN 116391725 A CN116391725 A CN 116391725A
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hydrophobic
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陈雄胜
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention discloses a hydrophobic bactericide and a preparation method thereof, wherein the hydrophobic bactericide comprises the following components in parts by weight: 40-100 parts of hydrochloric acid aqueous solution; 0.5-5 parts of emulsifying agent; 0.2-2 parts of auxiliary emulsifier; 2-10 parts of hydroxyl-terminated silicone oil; 0.5-2 parts of polyether modified MQ silicone resin; 0.1-2 parts of silane coupling agent; 0.05-0.5 part of nano silver antibacterial agent; 1-5 parts of quaternary ammonium salt cations; 0.01-1 part of catalyst; 1-10 parts of polyether silicone oil. The invention integrates quaternary ammonium salt cations and silver ions with sterilization function into a hydrophobization sterilization prepolymer in an emulsion polymerization mode, the hydrophobization sterilization prepolymer has the characteristic of lasting sterilization effect, and meanwhile, the hydrophobization sterilization prepolymer can be used as a coating additive to be added into a coating, so that the coating has antibacterial and antiviral effects. The hydrophobization disinfection prepolymer and the curing agent can be mixed and sprayed on the surface of an object to form a sterilization protective film on the surface of the object, so that the object surface and the clothing have antibacterial, antiviral and hydrophobization effects.

Description

Hydrophobic bactericide and preparation method thereof
Technical Field
The invention relates to the technical field of preparation of bactericides, in particular to a hydrophobic bactericide and a preparation method thereof.
Background
At present, the common disinfection mode is to add disinfectant products such as chlorine-containing disinfectants, alcohol disinfectants, phenolic disinfectants and the like into common sanitary cleaning, and the disinfectants have short disinfection time and do not have lasting sterilization and antiviral functions. Meanwhile, the existing disinfectant has no hydrophobic effect, and a protective layer with certain hydrophobic capacity cannot be formed on the surface of an object after application.
Accordingly, there is still a need in the art for further improvements and enhancements.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a hydrophobic bactericide and a preparation method thereof, in the invention, two functions of sterilization and hydrophobic modification are integrated into a prepolymer by emulsion polymerization technology, and various hard surfaces are treated by methods of spraying, smearing and the like, so that the hard surfaces form a layer with antibacterial and antiviral effects and certain hydrophobic properties.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a hydrophobic bactericide, comprising, in parts by weight:
Figure BDA0004174617120000011
Figure BDA0004174617120000021
in the invention, the quaternary ammonium salt cations and silver ions with sterilization function are integrated into the hydrophobization sterilization prepolymer in an emulsion polymerization mode, and the hydrophobization sterilization prepolymer can be used as a coating additive and added into a coating, so that the coating has antibacterial and antiviral effects.
The mass percentage of hydrochloric acid in the hydrochloric acid aqueous solution is 0.02-0.1%. For example, 0.02%,0.04%,0.06%,0.08%,0.1%.
The following preferred technical solutions are not limiting to the technical solutions provided by the present invention, and the objects and advantageous effects of the present invention can be better achieved and achieved by the following preferred technical solutions.
As a preferred embodiment of the present invention, the hydrophobic germicides include, but are not limited to, trimethyl [3- (trimethoxysilyl) propyl ] ammonium chloride, trimethyl [3- (triethoxysilyl) propyl ] ammonium chloride, trimethyl [3- (trimethoxysilyl) propyl ] ammonium bromide, trimethyl [3- (triethoxysilyl) propyl ] ammonium bromide, and the like.
Alternatively, the silane coupling agent includes, but is not limited to, KH-550, KH-560, KH-570, KH-561, etc.
KH-550 was 3-aminopropyl triethoxysilane, KH-560 was γ - (2, 3-glycidoxy) propyl trimethoxysilane, KH-570 was γ -methacryloxypropyl, and KH-561 was γ -glycidoxypropyl triethoxysilane.
Alternatively, the catalyst includes, but is not limited to, dilauryldibutyltin, dineopolytin, stannous neodecanoate, 2-ethylhexyl oxy titanate, 1, 3-tetramethylguanidine propyl trimethoxysilane, and the like.
Optionally, the emulsifier is selected from any one of OP-10, tween 40, tween 80, span 20, span 60, sorbitan trioleate, ethylene glycol monobasic fatty acid, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and 6501; the auxiliary emulsifier is selected from any one of n-hexanol, dodecanol/ethanol, n-decanol and n-butanol.
In a second aspect, the present invention provides a method for preparing a hydrophobic bactericide, wherein the method comprises the steps of:
adding a certain amount of hydrochloric acid aqueous solution into a reaction container, then adding polyether silicone oil, polyether modified MQ silicone resin, hydroxyl-terminated silicone oil, nano silver antibacterial agent, hydrophobic bactericide, emulsifier, auxiliary emulsifier, catalyst and silane coupling agent into the reaction container according to the usage amount in the formula, and stirring and mixing uniformly to obtain a mixed solution; it will be readily appreciated that the stirring may be mechanical stirring, magnetic stirring, or the like, and the stirring speed may be 1000rpm.
After the mixed solution is reacted under the condition of the first reaction temperature, heating to a second reaction temperature, and reacting at the second reaction temperature to obtain a reaction mixture; with 1% NaHCO 3 Solution the reaction mixture was adjusted to pH5-9. Heating, evaporating and concentrating until the solid content is 5-20%, thus obtaining the hydrophobic bactericide.
The mixed solution is stirred during the reaction, the stirring speed is kept at 1000rpm, the first reaction temperature can be 20 ℃, the second reaction temperature can be 40-80 ℃, for example, 40 ℃,45 ℃,50 ℃,55 ℃,60 ℃,65 ℃,70 ℃,75 ℃ and 80 ℃.
In a third aspect, the invention also provides an application of the hydrophobic bactericide in surface sterilization of a coating or an object.
Specifically, the hydrophobic bactericide is used as an additive to be added into a paint formula, so that the paint has antibacterial and antiviral functions. The hydrophobization and sterilization prepolymer can be added with a curing agent (10:0.2-0.5), and the mixture is sprayed on the surfaces of walls, tables, chairs and clothes after being uniformly mixed, so that the surfaces of the articles and the clothes have antibacterial and antiviral effects.
Compared with the prior art, the hydrophobic bactericide provided by the invention integrates quaternary ammonium salt cations and silver ions with a bactericidal function into the hydrophobic disinfection prepolymer in an emulsion polymerization mode, the hydrophobic disinfection prepolymer has the characteristic of lasting bactericidal efficacy, and meanwhile, the hydrophobic disinfection prepolymer can be used as a paint additive to be added into paint, so that the paint has antibacterial and antiviral effects. The hydrophobization disinfection prepolymer and the curing agent can be mixed and sprayed on the surface of an object to form a sterilization protective film on the surface of the object, so that the object surface and the clothing have antibacterial, antiviral and hydrophobization effects.
Detailed Description
The invention provides a hydrophobic bactericide and a preparation method thereof, which are used for making the purposes, technical schemes and effects of the invention clearer and more definite, and the invention is further described in detail below. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The hydrophobic bactericide and the preparation method thereof provided by the invention are further explained and illustrated by specific preparation examples.
Example 1
60 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.05%), 1 part of OP-10,2 parts of n-hexanol, 10 parts of hydroxyl-terminated silicone oil with the molecular weight of 2k, 1 part of polyether modified MQ silicone resin with the molecular weight of 2k (M/Q is 0.8), 0.2 part of KH-550,0.2 parts of nano-silver and 5 parts of trimethyl [3- (trimethoxysilyl) propyl]Ammonium chloride, 0.5 part of dilauryl dibutyl tin, 2 parts of polyether silicone oil with the viscosity of 1200, uniformly mixing the raw materials under the condition of stirring, reacting for 15min at 20 ℃, then raising the temperature to 40 ℃, reacting for 30min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=5. And (5) heating, evaporating and concentrating until the solid content is 5%, thus obtaining the hydrophobic bactericide.
The hydrophobic bactericide is used as an additive to be added into water paint (the water paint is sold in the market), and the addition amount is 0.5% of the total amount of the paint, so that the paint with the bactericidal effect is obtained.
Example 2
40 parts of hydrochloric acid aqueous solution (content of hydrochloric acid is 0.1%) and 5 parts of tween 40/tween 80 2 are weighed: 1, 10 parts of isopropanol, 6 parts of hydroxyl-terminated silicone oil with a molecular weight of 8k, 1.5 parts of polyether modified MQ silicone resin with a molecular weight of 1k (M/Q is 0.6), 1 part of KH-560,0.05 parts of nano-silver, 2 parts of trimethyl [3- (triethoxysilyl) propyl]Mixing ammonium chloride, 0.6 part of decyl, 3 parts of polyether silicone oil with viscosity of 800, uniformly mixing the raw materials under stirring, reacting at 20 ℃ for 20min, then raising the temperature to 45 ℃, reacting for 35min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=7. And (5) heating, evaporating and concentrating until the solid content is 8%, thus obtaining the hydrophobic bactericide.
The hydrophobic bactericide is used as an additive to be added into water paint (the water paint is sold in the market), and the addition amount is 0.8% of the total amount of the paint, so that the paint with the bactericidal effect is obtained.
Example 3
80 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.02%) and 4 parts of span 20/span 60 1 are weighed: 3,5 parts of n-butanol, 4 parts of hydroxyl-terminated silicone oil with a molecular weight of 12k, 0.5 part of polyether modified MQ silicon tree with a molecular weight of 3kFat (M/Q is 0.9), 2 parts of KH-570/KH-561 1:1,0.5 part of nano silver, 1 part of trimethyl [3- (trimethoxysilyl) propyl ]]Ammonium bromide, 0.8 part of stannous neodecanoate and 8 parts of polyether silicone oil with the viscosity of 2000, uniformly mixing the raw materials under the condition of stirring, reacting for 30min at 20 ℃, then raising the temperature to 55 ℃, reacting for 40min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=8. And (5) heating, evaporating and concentrating until the solid content is 10%, thus obtaining the hydrophobic bactericide.
Example 4
100 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.08%), 5 parts of sorbitan trioleate, 2 parts of n-hexanol, 2 parts of hydroxyl-terminated silicone oil with a molecular weight of 20k, 1 part of polyether modified MQ silicone resin with a molecular weight of 2k (M/Q is 0.5), 0.1 part of KH-561,0.1 parts of nano-silver and 4 parts of trimethyl [3- (triethoxysilyl) propyl]Ammonium bromide, 1 part of 2-hexyl, 7 parts of polyether silicone oil with the viscosity of 1000, uniformly mixing the raw materials under stirring, reacting for 30min at 20 ℃, then raising the temperature to 60 ℃, reacting for 40min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=8. And (5) heating, evaporating and concentrating until the solid content is 15%, thus obtaining the hydrophobic bactericide.
Example 5
60 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.05%), 0.5 part of ethylene glycol mono hard fatty acid, 2 parts of n-decyl alcohol, 4 parts of hydroxyl-terminated silicone oil with a molecular weight of 16k, 1 part of polyether modified MQ silicone resin with a molecular weight of 1k (M/Q is 0.8), 0.2 part of KH-550,0.2 parts of nano-silver and 3 parts of trimethyl [3- (trimethoxysilyl) propyl]Ammonium chloride, 0.1 part of 1133,6 parts of polyether silicone oil with viscosity of 1500, uniformly mixing the raw materials under stirring, reacting at 20 ℃ for 30min, then raising the temperature to 70 ℃, reacting for 60min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 18%, thus obtaining the hydrophobic bactericide.
Example 6
40 parts of aqueous hydrochloric acid (content of hydrochloric acid is 0.1%), 1 part of sodium dodecyl sulfate, 2 parts of dodecanol/ethanol 1:1,6 partsHydroxyl-terminated silicone oil with molecular weight of 4k, 1.5 parts of polyether modified MQ silicone resin with molecular weight of 2k (M/Q is 0.6), 0.5 parts of KH-560,0.05 parts of nano silver and 5 parts of trimethyl [3- (triethoxysilyl) propyl]Ammonium chloride, 0.2 part of dilauryl dibutyl tin, 5 parts of polyether silicone oil with the viscosity of 2000, uniformly mixing the raw materials under the condition of stirring, reacting for 30min at 20 ℃, then raising the temperature to 80 ℃, reacting for 60min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 20%, thus obtaining the hydrophobic bactericide.
Example 7
80 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.02%), 5 parts of sodium dodecyl benzene sulfonate, 2 parts of n-hexanol, 4 parts of hydroxyl-terminated silicone oil with the molecular weight of 6k, 0.5 part of polyether modified MQ silicone resin with the molecular weight of 1k (M/Q is 0.9), 0.5 part of KH-560,0.5 parts of nano-silver and 2 parts of trimethyl [3- (trimethoxysilyl) propyl]Ammonium bromide, 0.3 part of neodecyl, 1 part of polyether silicone oil with the viscosity of 1000, uniformly mixing the raw materials under stirring, reacting for 30min at 20 ℃, then raising the temperature to 80 ℃, reacting for 60min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 20%, thus obtaining the hydrophobic bactericide.
Example 8
100 parts of aqueous hydrochloric acid solution (the content of hydrochloric acid is 0.08%), 2 parts of 6501,2 parts of n-hexanol, 2 parts of hydroxyl-terminated silicone oil with a molecular weight of 8k, 1 part of polyether modified MQ silicone resin with a molecular weight of 3k (M/Q is 0.5), 1 part of KH-570,0.1 parts of nano-silver and 1 part of trimethyl [3- (triethoxysilyl) propyl]Ammonium bromide, 0.5 part of stannous neodecanoate and 10 parts of polyether silicone oil with the viscosity of 1000, uniformly mixing the raw materials under the condition of stirring, reacting for 30min at 20 ℃, then raising the temperature to 80 ℃, reacting for 60min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 20%, thus obtaining the hydrophobic bactericide.
Comparative example 1
60 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.05%) is weighed,1 part of OP-10,2 parts of n-hexanol, 0.1 part of hydroxyl-terminated silicone oil with a molecular weight of 2k, 5 parts of polyether modified MQ silicone resin with a molecular weight of 2k (M/Q is 0.8), 0.5 part of KH-550,0.2 parts of nano-silver and 5 parts of trimethyl [3- (trimethoxysilyl) propyl]Ammonium chloride, 0.5 part of dilauryl dibutyl tin, 2 parts of polyether silicone oil with the viscosity of 1200, uniformly mixing the raw materials under the condition of stirring, reacting for 30min at 20 ℃, then raising the temperature to 80 ℃, reacting for 60min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 20%, thus obtaining the hydrophobic bactericide.
Comparative example 2
40 parts of hydrochloric acid aqueous solution (content of hydrochloric acid is 0.1%) and 5 parts of tween 40/tween 80 2 are weighed: 1, 10 parts of isopropanol, 20 parts of hydroxyl-terminated silicone oil with a molecular weight of 8k, 5 parts of polyether modified MQ silicone resin with a molecular weight of 1k (M/Q is 0.6), 1 part of KH-560,0.05 parts of nano-silver and 2 parts of trimethyl [3- (triethoxysilyl) propyl]Mixing ammonium chloride, 0.6 part of decyl, 3 parts of polyether silicone oil with viscosity of 800, uniformly mixing the raw materials under stirring, reacting at 20 ℃ for 20min, then raising the temperature to 45 ℃, reacting for 35min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=7. And (5) heating, evaporating and concentrating until the solid content is 8%, thus obtaining the hydrophobic bactericide.
Comparative example 3
80 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.02%) and 0.1 part of span 20/span 60 1 are weighed: 3,0.1 part of n-butanol, 4 parts of hydroxyl-terminated silicone oil with a molecular weight of 12k, 0.5 part of polyether modified MQ silicone resin with a molecular weight of 3k (M/Q is 0.9), 2 parts of KH-570/KH-561 1:1,0.5 part of nano-silver, and 1 part of trimethyl [3- (trimethoxysilyl) propyl]Ammonium bromide, 0.8 part of stannous neodecanoate and 8 parts of polyether silicone oil with the viscosity of 2000, uniformly mixing the raw materials under the condition of stirring, reacting for 30min at 20 ℃, then raising the temperature to 55 ℃, reacting for 40min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=8. And (5) heating, evaporating and concentrating until the solid content is 10%, thus obtaining the hydrophobic bactericide.
Comparative example 4
100 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.08%), 5 parts of sorbitan trioleate, 2 parts of n-hexanol, 2 parts of hydroxyl-terminated silicone oil with a molecular weight of 20k, 1 part of polyether modified MQ silicone resin with a molecular weight of 2k (M/Q is 0.5), 0.1 part of KH-561,0.1 parts of nano-silver and 4 parts of trimethyl [3- (triethoxysilyl) propyl]Mixing ammonium bromide, 1 part of 2-hexyl, 7 parts of polyether silicone oil with viscosity of 1000 under stirring (slower than normal stirring speed), reacting at 20deg.C for 30min, heating to 60deg.C, reacting for 40min, and stirring with 1% NaHCO 3 The solution adjusts the reaction mixture to ph=8. And (5) heating, evaporating and concentrating until the solid content is 15%, thus obtaining the hydrophobic bactericide.
Comparative example 5
60 parts of hydrochloric acid aqueous solution (the content of hydrochloric acid is 0.05%), 0.5 part of ethylene glycol single hard fatty acid, 2 parts of n-decyl alcohol, 4 parts of hydroxyl-terminated silicone oil with the molecular weight of 16k, 1 part of polyether modified MQ silicone resin with the molecular weight of 1k (M/Q is 0.8), 0.2 part of KH-550,0.1 part of 1133,6 parts of polyether silicone oil with the viscosity of 1500 are weighed, the raw materials are uniformly mixed under stirring, the mixture is reacted for 30min at 20 ℃, then the temperature is raised to 70 ℃ for 60min, and 1% NaHCO is used for reaction 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 18%, thus obtaining the hydrophobic bactericide.
Comparative example 6
40 parts of aqueous hydrochloric acid (content of hydrochloric acid is 0.1%), 1 part of sodium dodecyl sulfate, 2 parts of dodecanol/ethanol 1:1,6 parts of hydroxyl-terminated silicone oil with a molecular weight of 4k, 1.5 parts of polyether modified MQ silicone resin with a molecular weight of 2k (M/Q is 0.6), 0.5 part of KH-560,0.2 parts of dibutyltin dilaurate, 5 parts of polyether silicone oil with a viscosity of 2000, uniformly mixing the raw materials under stirring, reacting at 20 ℃ for 30min, then raising the temperature to 80 ℃ for 60min, and using 1% NaHCO 3 The solution adjusts the reaction mixture to ph=9. And (5) heating, evaporating and concentrating until the solid content is 20%, thus obtaining the hydrophobic bactericide.
The products (hydrophobic bactericides) obtained in the above examples and comparative examples were subjected to performance test, and the test results are shown in the following table:
Figure BDA0004174617120000081
Figure BDA0004174617120000091
as can be seen from the table, the hydrophobic bactericide provided by the invention can be used for coating or treating the surface of an object, has excellent bactericidal performance, has longer bactericidal duration of more than 90 days and a contact angle of more than 70, and has good hydrophobic performance.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims (9)

1. The hydrophobizing bactericide is characterized by comprising the following components in parts by weight:
Figure FDA0004174617110000011
2. the hydrophobic bactericidal agent of claim 1 wherein the hydrophobic bactericidal agent is selected from any of trimethyl [3- (trimethoxysilyl) propyl ] ammonium chloride, trimethyl [3- (triethoxysilyl) propyl ] ammonium chloride, trimethyl [3- (trimethoxysilyl) propyl ] ammonium bromide, and trimethyl [3- (triethoxysilyl) propyl ] ammonium bromide.
3. The hydrophobic bactericide according to claim 1, wherein the silane coupling agent is selected from any one of KH-550, KH-560, KH-570 and KH-561.
4. The hydrophobic biocide of claim 1, wherein the catalyst is selected from any one of dilauryldibutyltin, dineopolyethyltin, stannous neodecanoate, 2-ethylhexyloxy titanate, and 1, 3-tetramethylguanidine propyl trimethoxysilane.
5. The hydrophobic bactericidal agent of claim 1 wherein the emulsifying agent is selected from any one of OP-10, tween 40, tween 80, span 20, span 60, sorbitan trioleate, ethylene glycol mono-hard fatty acid, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and 6501; the auxiliary emulsifier is selected from any one of n-hexanol, dodecanol/ethanol, n-decanol and n-butanol.
6. A method of preparing a hydrophobic biocide as claimed in any one of claims 1 to 5 comprising:
dispersing polyether silicone oil, polyether modified MQ silicone resin, hydroxyl-terminated silicone oil, nano silver antibacterial agent, hydrophobic bactericide, emulsifier, auxiliary emulsifier, catalyst and silane coupling agent into hydrochloric acid aqueous solution to obtain mixed solution;
after the mixed solution is reacted under the condition of the first reaction temperature, heating to a second reaction temperature, and reacting at the second reaction temperature to obtain a reaction mixture; and regulating the pH value of the reaction mixture to 5-9 to obtain the hydrophobic bactericide.
7. The method of claim 6, wherein the first reaction temperature is 20 ℃.
8. The method for preparing a hydrophobic bactericide according to claim 6, wherein the second reaction temperature is 40 to 80 ℃.
9. Use of a hydrophobic bactericide according to any one of claims 1 to 5 or a hydrophobic bactericide prepared by the preparation method according to claims 6 to 8 for surface sterilization of a coating or object.
CN202310387648.8A 2023-04-12 2023-04-12 Hydrophobic bactericide and preparation method thereof Withdrawn CN116391725A (en)

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Application publication date: 20230707