CN110256747A - A kind of antibiotic plastic and its preparation method and application - Google Patents
A kind of antibiotic plastic and its preparation method and application Download PDFInfo
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- CN110256747A CN110256747A CN201910402539.2A CN201910402539A CN110256747A CN 110256747 A CN110256747 A CN 110256747A CN 201910402539 A CN201910402539 A CN 201910402539A CN 110256747 A CN110256747 A CN 110256747A
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/015—Biocides
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
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- C08K2003/0806—Silver
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The present invention relates to food packaging safety technical fields, more particularly to a kind of antibiotic plastic and its preparation method and application, the antibiotic plastic, including plastics and antibacterial agent, the weight percent of antibacterial agent is 0.05~5wt%, and antibacterial agent includes nano antibacterial agent and inorganic antiseptic.Since antibacterial agent includes nano antibacterial agent and inorganic antiseptic, so that the antibiotic plastic had both had excellent anti-microbial property, and effectively migration of the control antibacterial agent to food and food simulants again while effectively inhibiting bacterial growth, antibacterial agent is avoided in the precipitation of frosting, this can be widely applied to the fields such as food for guaranteeing properties of product and ensureing that the safety of consumer is significant.The preparation method of the antibiotic plastic has method simple, and production cost is low, and can be suitable for the characteristics of being mass produced.
Description
Technical field
The present invention relates to food packaging safety technical fields, and in particular to a kind of antibiotic plastic and preparation method thereof and answers
With.
Background technique
In the packaging of various product, plastic package material is often used.Packaging product is difficult in usual use
Exempt from that the human body to carry disease germs, object can be contacted, thus may be infected with and breed various pathogens in frosting.One is added in the plastic
Quantitative antibacterial agent, to play antibacterial and antibacterial effect, to keep the cleaning of its own and packaging product.Especially exist
Food grade plastic packaging field makes food contact material avoid breeding bacterium, to extend the shelf life of food.
In commodity production, antibacterial agent can be added in the plastic to achieve the purpose that antibacterial.There is related patents concern at present
Raising of the antibacterial agent for plastic material anti-microbial property, for example, Patent No. CN108774356A, a kind of preparation of antibiotic plastic
Method；Patent No. CN107602898A, a kind of antibiotic plastic and preparation method thereof；Patent No. CN108189501A, it is a kind of
Anti-bacterial refreshing package plastics of food film；In the prior art, the antibacterial agent added in antibiotic plastic is in different temperatures and environment
Under the influence of, substance can be precipitated in frosting, and the substance of precipitation will affect the apparent and quality of food contact material itself, and may
Form food safety hazards.
Summary of the invention
It is an object of the present invention in view of the deficiencies of the prior art, providing a kind of antibiotic plastic, antibiotic plastic tool
There is excellent anti-microbial property, while can control migration of the antibacterial agent to food again, avoids antibacterial agent in the precipitation of frosting.
The second object of the present invention is to provide a kind of preparation method of antibiotic plastic in view of the deficiencies of the prior art.
The third object of the present invention is to provide a kind of application of antibiotic plastic in view of the deficiencies of the prior art.
One of to achieve the goals above, the present invention adopts the following technical scheme:
A kind of antibiotic plastic, including plastics and antibacterial agent be provided, the weight percent of the antibacterial agent is 0.05~
5wt%, the antibacterial agent include nano antibacterial agent and inorganic antiseptic；
The nano antibacterial agent is for one of nano silver, Nanometer Copper, nano zine oxide or nano-titanium dioxide or arbitrarily
Two or more compositions；
The inorganic antiseptic is silver ion salt, salt containing zinc ion, copper ions salt, salt containing magnesium ion, contains iron ion
One of salt, salt containing aluminium ion or titaniferous ion salt or any two or more composition.
The carrier of the antibacterial agent is one of zeolite powder, conch meal, basic zirconium phosphate or any two or more composition.
The antibiotic plastic further includes auxiliary agent.
The auxiliary agent is one of coupling agent, dispersing agent, ultraviolet absorber, antioxidant, plasticizer or light stabilizer
Or any two or more composition.
The plastics are polyolefin plastics.
The polyolefin plastics includes polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polylactic acid
Or one of polyvinyl alcohol or any two or more composition.
To achieve the goals above two, the present invention adopts the following technical scheme:
A kind of preparation method of antibiotic plastic is provided, it is the following steps are included: antibacterial agent and plastics are uniformly mixed, then
Heating melting, and extruding pelletization are carried out, master batch is obtained, then master batch is formed a film using injection molding machine injection molding or inflation film manufacturing machine, obtains institute
State antibiotic plastic.
In above-mentioned technical proposal, the temperature of the heating melting is 220 DEG C~260 DEG C.
In above-mentioned technical proposal, the process of the granulation is repeated 1~4 time.
To achieve the goals above two, the present invention adopts the following technical scheme:
A kind of application of antibiotic plastic is provided, the antibiotic plastic is applied to food packaging applications.
Compared with prior art, beneficial effect is the present invention:
(1) a kind of antibiotic plastic provided by the invention, since antibacterial agent includes nano antibacterial agent and inorganic antiseptic, so that
The antibiotic plastic had both had excellent anti-microbial property, and effectively controlled antibacterial agent again to food while effectively inhibiting bacterial growth
The migration of product and food simulants avoids antibacterial agent in the precipitation of frosting, this is for guaranteeing that properties of product and guarantee disappear
The safety of the person of expense is significant, can be widely applied to the fields such as food.
(2) preparation method of a kind of antibiotic plastic provided by the invention has method simple, and production cost is low, and can
The characteristics of suitable for being mass produced.
Detailed description of the invention
Fig. 1 is dispersion comparison diagram of the antibacterial agent of embodiment 5 after coupling agent modified.
Fig. 2 be embodiment 6 antibiotic plastic sheet material to the antibiotic property of Escherichia coli with antibacterial agent additive amount figure of changing.
Transition graph of the antibacterial agent to 3% acetic acid of food simulants in antibiotic plastic sheet material when Fig. 3 is 40 DEG C in embodiment 7.
Transition graph of the antibacterial agent to 3% acetic acid of food simulants in antibiotic plastic sheet material when Fig. 4 is 70 DEG C in embodiment 7.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
Embodiment 1.
A kind of antibiotic plastic, including plastics and antibacterial agent, the weight percent of the antibacterial agent are 0.05~5wt%, this is anti-
Microbial inoculum includes nano antibacterial agent and inorganic antiseptic；Nano antibacterial agent is nano silver, Nanometer Copper, nano zine oxide or nano-silica
Change one of titanium or any two or more composition；Inorganic antiseptic is silver ion salt, salt containing zinc ion, copper ions
One of salt, salt containing magnesium ion, iron content ion salt, salt containing aluminium ion or titaniferous ion salt or any two or more combination
Object.
Wherein, the carrier of antibacterial agent is one of zeolite powder, conch meal, basic zirconium phosphate or any two or more combination
Object.
Wherein, plastics are polyolefin plastics.
Wherein, polyolefin plastics includes polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polylactic acid
Or one of polyvinyl alcohol or any two or more composition.
Wherein, antibiotic plastic further includes auxiliary agent.
Wherein, auxiliary agent is one of coupling agent, dispersing agent, ultraviolet absorber, antioxidant, plasticizer or light stabilizer
Or any two or more composition.
A kind of preparation method of above-mentioned antibiotic plastic, it is the following steps are included: antibacterial agent and plastics are uniformly mixed, then
Heating melting, and extruding pelletization are carried out, master batch is obtained, then master batch is formed a film using injection molding machine injection molding or inflation film manufacturing machine, obtains institute
State antibiotic plastic.
Wherein, the temperature of heating melting is 220 DEG C~260 DEG C.
Wherein, the process of granulation repeats 1~4 time.It repeats to be granulated and is conducive to be sufficiently mixed antibacterial agent and polyolefin plastics
Uniformly.
Wherein, antibiotic plastic is applied to food packaging applications.
Embodiment 2.
A kind of antibiotic plastic, including plastics and antibacterial agent, the weight percent of the antibacterial agent are 3wt%, the antibacterial agent packet
Include nano antibacterial agent and inorganic antiseptic；Nano antibacterial agent is nano silver；Inorganic antiseptic is silver ion salt.
Wherein, the carrier of antibacterial agent is zeolite powder.
Wherein, plastics are polyolefin plastics.
Wherein, polyolefin plastics includes polyethylene.
Wherein, antibiotic plastic further includes auxiliary agent.
Wherein, auxiliary agent is coupling agent.
A kind of preparation method of above-mentioned antibiotic plastic, it is the following steps are included: antibacterial agent and plastics are uniformly mixed, then
Heating melting, and extruding pelletization are carried out, master batch is obtained, then master batch is formed a film using injection molding machine injection molding or inflation film manufacturing machine, obtains institute
State antibiotic plastic.
Wherein, the temperature of heating melting is 240 DEG C.
Wherein, the process of granulation is repeated 2 times.It repeats to be granulated and is conducive to be sufficiently mixed antibacterial agent and polyolefin plastics
It is even.
Wherein, antibiotic plastic is applied to food packaging applications.
Embodiment 3.
A kind of antibiotic plastic, including plastics and antibacterial agent, the weight percent of the antibacterial agent are 0.05wt%, the antibacterial agent
Including nano antibacterial agent and inorganic antiseptic；Nano antibacterial agent is the composition of nano zine oxide and nano-titanium dioxide；It is inorganic
Antibacterial agent is the composition of salt containing zinc ion, copper ions salt and the salt containing magnesium ion.
Wherein, the carrier of antibacterial agent is the composition of conch meal and basic zirconium phosphate.
Wherein, plastics are polyolefin plastics.
Wherein, polyolefin plastics includes the composition of polypropylene, polystyrene and polyethylene terephthalate.
Wherein, antibiotic plastic further includes auxiliary agent.
Wherein, auxiliary agent is the composition of dispersing agent, ultraviolet absorber and antioxidant.
A kind of preparation method of above-mentioned antibiotic plastic, it is the following steps are included: antibacterial agent and plastics are uniformly mixed, then
Heating melting, and extruding pelletization are carried out, master batch is obtained, then master batch is formed a film using injection molding machine injection molding or inflation film manufacturing machine, obtains institute
State antibiotic plastic.
Wherein, the temperature of heating melting is 220 DEG C.
Wherein, the process of granulation is repeated 1 times.It repeats to be granulated and is conducive to be sufficiently mixed antibacterial agent and polyolefin plastics
It is even.
Wherein, antibiotic plastic is applied to food packaging applications.
Embodiment 4.
A kind of antibiotic plastic, including plastics and antibacterial agent, the weight percent of the antibacterial agent are 5wt%, the antibacterial agent packet
Include nano antibacterial agent and inorganic antiseptic；Nano antibacterial agent is the composition of Nanometer Copper, nano zine oxide and nano-titanium dioxide；
Inorganic antiseptic is the composition of salt containing magnesium ion, iron content ion salt, salt containing aluminium ion and titaniferous ion salt.
Wherein, the carrier of antibacterial agent is the composition of zeolite powder, conch meal and basic zirconium phosphate.
Wherein, plastics are polyolefin plastics.
Wherein, polyolefin plastics includes the composition of polyethylene terephthalate, polylactic acid and polyvinyl alcohol.
Wherein, antibiotic plastic further includes auxiliary agent.
Wherein, auxiliary agent is the composition of antioxidant, plasticizer and light stabilizer.
A kind of preparation method of above-mentioned antibiotic plastic, it is the following steps are included: antibacterial agent and plastics are uniformly mixed, then
Heating melting, and extruding pelletization are carried out, master batch is obtained, then master batch is formed a film using injection molding machine injection molding or inflation film manufacturing machine, obtains institute
State antibiotic plastic.
Wherein, the temperature of heating melting is 260 DEG C.Wherein, the process of granulation is repeated 4 times.It repeats to be granulated and is conducive to make to resist
Microbial inoculum and polyolefin plastics are sufficiently mixed uniformly.Wherein, antibiotic plastic is applied to food packaging applications.
Embodiment 5.
2% titanate coupling agent is poured into 50mL dehydrated alcohol, 5min (room temperature 26 is stirred by constant temperature blender with magnetic force
℃).After antibacterial agent (being loaded with silver ion salt and nano-titanium dioxide) is placed in 60 DEG C of vacuum oven dry 4.5h,
5g antibacterial agent is weighed to be added in coupling agent dilution.Then 20min is stirred on magnetic stirring apparatus, ultrasonic disperse 20min (is set
Determine temperature 60 C).Then, it is put into 80 DEG C of thermostat water baths after reaction 3h, rests on about 12h in draught cupboard, take out sample,
It is finely ground in mortar, kept dry.Antibacterial agent before modified after SEM comparison diagram, referring to Figure 1.
Embodiment 6.
Antibacterial agent (being loaded with nano silver) is uniformly mixed with low density polyethylene (LDPE) (LDPE), antibacterial agent mass percentage point
Not Wei 0.5%, 1% and 1.5%, by the material mixed be sent into Twin screw extruder in, material screw rod shearing, be kneaded and
The lower sufficiently fusion of conveying, most afterwards through die head extruding pelletization.This granulation process is repeated 2 times.
Twin screw extruder parameter setting: 1st area of barrel to 9 area's temperature be respectively as follows: 150 DEG C, 155 DEG C, 155 DEG C, 160 DEG C,
160℃,165℃,165℃,160℃,155℃；Die head temperature is 155 DEG C；Screw speed 150r/min.The master batch made is sent
Enter in injection molding machine, corresponding sheet material is obtained using the method for injection molding.1st area of injection molding machine~3 area's temperature are respectively 280 DEG C, 280
℃,275℃；Nozzle temperature is 195 DEG C.
Sheet material obtained above is subjected to anti-microbial property test to Escherichia coli, obtains the content of antibacterial agent to its antibiotic property
The influence of energy, is shown in Fig. 2.
Embodiment 7.
A kind of material is configured, inorganic antiseptic (being loaded with salt containing zinc ion) is uniformly mixed with low density polyethylene (LDPE) (LDPE),
Wherein inorganic antiseptic mass percentage is 1.5%.The material mixed is sent into Twin screw extruder, material is in screw rod
The lower sufficiently fusion of shearing, mixing and conveying, most afterwards through die head extruding pelletization.This granulation process is repeated twice.
Wherein, Twin screw extruder parameter setting: 1st area of barrel to 9 area's temperature be respectively as follows: 150 DEG C, 155 DEG C, 155 DEG C,
160℃,160℃,165℃,165℃,160℃,155℃；Die head temperature is 155 DEG C；Screw speed 150r/min.By what is made
Master batch is sent into injection molding machine, obtains corresponding sheet material using the method for injection molding.1st area of injection molding machine~3 area's temperature are respectively 280
DEG C, 280,275 DEG C；Nozzle temperature is 195 DEG C.
Migration of the zinc ion into 3% acetic acid in sheet material in antibacterial agent is studied at 40 DEG C and 70 DEG C, the results showed that, zinc
The migration of ion increase with time and progressivelyes reach balance, and is not above migration limitation 5mg/Kg as defined in EC regulations,
The migration results of middle zinc ion are shown in Fig. 3 and Fig. 4.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. a kind of antibiotic plastic, it is characterised in that: including plastics and antibacterial agent, the weight percent of the antibacterial agent is 0.05~
5wt%, the antibacterial agent include nano antibacterial agent and inorganic antiseptic；
The nano antibacterial agent is one of nano silver, Nanometer Copper, nano zine oxide or nano-titanium dioxide or two kinds any
Above composition；
The inorganic antiseptic is silver ion salt, salt containing zinc ion, copper ions salt, salt containing magnesium ion, iron content ion salt, contains
One of aluminium ion salt or titaniferous ion salt or any two or more composition.
2. a kind of antibiotic plastic according to claim 1, it is characterised in that: the carrier of the antibacterial agent is zeolite powder, shellfish
One of shell powder, basic zirconium phosphate or any two or more composition.
3. a kind of antibiotic plastic according to claim 1, it is characterised in that: the antibiotic plastic further includes auxiliary agent.
4. a kind of antibiotic plastic according to claim 3, it is characterised in that: the auxiliary agent is coupling agent, dispersing agent, ultraviolet
One of absorbent, antioxidant, plasticizer or light stabilizer or any two or more composition.
5. a kind of antibiotic plastic according to claim 1, it is characterised in that: the plastics are polyolefin plastics.
6. a kind of antibiotic plastic according to claim 5, it is characterised in that: the polyolefin plastics includes polyethylene, gathers
One of propylene, polystyrene, polyethylene terephthalate, polylactic acid or polyvinyl alcohol or any two or more group
Close object.
7. a kind of preparation method of antibiotic plastic described in claim 1 to 6 any one, it is characterised in that: it includes following
Step: antibacterial agent and plastics are uniformly mixed, and then carry out heating melting, and extruding pelletization, obtain master batch, then master batch is utilized
Injection molding machine injection molding or inflation film manufacturing machine film forming, obtain the antibiotic plastic.
8. a kind of preparation method of antibiotic plastic according to claim 7, it is characterised in that: the temperature of the heating melting
It is 220 DEG C~260 DEG C.
9. a kind of preparation method of antibiotic plastic according to claim 7, it is characterised in that: the process of the granulation repeats
1~4 time.
10. a kind of application of antibiotic plastic described in claim 1 to 6 any one, it is characterised in that: the antibiotic plastic is answered
For food packaging applications.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110744797A (en) * | 2019-09-24 | 2020-02-04 | 千年舟新材科技集团有限公司 | Antibacterial PP film and preparation method and application thereof |
| CN112812409A (en) * | 2021-01-26 | 2021-05-18 | 同曦集团有限公司 | Antibacterial, antiviral and mildewproof master batch, antibacterial, antiviral and mildewproof food packaging material and preparation method thereof |
| WO2021114539A1 (en) * | 2019-12-13 | 2021-06-17 | 佛山欧神诺陶瓷有限公司 | Antibacterial ceramic tile and preparation method therefor |
| CN113337012A (en) * | 2021-05-28 | 2021-09-03 | 北京联飞翔科技股份有限公司 | Composite antibacterial agent, antibacterial master batch containing composite antibacterial agent and preparation method of antibacterial master batch |
| WO2022078365A1 (en) * | 2020-10-15 | 2022-04-21 | 四川轻化工大学 | Preparation method for long-acting natural multifunctional additive and application of same |
| CN115028925A (en) * | 2022-06-24 | 2022-09-09 | 厦门冠颜塑化科技有限公司 | Antibacterial polyolefin composition |
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2019
- 2019-05-15 CN CN201910402539.2A patent/CN110256747A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110744797A (en) * | 2019-09-24 | 2020-02-04 | 千年舟新材科技集团有限公司 | Antibacterial PP film and preparation method and application thereof |
| CN110744797B (en) * | 2019-09-24 | 2022-07-26 | 千年舟新材科技集团股份有限公司 | Antibacterial PP film and preparation method and application thereof |
| WO2021114539A1 (en) * | 2019-12-13 | 2021-06-17 | 佛山欧神诺陶瓷有限公司 | Antibacterial ceramic tile and preparation method therefor |
| WO2022078365A1 (en) * | 2020-10-15 | 2022-04-21 | 四川轻化工大学 | Preparation method for long-acting natural multifunctional additive and application of same |
| GB2620482A (en) * | 2020-10-15 | 2024-01-10 | Sichuan Zhixiangyi Tech Co Ltd | Preparation method and application of long-acting natural multifunctional additive |
| CN112812409A (en) * | 2021-01-26 | 2021-05-18 | 同曦集团有限公司 | Antibacterial, antiviral and mildewproof master batch, antibacterial, antiviral and mildewproof food packaging material and preparation method thereof |
| CN113337012A (en) * | 2021-05-28 | 2021-09-03 | 北京联飞翔科技股份有限公司 | Composite antibacterial agent, antibacterial master batch containing composite antibacterial agent and preparation method of antibacterial master batch |
| CN115028925A (en) * | 2022-06-24 | 2022-09-09 | 厦门冠颜塑化科技有限公司 | Antibacterial polyolefin composition |
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