CN109666426A - A kind of medical conductive pressure sensitive adhesive and preparation method thereof - Google Patents
A kind of medical conductive pressure sensitive adhesive and preparation method thereof Download PDFInfo
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- CN109666426A CN109666426A CN201811591310.XA CN201811591310A CN109666426A CN 109666426 A CN109666426 A CN 109666426A CN 201811591310 A CN201811591310 A CN 201811591310A CN 109666426 A CN109666426 A CN 109666426A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to technical field of polymer materials, especially a kind of medical conductive pressure sensitive adhesive is made of: 100 parts of pressure-sensitive adhesive emulsion each material of following parts by weight；4~10 parts of conductive black；0.3~0.7 part of dispersing agent.The invention also discloses its preparation processes: S1, preparing pressure-sensitive adhesive emulsion；S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, and obtains product.The present invention has the advantages that adhesive property is strong, there is good initial bonding strength, peeling force and initial bonding strength, realize well balanced between each adhesive property；It is emulsion acrylic ester pressure-sensitive VOC free, non-toxic and safe, non-stimulated relative to solvent-type acrylic ester pressure-sensitive, it is more suitable for current environmental requirement；Dispersing agent and conductive black are added in pressure sensitive adhesive, so that the conductive energy of pressure sensitive adhesive, can be used for medical treatment and stick the fixed electrode use in face.
Description
Technical field
The present invention relates to technical field of polymer materials, especially a kind of medical conductive pressure sensitive adhesive and preparation method thereof.
Background technique
Pressure sensitive adhesive refers to only needing slightly application finger pressure or slight pressurization can just make the appearance for being glued material wet simultaneously
And can be Nian Jie with by viscous material securely, to produce a kind of more strongly adherent adhesive.It is used since pressure sensitive adhesive has
Many advantages such as convenient, stability is good, preparation simplicity, therefore all obtained widely in the every field of medical and health care system
Using.At present the use scope of medical pressure sensitive adhesive include treatment of wounds, bonding bio-medical instrument, transdermal drug release patch,
All various aspects such as tags,medical and medical adhesive tape.
In the medical pressure sensitive adhesive of all multiple types, pressure-sensitive acrylate has two big advantages: first is that esters of acrylic acid
Pressure sensitive adhesive does not need to add other additives, is the adhesive of one pack system, avoids and additive and potential safety problem is added,
And pressure-sensitive acrylate can be as the product used immediately, therefore using product made from emulsion polymerization or polymerisation in solution
With great preparation advantage；Second is that different requirements can be prepared by adjusting content and the component of comonomer
The acrylate pressure-sensitive adhesive of energy, therefore also there is very powerful advantage in flexibility.
As the requirement now to medical pressure sensitive adhesive performance is more and more, increasingly wider, medical pressure sensitive adhesive is in addition to that will meet
Adhesive property (initial bonding strength, peeling force and holding power etc.) outside, will also have different bells and whistles according to different purposes, such as
The pressure sensitive adhesive pasted on the skin must be non-stimulated and non-toxic to skin；Pressure sensitive adhesive for transdermal drug release cannot draw
The degradation for playing drug and its excipient, will not react with drug ingedient, and stability is eager to excel.
There is the phenomenons of adhesive property difference for current most of aqueous medical pressure sensitive adhesives, and commonly pressure sensitive adhesive does not have and leads
Electrical property, application field are restricted.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides a kind of medical conductive pressure sensitive adhesive and its preparation side
Method.
The purpose of the present invention is achieved through the following technical solutions:
A kind of medical conductive pressure sensitive adhesive is made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
4~10 parts of conductive black；
0.3~0.7 part of dispersing agent.
A kind of medical conductive pressure sensitive adhesive, is made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
7 parts of conductive black；
0.5 part of dispersing agent.
Further, 35~45 parts of soft monomers, 2~5 parts of hard monomers, 2~5 are contained in every 100 parts of pressure-sensitive adhesive emulsions
Part functional monomer, 0.1~0.3 part of initiator, 0.05~0.2 part of crosslinking agent, 1~3 part of emulsifier, 2~5 parts of tackifying resins,
Surplus is deionized water.
Further, 40 parts of soft monomers, 3.5 parts of hard monomers, 3.5 parts of functions are contained in every 100 parts of pressure-sensitive adhesive emulsions
Property monomer, 0.2 part of initiator, 0.15 part of crosslinking agent, 2 parts of emulsifiers, 3.5 parts of tackifying resins, 47.15 parts of deionized waters.
Further, the soft monomer is one of butyl acrylate, Isooctyl acrylate monomer or a variety of combinations；It is described
Hard monomer is methyl methacrylate；The function monomer is one of acrylic acid, hydroxy-ethyl acrylate or a variety of combinations；
The crosslinking agent is carboxylic butyl propyleneglycol acid esters；The initiator is azo-compound；The emulsifier is reactive emulsifier；Institute
Stating tackifying resin is hydrogenated rosin.
A kind of preparation method of medical conductive pressure sensitive adhesive, comprising the following steps:
S1, pressure-sensitive adhesive emulsion is prepared；
S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；
S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, and is produced
Product.
Further, in step S3, high speed dispersion stirring mixing speed be 1000~2000rpm, vacuum degree be less than-
0.098MPa, temperature control is at 25~35 DEG C, 40~80min of time.
The invention has the following advantages that
1, the pressure sensitive adhesive polymer molecular weight in the present invention is high, and adhesive property is strong, have good initial bonding strength, peeling force with
Initial bonding strength realizes well balanced between each adhesive property.
It is 2, emulsion acrylic ester pressure-sensitive VOC free, non-toxic and safe, non-stimulated relative to solvent-type acrylic ester pressure-sensitive,
It is more suitable for current environmental requirement.
3, dispersing agent and conductive black is added in the present invention in pressure sensitive adhesive, so that the conductive energy of pressure sensitive adhesive, can be used for
Medical treatment sticks the fixed electrode in face and uses.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but protection scope of the present invention is not limited to following institute
It states.
[embodiment 1]
A kind of medical conductive pressure sensitive adhesive is made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
4 parts of conductive black；
0.7 part of dispersing agent.
Further, 45 parts of soft monomers, 2 parts of hard monomers, 5 parts of functional lists are contained in every 100 parts of pressure-sensitive adhesive emulsions
Body, 0.1 part of initiator, 0.2 part of crosslinking agent, 1 part of emulsifier, 5 parts of tackifying resins, surplus is deionized water.
Further, the soft monomer is one of butyl acrylate, Isooctyl acrylate monomer or a variety of combinations；It is described
Hard monomer is methyl methacrylate；The function monomer is one of acrylic acid, hydroxy-ethyl acrylate or a variety of combinations；
The crosslinking agent is carboxylic butyl propyleneglycol acid esters；The initiator is azo-compound；The emulsifier is reactive emulsifier；Institute
Stating tackifying resin is hydrogenated rosin.
A kind of preparation method of medical conductive pressure sensitive adhesive, comprising the following steps:
S1, pressure-sensitive adhesive emulsion is prepared；
S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；
S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, high speed point
The mixing speed for dissipating stirring is 1000rpm, and vacuum degree is less than -0.098MPa, and temperature control obtains product in 35 DEG C, time 80min.
[embodiment 2]
A kind of medical conductive pressure sensitive adhesive is made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
7 parts of conductive black；
0.5 part of dispersing agent.
Further, 40 parts of soft monomers, 3.5 parts of hard monomers, 3.5 parts of functions are contained in every 100 parts of pressure-sensitive adhesive emulsions
Property monomer, 0.2 part of initiator, 0.15 part of crosslinking agent, 2 parts of emulsifiers, 3.5 parts of tackifying resins, 47.15 parts of deionized waters.
Further, the soft monomer is one of butyl acrylate, Isooctyl acrylate monomer or a variety of combinations；It is described
Hard monomer is methyl methacrylate；The function monomer is one of acrylic acid, hydroxy-ethyl acrylate or a variety of combinations；
The crosslinking agent is carboxylic butyl propyleneglycol acid esters；The initiator is azo-compound；The emulsifier is reactive emulsifier；Institute
Stating tackifying resin is hydrogenated rosin.
A kind of preparation method of medical conductive pressure sensitive adhesive, comprising the following steps:
S1, pressure-sensitive adhesive emulsion is prepared；
S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；
S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, high speed point
The mixing speed for dissipating stirring is 1500rpm, and vacuum degree is less than -0.098MPa, and temperature control obtains product in 30 DEG C, time 60min.
[embodiment 3]
A kind of medical conductive pressure sensitive adhesive is made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
10 parts of conductive black；
0.3 part of dispersing agent.
Further, 35 parts of soft monomers, 5 parts of hard monomers, 2 parts of functional lists are contained in every 100 parts of pressure-sensitive adhesive emulsions
Body, 0.3 part of initiator, 0.05 part of crosslinking agent, 3 parts of emulsifiers, 2 parts of tackifying resins, surplus is deionized water.
Further, the soft monomer is one of butyl acrylate, Isooctyl acrylate monomer or a variety of combinations；It is described
Hard monomer is methyl methacrylate；The function monomer is one of acrylic acid, hydroxy-ethyl acrylate or a variety of combinations；
The crosslinking agent is carboxylic butyl propyleneglycol acid esters；The initiator is azo-compound；The emulsifier is reactive emulsifier；Institute
Stating tackifying resin is hydrogenated rosin.
A kind of preparation method of medical conductive pressure sensitive adhesive, comprising the following steps:
S1, pressure-sensitive adhesive emulsion is prepared；
S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；
S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, high speed point
The mixing speed for dissipating stirring is 2000rpm, and vacuum degree is less than -0.098MPa, and temperature control obtains product in 25 DEG C, time 40min.
[embodiment 4]
A kind of medical conductive pressure sensitive adhesive is made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
8 parts of conductive black；
0.7 part of dispersing agent.
Further, 42 parts of soft monomers, 4 parts of hard monomers, 4 parts of functional lists are contained in every 100 parts of pressure-sensitive adhesive emulsions
Body, 0.2 part of initiator, 0.2 part of crosslinking agent, 2 parts of emulsifiers, 3 parts of tackifying resins, surplus is deionized water.
Further, the soft monomer is one of butyl acrylate, Isooctyl acrylate monomer or a variety of combinations；It is described
Hard monomer is methyl methacrylate；The function monomer is one of acrylic acid, hydroxy-ethyl acrylate or a variety of combinations；
The crosslinking agent is carboxylic butyl propyleneglycol acid esters；The initiator is azo-compound；The emulsifier is reactive emulsifier；Institute
Stating tackifying resin is hydrogenated rosin.
A kind of preparation method of medical conductive pressure sensitive adhesive, comprising the following steps:
S1, pressure-sensitive adhesive emulsion is prepared；
S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；
S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, high speed point
The mixing speed for dissipating stirring is 1800rpm, and vacuum degree is less than -0.098MPa, and temperature control obtains product in 33 DEG C, time 50min.
Conductive pressure sensitive adhesive obtained in the various embodiments described above is subjected to conductivity detection, measures its resistance value with multimeter,
Shown in testing result table specific as follows:
| Pressure sensitive adhesive resistance value (103kΩ) | |
| Embodiment 1 | 9.8 |
| Embodiment 2 | 3.2 |
| Embodiment 3 | 7.5 |
| Embodiment 4 | 4.3 |
As seen from the above table, in embodiment 2, the resistance value of pressure sensitive adhesive is minimum, that is to say, that conductivity highest is best real
Apply example.Each embodiment conductivity is preferable, meets the standard that medical treatment sticks the fixed electrode in face.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of medical conductive pressure sensitive adhesive, it is characterised in that: be made of each material of following parts by weight:
100 parts of pressure-sensitive adhesive emulsion；
4~10 parts of conductive black；
0.3~0.7 part of dispersing agent.
2. a kind of medical conductive pressure sensitive adhesive according to claim 1, it is characterised in that: by each material group of following parts by weight
At:
100 parts of pressure-sensitive adhesive emulsion；
7 parts of conductive black；
0.5 part of dispersing agent.
3. a kind of medical conductive pressure sensitive adhesive according to claim 1 or claim 2, it is characterised in that: every 100 parts of pressure-sensitive adhesive emulsions
In contain 35~45 parts of soft monomers, 2~5 parts of hard monomers, 2~5 parts of functional monomers, 0.1~0.3 part of initiator, 0.05~0.2
Part crosslinking agent, 1~3 part of emulsifier, 2~5 parts of tackifying resins, surplus is deionized water.
4. a kind of medical conductive pressure sensitive adhesive according to claim 3, it is characterised in that: in every 100 parts of pressure-sensitive adhesive emulsions
Contain 40 parts of soft monomers, 3.5 parts of hard monomers, 3.5 parts of functional monomers, 0.2 part of initiator, 0.15 part of crosslinking agent, 2 parts of emulsifications
Agent, 3.5 parts of tackifying resins, 47.15 parts of deionized waters.
5. a kind of medical conductive pressure sensitive adhesive according to claim 3, it is characterised in that: the soft monomer be butyl acrylate,
One of Isooctyl acrylate monomer or a variety of combinations；The hard monomer is methyl methacrylate；The function monomer is third
One of olefin(e) acid, hydroxy-ethyl acrylate or a variety of combinations；The crosslinking agent is carboxylic butyl propyleneglycol acid esters；The initiator is
Azo-compound；The emulsifier is reactive emulsifier；The tackifying resin is hydrogenated rosin.
6. a kind of preparation method of medical conductive pressure sensitive adhesive, it is characterised in that: the following steps are included:
S1, pressure-sensitive adhesive emulsion is prepared；
S2, the dispersing agent for adding proportional quantities into pressure-sensitive adhesive emulsion, stir evenly；
S3, conductive black is added into the mixed liquor of pressure-sensitive adhesive emulsion and dispersing agent, high speed dispersion stirs evenly, and obtains product.
7. a kind of preparation method of medical conductive pressure sensitive adhesive according to claim 6, it is characterised in that: in step S3, high speed
The mixing speed of dispersion stirring is 1000~2000rpm, and vacuum degree is less than -0.098MPa, temperature control at 25~35 DEG C, the time 40~
80min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591310.XA CN109666426A (en) | 2018-12-20 | 2018-12-20 | A kind of medical conductive pressure sensitive adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591310.XA CN109666426A (en) | 2018-12-20 | 2018-12-20 | A kind of medical conductive pressure sensitive adhesive and preparation method thereof |
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| CN109666426A true CN109666426A (en) | 2019-04-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111607343A (en) * | 2020-07-06 | 2020-09-01 | 上海宗特化工有限公司 | Conductive water-based pressure-sensitive adhesive and preparation method thereof |
| CN113372825A (en) * | 2021-06-25 | 2021-09-10 | 中船重工黄冈水中装备动力有限公司 | Conductive impregnating glue for flexible graphite bipolar plate and preparation method thereof |
| CN115820199A (en) * | 2022-12-09 | 2023-03-21 | 浙江工业大学 | Modified black talc antibacterial conductive pressure-sensitive adhesive, medical electrode slice and preparation method thereof |
-
2018
- 2018-12-20 CN CN201811591310.XA patent/CN109666426A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111607343A (en) * | 2020-07-06 | 2020-09-01 | 上海宗特化工有限公司 | Conductive water-based pressure-sensitive adhesive and preparation method thereof |
| CN111607343B (en) * | 2020-07-06 | 2022-02-08 | 上海宗特化工有限公司 | Conductive water-based pressure-sensitive adhesive and preparation method thereof |
| CN113372825A (en) * | 2021-06-25 | 2021-09-10 | 中船重工黄冈水中装备动力有限公司 | Conductive impregnating glue for flexible graphite bipolar plate and preparation method thereof |
| CN113372825B (en) * | 2021-06-25 | 2022-06-24 | 中船重工黄冈水中装备动力有限公司 | Conductive impregnating glue for flexible graphite bipolar plate and preparation method thereof |
| CN115820199A (en) * | 2022-12-09 | 2023-03-21 | 浙江工业大学 | Modified black talc antibacterial conductive pressure-sensitive adhesive, medical electrode slice and preparation method thereof |
| CN115820199B (en) * | 2022-12-09 | 2024-05-03 | 浙江工业大学 | Modified black talcum antibacterial conductive pressure-sensitive adhesive, medical electrode slice and preparation method thereof |
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Address after: 510000 Guangzhou High-tech Industrial Development Zone, Guangzhou, Guangdong Province, No. 31 Kefeng Road, Science City, No. 606, Building G5, New Materials Innovation Park, South China Applicant after: Guangzhou DuPont New Material Technology Co., Ltd Address before: 510000 Guangzhou High-tech Industrial Development Zone, Guangzhou, Guangdong Province, No. 31 Kefeng Road, Science City, No. 606, Building G5, New Materials Innovation Park, South China Applicant before: GUANGZHOU DUBAGN MATERIAL SCIENCE & TECHNOLOGY Co.,Ltd. |
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Application publication date: 20190423 |