CN110343486A - A kind of process using chitosan preparation express delivery list adhesive - Google Patents
A kind of process using chitosan preparation express delivery list adhesive Download PDFInfo
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- CN110343486A CN110343486A CN201910585324.9A CN201910585324A CN110343486A CN 110343486 A CN110343486 A CN 110343486A CN 201910585324 A CN201910585324 A CN 201910585324A CN 110343486 A CN110343486 A CN 110343486A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C08G81/024—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G
- C08G81/028—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G containing polyamide sequences
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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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
- C09J105/00—Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00
- C09J105/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
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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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
- C08K2003/3081—Aluminum sulfate
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Abstract
The invention discloses a kind of processes using chitosan preparation express delivery list adhesive, it is related to adhesive sticker processing technique field, the following steps are included: the chemical modification of (1) chitosan, the preparation of (2) auxiliary material, the preparation of (3) adhesive；The adhesive property and stripping performance of institute's preparing adhesive of the present invention are moderate, not only can guarantee secured stickup of the express delivery singly in express delivery packaging, but also can ensure that being completely exfoliated for when express delivery list removes express delivery list, to meet the service performance demand of express delivery single pair adhesive.
Description
Technical field:
The present invention relates to adhesive sticker processing technique fields, and in particular to a kind of to prepare express delivery list adhesive using chitosan
Process.
Background technique:
With the rapid development of China's electric business, delivery industry to the requirement of express delivery list stickup adhesive also increasingly
Height, the adhesive property of adhesive directly determine the service condition of express delivery list.During express transportation, it often will appear express delivery list
Corrugation, alice even obscission, and can be generated when removing express delivery list after express delivery is distributed and be difficult to pack upper stripping completely from express delivery
From the problem of, this be all due to the service performance of express delivery list adhesive it is bad caused by.
Need to be provided simultaneously with good adhesive property and fissility as a kind of express delivery list adhesive that service performance is excellent
Can, this is to needing to improve existing adhesive.It is now more and more also, in order to improve the safety in utilization of adhesive
Adhesive using water as diluent, so as to avoid using organic solvent as toxicity existing for diluent and pollution environment
Problem.
Summary of the invention:
Technical problem to be solved by the present invention lies in provide a kind of technique using chitosan preparation express delivery list adhesive
Method obtains adhesive property and excellent fast of stripping performance by being used cooperatively for modification to chitosan and auxiliary material
Pass single adhesive.
The following technical solution is employed for the technical problems to be solved by the invention to realize:
A kind of process using chitosan preparation express delivery list adhesive, comprising the following steps:
(1) chemical modification of chitosan: chitosan is dissolved in aqueous acetic acid, adds polyglutamic acid and dense sulphur
Acid, and it is heated to 70-80 DEG C of generation esterification, 5-10 DEG C of heat preservation is cooled to the cooling rate of 5 DEG C/min after reaction
It stands, filtering precipitating washes 2 times, obtains modification of chitosan；
(2) preparation of auxiliary material: polyaluminium sulfate, precipitated silica and isomerous tridecanol polyoxyethylene ether are mixed equal
It is even, obtain auxiliary material；
(3) preparation of adhesive: modification of chitosan and auxiliary material being added into water, is sufficiently mixed, and recycle microwave reactor
Microwave treatment stops 5min after microwave treatment 3min, stops 5min after microwave treatment 3min again, and so on, make at microwave
Reason reaches 9-15min total time, and when microwave treatment installs condenser pipe additional to avoid moisture evaporation, natural cooling after microwave treatment
To room temperature to get adhesive.
The volumetric concentration of the aqueous acetic acid is 2%.
The chitosan, polyglutamic acid, the concentrated sulfuric acid mass ratio be 30-50:10-30:0.5-3.
The polyaluminium sulfate, precipitated silica, isomerous tridecanol polyoxyethylene ether mass ratio be 1-5:1-5:
0.5-2。
The modification of chitosan, auxiliary material mass ratio be 10-20:0.5-5, the dosage of water is to contain consolidating for institute's preparing adhesive
Amount reaches 70-85%.
The microwave frequency of the microwave reactor is 2450MHz, microwave power 500-800W.
The specific surface area of the precipitated silica is in 150m2/ g or more.
The present invention is further changed also using precipitated silica as carrier by load neopentylglycol diglycidyl ether
The service performance of kind institute's preparing adhesive, specific technical solution are as follows:
A kind of process using chitosan preparation express delivery list adhesive, comprising the following steps:
(1) chemical modification of chitosan: chitosan is dissolved in aqueous acetic acid, adds polyglutamic acid and dense sulphur
Acid, and it is heated to 70-80 DEG C of generation esterification, 5-10 DEG C of heat preservation is cooled to the cooling rate of 5 DEG C/min after reaction
It stands, filtering precipitating washes 2 times, obtains modification of chitosan；
(2) pretreatment of precipitated silica: precipitated silica being added into neopentylglycol diglycidyl ether, heating
100-110 DEG C of return stirring, then cooled to room temperature；
(3) preparation of auxiliary material: by polyaluminium sulfate, precipitated silica after pretreatment and isomerous tridecanol polyoxy second
Alkene ether is uniformly mixed, and obtains auxiliary material；
(4) preparation of adhesive: modification of chitosan and auxiliary material being added into water, is sufficiently mixed, and recycle microwave reactor
Microwave treatment stops 5min after microwave treatment 3min, stops 5min after microwave treatment 3min again, and so on, make at microwave
Reason reaches 9-15min total time, and when microwave treatment installs condenser pipe additional to avoid moisture evaporation, natural cooling after microwave treatment
To room temperature to get adhesive.
The neopentylglycol diglycidyl ether, precipitated silica mass ratio be 0.5-5:5-15.
The beneficial effects of the present invention are:
(1) present invention is handled by chemical modification of the polyglutamic acid to chitosan, is assigning the same of chitosan hydrophilic
When also enhance the adhesive property of chitosan, and stripping performance ensure that by hydrophilic imparting.
(2) present invention is by the preparation of the auxiliary material come the usability of modified synergic chitosan preparing adhesive to improve
Can, so that it is met the use demand of express delivery list.
(3) for the present invention using polyaluminium sulfate as auxiliary agent, polyaluminium sulfate is routinely used as flocculating agent used in water processing to use, and
The addition of polyaluminium sulfate in the present invention is the service performance of the preparing adhesive in order to improve.
(4) viscosity of the invention by microwave treatment preparing adhesive to regulate and control, so as to improve its adhesive property and removing
Performance.
(5) adhesive property of institute's preparing adhesive of the present invention and stripping performance are moderate, both can guarantee that express delivery was singly packed in express delivery
On secured stickup, and can ensure that being completely exfoliated for when express delivery list removes express delivery list, to meet express delivery single pair adhesive
Service performance demand.
Specific embodiment:
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
Chitosan in following embodiment and reference examples selects the purity of Weifang Ying Ke marine organism material Co., Ltd
98% or more chitosan, polyglutamic acid select the cosmetics-stage polyglutamic acid of Nanjing Xuan Kai Bioisystech Co., Ltd,
Polyaluminium sulfate selects the high-quality polyaluminium sulfate of Le Bang material for water treatment Co., Ltd, Qinyang City, and precipitated silica is selected too
The specific surface area 180m of Xin Hong Chemical Co., Ltd., storehouse city2The precipitated silica of/g, 325 mesh of mesh number.
Embodiment 1
(1) chemical modification of chitosan: 42g chitosan is dissolved in the aqueous acetic acid of volumetric concentration 2%, is added
23g polyglutamic acid and the 0.85g concentrated sulfuric acid, and 75 DEG C of generation esterification 3h are heated to, after reaction with the drop of 5 DEG C/min
Warm speed is cooled to 5 DEG C of heat preservations and stands 30min, and filtering precipitating washes 2 times, obtains modification of chitosan；
(2) preparation of auxiliary material: 5g polyaluminium sulfate, 3g precipitated silica and 1g isomerous tridecanol polyoxyethylene ether are mixed
It closes uniformly, obtains auxiliary material；
(3) preparation of adhesive: 60g modification of chitosan and 10g auxiliary material being added into water, is sufficiently mixed, and recycle microwave
Frequency 2450MHz, the microwave reactor microwave treatment that microwave power is 700W, stop 5min after microwave treatment 3min, micro- again
Stop 5min after wave processing 3min, and so on, make to reach 9min microwave treatment total time, install additional when microwave treatment condenser pipe with
Avoid moisture evaporation, after microwave treatment cooled to room temperature to get solid content 80% adhesive.
Embodiment 2
It is control with embodiment 1, setting will be adjusted to the embodiment 2 of 12min microwave treatment total time, remaining operates and implements
Example 1 is identical.
Embodiment 3
It is control with embodiment 1, setting increases the pretreated embodiment 3 of precipitated silica, remaining operation and embodiment 1
It is identical.
(1) chemical modification of chitosan: 42g chitosan is dissolved in the aqueous acetic acid of volumetric concentration 2%, is added
23g polyglutamic acid and the 0.85g concentrated sulfuric acid, and 75 DEG C of generation esterification 3h are heated to, after reaction with the drop of 5 DEG C/min
Warm speed is cooled to 5 DEG C of heat preservations and stands 30min, and filtering precipitating washes 2 times, obtains modification of chitosan；
(2) 5g precipitated silica the pretreatment of precipitated silica: is added into 1.5g neopentylglycol diglycidyl ether
Silicon heats 100-110 DEG C of return stirring, then cooled to room temperature；
(3) preparation of auxiliary material: 5g polyaluminium sulfate, 3g precipitated silica and 1g isomerous tridecanol polyoxyethylene ether are mixed
It closes uniformly, obtains auxiliary material；
(4) preparation of adhesive: 60g modification of chitosan and 10g auxiliary material being added into water, is sufficiently mixed, and recycle microwave
Frequency 2450MHz, the microwave reactor microwave treatment that microwave power is 700W, stop 5min after microwave treatment 3min, micro- again
Stop 5min after wave processing 3min, and so on, make to reach 9min microwave treatment total time, install additional when microwave treatment condenser pipe with
Avoid moisture evaporation, after microwave treatment cooled to room temperature to get solid content 80% adhesive.
Reference examples 1
With embodiment 1 be control, the reference examples 1 for not adding polyaluminium sulfate when preparing auxiliary material are set, remaining operation with
Embodiment 1 is identical.
Reference examples 2
It is control with embodiment 1, the reference examples 2 without microwave treatment is set, remaining operation and the complete phase of embodiment 1
Together.
Reference examples 3
It is control with embodiment 1, is arranged with the mixture replacing modification of chitosan of equivalent chitosan and polyglutamic acid
Reference examples 3, remaining operation are identical with embodiment 1.
Be utilized respectively embodiment 1-3, reference examples 1-3 prepares adhesive, and test its service performance, test result such as table 1
It is shown.
Test method:
(1) initial bonding strength is tested: referring to GB/T 4852-2002 method B, adhesive being spread evenly across wide 25mm, length
Tilt angle is lain on the PET film of 100mm, after drying is on 21 ° 30 ' of tack device, by No. 14 steel balls of a standard from
Rolling section is helped to roll down at the 100mm of inclined surface, the distance that record steel ball is rolled in test section, 2 groups of test group number, every group of test 5
It is secondary, it is averaged.
(2) holding power is tested: referring to GB/T 4851-1984, adhesive being spread evenly across to the PET of wide 25mm, long 70mm
On film, then PET film coated face sticked on sample board, is vertically fallen on test stand after back pressure 3 times with the pressure roller of 2kg, lower end
The counterweight of 1kg is hung, the time that record sample completely disengages, 3 groups of test group number, is averaged.
(3) 180 ° of peel strength tests: referring to GB/T 2792-1998, adhesive is spread evenly across wide 25mm, length
On the PET film of 100mm, then PET film coated face sticked on sample board, turning pressing roller manually and roll back and forth three times with 2kg is put
Pulling force peel test is carried out to sample after setting 10min, test speed 300mm/min records sample 180 ° of removings from test board
Reading when getting off parallel testing four times, is averaged.
The service performance test result of 1 embodiment institute preparing adhesive of table
| Group | Tack (cm) | Holding power (h) | 180 ° of peel strengths (N/cm) |
| Embodiment 1 | 2.3 | > 72 | 4.3 |
| Embodiment 2 | 1.9 | > 72 | 4.2 |
| Embodiment 3 | 1.4 | > 72 | 3.8 |
| Reference examples 1 | 2.8 | 61 | 4.9 |
| Reference examples 2 | 3.5 | 43 | 6.1 |
| Reference examples 3 | 5.2 | 14 | 8.3 |
Tack distance is closer, and the holding power time is longer, illustrates that adhesive property is better；180 ° of peel strengths are smaller, explanation
Stripping performance is better.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of process using chitosan preparation express delivery list adhesive, it is characterised in that: the following steps are included:
(1) chemical modification of chitosan: chitosan is dissolved in aqueous acetic acid, adds polyglutamic acid and the concentrated sulfuric acid, and
It is heated to 70-80 DEG C of generation esterification, 5-10 DEG C of heat preservation is cooled to the cooling rate of 5 DEG C/min after reaction and is stood,
Filtering precipitating, washes 2 times, obtains modification of chitosan；
(2) preparation of auxiliary material: polyaluminium sulfate, precipitated silica and isomerous tridecanol polyoxyethylene ether are uniformly mixed, obtained
To auxiliary material；
(3) preparation of adhesive: modification of chitosan and auxiliary material being added into water, is sufficiently mixed, and recycle microwave reactor microwave
It handles, stops 5min after microwave treatment 3min, stop 5min after microwave treatment 3min again, and so on, keep microwave treatment total
Time reaches 9-15min, and when microwave treatment installs condenser pipe additional to avoid moisture evaporation, naturally cools to room after microwave treatment
Temperature is to get adhesive.
2. the process according to claim 1 using chitosan preparation express delivery list adhesive, it is characterised in that: described
The volumetric concentration of aqueous acetic acid is 2%.
3. the process according to claim 1 using chitosan preparation express delivery list adhesive, it is characterised in that: described
Chitosan, polyglutamic acid, the concentrated sulfuric acid mass ratio be 30-50:10-30:0.5-3.
4. the process according to claim 1 using chitosan preparation express delivery list adhesive, it is characterised in that: described
Polyaluminium sulfate, precipitated silica, isomerous tridecanol polyoxyethylene ether mass ratio be 1-5:1-5:0.5-2.
5. the process according to claim 1 using chitosan preparation express delivery list adhesive, it is characterised in that: described
Modification of chitosan, auxiliary material mass ratio be 10-20:0.5-5, the dosage of water is that the solid content of institute's preparing adhesive is made to reach 70-
85%.
6. the process according to claim 1 using chitosan preparation express delivery list adhesive, it is characterised in that: described
The microwave frequency of microwave reactor is 2450MHz, microwave power 500-800W.
7. the process according to claim 1 using chitosan preparation express delivery list adhesive, it is characterised in that: described
The specific surface area of precipitated silica is in 150m2/ g or more.
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| CN201910585324.9A CN110343486B (en) | 2019-07-01 | 2019-07-01 | Process method for preparing express delivery single adhesive by using chitosan |
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|---|---|---|---|
| CN201910585324.9A CN110343486B (en) | 2019-07-01 | 2019-07-01 | Process method for preparing express delivery single adhesive by using chitosan |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130046055A1 (en) * | 2011-08-18 | 2013-02-21 | Basf Se | Process for producing an aqueous binder system |
| US20150147468A1 (en) * | 2013-11-25 | 2015-05-28 | University Of Maryland, Office Of Technology Commercialization | Quick-drying, tacky polymer film compositions and methods of use |
| CN107163863A (en) * | 2017-06-23 | 2017-09-15 | 界首市众鑫科技服务有限公司 | A kind of book cover rubber adhesive and preparation method thereof |
| CN107964388A (en) * | 2017-08-30 | 2018-04-27 | 安徽省德邦瓷业有限公司 | A kind of domestic ceramic product sale label adhesive |
-
2019
- 2019-07-01 CN CN201910585324.9A patent/CN110343486B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130046055A1 (en) * | 2011-08-18 | 2013-02-21 | Basf Se | Process for producing an aqueous binder system |
| US20150147468A1 (en) * | 2013-11-25 | 2015-05-28 | University Of Maryland, Office Of Technology Commercialization | Quick-drying, tacky polymer film compositions and methods of use |
| CN107163863A (en) * | 2017-06-23 | 2017-09-15 | 界首市众鑫科技服务有限公司 | A kind of book cover rubber adhesive and preparation method thereof |
| CN107964388A (en) * | 2017-08-30 | 2018-04-27 | 安徽省德邦瓷业有限公司 | A kind of domestic ceramic product sale label adhesive |
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Denomination of invention: A Process Method for Preparing Express Single Adhesive Using Chitosan Effective date of registration: 20230612 Granted publication date: 20201110 Pledgee: Huaiyuan County Sub branch of Postal Savings Bank of China Co.,Ltd. Pledgor: ANHUI HUAKAI LIGHT INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2023980043535 |
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