CN113861901A - Modified polyvinyl acetate emulsion adhesive and preparation method thereof - Google Patents
Modified polyvinyl acetate emulsion adhesive and preparation method thereof Download PDFInfo
- Publication number
- CN113861901A CN113861901A CN202111224503.3A CN202111224503A CN113861901A CN 113861901 A CN113861901 A CN 113861901A CN 202111224503 A CN202111224503 A CN 202111224503A CN 113861901 A CN113861901 A CN 113861901A
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- acrylamide
- polyvinyl acetate
- ammonium persulfate
- vinyl acetate
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- 229920002689 polyvinyl acetate Polymers 0.000 title claims abstract description 31
- 239000011118 polyvinyl acetate Substances 0.000 title claims abstract description 31
- 239000000839 emulsion Substances 0.000 title claims abstract description 26
- 239000000853 adhesive Substances 0.000 title claims abstract description 25
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000178 monomer Substances 0.000 claims abstract description 35
- 239000011259 mixed solution Substances 0.000 claims abstract description 29
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 21
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 19
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 14
- 238000003860 storage Methods 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 15
- 238000003756 stirring Methods 0.000 description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical class CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 229920001807 Urea-formaldehyde Polymers 0.000 description 5
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 4
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
-
- 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
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/003—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
-
- 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
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
Abstract
The invention discloses a modified polyvinyl acetate emulsion adhesive and a preparation method thereof, and belongs to the technical field of polyvinyl acetate emulsion adhesives. Taking a proper amount of acrylamide, N-hydroxymethyl acrylamide, ammonium persulfate, vinyl acetate, acrylic acid, acrylic resin monomers and deionized water. Dissolving a proper amount of acrylamide and N-hydroxymethyl acrylamide in deionized water, putting the mixture into a reaction kettle, adding part of a mixed solution of vinyl acetate, acrylic acid and acrylic resin monomers and an ammonium persulfate solution to form a base material, heating to react for 20-40 min, reacting the rest of the mixed solution of acrylamide, N-hydroxymethyl acrylamide, vinyl acetate, acrylic acid and acrylic resin monomers and an ammonium persulfate solution in a continuous dropwise manner at a proper temperature for 5-7 h, cooling and discharging. The product has good storage stability and initial viscosity, and high curing speed, and the water resistance and the bonding strength of the product cured by adopting a specific curing agent are obviously improved.
Description
Technical Field
The invention belongs to the technical field of polyvinyl acetate emulsion adhesives, and particularly relates to a modified polyvinyl acetate emulsion adhesive and a preparation method thereof.
Background
The polyvinyl acetate emulsion adhesive is a thermoplastic adhesive prepared by emulsion polymerization of vinyl acetate (Vac) serving as a monomer in a dispersion medium, is also called polyvinyl acetate homopolymerization emulsion (PVac) and is commonly called white latex. Because of its advantages of fast curing speed, no pollution, excellent performance, convenient storage, etc., it is widely used in paper, wood processing industry and building industry, and is especially suitable for processing plywood, fine wood board, fiber board, etc. as wood adhesive. However, the conventional urea-formaldehyde resin adhesive serving as the main body of the current wood adhesive inevitably generates free formaldehyde in the production and use processes, and along with the improvement of health consciousness of people and the continuous expansion of the application field of urea-formaldehyde resin, the problems of environmental pollution and health hazard caused by the conventional urea-formaldehyde resin adhesive are gradually highlighted, so that the seeking of a formaldehyde-free adhesive for gradually replacing the urea-formaldehyde resin adhesive is in great tendency. The polyvinyl acetate emulsion adhesive has mature technology, various types and excellent bonding property of urea-formaldehyde resin, and has wide future development and application prospect.
Disclosure of Invention
One of the purposes of the invention is to provide an aldehyde-free polyvinyl acetate emulsion adhesive, and the modified polyvinyl acetate emulsion adhesive is characterized in that a plurality of acrylic monomers and vinyl acetate monomers are copolymerized to improve the performance of the copolymerization emulsion and reduce the cost. The second purpose of the invention is to provide a preparation method of the modified polyvinyl acetate emulsion adhesive. The technical scheme is as follows:
on one hand, the embodiment of the invention provides a modified polyvinyl acetate emulsion adhesive which is prepared from the following raw materials in parts by weight: 1-20 parts of acrylamide, 1-20 parts of N-hydroxymethyl acrylamide, 0-5 parts of ammonium persulfate, 50-100 parts of vinyl acetate, 1-20 parts of acrylic acid, 0-5 parts of acrylic resin monomer and 200-350 parts of deionized water.
On the other hand, the invention also provides a preparation method of the modified polyvinyl acetate emulsion adhesive, which specifically comprises the following steps:
(1) completely dissolving acrylamide and N-hydroxymethyl acrylamide required by reaction amount in deionized water, adding into a reactor, and continuously stirring;
(2) putting part of the mixed solution of vinyl acetate, acrylic acid and acrylic resin monomers and part of the ammonium persulfate solution into a reactor to form a bottom material, starting heating, and reacting at 70 +/-10 ℃ for 20-40 min until the mixture turns into milk white to form a seed emulsion;
(3) reacting the second acrylamide and N-hydroxymethyl acrylamide solution, the rest ammonium persulfate solution and the rest vinyl acetate, acrylic acid and acrylic resin monomer mixed solution in a continuous dropwise manner at the temperature for 5-7 h;
(4) and (3) after the dropwise addition is finished, preserving the heat for 20-50 min, then heating to 90 +/-5 ℃, preserving the heat for 1-2 h, then cooling and discharging, and thus obtaining a finished product.
In the step (2) of the embodiment of the present invention, the subsequent dropping must be performed until the primer is completely milky white, and the ammonium persulfate solution used as the initiator in the step (3) must be dropped first and then dropped.
Preferably, in the step (2) of the embodiment of the present invention, the reaction temperature is 70 to 80 ℃. The preferable temperature in the step (4) is 88-92 ℃.
In summary, the technical scheme provided by the embodiment of the invention has the following beneficial effects: compared with the prior art, the prepared modified polyvinyl acetate emulsion adhesive has the advantages of good storage stability, good initial adhesion and high curing speed, and the water resistance and the bonding strength of the adhesive cured by adopting a specific curing agent are both obviously improved. The raw materials adopted by the method are all aldehyde-free raw materials, free formaldehyde cannot be generated in the production and use processes, the comprehensive performance is excellent, and the method completely meets the environmental protection requirement.
Drawings
FIG. 1 is a diagram of a sample of a modified polyvinyl acetate emulsion made according to the present invention;
FIGS. 2 to 9 show the test reports of the modified polyvinyl acetate emulsion and the plywood prepared by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.
Example 1
The modified polyvinyl acetate formulation provided in example 1 consists of (parts by weight): 9 parts of acrylamide, 81 parts of vinyl acetate, 0.3 part of ammonium persulfate, 4 parts of N-hydroxymethyl acrylamide, 4 parts of acrylic acid, 2 parts of acrylic resin monomer and 300 parts of deionized water. The preparation method comprises the following steps:
1. accurately weighing 7.5 parts of acrylamide and 0.5 part of N-hydroxymethyl acrylamide, dissolving in 210 parts of deionized water, uniformly stirring until the acrylamide and the N-hydroxymethyl acrylamide are completely dissolved, and marking as a mixed solution A (218 parts in total, and adding all the mixed solution A as a bottom material into the reaction kettle).
2. 81 parts of vinyl acetate, 2 parts of acrylic resin monomer and 4 parts of acrylic acid were accurately weighed and mixed uniformly, and the mixture was designated as mixed monomer B (87 parts in total).
3. Accurately weighing 1.5 parts of acrylamide and 3.5 parts of N-hydroxymethyl acrylamide, dissolving in 50 parts of deionized water, uniformly stirring until the acrylamide and the N-hydroxymethyl acrylamide are completely dissolved, and marking as a mixed monomer C (55 parts in total, and all the monomers are used as subsequent dropwise added monomers).
4. 0.3 part of ammonium persulfate is dissolved in 40 parts of deionized water, and the mixture is uniformly stirred until the ammonium persulfate is completely dissolved, and the mixture is marked as a mixed solution D (40.3 parts in total).
5. Adding the whole mixed solution A into a reaction kettle, adding 9 parts of mixed monomer B under the stirring action, and then adding 8 parts of mixed solution D.
6. And (3) after all the materials are added, heating, keeping the temperature for 40 minutes when the temperature of the system is raised to about 75 ℃, dropwise adding the residual mixed solution B after the color is gradually changed into milk white without backflow (simultaneously meeting the requirement), and dropwise adding all the mixed solution C and the residual mixed solution D for about 5 hours.
7. After all monomers and the initiator are dripped, the temperature is kept for 45 minutes, then the temperature is raised to 88-91 ℃, and the temperature is kept for 1.5 hours.
8. After the reaction is finished, the temperature of the system is reduced to 40 ℃, and the material is discharged, thus obtaining the modified poly ethyl acetate emulsion.
The modified polyvinyl acetate prepared by the embodiment has good initial viscosity, good storage stability and no formaldehyde release, and the water resistance and the bonding strength are obviously improved after the modified polyvinyl acetate is cured by a specific curing agent. The comprehensive performance is excellent, and the requirements of environmental protection and use are completely met.
Example 2
The modified polyvinyl acetate formulation provided in example 2 comprises (in parts by weight): 8 parts of acrylamide, 80 parts of vinyl acetate, 0.3 part of ammonium persulfate, 4.5 parts of N-hydroxymethyl acrylamide, 5.5 parts of acrylic acid, 2 parts of acrylic resin monomer and 300 parts of deionized water. The preparation method comprises the following steps:
1. accurately weighing 6 parts of acrylamide and 0.7 part of N-hydroxymethyl acrylamide, dissolving in 210 parts of deionized water, uniformly stirring until the acrylamide and the N-hydroxymethyl acrylamide are completely dissolved, and marking as a mixed solution A (216.7 parts in total, and putting the mixed solution A into a reaction kettle as a bottom material).
2. 80 parts of vinyl acetate, 2 parts of acrylic resin monomer and 5.5 parts of acrylic acid were accurately weighed and mixed uniformly, and the mixture was designated as mixed monomer B (87.5 parts in total).
3. Accurately weighing 2 parts of acrylamide and 3.8 parts of N-methylol acrylamide, dissolving in 50 parts of deionized water, uniformly stirring until the acrylamide and the N-methylol acrylamide are completely dissolved, and marking as a mixed monomer C (55.8 parts in total and all as subsequent dropwise added monomers).
4. 0.3 part of ammonium persulfate is dissolved in 40 parts of deionized water, and the mixture is uniformly stirred until the ammonium persulfate is completely dissolved, and the mixture is marked as a mixed solution D (40.3 parts in total).
5. Adding the whole mixed solution A into a reaction kettle, adding 9 parts of mixed monomer B under the stirring action, and then adding 8 parts of mixed solution D.
6. And (3) after all the materials are added, heating, keeping the temperature for 40 minutes when the temperature of the system is raised to about 75 ℃, dropwise adding the residual mixed solution B after the color is gradually changed into milk white without backflow (simultaneously meeting the requirement), and dropwise adding all the mixed solution C and the residual mixed solution D for about 5 hours.
7. After all monomers and the initiator are dripped, the temperature is kept for 45 minutes, then the temperature is raised to 88-91 ℃, and the temperature is kept for 1.5 hours.
8. After the reaction is finished, the temperature of the system is reduced to 40 ℃, and the material is discharged, thus obtaining the modified poly ethyl acetate emulsion.
The modified polyvinyl acetate prepared by the embodiment has good initial viscosity, good storage stability and no formaldehyde release, and the water resistance and the bonding strength are obviously improved after the modified polyvinyl acetate is cured by a specific curing agent. The comprehensive performance is excellent, and the requirements of environmental protection and use are completely met.
Example 3
The modified polyvinyl acetate formulation provided in example 3 comprises (in parts by weight): 7 parts of acrylamide, 82 parts of vinyl acetate, 0.3 part of ammonium persulfate, 4.5 parts of N-hydroxymethyl acrylamide, 4.5 parts of acrylic acid, 2 parts of acrylic resin monomer and 300 parts of deionized water. The preparation method comprises the following steps:
1. accurately weighing 5.5 parts of acrylamide and 0.5 part of N-hydroxymethyl acrylamide, dissolving in 210 parts of deionized water, uniformly stirring until the acrylamide and the N-hydroxymethyl acrylamide are completely dissolved, and marking as a mixed solution A (216 parts in total serving as a bottom material and all put into a reaction kettle).
2. 82 parts of vinyl acetate, 2 parts of acrylic resin monomer and 4.5 parts of acrylic acid were weighed out accurately and mixed uniformly, and the mixture was designated as mixed monomer B (88.5 parts in total).
3. Accurately weighing 1.5 parts of acrylamide and 4 parts of N-methylol acrylamide, dissolving in 50 parts of deionized water, stirring uniformly until the acrylamide and the N-methylol acrylamide are completely dissolved, and marking as a mixed monomer C (55.5 parts in total, and all the monomers are used as subsequent dropwise added monomers).
4. 0.4 part of ammonium persulfate is dissolved in 40 parts of deionized water, and the mixture is uniformly stirred until the ammonium persulfate is completely dissolved, and the mixture is marked as a mixed solution D (40.4 parts in total).
5. Adding the whole mixed solution A into a reaction kettle, adding 9 parts of mixed monomer B under the stirring action, and then adding 8 parts of mixed solution D.
6. And (3) after all the materials are added, heating, keeping the temperature for 40 minutes when the temperature of the system is raised to about 75 ℃, dropwise adding the residual mixed solution B after the color is gradually changed into milk white without backflow (simultaneously meeting the requirement), and dropwise adding all the mixed solution C and the residual mixed solution D for about 5 hours.
7. After all monomers and the initiator are dripped, the temperature is kept for 45 minutes, then the temperature is raised to 88-91 ℃, and the temperature is kept for 1.5 hours.
8. After the reaction is finished, the temperature of the system is reduced to 40 ℃ and the material is discharged, thus obtaining the modified polyvinyl acetate emulsion.
Example 4
The prepared modified polyvinyl acetate emulsion is detected, and the test period, the test method, the test items and the test report are shown in the attached drawings. From the test results, in the modified polyvinyl acetate emulsion prepared by the invention, free formaldehyde, benzene, toluene, xylene and total volatile organic compounds completely meet the environmental protection requirement, and the adhesive strength for gluing and bonding also meets the relevant standard.
The modified polyvinyl acetate prepared by the embodiment has good initial viscosity, good storage stability and no formaldehyde release, and the water resistance and the bonding strength are obviously improved after the modified polyvinyl acetate is cured by a specific curing agent. The comprehensive performance is excellent, and the requirements of environmental protection and use are completely met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The modified polyvinyl acetate emulsion adhesive is characterized by being prepared from the following raw materials in parts by weight: 1-20 parts of acrylamide, 1-20 parts of N-hydroxymethyl acrylamide, 0-5 parts of ammonium persulfate, 50-100 parts of vinyl acetate, 1-20 parts of acrylic acid, 0-5 parts of acrylic resin monomer and 200-350 parts of deionized water.
2. The method for preparing the modified polyvinyl acetate emulsion adhesive according to claim 1, comprising the following steps:
(1) completely dissolving acrylamide and N-hydroxymethyl acrylamide required by reaction amount in deionized water, and then putting into a reactor;
(2) putting part of the mixed solution of vinyl acetate, acrylic acid and acrylic resin monomers and part of the ammonium persulfate solution into a reactor to form a base material, starting heating, and reacting at 70 +/-10 ℃ for 20-40 min until the base material changes color;
(3) reacting the rest acrylamide, the N-hydroxymethyl acrylamide solution, the rest ammonium persulfate solution and the rest mixed solution of vinyl acetate, acrylic acid and acrylic resin monomers at 70 +/-10 ℃ for 5-7 h in a continuous dropwise manner;
(4) and (3) after the dropwise addition is finished, preserving heat for 20-50 min, then heating to 90 +/-5 ℃, preserving heat for 1-2 h, then cooling and discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111224503.3A CN113861901A (en) | 2021-10-21 | 2021-10-21 | Modified polyvinyl acetate emulsion adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111224503.3A CN113861901A (en) | 2021-10-21 | 2021-10-21 | Modified polyvinyl acetate emulsion adhesive and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114316834A (en) * | 2022-03-04 | 2022-04-12 | 惠州艺都文化用品有限公司 | Thermal laminating film for printed matter and preparation method thereof |
| CN114958253A (en) * | 2022-06-25 | 2022-08-30 | 东莞市益和纸制品有限公司 | Environment-friendly glue for paperboard production and preparation process thereof |
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|---|---|---|---|---|
| JPS6169880A (en) * | 1984-09-12 | 1986-04-10 | Nippon Carbide Ind Co Ltd | Polyvinyl-acetate based aqueous adhesive |
| CN102433091A (en) * | 2011-12-31 | 2012-05-02 | 上海东和胶粘剂有限公司 | Laminated wood plate alignment adhesive-based adhesive and preparation method thereof |
| CN102746463A (en) * | 2011-04-27 | 2012-10-24 | 江苏尼高科技有限公司 | Grafted acrylic acid emulsion and redispersible latex powder and preparation method thereof |
| CN104292379A (en) * | 2014-09-25 | 2015-01-21 | 湖北省宏源药业科技股份有限公司 | Curing agent for modified urea-formaldehyde resin adhesives and preparation method thereof |
| CN106832085A (en) * | 2016-12-31 | 2017-06-13 | 上海巴德富实业有限公司 | A kind of high temperature resistant, high rigidity acrylate and vinyl acetate emulsion of color inhibition and preparation method thereof |
-
2021
- 2021-10-21 CN CN202111224503.3A patent/CN113861901A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169880A (en) * | 1984-09-12 | 1986-04-10 | Nippon Carbide Ind Co Ltd | Polyvinyl-acetate based aqueous adhesive |
| CN102746463A (en) * | 2011-04-27 | 2012-10-24 | 江苏尼高科技有限公司 | Grafted acrylic acid emulsion and redispersible latex powder and preparation method thereof |
| CN102433091A (en) * | 2011-12-31 | 2012-05-02 | 上海东和胶粘剂有限公司 | Laminated wood plate alignment adhesive-based adhesive and preparation method thereof |
| CN104292379A (en) * | 2014-09-25 | 2015-01-21 | 湖北省宏源药业科技股份有限公司 | Curing agent for modified urea-formaldehyde resin adhesives and preparation method thereof |
| CN106832085A (en) * | 2016-12-31 | 2017-06-13 | 上海巴德富实业有限公司 | A kind of high temperature resistant, high rigidity acrylate and vinyl acetate emulsion of color inhibition and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114316834A (en) * | 2022-03-04 | 2022-04-12 | 惠州艺都文化用品有限公司 | Thermal laminating film for printed matter and preparation method thereof |
| CN114958253A (en) * | 2022-06-25 | 2022-08-30 | 东莞市益和纸制品有限公司 | Environment-friendly glue for paperboard production and preparation process thereof |
| CN114958253B (en) * | 2022-06-25 | 2023-10-17 | 东莞市益和纸制品有限公司 | Environment-friendly glue for producing paperboards and preparation process thereof |
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