CN1306015A - Process for preparing high-ethylene ethylene vinylacetate latex - Google Patents
Process for preparing high-ethylene ethylene vinylacetate latex Download PDFInfo
- Publication number
- CN1306015A CN1306015A CN 00136186 CN00136186A CN1306015A CN 1306015 A CN1306015 A CN 1306015A CN 00136186 CN00136186 CN 00136186 CN 00136186 A CN00136186 A CN 00136186A CN 1306015 A CN1306015 A CN 1306015A
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- CN
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- Prior art keywords
- ethylene
- latex
- add
- vinyl acetate
- eva
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000005977 Ethylene Substances 0.000 title claims abstract description 41
- 239000004816 latex Substances 0.000 title claims abstract description 40
- 229920000126 latex Polymers 0.000 title claims abstract description 40
- 239000005038 ethylene vinyl acetate Substances 0.000 title claims description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 title claims description 8
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 239000000178 monomer Substances 0.000 claims abstract description 14
- 238000009775 high-speed stirring Methods 0.000 claims abstract description 13
- 239000003999 initiator Substances 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 12
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000084 colloidal system Substances 0.000 claims abstract description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- -1 polyoxyethylene thiazolinyl ethers Polymers 0.000 claims description 9
- 239000012874 anionic emulsifier Substances 0.000 claims description 6
- 229940117958 vinyl acetate Drugs 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 5
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 5
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 239000004159 Potassium persulphate Substances 0.000 claims description 4
- 239000012875 nonionic emulsifier Substances 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 235000019394 potassium persulphate Nutrition 0.000 claims description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 4
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 239000004160 Ammonium persulphate Substances 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 239000003223 protective agent Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 abstract description 2
- 239000006172 buffering agent Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 239000004836 Glue Stick Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
本发明属于高乙烯含量醋酸乙烯－乙烯胶乳的制备方法,该方法是把乙烯含量60%的固体EVA树脂溶到醋酸乙烯单体中,在高速搅拌下加入到含乳化剂、胶体稳定剂、缓冲剂的水中,在70－80℃下高速搅拌乳化,然后转移到高压釜中,通入乙烯单体到2.5－4.0MPa压力,加入引发剂水溶液,在70±5℃正常速度搅拌下进行乳液聚合,并不断补加引发剂溶液,得到乙烯含量达到24%的VAE胶乳。The invention belongs to the preparation method of vinyl acetate-ethylene latex with high ethylene content. The method is to dissolve solid EVA resin with 60% ethylene content into vinyl acetate monomer, and add emulsifier, colloid stabilizer, buffering agent under high-speed stirring. Stir and emulsify at a high speed at 70-80°C, then transfer to an autoclave, feed ethylene monomer to a pressure of 2.5-4.0MPa, add an aqueous initiator solution, and carry out emulsion polymerization at a normal speed of 70±5°C , and continuously added the initiator solution to obtain the VAE latex with 24% ethylene content.
Description
The invention belongs to the polymer latex class, is the preparation method as the vinyl acetate-ethylene latex (VAE latex) of polymer mortar glue etc. specifically.
Polymer latex does not contain organic volatile matter, environment is not produced pollution, its application is increasingly extensive, construction industry especially, and coating for internal and external wall develops to water-based paint, polymer mortar latex is being played a great role aspect the building energy conservation body of wall, polymer mortar latex mainly uses VAE latex, and this latex has the ethene chain link on main chain, plays self-plasticizing action, reduce minimum film-forming temperature, improve low-temperature performance.Ethylene content is high more, and minimum film-forming temperature is low more, and low-temperature performance is good more.VAE latex can also be made fibre finish, cigarette glue stick, paper-plastic composite adhesive except that above purposes.
VAE latex all has production both at home and abroad, its synthetic method adopts general emulsion polymerisation process, depend primarily on the pressure of ethene in the polymeric kettle because of ethylene content, existing product ethylene content is a synthetic under the pressure of the 4MPa left and right sides about 15%, high again ethylene content, polymeric kettle pressure is very high, general reactor just can not be used, newer patent (U.S.5,629,370) claim the VAE latex that can synthesize the 5-40% ethylene content, but in the example, polymerization pressure 4.5MPa, ethylene content is the highest also to have only 21%, synthetic VAE latex under 20MPa pressure, ethylene content can reach (U.S.3,534,009) more than 50%, this autoclave is just very expensive, industrial very difficult realization promptly enables to make and, and the latex price is also very high.Another method (U.S.3,347,811) be molten in organic solvent (as toluene) the ethylene-vinyl acetate resin (EVA) of ethylene content more than 50%, under high-speed stirring, join in the water that contains emulsifying agent, form emulsion, steam and desolventize, this method has been avoided the difficulty of the equipment aspect that high pressure brings, have toxic solvent and lot of energy but consume, improved the latex cost.Also having a method is that ethylene content 50% above solid EVA resin is directly joined under high temperature, high pressure, high-speed stirring in the water that contains emulsifying agent, prepares latex (U.S.4,151,133), runs into the difficulty of high-tension apparatus equally.Chinese patent: 99121796.9 proposed a kind of solid EVA resin dissolves method of (rather than being dissolved in the organic solvent) in vinyl acetate between to for plastic-acrylate monomer compound, under high-speed stirring, carry out letex polymerization, obtain a kind of latex with shell-core structure, nuclear is EVA, and its ethene has long sequential structure, is fit to do soil coagulant, the latex that this method obtains, because of the restriction of EVA solubleness in monomer mixture, total ethylene content is not high, about 10%.
When the novel preparation method that the purpose of this invention is to provide a kind of high-ethylene ethylene vinylacetate latex, this method are 4MPa at the polymeric kettle ethylene pressure, the VAE latex of synthesizing ethylene content about 24%; When ethylene pressure 2.5MPa, the VAE latex of synthesizing ethylene content 15% reaches the effect of conventional polymerization processes under ethylene pressure 4MPa.This latex has shell-core structure, examines to be the high ethylene-vinyl acetate copolymer of ethylene content, has the long sequential structure of ethylene-vinyl, and shell is the low vinyl acetate-ethylene copolymer of ethylene content.In this latex, ethylene content reaches 24%.
Realize that the method that above-mentioned purpose adopted is molten in Vinyl Acetate Monomer the solid EVA resin of ethylene content 60%, under high-speed stirring, join in the water that contains emulsifying agent, deflocculant, buffer reagent, 70-80 ℃ of following high-speed stirring emulsification, transfer in the autoclave then, feed vinyl monomer to 2.5-4.0MPa pressure, add the part initiator solution, under stirring, 70 ± 5 ℃ of usual dispatchs carry out letex polymerization, and constantly add initiator solution, obtain the VAE latex of high ethylene content.
Ethene-vinyl acetate (EVA) the resin ethylene content that the present invention uses is 60%, to guarantee a certain amount of ethene chain link being arranged and good solubility in vinyl acetate between to for plastic.The emulsifying agent that uses is the mixture of non-ionic type and anionic, and nonionic emulsifier is selected polyoxyethylene thiazolinyl ethers, polyoxyethylene polylol carboxylic acid esters, polyol carboxylate's class for use, preferentially selects polyoxyethylene thiazolinyl ethers for use.The anionic emulsifier that uses has alkylsurfuric acid salt, alkyl sodium sulfonate etc., preferentially selects sodium lauryl sulphate for use.Colloid protective agent is selected polyvinyl alcohol (PVA) for use; Deflocculant is selected trisodium phosphate for use.Radical initiator can be with Potassium Persulphate or ammonium persulphate.
Basic recipe of the present invention is:
Component percentage consumption, %
EVA resin 5-8
Vinyl acetate between to for plastic 32-37
Ethene 2.5-4MPa (pressure)
Nonionic emulsifier 1-3
Anionic emulsifier 0.5-2
PVA 1-3
Deflocculant 0.1-0.4
Initiator 0.1-0.4
The deionized water surplus
Technological process of the present invention: at first solid EVA resin particle under agitation is dissolved in a certain amount of Vinyl Acetate Monomer in 60 ℃, makes the EVA-monomer solution.Add deionized water, PVA in the high-speed stirring reactor, be heated to 90 ℃ of dissolvings under stirring, temperature is reduced to 70 ℃, adds emulsifying agent and deflocculant, stirring and dissolving.Then the EVA-monomer solution of heat is added drop-wise in the reaction under high-speed stirring, stirring velocity 5000-8000 rev/min, temperature remains on 70 ± 5 ℃, add half an hour, transfer in the autoclave then and stir, stirring velocity 100-300 rev/min, feed vinyl monomer, reach 2.5-4.0MPa pressure, when temperature is raised to 60 ℃, add the part initiator solution, carry out letex polymerization, continue to be warmed up to 75 ± 2 ℃, constantly add remaining initiator solution then, added in about 4 hours, and 78 ± 2 ℃ of reactions 1 hour, obtained required latex again.
The present invention avoids using the more equipment of high pressure, adopts solid EVA resin dissolves in Vinyl Acetate Monomer, and letex polymerization is carried out in high-speed stirring emulsification then under common stirring, obtain the VAE latex of the unavailable high ethylene content of ordinary emulsion polymerization.The ethene chain link of this latex has long sequential structure, has better low-temperature performance.
Embodiment 1:
The prescription that uses is as follows:
Component percentage consumption, % actual amount, gram
EVA resin 7 70
Vinyl acetate between to for plastic 34 340
Ethene (pressure) 4 (MPa) 4 (MPa)
OP-10 1.2 12
Sodium lauryl sulphate 0.8 8
PVA 2.3 23
Trisodium phosphate 0.16 1.6
Potassium Persulphate 0.16 1.6
Deionized water 44 440
Concrete building-up process: at first the solid EVA resin particle of 70 gram ethylene content 60% under agitation is dissolved into 340 in 60 ℃ and restrains in the Vinyl Acetate Monomers, make the EVA-monomer solution.Add 385 gram deionized waters, 23 gram PVA in the high-speed stirring reactor, be heated to 90 ℃ of dissolvings under stirring, temperature is reduced to 70 ℃, adds 12 gram OP-10 and 1.6 gram trisodium phosphates, stirring and dissolving.Then the EVA-monomer solution of heat is added drop-wise in the reactor under high-speed stirring, 7000 rev/mins of stirring velocitys, temperature remains on 70 ± 5 ℃, stir and carry out emulsification half an hour, transfer in the autoclave then and stir, 120 rev/mins of stirring velocitys, feed vinyl monomer, reach 4MPa pressure, when temperature is raised to 60 ℃, add the persulfate aqueous solution (1.6 grams are dissolved in the 55 gram water) of 20 grams 3%, carry out letex polymerization, when continuing to be warmed up to 75 ± 2 ℃, after reaction is carried out 30 minutes, constantly add remaining initiator solution, added in 4 hours, reacted 1 hour down at 78 ± 2 ℃ again, obtain solids content 55%, the latex of ethylene content 24%.And the VAE latex that common polymerization process obtains, ethylene content about 15%.
Embodiment 2
Press the method for example 1, just ethylene pressure is respectively 2.5MPa, 3.0MPa and 3.5MPa, and the latex ethylene content that obtains is respectively 15%, 18% and 22%.As seen, under the pressure of 2.5MPa, just can obtain the common VAE latex of ethylene content 15%.
Embodiment 3:
Press the method for embodiment 1, just replace sodium lauryl sulphate, replace Potassium Persulphate, the latex solid content 54% that obtains, ethylene content 23.5% with ammonium persulphate with sodium laurylsulfonate.
Embodiment 4:
Press the method for embodiment 1, just solid EVA resin demand is 5%, the latex solid content 53% that obtains, ethylene content 20.5%.
Claims (3)
1. the preparation method of a high-ethylene ethylene vinylacetate latex, it is characterized in that ethene-vinyl acetate (EVA) the resin ethylene content that uses is 60%, the emulsifying agent that uses is the mixture of non-ionic type and anionic, nonionic emulsifier is selected polyoxyethylene thiazolinyl ethers, polyoxyethylene polylol carboxylic acid esters, polyol carboxylate's class for use, preferentially selects polyoxyethylene thiazolinyl ethers for use; The anionic emulsifier that uses has alkylsurfuric acid salt, alkyl sodium sulfonate etc., preferentially selects sodium lauryl sulphate for use; Colloid protective agent is selected polyvinyl alcohol (PVA) for use; Deflocculant is selected trisodium phosphate for use; Radical initiator can be with Potassium Persulphate or ammonium persulphate;
Basic recipe is:
Component percentage consumption, %
EVA resin 5-8
Vinyl acetate between to for plastic 32-37
Ethene 2.5-4MPa (pressure)
Nonionic emulsifier 1-3
Anionic emulsifier 0.5-2
PVA 1-3
Deflocculant 0.1-0.4
Initiator 0.1-0.4
The deionized water surplus
Technological process: at first solid EVA resin particle under agitation is dissolved in the Vinyl Acetate Monomer in 60 ℃, make the EVA-monomer solution, in the high-speed stirring reactor, add deionized water, PVA, be heated to 90 ℃ of dissolvings under stirring, temperature is reduced to 70 ℃, add emulsifying agent and deflocculant, stirring and dissolving; Then the EVA-monomer solution of heat is added drop-wise in the reaction under high-speed stirring, stirring velocity 5000-8000 rev/min, temperature remains on 70 ± 5 ℃, add half an hour, transfer in the autoclave then and stir, stirring velocity 100-300 rev/min, feed vinyl monomer, reach 2.5-4.0MPa pressure, when temperature is raised to 60 ℃, add the part initiator solution, carry out letex polymerization, continue to be warmed up to 75 ± 2 ℃, constantly add remaining initiator solution then, added in 4 hours, and 78 ± 2 ℃ of reactions 1 hour, obtained required latex again.
2. the preparation method of high-ethylene ethylene vinylacetate latex as claimed in claim 1 is characterized in that the emulsifying agent that uses is OP-10.
3. the preparation method of high-ethylene ethylene vinylacetate latex as claimed in claim 1 is characterized in that the anionic emulsifier that uses is sodium lauryl sulphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001361864A CN1163533C (en) | 2000-12-27 | 2000-12-27 | Preparation method of vinyl acetate-ethylene latex with high ethylene content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001361864A CN1163533C (en) | 2000-12-27 | 2000-12-27 | Preparation method of vinyl acetate-ethylene latex with high ethylene content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1306015A true CN1306015A (en) | 2001-08-01 |
| CN1163533C CN1163533C (en) | 2004-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001361864A Expired - Fee Related CN1163533C (en) | 2000-12-27 | 2000-12-27 | Preparation method of vinyl acetate-ethylene latex with high ethylene content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163533C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031075B (en) * | 2009-09-27 | 2013-02-27 | 曲靖宏程工贸有限公司 | Environmentally-friendly energy-saving cigarette adhesive and production method thereof |
| CN106543325A (en) * | 2015-09-16 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of method for preparing low-viscosity EVA emulsions |
| CN112062973A (en) * | 2020-09-23 | 2020-12-11 | 长春工业大学 | A kind of emulsification method of ethylene-vinyl acetate copolymer |
| CN112280496A (en) * | 2020-10-21 | 2021-01-29 | 江苏共创人造草坪股份有限公司 | Water-based thermoplastic adhesive and application thereof in artificial turf |
| CN115991813A (en) * | 2021-10-20 | 2023-04-21 | 中国石油化工股份有限公司 | Application of emulsifier in increasing molecular weight of ethylene-vinyl acetate copolymer emulsion |
-
2000
- 2000-12-27 CN CNB001361864A patent/CN1163533C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031075B (en) * | 2009-09-27 | 2013-02-27 | 曲靖宏程工贸有限公司 | Environmentally-friendly energy-saving cigarette adhesive and production method thereof |
| CN106543325A (en) * | 2015-09-16 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of method for preparing low-viscosity EVA emulsions |
| CN112062973A (en) * | 2020-09-23 | 2020-12-11 | 长春工业大学 | A kind of emulsification method of ethylene-vinyl acetate copolymer |
| CN112062973B (en) * | 2020-09-23 | 2023-08-25 | 内蒙古浩普科技有限公司 | Emulsification method of ethylene-vinyl acetate copolymer |
| CN112280496A (en) * | 2020-10-21 | 2021-01-29 | 江苏共创人造草坪股份有限公司 | Water-based thermoplastic adhesive and application thereof in artificial turf |
| CN115991813A (en) * | 2021-10-20 | 2023-04-21 | 中国石油化工股份有限公司 | Application of emulsifier in increasing molecular weight of ethylene-vinyl acetate copolymer emulsion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1163533C (en) | 2004-08-25 |
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