CN105440992A - Method for preparing adhesive for label - Google Patents
Method for preparing adhesive for label Download PDFInfo
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- CN105440992A CN105440992A CN201510901817.0A CN201510901817A CN105440992A CN 105440992 A CN105440992 A CN 105440992A CN 201510901817 A CN201510901817 A CN 201510901817A CN 105440992 A CN105440992 A CN 105440992A
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- tackiness agent
- preparation
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- label according
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Abstract
The invention relates to a method for preparing an adhesive for a label. The method comprises the steps that monomer butyl acrylate (BA), methyl acrylate (MA), butyl methacrylate (nBMA), acrylic acid (AA), acrylic acid 2-ethylhexyl acrylate 2-HEA and a solvent are mixed in a reaction container; N2 is introduced, heating is carried out, the temperature is raised to 80 DEG C to 80.5 DEG C, then an initiating agent is added, and the constant temperature is kept for 2 h to 2.5 h; then the remaining initiating agent is dropwise added, then a solvent is dropwise added, and reacting is kept for 135 min to 150 min after dropwise adding is finished; then cooling, washing, intermediate tank transferring, filtering, filling and curing are carried out, and the adhesive is obtained. The process is simple, the raw materials are easy to obtain, pollution is avoided, and the method is suitable for industrial production. The prepared adhesive has the advantages that primary viscous force is high, and curing speed is high; after being instantly pressurized, the label does not fall off or slide or warp, the viscous force is kept, and the adhesive has good adhesive property for most of packaging materials. The adhesive is convenient to use.
Description
Technical field
The invention belongs to the preparation field of tackiness agent, particularly a kind of preparation method of the tackiness agent for label.
Background technology
Glued joint (bonding, bonding, cementing, gluing) and refer to the technology that homogeneity or heterogeneous body surface stick with glue agent and link together to there is stress distribution continuous, lightweight, or sealing, the features such as most technological temperature is low.Glued joint the connection being specially adapted to unlike material, different thickness, ultra-thin specification and complex component.Glued joint RECENT DEVELOPMENTS the fastest, application industry is extremely wide, and has great effect to high-and-new science and technology progress and people's daily life improvement.Therefore, study, all kinds of tackiness agent of development and production is very important.
Along with going from bad to worse of global environment, people bring into use some environmentfriendly products gradually.Although tackiness agent is not really the huge Chemicals of a class, the harm of environment also be can not be ignored.The tackiness agent of those non-environment-friendly types will be abandoned gradually.Polyvinyl formal tackiness agent (being commonly called as " 107 glue "), due to containing free formaldehyde, is detrimental to health.Forbid already in developed country, but in China because it is cheap, so still have the suitable market share.But its consumption reduces gradually, will all eliminate soon.How to make the tackiness agent of non-environment-friendly type become environmental-protection type adhesive by modification is imperative work.A kind of tackiness agent replaced not containing formaldehyde in plywood making has been studied successfully by Japanese firm.Common urea formaldehyde and melamine tackiness agent contain the formaldehyde that human allergy can be caused to react, and intensity, the water tolerance of this tackiness agent are close with melamine tackiness agent with cost.In today that the cry of environmental protection grows to even greater heights, increasing people starts the development being devoted to biodegradable tackiness agent.The biological degradation of polymkeric substance has been come by hydrolysis and oxygenizement.The polymkeric substance that major part can be degraded contains degradable group, such as amido, hydroxyl, urea groups etc. on its main chain.React with two hydroxyl and ether, the polyester of synthesis containing methylol, as matrix, produces biodegradable tackiness agent, and they are also with containing the butyric ester, valerate, Mierocrystalline cellulose, starch ester etc. of hydroxyl as matrix, with sucrose ester as tackifier, produce the tackiness agent of energy biological degradation or hydrolysis.In addition, with starch or sulfonated ester for matrix, add the wax containing polarity, produce containing polarity, to the tackiness agent of water sensitive, unboiled water solution can be issued in the effect of water, reduction or the pollution eliminated environment when carrying out waste treatment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of the tackiness agent for label, and technique is simple, and raw material is easy to get, pollution-free, is applicable to suitability for industrialized production; It is high that the tackiness agent that the present invention prepares has initial bonding strength, and curing speed is fast, and label does not come off after exerting pressure instantaneously, not slippage, not warpage, hold tack, most wrapping material is had to the features such as good adhesiveproperties, is easy to use.
The preparation method of a kind of tackiness agent for label of the present invention, comprising:
(1) by monomer butyl acrylate BA, methyl acrylate MA, butyl methacrylate nBMA, vinylformic acid AA, vinylformic acid 2-ethyl hexyl: 2-HEA and solvent mix in reaction vessel;
(2) logical N
2and be heated to 80-80.5 DEG C, then add the initiator of 1/7 ~ 2/7, constant temperature keeps 2-2.5h, and then is added dropwise to residue initiator, and then drip solvent, dropwise rear maintenance reaction 135-150min, then cool, washing, medial launder transfer, filtration, fill, and solidification, to obtain final product.
Butyl acrylate BA in described step (1), methyl acrylate MA, butyl methacrylate nBMA, the mass ratio of vinylformic acid AA, 2-EHA 2-HEA is 40-50:10-16:2-5:0.001-0.05:2-5.
In described step (1), solvent is vinyl acetic monomer EtAc.
In step (2), the mass ratio of initiator total amount and monomer total amount is 6-8:500-800.
Dripping residue initiator in described step (2) is be added dropwise to complete in 5min.
In described step (2), initiator is dibenzoyl peroxide BPO; Solvent is toluene TO.
Dripping solvent in described step (2) is be added dropwise to complete in 40min.
In described step (2), washing is vinyl acetic monomer EtAc and toluene TO washing 3-5 time.
Being filtered into filter material in described step (2) is that non-woven fabrics filters, and filtration pressure is once 2.0Kg/cm
2below, differential pressure is 0.8Kg/cm
2.Be cured as in step (2) and add isocyanates solidifying agent and be cured; Wherein isocyanates solidifying agent is tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, 1, hexamethylene-diisocyanate, 1, one or more in 5-naphthalene diisocyanate, trimethylammonium 1,6-hexamethylene diisocyanate.
More tackiness agent of BA are harder, and the BA system of strong binding type sizing agent is more, although initial stage clinging power is not too high, As time goes on can increase.
AA's is more, and its tackiness agent polarity is higher, and firmly to also larger, thermotolerance is better, and clinging power is also higher, on the contrary, the occasion that AA consumption is few, its tackiness agent polarity is low, and flexibility is good, and clinging power also reduces; AA with few occasion, its tackiness agent hardness is little, and cohesive force is low, i.e. its confining force or determine the reductions such as loading performance.
NBMA is methacrylate-based monomer, and its effect can alleviate when using BPO series initiators the reaction that overlaps.The occasion that the initial stage addition of general BPO is more, initial reaction is very large, if but there is methacrylate-based monomer and acrylic ester monomer simultaneously, according to reactive size ratio, methacrylate-based monomer comparatively acrylic ester monomer first carries out polyreaction, and the polymerization reaction heat of the polyreaction ratio of specific heat acrylic ester monomer of methacrylate-based monomer is little, therefore initial stage heating is gentleer.
The occasion that MA uses many, the hardness of its tackiness agent is larger, and its cohesive force is also better, in the tackiness agent of label.
beneficial effect
The inventive method technique is simple, and raw material is easy to get, pollution-free, is applicable to suitability for industrialized production; It is high that the tackiness agent that the present invention prepares has initial bonding strength, and curing speed is fast, and label does not come off after exerting pressure instantaneously, not slippage, not warpage, hold tack, most wrapping material is had to the features such as good adhesiveproperties, is easy to use.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.The following initial bonding strength pressing GB/T4852-1999 working sample; GB/T4851 working sample confining force.
Embodiment 1
(1) by monomer butyl acrylate BA490Kg, methyl acrylate MA140Kg, butyl methacrylate nBMA35Kg, vinylformic acid AA0.18Kg, 2-EHA 2-HEA35Kg and solvent acetic acid ethyl ester 897Kg mix in reaction vessel;
(2) logical N
2and be heated to 80-80.5 DEG C, then add initiator and add-H1.88Kg and toluene TO19Kg, after stable system, constant temperature keeps 2h, then the mixing solutions of initiator dibenzoyl peroxide BPO4.68Kg and toluene TO28Kg is added dropwise in 5min, and then 40min is added dropwise to 132Kg toluene, dropwises rear maintenance reaction 135min, then cool, vinyl acetic monomer and toluene wash, medial launder transfer, filtration, fill, tolylene diisocyanate solidifies and get final product.
Embodiment 2
(1) by monomer butyl acrylate BA400Kg, methyl acrylate MA120Kg, butyl methacrylate nBMA30Kg, vinylformic acid AA0.18Kg, 2-EHA 2-HEA30Kg and solvent acetic acid ethyl ester 890Kg mix in reaction vessel;
(2) logical N
2and be heated to 80-80.5 DEG C, then add initiator and add-H1.88Kg and toluene TO20Kg, after stable system, constant temperature keeps 2h, then the mixing solutions of initiator dibenzoyl peroxide BPO4.68Kg and toluene TO30Kg is added dropwise in 5min, and then 40min is added dropwise to 122Kg toluene, dropwises rear maintenance reaction 135min, then cool, vinyl acetic monomer and toluene wash, medial launder transfer, filtration, fill, tolylene diisocyanate solidifies and get final product.
Claims (10)
1., for a preparation method for the tackiness agent of label, comprising:
(1) by monomer butyl acrylate BA, methyl acrylate MA, butyl methacrylate nBMA, vinylformic acid AA, vinylformic acid 2-ethyl hexyl: 2-HEA and solvent mix in reaction vessel;
(2) logical N
2and be heated to 80-80.5 DEG C, then add the initiator of 1/7 ~ 2/7, constant temperature keeps 2-2.5h, and then is added dropwise to residue initiator, and then drip solvent, dropwise rear maintenance reaction 135-150min, then cool, washing, medial launder transfer, filtration, fill, and solidification, to obtain final product.
2. the preparation method of a kind of tackiness agent for label according to claim 1, it is characterized in that: butyl acrylate BA in described step (1), methyl acrylate MA, butyl methacrylate nBMA, the mass ratio of vinylformic acid AA, 2-EHA 2-HEA is 40-50:10-16:2-5:0.001-0.05:2-5.
3. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: in described step (1), solvent is vinyl acetic monomer EtAc.
4. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: in step (2), the mass ratio of initiator total amount and monomer total amount is 6-8:500-800.
5. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: dripping residue initiator in described step (2) is be added dropwise to complete in 5min.
6. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: in described step (2), initiator is dibenzoyl peroxide BPO; Solvent is toluene TO.
7. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: dripping solvent in described step (2) is be added dropwise to complete in 40min.
8. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: in described step (2), washing is vinyl acetic monomer EtAc and toluene TO washing 3-5 time.
9. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: being filtered into filter material in described step (2) is that non-woven fabrics filters, and filtration pressure is once 2.0Kg/cm
2below, differential pressure is 0.8Kg/cm
2.
10. the preparation method of a kind of tackiness agent for label according to claim 1, is characterized in that: be cured as in described step (2) and add isocyanates solidifying agent and be cured; Wherein isocyanates solidifying agent is tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, 1, hexamethylene-diisocyanate, 1, one or more in 5-naphthalene diisocyanate, trimethylammonium 1,6-hexamethylene diisocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901817.0A CN105440992A (en) | 2015-12-08 | 2015-12-08 | Method for preparing adhesive for label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901817.0A CN105440992A (en) | 2015-12-08 | 2015-12-08 | Method for preparing adhesive for label |
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| Publication Number | Publication Date |
|---|---|
| CN105440992A true CN105440992A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510901817.0A Pending CN105440992A (en) | 2015-12-08 | 2015-12-08 | Method for preparing adhesive for label |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832101A (en) * | 2017-01-05 | 2017-06-13 | 无锡海特新材料研究院有限公司 | A kind of acrylic pressure-sensitive adhesivee of removable labeling and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693820A (en) * | 2009-10-30 | 2010-04-14 | 北京化工大学 | Methyl acrylate pressure-sensitive adhesive for LCD polarizer and preparation method thereof |
| CN101798491A (en) * | 2010-02-25 | 2010-08-11 | 北京高盟新材料股份有限公司 | Pressure sensitive adhesive for protective film and preparation method thereof |
| CN103214978A (en) * | 2012-01-18 | 2013-07-24 | 日东电工株式会社 | Translucent light-shielding tape |
-
2015
- 2015-12-08 CN CN201510901817.0A patent/CN105440992A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693820A (en) * | 2009-10-30 | 2010-04-14 | 北京化工大学 | Methyl acrylate pressure-sensitive adhesive for LCD polarizer and preparation method thereof |
| CN101798491A (en) * | 2010-02-25 | 2010-08-11 | 北京高盟新材料股份有限公司 | Pressure sensitive adhesive for protective film and preparation method thereof |
| CN103214978A (en) * | 2012-01-18 | 2013-07-24 | 日东电工株式会社 | Translucent light-shielding tape |
Non-Patent Citations (1)
| Title |
|---|
| 李和平编著: "《胶黏剂生产原理与技术》", 31 August 2009 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832101A (en) * | 2017-01-05 | 2017-06-13 | 无锡海特新材料研究院有限公司 | A kind of acrylic pressure-sensitive adhesivee of removable labeling and preparation method thereof |
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Application publication date: 20160330 |