CN104946171A - Temperature sensitive adhesive - Google Patents
Temperature sensitive adhesive Download PDFInfo
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- CN104946171A CN104946171A CN201510138016.3A CN201510138016A CN104946171A CN 104946171 A CN104946171 A CN 104946171A CN 201510138016 A CN201510138016 A CN 201510138016A CN 104946171 A CN104946171 A CN 104946171A
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- temperature
- side chain
- temperature sensibility
- crystalline polymer
- tackiness agent
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Abstract
The temperature sensitive adhesive contains tackifier and a side chain crystallinity polymer, the adhesive strength reduces when the temperature is below the melting point of the side chain crystallinity polymer, the softening point of the tackifier is higher than 140 DEG C. And the temperature sensitive adhesive comprises, by weight, 100 parts of side chain crystallinity polymer, and 40 to 100 parts of tackifier. The proportion of the side chain crystallinity polymer in the temperature sensitive adhesive can be moderately reduced while the adhesiveness is kept, so the adhesiveness can fully reduces to raise the strippability when the temperature is below the melting point.
Description
Technical field
The present invention relates to temperature sensibility tackiness agent.
Background technology
In the manufacturing process of flat-panel monitor (FPD) etc., the temporary fixed middle use adhesive sheet, self adhesive tape etc. of the substrate be made up of glass, plastics etc.For self adhesive tape used in such purposes etc., in being peeled off again by the self adhesive tape temporarily pasted, require easy separability.
As being suitable for temporary fixed self adhesive tape, applicant has developed the temperature sensibility self adhesive tape recorded in patent documentation 1 formerly.In temperature sensibility self adhesive tape, binder layer contains side chain crystalline polymer, if be cooled to the temperature of the fusing point lower than side chain crystalline polymer, then side chain crystalline polymer generation crystallization, bounding force reduces thus.
But, even if use the existing temperature sensibility self adhesive tape recorded in patent documentation 1, the also damaged substrate when peeling off sometimes.Under these circumstances, in order to peel off when not damaged substrate, the temperature (such as 5 DEG C) be cooled to lower than room temperature (23 DEG C) is needed.Therefore, for existing temperature sensibility self adhesive tape, need the technique of the temperature be cooled to lower than room temperature, result, needs equipment, environment, concomitantly there is with it the situation that cost raises.When peeling off temperature sensibility self adhesive tape from the substrate under the high-temperature atmosphere being exposed to more than 100 DEG C together with temperature sensibility self adhesive tape, this problem highly significant.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 9-251923 publication
Summary of the invention
The problem that invention will solve
Problem of the present invention is the temperature sensibility tackiness agent providing a kind of separability excellence.
Solve the method for problem
Temperature sensibility tackiness agent of the present invention contains tackifier and side chain crystalline polymer, the bounding force of temperature sensibility tackiness agent of the present invention reduces at the temperature of the fusing point lower than above-mentioned side chain crystalline polymer, the softening temperature of above-mentioned tackifier is more than 140 DEG C, and relative to side chain crystalline polymer 100 weight part, the content of above-mentioned tackifier is 40 ~ 100 weight parts.
Invention effect
According to the present invention, there is the effect of separability excellence.
Embodiment
< temperature sensibility tackiness agent >
Below, the temperature sensibility tackiness agent involved by an embodiment of the invention is explained.
The temperature sensibility tackiness agent of present embodiment contains side chain crystalline polymer, and the bounding force of the temperature sensibility tackiness agent of present embodiment reduces at the temperature of the fusing point lower than side chain crystalline polymer.
(side chain crystalline polymer)
Side chain crystalline polymer is the polymkeric substance with fusing point, at a temperature lower than its melting point crystallization occurs, and undergoes phase transition at temperature more than fusing point and demonstrate mobility.That is, side chain crystalline polymer has temperature sensibility, namely reversibly produces crystalline state and flow state accordingly with temperature variation.Thereby, it is possible to reversibly cause to the imparting of temperature sensibility tackiness agent and temperature variation the physical property bonding-do not bond accordingly.
Fusing point refers to via certain balancing processing and makes the specific part of the polymkeric substance being integrated into ordered arrangement at first become the temperature of state of disarray, is the value utilizing differential heat scan calorimeter (DSC) to carry out measuring with the condition determination of 10 DEG C/min and obtain.
The ratio that the temperature sensibility tackiness agent of present embodiment reduces with the bounding force when crystallization occurs at lower than the temperature of fusing point side chain crystalline polymer contains side chain crystalline polymer.Namely, the temperature sensibility tackiness agent of present embodiment contains side chain crystalline polymer as main component, therefore when temperature sensibility tackiness agent will be peeled off from adherend, if by temperature sensibility adhesive cools to the temperature lower than the fusing point of side chain crystalline polymer, then side chain crystalline polymer generation crystallization, bounding force reduces thus.In addition, if temperature sensibility tackiness agent to be heated to the temperature of more than the fusing point of side chain crystalline polymer, then side chain crystalline polymer demonstrates mobility, and bounding force recovers thus, therefore, it is possible to reuse.
The fusing point of side chain crystalline polymer is preferably more than 24 DEG C, is more preferably more than 25 DEG C, more preferably more than 26 DEG C.Thus, there is crystallization in side chain crystalline polymer, therefore, it is possible to carry out room temperature stripping under room temperature (23 DEG C).As the higher limit of fusing point, be preferably less than 60 DEG C.Fusing point can be adjusted by the composition etc. changing side chain crystalline polymer.
As long as side chain crystalline polymer and temperature variation reversibly produce the polymkeric substance of crystalline state and flow state accordingly, be then not particularly limited, but preferably comprise the multipolymer of other monomers of reactive F compound and formation side chain crystalline polymer.Thus, if by temperature sensibility adhesive cools to the temperature lower than the fusing point of side chain crystalline polymer, then side chain crystalline polymer generation crystallization thus the bounding force of temperature sensibility tackiness agent reduce, and also there is resulting from the release property of fluorine cpd, therefore, it is possible to make bounding force fully reduce, thus easily can peel off from adherend.
Reactive F compound refers to the fluorine cpd having and demonstrate reactive functional group.As demonstrating reactive functional group, can enumerate such as, vinyl, allyl group, (methyl) acrylic, (methyl) acryl, (methyl) acryloxy etc. have the group of ethylenical unsaturated double bonds; Epoxy group(ing) (comprising glycidyl and oxirane ring alkyl); Sulfydryl; Methanol-based; Carboxyl; Silanol base; Phenolic group; Amino; Hydroxyl etc.
As the concrete example of reactive F compound, the compound etc. shown in following general formula (I) can be enumerated.
[changing 1]
R
1-CF
3(I)
[in formula, R
1represent group CH
2=CHCOOR
2-or CH
2=C (CH
3) COOR
2-(in formula, R
2represent alkylidene group.)。]
In general formula (I), as R
2shown alkylidene group, can enumerate such as, the alkylidene group etc. of the straight or branched of the carbonatomss 1 ~ 6 such as methylene radical, ethylidene, trimethylene, methyl ethylidene, propylidene, tetramethylene, pentamethylene, hexa-methylene.
As the concrete example of the compound shown in general formula (I), following formula (Ia), the compound etc. shown in (Ib) can be enumerated.
[changing 2]
Reactive F compound can use commercially available product.As commercially available reactive F compound, can enumerate such as, be " Viscoat 3F " that Osaka Organic Chemical Industry (strain) is made, " Viscoat 3FM ", " Viscoat 4F ", " Viscoat 8F ", " Viscoat 8FM ", " Light Ester M-3F " that common prosperity society chemistry (strain) makes etc.
On the other hand, as forming other monomers of side chain crystalline polymer, (methyl) acrylate that the straight-chain alkyl such as with carbonatoms more than 16 can be enumerated, (methyl) acrylate, the polar monomer etc. of alkyl with carbonatoms 1 ~ 6.
As (methyl) acrylate of straight-chain alkyl with carbonatoms more than 16, can enumerate such as, (methyl) vinylformic acid cetyl, (methyl) stearyl acrylate ester, (methyl) vinylformic acid eicosyl ester, (methyl) behenyl base ester etc. have (methyl) acrylate of the wire alkyl of carbonatoms 16 ~ 22.As (methyl) acrylate of alkyl with carbonatoms 1 ~ 6, (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) butyl acrylate, (methyl) Ethyl acrylate etc. can be enumerated such as.As polar monomer, the ethylenically unsaturated monomer containing carboxyl such as such as vinylformic acid, methacrylic acid, β-crotonic acid, methylene-succinic acid, toxilic acid, fumaric acid etc. can be enumerated; (methyl) vinylformic acid 2-hydroxy methacrylate, (methyl) vinylformic acid 2-hydroxy propyl ester, the own ester of (methyl) vinylformic acid 2-hydroxyl etc. have the ethylenically unsaturated monomer etc. of hydroxyl.They can use a kind or be mixed with two or more.In addition, (methyl) acrylate refers to acrylate or methyl acrylate.
About side chain crystalline polymer, in above-mentioned each monomer, preferably there are to major general (methyl) acrylate other monomers as formation side chain crystalline polymer of carbonatoms more than 16, preferably the straight-chain alkyl of carbonatoms more than 18.In addition, obtain in adhesivity and separability well in balance, side chain crystalline polymer preferably will have (methyl) acrylate of the straight-chain alkyl of carbonatoms more than 16, (methyl) acrylate with the alkyl of carbonatoms 1 ~ 6 and polar monomer as other monomers forming side chain crystalline polymer.Especially, side chain crystalline polymer is preferably using stearyl acrylate ester, methyl acrylate and vinylformic acid other monomers as formation side chain crystalline polymer.Now, the polymerization ratio of methyl acrylate is preferably greater than the polymerization ratio of stearyl acrylate ester and acrylic acid polymerization ratio.
About the composition of side chain crystalline polymer, reactive F compound is preferably made to carry out being polymerized with the ratio of 1:99 ~ 20:80, preferably 1:99 ~ 10:90 with mass ratio range with other monomers forming side chain crystalline polymer and the multipolymer that obtains.
In addition, about the composition of side chain crystalline polymer, preferably make reactive F compound 1 ~ 20 weight part, preferably 1 ~ 10 weight part, there is (methyl) acrylate 10 ~ 99 weight part of the straight-chain alkyl of carbonatoms more than 16, preferably 20 ~ 99 weight parts, there is (methyl) acrylate 0 ~ 70 weight part of the alkyl of carbonatoms 1 ~ 6, carry out being polymerized with the ratio of polar monomer 0 ~ 10 weight part and the multipolymer obtained, more preferably reactive F compound 1 ~ 10 weight part is made, there is (methyl) acrylate 25 ~ 30 weight part of the straight-chain alkyl of carbonatoms more than 16, there is (methyl) acrylate 60 ~ 65 weight part of the alkyl of carbonatoms 1 ~ 6, carry out being polymerized with the ratio of polar monomer 1 ~ 10 weight part and the multipolymer obtained.
The weight-average molecular weight of side chain crystalline polymer is preferably 100, and more than 000, more preferably 300,000 ~ 900,000, further preferably 400,000 ~ 600,000.If weight-average molecular weight is too small, then when peeling off temperature sensibility tackiness agent from adherend, likely temperature sensibility adhesive residue on adherend, so-called generation of adhesive deposit increases.In addition, if weight-average molecular weight is excessive, even if then allow side chain crystalline polymer reach temperature lower than fusing point, be also difficult to carry out crystallization, therefore bounding force becomes and is difficult to reduce.Weight-average molecular weight is for measure side chain crystalline polymer with gel permeation chromatography (GPC), and the value of obtained measured value being carried out polystyrene conversion and obtaining.
(tackifier)
The temperature sensibility tackiness agent of present embodiment also contains tackifier except above-mentioned side chain crystalline polymer.The softening temperature of the tackifier of present embodiment is more than 140 DEG C, preferably more than 150 DEG C.The higher limit of softening temperature is not particularly limited, but the too high tackifier of softening temperature are not easily prepared, and are therefore generally less than 170 DEG C, preferably less than 165 DEG C.Softening temperature is the value measured according to the ring and ball method of regulation in JIS K 5902.
In present embodiment, relative to side chain crystalline polymer 100 weight part, contain above-mentioned tackifier with 40 ~ 100 weight parts, the preferably ratio of 50 ~ 100 weight parts.During with the tackifier of such high softening-point at high proportion containing softening temperature more than 140 DEG C, can to be kept for required for fixing adherend fusible while the ratio of side chain crystalline polymer in moderate reduction temperature sensibility tackiness agent, therefore, bounding force fully reduces at lower than the temperature of fusing point, as a result, separability improves.That is, according to the present embodiment, separability can be improved when not changing the composition of side chain crystalline polymer simply by containing the tackifier of high softening-point with specified proportion.Therefore, if such as make the fusing point of side chain crystalline polymer be more than 24 DEG C, then at room temperature reliably can peel off when not being cooled to temperature (such as 5 DEG C) lower than room temperature (23 DEG C).In addition, the separability of the temperature sensibility tackiness agent of present embodiment is excellent, even if therefore the adherend after adhesion is exposed to the temperature of 100 ~ 220 DEG C, as long as be cooled to the temperature lower than fusing point, then also successfully can remove adherend.
About the composition of tackifier, as long as softening temperature is more than 140 DEG C, be not particularly limited, such as can enumerate: rosin series resin, terpene system resin, hydrocarbon system resin, epoxy system resin, polyamide series resin, phenolic aldehyde system resin, keto-aldehyde system resin etc., they can use a kind or be mixed with two or more.In these tackifier illustrative, with the excellent compatibility of above-mentioned side chain crystalline polymer in, preferred rosin series resin.
As rosin series resin, such as rosin derivative etc. can be enumerated.As rosin derivative, can enumerate such as: utilize alcohols by the ester cpds of the rosin of unmodified rosin (pine gum) esterifications such as gum resin, wood rosin, starex; Utilize alcohols by rosin ester classes such as the ester cpds of the modified rosin of the modified rosin esterifications such as staybelite, nilox resin, polymerized rosin; The metal-salt of the rosin based such as unmodified rosin, modified rosin, various rosin derivatives; By acid catalyst addition phenol the rosin phenolic resin etc. carrying out thermopolymerization and obtain on unmodified rosin, modified rosin, various rosin derivatives etc.
In these rosin derivatives illustrative, particularly preferably polymerized rosin ester.Polymerized rosin ester can use commercially available product.As concrete example, " ペ Application セ Le D-160 " that such as waste river chemical industry (strain) makes etc. can be enumerated.
(linking agent)
Temperature sensibility tackiness agent is preferably containing linking agent.As linking agent, can enumerate such as: metal chelating compounds, aziridine cpd etc., particularly preferably metal chelating compounds.According to metal chelating compounds as linking agent, then the tendency that the thermotolerance with temperature sensibility tackiness agent improves.
As metal chelating compounds, can enumerate such as: the methyl ethyl diketone coordination compound, acetylacetic ester coordination compound etc. of polyvalent metal.As polyvalent metal, such as aluminium, nickel, chromium, iron, titanium, zinc, cobalt, manganese, zirconium etc. can be enumerated.They can use a kind or be mixed with two or more.In these metal chelating compounds illustrative, the methyl ethyl diketone coordination compound of preferred aluminium or acetylacetic ester coordination compound, praseodynium aluminium is suitable.
Relative to side chain crystalline polymer 100 weight part, the content of linking agent is preferably 0.1 ~ 12 weight part.When adopting metal chelating compounds as linking agent, relative to side chain crystalline polymer 100 weight part, its content is preferably 0.1 ~ 12 weight part, is more preferably 5 ~ 12 weight parts, more preferably 8 ~ 12 weight parts.
(additive)
Temperature sensibility tackiness agent can containing various additives such as such as softening agent, antiaging agent, UV light absorber.
The manufacture method > of < temperature sensibility tackiness agent
As the manufacture method of temperature sensibility tackiness agent, be not particularly limited, such as following method etc. can be enumerated: the monomer polymerization of side chain crystalline polymer and the side chain crystalline polymer, the solvent and obtain copolymer solution that obtain will be formed, in this copolymer solution, add tackifier obtain coating fluid, make this coating fluid dry.
As the polymerization process of side chain crystalline polymer, be not particularly limited, can adopt such as: solution polymerization process, mass polymerization, suspension polymerization, emulsion polymerization etc.Such as when adopting solution polymerization process, will above-mentioned monomer and the solvent of side chain crystalline polymer be formed, under the condition of about 40 ~ 90 DEG C, stir 2 ~ 10 hours.As solvent, known solvent can be used.When making to contain linking agent, additive in temperature sensibility tackiness agent, in copolymer solution, add linking agent, additive.
< temperature sensibility adhesive sheet >
The temperature sensibility adhesive sheet of present embodiment comprises above-mentioned temperature sensibility tackiness agent, and in the form without the sheet of base material.The thickness of temperature sensibility adhesive sheet is not particularly limited, and is preferably 15 ~ 400 μm.Preferably in the stacked mold release film in the surface of temperature sensibility adhesive sheet.As mold release film, can enumerate such as at the film etc. of the releasing agent such as surface coated silicone of the film formed by polyethylene terephthalate etc.
< temperature sensibility self adhesive tape >
The temperature sensibility self adhesive tape of present embodiment is by forming at the stacked binder layer comprising above-mentioned temperature sensibility tackiness agent of the one or both sides of film-like substrate.That is, the formation of temperature sensibility self adhesive tape is: comprise membranaceous base material and be laminated in 2 layers of formation of binder layer of one side of this base material; Or comprise membranaceous base material and be laminated in 3 layers of formation of binder layer on two sides of this base material respectively.So-called be membranaceously not limited to membranaceous, in the scope of effect not damaging present embodiment, also comprise concept that is membranaceous or sheet.
As the constituent material of base material, can enumerate such as: the synthetic resins such as polyethylene, polyethylene terephthalate, polypropylene, polyester, polymeric amide, polyimide, polycarbonate, vinyl-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-polypropylene multipolymer, polyvinyl chloride.
Base material can be any one in individual layers or polylayer forest, and its thickness is generally about 5 ~ 500 μm.From the view point of improving the adaptation with binder layer, can to base material embodiment as surface treatments such as Corona discharge Treatment, Cement Composite Treated by Plasma, sandblasting, chemical milling process, prime treatment.
In order to the one or both sides at base material arrange binder layer, such as, coating machine etc. is utilized to be coated with above-mentioned coating fluid at the one or both sides of base material and to carry out drying.As coating machine, such as knife coater, roller coating machine, calender courter, comma coater, gravure coater, rod coater etc. can be enumerated.
The thickness of binder layer is not particularly limited, and is preferably 5 ~ 60 μm, more preferably 10 ~ 60 μm, preferably 10 ~ 50 μm further.
When temperature sensibility self adhesive tape is 3 layers of formation, the binder layer of one side can be identical in thickness, composition with the binder layer of another side, also can be different.
The binder layer of another side such as also can be made up of the binder layer comprising pressure sensitive tackiness agent.Pressure sensitive tackiness agent, for having fusible polymkeric substance, can be enumerated such as: natural rubber adhesive, synthetic rubber tackiness agent, phenylethylene/butadiene latex-based tackiness agent, acrylic pressure-sensitive adhesive etc.
Preferably in the stacked mold release film in the surface of temperature sensibility self adhesive tape.As mold release film, can enumerate such as: at the film etc. of the releasing agent such as surface coated silicone of the film formed by polyethylene terephthalate etc.
The temperature sensibility tackiness agent of above-mentioned present embodiment can preferably use as the tackiness agent in the field requiring easy separability.Particularly, the temperature sensibility tackiness agent of present embodiment is suitable in LED, FPD etc. by maximizing and substrate that the glass, plastics etc. of slimming is formed temporary fixed, particularly, the temporary fixed purposes being suitable as the plastic base in the manufacturing process of FPD uses.In this, be also same for the temperature sensibility adhesive sheet of above-mentioned present embodiment and temperature sensibility self adhesive tape.
Below, enumerate synthesis example and embodiment explains the present invention, but the present invention is not limited to following synthesis example and embodiment.In addition, in the following description, " part " represents weight part.
(synthesis example)
With the ratio of stearyl acrylate ester 28 parts, methyl acrylate 62 parts, 5 parts, vinylformic acid and reactive F compound (" Viscoat 3F " that Osaka Organic Chemical Industry (strain) shown in above-mentioned formula (Ia) is made) 5 parts, they are joined ethyl acetate respectively: mix in the mixed solvent 200 parts of toluene=8:2 (weight ratio), stir 4 hours at 55 DEG C, make these monomer polymerizations.The multipolymer obtained and the weight-average molecular weight of side chain crystalline polymer are 525,000, and fusing point is 26 DEG C.In addition, weight-average molecular weight measures multipolymer and the value of obtained measured value being carried out polystyrene conversion and obtaining for using GPC.Fusing point is the value using DSC to carry out measuring under the condition determination of 10 DEG C/min and obtain.
[embodiment 1 ~ 4 and comparative example 1 ~ 3]
The making > of < temperature sensibility adhesive sheet
First, use the multipolymer obtained in ethyl acetate adjustment synthesis example, make solids component reach 30 % by weight, obtain copolymer solution.Then, relative to this copolymer solution 100 parts, the tackifier (the polymerized rosin ester " ペ Application セ Le D-160 " of the softening temperature more than 150 DEG C that waste river chemical industry (strain) is made) converted with solids component are added with the ratio shown in table 1, then add praseodynium aluminium (Chuan Yan fine chemistry Inc.) with the ratio of 10 parts, obtain coating fluid.
Mold release film is coated with this coating fluid, and at 100 DEG C, heating carries out crosslinking reaction in 10 minutes, obtains the temperature sensibility adhesive sheet of the thickness 25 μm formed by temperature sensibility tackiness agent.It should be noted that, mold release film is used in the surface coated silicone of polyethylene terephthalate film and the film of thickness 50 μ obtained.
< evaluates >
180 ° of stripping strengths are evaluated to obtained temperature sensibility adhesive sheet.As shown below, and its result is as shown in table 1 for evaluation method.
(180 ° of stripping strengths)
To obtained temperature sensibility adhesive sheet, measure 180 ° of stripping strengths in 50 DEG C and 23 DEG C of each atmosphere temperatures based on JIS Z0237.Particularly, first, under the following conditions, by taking off the temperature sensibility adhesive sheet after mold release film, wide 25mm, the polyimide film (" 100H " of Dong Li E.I.Du Pont Company) of thick 25 μm are adhered on the base station of glass.Then, load cell is used to implement 180 ° of strippings with the speed of 300mm/ minute to the polyimide film after adhesion.
(50℃)
In the atmosphere temperature of 50 DEG C, by temperature sensibility adhesive sheet, polyimide film is adhered to base station, leave standstill after 20 minutes, implement 180 ° of strippings, measure stripping strength.Based on following benchmark, evaluate adhesivity by the measured value of stripping strength.
Zero: more than 0.05N/25mm
×: be less than 0.05N/25mm
(23℃)
In the atmosphere temperature of 50 DEG C, by temperature sensibility adhesive sheet, polyimide film is adhered to base station, atmosphere temperature is made to rise to 200 DEG C, leave standstill after 20 minutes in this atmosphere temperature, atmosphere temperature is made to drop to 23 DEG C, leave standstill after 20 minutes in this atmosphere temperature, implement 180 ° of strippings, measure stripping strength.Based on following benchmark, evaluate adhesivity by the measured value of stripping strength.
Zero: below 0.4N/25mm
×: higher than 0.4N/25mm
[table 1]
※ changes 23 DEG C after temperature with the order of 50 DEG C and 200 DEG C.
As known from Table 1, in comparative example 1,2, relative to side chain crystalline polymer 100 weight part, the content of tackifier is less than 40 weight parts, the ratio of side chain crystalline polymer is too high, although therefore there is adhesivity 50 DEG C (temperature more than fusing point), not there is separability 23 DEG C (room temperatures).
In embodiment 1 ~ 4, relative to side chain crystalline polymer 100 weight part, the content of tackifier is 40 ~ 100 weight parts, therefore has adhesivity 50 DEG C (temperature more than fusing point), and has separability 23 DEG C (room temperatures).
On the other hand, in comparative example 3, relative to side chain crystalline polymer 100 weight part, the content of tackifier, more than 100 weight parts, infers that the ratio of side chain crystalline polymer is too low, even if therefore also do not adhere to 50 DEG C (temperature more than fusing point).
In addition, in comparative example 1, demonstrate lower than the stripping strength at 23 DEG C of fusing point (26 DEG C) value be greater than higher than the stripping strength at 50 DEG C of fusing point.Infer that this is mainly subject to the impact of anchoring effect.That is, during stripping strength at mensuration 23 DEG C, first temperature sensibility adhesive sheet is exposed to high temperature (200 DEG C), therefore in process of cooling, show anchoring effect, bounding force increases.In comparative example 1, the content of tackifier is few, and therefore the ratio of side chain crystalline polymer is many, is therefore significantly subject to the impact of anchoring effect, obtains the above results.
Claims (16)
1. a temperature sensibility tackiness agent, containing tackifier and side chain crystalline polymer, the bounding force of described temperature sensibility tackiness agent reduces under the temperature condition of the fusing point lower than described side chain crystalline polymer,
The softening temperature of described tackifier is more than 140 DEG C, and relative to side chain crystalline polymer 100 weight part, the content of described tackifier is 40 ~ 100 weight parts.
2. temperature sensibility tackiness agent as claimed in claim 1, wherein,
Described fusing point is more than 24 DEG C.
3. temperature sensibility tackiness agent as claimed in claim 1, wherein,
Described tackifier are polymerized rosin ester.
4. temperature sensibility tackiness agent as claimed in claim 1, wherein,
Described side chain crystalline polymer comprises the multipolymer of other monomers of reactive F compound and formation side chain crystalline polymer.
5. temperature sensibility tackiness agent as claimed in claim 4, wherein,
Described reactive F compound is the compound shown in following general formula (I),
R
1-CF
3(I)
In formula, R
1represent group CH
2=CHCOOR
2-or CH
2=C (CH
3) COOR
2-, in formula, R
2represent alkylidene group.
6. temperature sensibility tackiness agent as claimed in claim 4, wherein,
Other monomers of described formation side chain crystalline polymer are at least (methyl) acrylate of the straight-chain alkyl with carbonatoms more than 16.
7. temperature sensibility tackiness agent as claimed in claim 4, wherein,
Other monomers of described formation side chain crystalline polymer are (methyl) acrylate of the straight-chain alkyl with carbonatoms more than 16, (methyl) acrylate with the alkyl of carbonatoms 1 ~ 6 and polar monomer.
8. temperature sensibility tackiness agent as claimed in claim 4, wherein,
Other monomers of described formation side chain crystalline polymer are stearyl acrylate ester, methyl acrylate and vinylformic acid.
9. temperature sensibility tackiness agent as claimed in claim 8, wherein,
The polymerization ratio of described methyl acrylate is greater than the polymerization ratio of described stearyl acrylate ester and described acrylic acid polymerization ratio.
10. temperature sensibility tackiness agent as claimed in claim 1, wherein,
The weight-average molecular weight of described side chain crystalline polymer is 400000 ~ 600000.
11. temperature sensibility tackiness agents as claimed in claim 1, wherein,
Also containing metal chelating compounds.
12. temperature sensibility tackiness agents as claimed in claim 11, wherein,
Relative to side chain crystalline polymer 100 weight part, the content of described metal chelating compounds is 8 ~ 12 weight parts.
13. temperature sensibility tackiness agents as claimed in claim 1, after the adherend after adhesion is exposed to the temperature of 100 ~ 220 DEG C, remove this adherend at the temperature lower than described fusing point.
14. temperature sensibility tackiness agents as claimed in claim 1, it is temporary fixed for plastic base in the manufacturing process of flat-panel monitor.
15. 1 kinds of temperature sensibility adhesive sheets, it comprises temperature sensibility tackiness agent according to claim 1.
16. 1 kinds of temperature sensibility self adhesive tapes, it is by forming at the stacked binder layer comprising temperature sensibility tackiness agent according to claim 1 of the one or both sides of film-like substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014065474A JP6289960B2 (en) | 2014-03-27 | 2014-03-27 | Temperature sensitive adhesive |
| JP2014-065474 | 2014-03-27 |
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| Publication Number | Publication Date |
|---|---|
| CN104946171A true CN104946171A (en) | 2015-09-30 |
| CN104946171B CN104946171B (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510138016.3A Active CN104946171B (en) | 2014-03-27 | 2015-03-26 | Response to temperature adhesive |
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| Country | Link |
|---|---|
| JP (1) | JP6289960B2 (en) |
| KR (1) | KR102344755B1 (en) |
| CN (1) | CN104946171B (en) |
| TW (1) | TWI646169B (en) |
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| JP2012158633A (en) * | 2011-01-31 | 2012-08-23 | Nitta Corp | Easily-releasable pressure-sensitive adhesive sheet, and easily-releasable pressure-sensitive adhesive tape |
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| CN102317399A (en) * | 2009-02-16 | 2012-01-11 | 新田股份有限公司 | Heat-sensitive adhesive and heat-sensitive adhesive tape |
| JP2012102212A (en) * | 2010-11-09 | 2012-05-31 | Nitta Corp | Easily peelable pressure-sensitive adhesive sheet and easily peelable pressure-sensitive adhesive tape |
| JP2012158633A (en) * | 2011-01-31 | 2012-08-23 | Nitta Corp | Easily-releasable pressure-sensitive adhesive sheet, and easily-releasable pressure-sensitive adhesive tape |
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| CN108727996A (en) * | 2017-04-21 | 2018-11-02 | 霓达株式会社 | Response to temperature adhesive |
| CN108727996B (en) * | 2017-04-21 | 2021-08-06 | 霓达株式会社 | Temperature-sensitive adhesive |
| CN108559425A (en) * | 2018-05-11 | 2018-09-21 | 华南协同创新研究院 | A kind of solventless adhesive of anti-FDM print devices warpage, print platform and preparation method thereof |
| CN108559425B (en) * | 2018-05-11 | 2020-01-17 | 华南协同创新研究院 | Solvent-free adhesive for preventing warping of FDM printing device, printing platform and manufacturing method of solvent-free adhesive |
| CN112204435A (en) * | 2018-11-12 | 2021-01-08 | 株式会社Lg化学 | Color conversion film, and backlight unit and display device including the same |
| CN113993961A (en) * | 2019-06-12 | 2022-01-28 | 霓达株式会社 | Temperature-sensitive adhesive |
| WO2021057847A1 (en) * | 2019-09-24 | 2021-04-01 | 南京清尚新材料科技有限公司 | Cold-closing type adhesive and preparation method therefor, and method for preparing adhesive tape |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015187238A (en) | 2015-10-29 |
| CN104946171B (en) | 2018-12-14 |
| JP6289960B2 (en) | 2018-03-07 |
| KR20150112871A (en) | 2015-10-07 |
| TWI646169B (en) | 2019-01-01 |
| KR102344755B1 (en) | 2021-12-29 |
| TW201540810A (en) | 2015-11-01 |
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