CN103649261B - Easily decomposability adhesive composition and easily decomposability adhesive tape - Google Patents

Abstract

The present invention relates to a kind of easily decomposability adhesive composition, it is while containing acrylic block polymer, possibly together with acid catalyst or acid-producing agent, wherein, described acrylic block polymer has poly-(methyl) acrylate chains (A) and poly-(methyl) acrylate chains (B), described poly-(methyl) acrylate chains (A) is formed by (methyl) acrylate monomer (a) containing carboxyl precursor groups, described poly-(methyl) acrylate chains (B) comprises (methyl) acrylate (b) of the alkyl with carbon number 1～14, and the monomer (c) containing polar group is as monomer component, thus, suitable cementability and decomposability can be realized, stick-slip when decomposing can also be suppressed.

Description

Easily decomposability adhesive composition and easily decomposability adhesive tape

Technical field

The present invention relates to carrying out after fixing between the attaching of adherend, article through one This attaching, the fixing easy decomposability adhesive tape easily decomposed can be made after between Ding Qi, and Realize the easy decomposability adhesive composition of this easy decomposability adhesive tape.

Background technology

Adhesive tape be used for as the engagement means of the excellent high bonding reliability of operability OA mechanical, Parts fixed-purpose, the most fixing of parts in each industrial fields such as IT household appliances, automobile are used On the way, in the label applications of expression product information etc..In recent years, from the viewpoint of earth environment is protected, In the various industrial fields such as above-mentioned household electrical appliances, automobile, the recirculation of the product after using, recycling Require improving.When various products carry out recirculation, recycling, need to carry out consolidating parts The operation that the adhesive tape that fixed or label is used is peeled off, but owing to this adhesive tape is arranged in product Everywhere, it is desirable to realized the reduction of running cost by simple removal step.

As the adhesive tape of easy decomposability, such as, have bonding force different more than 2 layer are had been disclosed The adhesive member (with reference to patent documentation 1) of adhesive layer.This adhesive tape is following adhesive member, That is, described adhesive member is made by the weak adhesive layer having in the adhesive member of the adhesive layer of overlay structure Adherend is carried out joining process, thus realizes the firm set of adherend and by this weak adhesive layer The adhesive member readily decomposed as release surface.But, this adhesive member is with laminated oxidant layer As required composition, therefore there is the problem that manufacturing cost uprises.Additionally, due to be made by weak viscous Close layer and carry out the composition bonding with adherend, therefore, exist at the aspect improving bonding force and limit, It is difficult to use in the purposes firmly fixing article.

As the adhesive composition of other easy decomposability, disclose a kind of containing aliphatic polyester Adhesive composition (with reference to patent documentation 2).Disclose this adhesive composition at warm water immersion Under strip operation in can be easily peeled off in this by the hydrolysis facilitation of polycaprolactone Hold.But, this adhesive composition needs warm water immersion when peeling off, and is therefore carrying out operation splitting Component relatively big in the case of equipment cost higher, and cannot be applicable to electronic unit etc. in addition again The parts of water cannot be used when utilizing etc..

Even if additionally, decompose time adhesive tape bonding force be greatly reduced in the case of, if will Adhesive tape peels off from adherend, stick-slip occurs when being peeled off from base material by adhesive phase (stick-slipping), then, when various industrial products being carried out recirculation, recycling, there is generation There is cull situation on parts in the damaged situation of parts, part, additionally, at substantial amounts of article Decomposition time, workability is poor sometimes.

Additionally, as the adhesive composition of the block copolymer employing acrylic acid series, disclose A kind of adhesive composition containing block copolymer, described block copolymer is by producing third Olefin(e) acid based polymer block has the acrylic copolymer of carboxyl precursor groups (-COO t-Butyl) After thing, this carboxyl precursor groups is converted to carboxyl and obtains (with reference to patent documentation 3).Should bond For agent compositions, there is manufacture and at side chain, there is the tert-butyl group acrylic acid series as carboxyl precursor groups The operation of copolymer, but this tert-butyl group of remaining in the adhesive composition of gained, therefore do not have point Xie Xing.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 10-140093 publication

Patent documentation 2: Japanese Unexamined Patent Publication 9-137145 publication

Patent documentation 3: Japanese Unexamined Patent Publication 2002-167566 publication

Summary of the invention

Invent problem to be solved

Problem to be solved by this invention is, it is provided that easily decomposability adhesive tape and to be capable of this easy The adhesive composition of decomposability adhesive tape, described easy decomposability adhesive tape may be adapted to the patch to adherend Echo fixing between parts, and, even if not using the water such as warm water when decomposing, it is also possible to by adding Heat, energy-ray irradiate and easily decompose.

Additionally, problem to be solved by this invention is, the adhesive tape when by decomposition is from adherend Upper stripping or when being peeled off from base material by adhesive phase, is not easy to occur the easy decomposability adhesive tape of stick-slip And it is capable of the adhesive composition of this easy decomposability adhesive tape.

For the method solving problem

The present invention contains following mode.

(1) a kind of easily decomposability adhesive composition, it is characterised in that be to gather containing acrylic acid series While compound, possibly together with acid catalyst or the adhesive composition of acid-producing agent, wherein, described third Olefin(e) acid based polymer is for having poly-(methyl) acrylate chains (A) and poly-(methyl) acrylate The acrylic block polymer of chain (B), wherein, described poly-(methyl) acrylate chains (A) Formed by (methyl) acrylate monomer (a) containing carboxyl precursor groups, described poly-(methyl) Acrylate chains (B) comprises described (methyl) acrylate monomer (a) containing carboxyl precursor groups (methyl) acrylate (b) of the alkyl with carbon number 1～14 in addition and containing polar group Monomer (c) as monomer component.

(2) according to the easy decomposability adhesive composition described in above-mentioned (1), wherein, described contain There is (methyl) acrylate monomer (a) of carboxyl precursor groups for selected from (methyl) acrylic acid uncle Butyl ester, 2-methyl-2-adamantyl (methyl) acrylate, 2-ethyl-2-adamantyl (methyl) Acrylate, (methyl) acrylic acid norbornene ester, (methyl) isobornyl acrylate, (methyl) third At least one in olefin(e) acid cyclohexyl and (methyl) benzyl acrylate.

(3) according to the easy decomposability adhesive composition described in above-mentioned (1) or (2), wherein, (methyl) acrylate (b) of the described alkyl with carbon number 1～14 is for selected from (methyl) third At least one in olefin(e) acid 2-Octyl Nitrite and (methyl) n-butyl acrylate.

(4) according to the easy decomposability adhesive composition according to any one of above-mentioned (1)～(3), Wherein, poly-(methyl) acrylate chains (A) and poly-(methyl) in described acrylic acid series polymeric compounds The ratio of acrylate chains (B) is 75/25～1/99 with the molar ratio computing represented by (A)/(B).

(5) according to the easy decomposability adhesive composition according to any one of above-mentioned (1)～(4), Wherein, the content of the described monomer (c) containing polar group gathers for forming described acrylic block 1～30 mass % in whole monomer components of compound.

(6) a kind of easily decomposability adhesive tape, it has and comprises any one of above-mentioned (1)～(5) The adhesive phase of described easy decomposability adhesive composition.

The effect of invention

According to the easy decomposability adhesive composition of the present invention, acrylic acid series polymeric compounds can not be reduced The adhesion characteristic being had, and the easy means such as heat, light are utilized when decomposing, the most not cull Ground decomposes.Additionally, good decomposability can also be realized in the case of bonding force height in the early stage, By using the monomer and containing with block-wise containing polar group to have the construction unit of decomposability, So that binding agent/substrate interface, binding agent/adherend interface decomposability improve, decompose time When adhesive tape is peeled off from adherend or is peeled off from base material by adhesive phase, it is also possible to divide well Solve.Therefore, it is possible to be applicable to following purposes with being not particularly limited, and also can utilize when decomposing Easy firing equipment, energy-ray irradiation apparatus etc. easily decompose, and described purposes includes: Be suitable to the portion of each industrial fields such as the OA machinery of recirculation or recycling, IT family's electrical article, automobile Part fixed-purpose, the temporary transient fixed-purpose of parts, the label applications etc. of expression product information.

Furthermore it is possible to be not susceptible to stick-slip when decomposing, it is not susceptible to the parts as adherend Damaged, cull, workability during decomposition also becomes good.Therefore, utilizing adhesive tape to organic Slim image display that EL panel or liquid crystal panel are used, there is the saturating of transparency conducting layer Bright electro-conductive glass, the component protecting the slim glass etc. such as glass to be susceptible to crackle of panel surface are carried out In the case of Gu Ding, if there is stick-slip when peeling off, then peeling force temporarily increases, thus parts hold It is easily generated crackle, but utilizes the adhesive tape of the present invention, in this parts being prone to and cracking, also Can not decompose with cracking.

Accompanying drawing explanation

Fig. 1 be represent the heating in embodiment 1 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 2 be represent the heating in embodiment 2 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 3 be represent the heating in embodiment 3 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 4 be represent the heating in embodiment 4 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 5 be represent the heating in comparative example 1 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 6 be represent the heating in comparative example 2 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 7 be represent the heating in comparative example 3 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 8 be represent the heating in embodiment 5 before and after, UV irradiate after and UV irradiate and add 180 ° of peel strengths (N/20mm) after heat and the figure of peel distance (mm/20mm width).

Fig. 9 is 180 ° of strippings after representing the initial stage in embodiment 6 and UV irradiation and heating Intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 10 is 180 ° of strippings after representing the initial stage in embodiment 7 and UV irradiation and heating Intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 11 is 180 ° of strippings after representing the initial stage in embodiment 8 and UV irradiation and heating Intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 12 is 180 ° of strippings after representing the initial stage in embodiment 9 and UV irradiation and heating Intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 13 is 180 ° of strippings after representing the initial stage in embodiment 10 and UV irradiation and heating From intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 14 is 180 ° of strippings after representing the initial stage in embodiment 11 and UV irradiation and heating From intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 15 is 180 ° of strippings after representing the initial stage in embodiment 14 and UV irradiation and heating From intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 16 is 180 ° of strippings after representing the initial stage in comparative example 4 and UV irradiation and heating Intensity (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 17 be represent the initial stage in embodiment 15 and heating, UV irradiate and reheat after 180 ° of peel strengths (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 18 be represent the initial stage in embodiment 16 and heating, UV irradiate and reheat after 180 ° of peel strengths (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 19 be represent the initial stage in comparative example 5 and heating, UV irradiate and reheat after 180 ° of peel strengths (N/20mm) and the figure of peel distance (mm/20mm width).

Figure 20 be represent the initial stage in comparative example 6 and heating, UV irradiate and reheat after 180 ° of peel strengths (N/20mm) and the figure of peel distance (mm/20mm width).

Detailed description of the invention

[acrylic acid series polymeric compounds]

The acrylic acid series polymeric compounds that the easy decomposability adhesive composition of the present invention is used is poly-for having The acrylic acid series of (methyl) acrylate chains (A) and poly-(methyl) acrylate chains (B) is embedding Section polymer, described poly-(methyl) acrylate chains (A) is by (the first containing carboxyl precursor groups Base) acrylate monomer (a) formation, described poly-(methyl) acrylate chains (B) comprises tool There are (methyl) acrylate (b) of the alkyl of carbon number 1～14 and the monomer (c) containing polar group As monomer component.

Poly-(methyl) formed by (methyl) acrylate monomer (a) containing carboxyl precursor groups Acrylate chains (A) has this (methyl) acrylate monomer (a) at side chain and is had Poly-(methyl) acrylate chains of carboxyl precursor groups.Poly-(methyl) acrylate chains (A's) Carboxyl precursor groups is produced by acid catalyst or by means of from the light outside adhesive phase, heat Give birth to the sour composition of the acid-producing agent of acid and be converted into carboxyl, this poly-(methyl) acrylate chains (A) Become poly-(methyl) acrylic acid chain.This poly-(methyl) acrylic acid chain makes the cohesiveness of adhesive phase carry Height, foams during this external generation (methyl) acrylic acid, therefore makes the cohesive of adhesive phase drop Low, therefore, sour composition that side chain produces by means of outside stimulus and decompose, thus, viscous The fissility of mixture layer improves, it is possible to decompose well.

As carboxyl precursor groups, it is not particularly limited to become the carboxyl precursor base of carboxyl by acid Group, but preferably use and be prone to by acid to occur that alkene departs from by having secondary carbon or tertiary carbon is former The ester group that the alkyl of son and carboxyl are constituted.Additionally, as the alkane with secondary carbon or tertiary carbon atom Group beyond base, will also be preferred the benzyl etc. occurring to depart from the most under mild conditions.Should Occur when side chain decomposes, in the carboxyl precursor groups departed from, to occur to depart from and produce the gas such as alkene, alkane Carboxyl precursor groups is favorably improved the fissility of adhesive phase, therefore available better shelling again From property, thus preferably.

This poly-(methyl) acrylate chains (A) is preferably with the polymer represented by following formula (1) Chain.

R in above formula (1)₁Represent hydrogen atom or methyl, preferably hydrogen atom.Additionally, X₁Profit Depart from the impact of acid, represent in above-mentioned formula (1) and the alkyl of carboxyl can be formed (preferably Carbon number 1～20, more preferably carbon number 1～12).At X₁For having secondary carbon or tertiary carbon atom In the case of alkyl, the secondary carbon of this alkyl or tertiary carbon atom and the oxygen of (methyl) acryloxy Atomic linkage.This X₁As long as the alkyl of carboxyl can be formed in above-mentioned formula (1) by departing from, Just can be different in each repetitive, but connect at the repetitive that manufacture view is the most identical and The structure obtained.As long as number of repeat unit n is more than 10, it is possible to by acid catalyst or by Side chain is carried out by producing the sour composition of the acid-producing agent of acid from the light outside adhesive phase, heat Decompose, thus help in the stripping of adhesive phase.This number of repeat unit n is the repetition list that can be polymerized Unit's number, as long as and be capable of adhesion characteristic, then be not particularly limited, but preferably more than 10, More preferably more than 20, the upper limit is preferably less than 100,000.Wherein, left if 100～10000 The right side, then can be easily obtained particularly suitable adhesion properties, the most preferably, particularly preferably 200～6000.

At (methyl) acrylate monomer (a) constituting poly-(methyl) acrylate chains (A) In, it is bonded with (methyl) acryloxy forms as having the secondary carbon of alkyl of secondary carbon (methyl) acrylate monomer (al-1), such as can use (methyl) sec-butyl acrylate, (methyl) isopropyl acrylate, the secondary own ester of (methyl) acrylic acid, the secondary monooctyl ester of (methyl) acrylic acid, (methyl) acrylic acid secondary nonyl ester, (methyl) acrylic acid ester in the secondary last of the ten Heavenly stems, (methyl) acrylic acid norbornene ester, (methyl) isobornyl acrylate, (methyl) cyclohexyl acrylate etc..Wherein, acrylate Ester can be easily obtained suitable decomposability and can be easily obtained the adhesive phase that colorless and transparent degree is high, because of This can be preferably used.

Additionally, as tertiary carbon atom and (methyl) acryloxy of the alkyl with tertiary carbon atom (methyl) acrylate monomer (al-2) of bonding, such as, can use (methyl) propylene Tert-butyl acrylate, the tertiary own ester of (methyl) acrylic acid, the tertiary monooctyl ester of (methyl) acrylic acid, (methyl) propylene Acid tertiary nonyl ester, (methyl) acrylic acid ester in the tertiary last of the ten Heavenly stems, 2-methyl-2-adamantyl (methyl) acrylate Deng 2-alkyl-2-adamantane radical base (methyl) acrylate etc..

Additionally, as (methyl) acrylate containing carboxyl precursor groups beyond above-mentioned substance Monomer (a), further preferably can use (methyl) benzyl acrylate.

In above-mentioned (methyl) acrylate monomer (a), (methyl) tert-butyl acrylate, 2- Methyl-2-adamantyl (methyl) acrylate, 2-ethyl-2-adamantyl (methyl) acrylic acid Ester, (methyl) acrylic acid norbornene ester, (methyl) isobornyl acrylate, (methyl) acrylic acid ring Own ester and (methyl) benzyl acrylate are particularly suitable for forming carboxyl by acid, therefore can be suitable Select and used, wherein, particularly preferably can use tert-butyl acrylate.Additionally, acrylic acid Isobornyl thiocyanoacetate is not only suitable and forms carboxyl by acid, and heat stability is high, it is easy to obtain colourless and The adhesive phase that transparency is high, the most particularly preferably uses.

In the adhesive composition of the present invention, preferably can use only by heating or only by purple Outside line is irradiated and is carried out the adhesive composition decomposed, but in the purposes etc. needing bonding stability, Sometimes the most following adhesive composition it is preferably: only do not send out by heating or only irradiated by ultraviolet Raw bonding force is greatly reduced and occurs bonding force to be greatly reduced when the combination that heating and ultraviolet are irradiated Adhesive composition.In such purposes, as above-mentioned (methyl) containing carboxyl precursor groups Acrylate monomer (a), is preferably used and is only not susceptible to by heating or only irradiated by ultraviolet Bonding force is greatly reduced and occurs bonding force to be greatly reduced when the combination that heating and ultraviolet are irradiated Above-mentioned (methyl) acrylate monomer exemplified, wherein, particularly preferably can use (methyl) Sec-butyl acrylate, (methyl) isopropyl acrylate, cyclohexyl acrylate, isobornyl acrylate, Acrylic acid norbornene ester or tert-butyl acrylate.

As the content of (methyl) acrylate monomer (a) containing carboxyl precursor groups, due to It is prone to real for the situation below 75 mass % in whole monomer components of composition acrylic acid series polymeric compounds The most suitable cementability and decomposability, the most preferably, more preferably 1～60 mass %, the most excellent Elect 2～50 mass %, particularly preferably 3～40 mass % as.

Just constitute poly-(methyl) acrylate chains (B) of acrylic acid series polymeric compounds used in the present invention For, it is capable of suitable cementability by having following poly-(methyl) acrylate chains, Described poly-(methyl) acrylate chains has above-mentioned (methyl) acrylic acid containing carboxyl precursor groups (methyl) acrylate (b) of the alkyl with carbon number 1～14 beyond ester monomer (a) and Monomer (c) containing polar group is as monomer component.

As this, there is (methyl) acrylate (b) of alkyl of carbon number 1～14, the most permissible Use (methyl) acrylic acid methyl ester., (methyl) ethyl acrylate, (methyl) n-butyl acrylate, (methyl) Isobutyl 2-propenoate, (methyl) Hexyl 2-propenoate, (methyl) acrylic acid 2-ethyl hexyl Ester, (methyl) n-octyl, (methyl) Isooctyl acrylate monomer, the positive nonyl of (methyl) acrylic acid Ester, (methyl) acrylic acid different nonyl ester, (methyl) acrylic acid ester in the positive last of the ten Heavenly stems, (methyl) Isodecyl Ester, (methyl) acrylic acid n-undecane base ester, (methyl) dodecylacrylate, (methyl) Acrylic acid n-tridecane base ester and/or (methyl) n-myristyl base ester etc..Wherein, logical Cross use (methyl) n-butyl acrylate and/or (methyl) 2-EHA as mainly Monomer component, thus suitably improve the cohesive of the adhesive phase of gained.

Poly-(methyl) acrylate chains (B) is by (the first by the above-mentioned alkyl with carbon number 1～14 Base) acrylate monomer (b) is as main monomer component, thus it is easily achieved suitable bonding Property, preferably comprise more than 50 mass % in the monomer component of poly-(methyl) acrylate chains (B) For (methyl) acrylate monomer (b) of the above-mentioned alkyl with carbon number 1～14, more preferably it is set to More than 80 mass %.

Additionally, by making (methyl) acrylate monomer (b) for constituting acrylic acid series polymeric compounds All more than 20 mass % in monomer component, thus it is easily achieved suitable cementability, the most excellent Choosing, more preferably 30～95 mass %, more preferably 40～90 mass %, particularly preferably 50～80 mass %.

In the present invention, as constitute poly-(methyl) acrylate chains (B) monomer component and also With the monomer (c) containing polar group, thus there is high adhesiveness, and can realize when decomposing Excellent decomposability.As the monomer containing polar group, can illustrate and there is hydroxyl, carboxyl, ammonia Base, imino group or the vinyl monomer of amide groups isopolarity group, these monomers by intermolecular mutually The raising of the cohesiveness of adhesive phase when acting on and easily help cementability, decompose, the most preferably.Its In, preferably can use the vinyl monomer containing polar group that can form hydrogen bond, just contain hydroxyl For the vinyl monomer of base, cementability improves, bonding after the ageing stability of adhesive phase excellent, And it is prone to guarantee the cohesiveness of adhesive phase when decomposing, hence helps to adherend/adhesive phase Interface, the decomposition of adhesive phase/substrate interface, the suppression of stick-slip, it is easy to obtain suitable decomposability, The most particularly preferred

As the vinyl monomer containing hydroxyl, such as, can suitably select and use (methyl) third Olefin(e) acid 2-hydroxy methacrylate, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) acrylic acid 3-hydroxyl third Ester, (methyl) acrylic acid 2-hydroxybutyl, (methyl) acrylic acid 4-hydroxybutyl, (methyl) third The own ester of olefin(e) acid 2-hydroxyl, (methyl) acrylic acid own ester of 6-hydroxyl, (methyl) acrylic acid 8-hydroxyl are pungent Ester, (methyl) acrylic acid 10-hydroxyl ester in the last of the ten Heavenly stems, (methyl) acrylic acid 12-hydroxylauric ester etc..Its In, preferably can use (methyl) acrylic acid 2-hydroxy methacrylate or (methyl) acrylic acid 4-hydroxyl Butyl ester, particularly preferably can use (methyl) acrylic acid 2-hydroxy methacrylate.

Additionally, as the vinyl monomer containing carboxyl, such as acrylic acid, methyl-prop can be used Olefin(e) acid, itaconic acid, maleic acid .beta.-methylacrylic acid, acrylic acid dimer, ethylene-oxide-modified succinic acid third Olefin(e) acid ester etc. has the monomer etc. of carboxyl.

Additionally, as the vinyl monomer containing amide groups, such as acrylamide, first can be used Base acrylamide, acrylamide, NVP, N, N-dimethyl allene acyl Amine, N, N-dimethylmethacryl amide, N, N-acrylamide, N, N-diethylmethyl Acrylamide, N, N '-methylene-bisacrylamide, N, N-dimethylaminopropylacryl amide, N, N- Dimethylaminopropyl Methacrylamide, diacetone acrylamide etc., as the ethylene containing amino Base monomer, such as, can use amino-ethyl (methyl) acrylate, N, N-dimethylaminoethyl Base (methyl) acrylate, N, N-dimethylaminopropyl (methyl) acrylate etc..

Additionally, as the monomer containing imino group, such as can use N-cyclohexylmaleimide, Isopropylmaleimide, N-N-cyclohexylmaleimide, clothing health acid imide etc..

As the content of the vinyl monomer containing polar group, gather by being set to composition acrylic acid series 1～30 mass % in the monomer component of compound, thus decomposability during strong bonding force becomes special Well, the most preferably, more preferably 5～25 mass %, the most preferably 8～20 mass %. If additionally, making the content of the vinyl monomer containing polar group is more than 5 mass %, more preferably Be more than 8 mass %, then the cohesiveness of the adhesive phase under high temperature uprises, it is easy to given play to excellence High temperature bonding, be prone at adhesive phase/adherend interface during decomposition, adhesive phase/substrate interface good Peeling-off well, the most particularly preferably.

It should be noted that in poly-(methyl) acrylate chains (B), it is also possible to containing above-mentioned There is (methyl) acrylate (b) of the alkyl of carbon number 1～14 and the monomer containing polar group Monomer beyond (c).As this monomer, such as, can list styrene, vinylacetate etc.. Additionally, according to manufacture method, poly-(methyl) acrylate chains (B) can also comprise containing carboxylic (methyl) acrylate monomer (a) of based precursor group.In poly-(methyl) acrylate chains (B) In, at (methyl) acrylate (b) containing the above-mentioned alkyl with carbon number 1～14 and contain In the case of monomer beyond the monomer (c) of polar group, preferably make this monomer for forming poly-(first Base) acrylate chains (B) monomer component in 30 mass % below, particularly preferably 10 matter Amount below %.

Acrylic acid series polymeric compounds used in the present invention is above-mentioned poly-(methyl) acrylate chains (A) Acrylic block copolymer with poly-(methyl) acrylate chains (B).In the present invention, logical Cross cementability, excellent poly-(methyl) acrylate of cohesiveness of adhesive phase having with adherend Chain (B) and there is poly-(methyl) acrylate that the repetitive of decomposability is formed by connecting Chain (A), even if thus there is high bonding force, it is also possible to given play to aptly when decomposing and had point Solve the effect of the repetitive of performance, can realize good decomposability while stick-slip does not occur when decomposing. It should be noted that this block copolymer can be one poly-(methyl) acrylate chains (A) with The block copolymer (AB block copolymer) of one poly-(methyl) acrylate chains (B), also Can be multiple poly-(methyl) acrylate chains (A), multiple poly-(methyl) acrylate chains (B) Randomly carry out block polymerization block copolymer (ABA type, BAB type, ABAB type, ABABA type etc.).

As long as the weight average molecular weight of acrylic acid series polymeric compounds used in the present invention is left 10,000～2,000,000 Suitably adjust according to occupation mode in right scope, utilizing active free radical polymerization described later In the case of legal system makes aforesaid propylene acid based polymer, from the viewpoint of maintaining good production efficiency, It is preferably set to 10,000～about 100,000, from the viewpoint of maintaining the good bonding strength before decomposing, It is preferably set to more than 150,000, is more preferably set to more than 300,000, is particularly preferably set to 450,000～100 About ten thousand.Additionally, especially it is desired to ensure that in the case of the cohesiveness of adhesive phase when decomposing, also It is preferably set to more than 600,000.Number-average molecular weight at the adhesive composition of the present invention is more than 150,000 In the case of, it is easy to accomplish high bonding force and suitable decomposability, the most preferably.

Above-mentioned weight average molecular weight and number-average molecular weight are the standard utilizing gel permeation chromatography (GPC) Polystyrene conversion.Example as condition determination, it is possible to use following condition is measured: make With HLC-8220GPC (Dong Cao company system), chromatographic column uses TSK gel GMHXL [east Cao's system], Chromatogram column temperature is 40 DEG C, and eluent is oxolane, and flow is set to 1.0mL/ minute, and standard is gathered Styrene uses TSK polystyrene standard.

In order to molecular weight is adjusted, it is also possible to use chain-transferring agent in polymerization.Turn as chain Move agent, it is possible to use known chain-transferring agent, such as lauryl mercaptan, glycidyl mercaptan, mercapto Guanidine-acetic acid (mercapto-acetic acid), 2 mercapto ethanol, TGA (thioglycolic acid), 2-ethylhexyl mercaptoacetate, 2,3-dimercapto-1-propanol etc..

With regard to poly-(methyl) acrylate chains (A) in acrylic acid series polymeric compounds and poly-(methyl) third Olefin(e) acid ester chain (B) containing ratio for, (A) total relative to (A) and (B) is preferred It is 75 moles of below %.And, the copolymerization ratio represented by mol ratio (A)/(B) is preferably 75/25～1/99, more preferably 65/35～3/97, more preferably 50/50～10/90, especially It is preferably 40/60～15/85.By making block copolymerization than for this scope, thus it is prone to show aptly Go out suitable decomposability and poly-(methyl) third that poly-(methyl) acrylate chains (A) is brought The characteristics such as the cohesive of olefin(e) acid ester chain (B).

Aforesaid propylene acid based polymer such as can occur by making the mixture of aforesaid propylene acrylic monomer Raolical polymerizable manufactures.As the manufacture method of aforesaid propylene acid based polymer, specifically, Can list living radical polymerization, use that azo series initiators or peroxide carry out existing Known radical polymerization.Wherein, for using the situation of living radical polymerization, will not Cause the side reactions such as the chain transfer reaction in radical polymerization process, stopped reaction, low molecule can be suppressed The generation of amount composition, can manufacture the acrylic acid series polymeric compounds of narrow molecular weight distribution, the most preferably.

As above-mentioned living radical polymerization, such as, can list: atom transferred free radical gathers Legal (ATRP method), use and comprise high cycle 15 race or the organic hybrid compound of 16 race's elements As the living radical polymerization of catalyst (using organic hybrid compound as the radical polymerization of medium Legal) (TERP method etc.), living radical polymerization (NMP method), reversible by nitroxide Addition fracture chain transfer polymerization reaction method (RAFT method) etc..

Above-mentioned Transfer Radical Polymerization (ATRP method) be at such as transition metal complex and In the presence of organohalogen compounds, make the method that above-mentioned acrylic monomer carries out being polymerized.

As constitute above-mentioned transition metal complex transition metal, such as can use Cu, Ru, Fe, Rh, V, Ni or their halogenide.Additionally, as with the joining of above-mentioned transition-metal coordination Body, can list dipyridyl derivatives, thiol derivative, trifluoro acid esters (trifluorate) derive Thing, tertiary alkanamine derivatives etc..

Above-mentioned organohalogen compounds are polymerization initiator, such as, can use 2-bromine (or chlorine) propanoic acid first Ester, 2-bromine (or chlorine) ethyl propionate, 2-bromine (or chlorine)-2 Methylpropionic acid methyl ester, 2-bromine (or chlorine) -2 Methylpropionic acid ethyl ester, 1-phenylethyl chlorine (or bromine) (chloro (or bromo) 1-phenylethyl), 2-bromine (or chlorine) propanoic acid 2-hydroxy methacrylate, 2-bromine (or chlorine) propanoic acid 4-hydroxybutyl, 2-bromine (or Chlorine)-2 Methylpropionic acid 2-hydroxy methacrylate, 2-bromine (or chlorine)-2 Methylpropionic acid 4-hydroxybutyl etc..

Using organic hybrid compound as the radical polymerization of medium be at organic hybrid compound and The method that aforesaid propylene acrylic monomer carries out being polymerized is made in the presence of radical initiator.Utilize and this is had Machine hybrid compounds is as the radical polymerization of medium, it is easy to make the molecular weight of acrylic copolymer Macromolecule quantifies, it is easy to improve bonding force, the most preferably.

The organic hybrid used as the radical polymerization using organic hybrid compound as medium Compound, preferably can use Organic Tellurium Compounds, organic two tellurides compounds, organo-bismuth chemical combination Thing, organo-antimony compound.As the concrete example of above-mentioned organic hybrid compound, can suitably use: Japanese Unexamined Patent Publication 2004-323693 publication, WO2004/14818 publication, Japanese Unexamined Patent Publication 2006-225524 publication, Japanese Unexamined Patent Publication 2006-299278 publication, Japanese Unexamined Patent Publication 2008-291216 Organic Tellurium Compounds disclosed in number publication, Japanese Unexamined Patent Publication 2009-149877 publication etc., organic two Tellurides compound, in Japanese Unexamined Patent Publication 2009-149877 publication, WO2006/62255 publication etc. Disclosed bismuth organic compound, Japanese Unexamined Patent Publication 2009-149877 publication, WO2006/1496 are public The known compounds such as the organo-antimony compound disclosed in report etc..Specifically, for example, it is preferable to permissible Exemplify: 2-methyl tellurium alkyl (tellanyl)-2 Methylpropionic acid methyl ester, 2-methyl tellurium alkyl-2-methyl Ethyl propionate, 2-normal-butyl-2-phenyl tellurium alkylpropionic acids ethyl ester, 2-methyl-2-phenyl tellurium alkylpropionic acids second Ester, 2-methyl tellurium alkyl propionitrile, 2-methyl-2-methyl tellurium alkyl propionitrile, (methyl tellurium Alkyl-methyl) Benzene, (1-methyl tellurium alkyl-ethyl) benzene, (2-methyl tellurium alkyl-propyl group) benzene, (1-phenyl tellurium alkyl -ethyl) benzene, 2-methyl-2-normal-butyl tellurium alkyl-ethyl propionate, 2-methyl-2-dimethyl bismuth alkyl (bismuthanyl) methyl propionate, 2-methyl-2-diphenyl bismuth alkyl propionitrile, 2-methyl-2-dimethyl Phenyl bismuth alkyl propionitrile, 2-methyl-2-dimethyl antimony alkyl (stibanyl) methyl propionate, 2-methyl-2- Dimethyl antimony alkyl propionitrile, 1-dimethyl antimony alkyl-1-diphenylphosphino ethane, dimethyl two tellurides, diethyl Base two tellurides, diη-propyl two tellurides, diisopropyl two tellurides, Bicyclopropyl two tellurides, Di-n-butyl two tellurides, di-sec-butyl two tellurides, di-t-butyl two tellurides, two cyclobutyl two Tellurides, diphenyl two tellurides, double-(p-methoxyphenyl) two tellurides, double-(to amino Phenyl) two tellurides, double-(p-nitrophenyl) two tellurides, double-(to cyano-phenyl) two tellurium Compound, double-(to sulfonvlphenyl) two tellurides, dinaphthyl two tellurides, bipyridyl two tellurium Compound etc..Preferably can exemplify dimethyl two tellurides, diethyl two tellurides, diη-propyl two The compounds such as tellurides, di-n-butyl two tellurides, diphenyl two tellurides.

Additionally, aforesaid propylene acid based polymer such as can also manufacture as follows: utilize above-mentioned freedom Base polymerization makes above-mentioned (methyl) acrylate monomer (a) containing carboxyl precursor groups be polymerized, Thus manufacture by the homopolymerization of above-mentioned (methyl) acrylate monomer (a) with carboxyl precursor groups Poly-(methyl) acrylate chains (A) that thing is formed, then, utilizes method same as described above Manufacturing poly-(methyl) acrylate chains (B), recycling is led in above-mentioned (A) and (B) respectively The cycloaddition reactions of the acetenyl entered and azido etc. are clicked on (click) and are reacted, and make described poly-(first Base) acrylate chains (A) and (B) bonding.

[acid catalyst, acid-producing agent]

As acid catalyst used in the present invention, for example, it is possible to from p-methyl benzenesulfonic acid, benzenesulfonic acid Deng the mineral acids such as the organic acid such as aromatic sulphonic acid, aliphatic sulfonic, hydrochloric acid or sulphuric acid and they Hydrate etc. suitably select and uses.

Acid-producing agent used in the present invention is for example: can be by utilizing ultraviolet homenergic ray Light irradiates and causes the Photoacid generator producing acid of cationic polymerization, produces acid by heating etc. Thermal acid generator.Wherein, Photoacid generator can be made by light and heat both outside stimuluss Adhesive phase decomposes aptly, on the other hand, when being taken care of as adhesive composition or work When being fixed by article for adhesive tape, it is difficult to easily disintegrate, decompose, it is possible to keep stable Keeping quality, adhesion characteristic, therefore particularly preferably used.

As above-mentioned Photoacid generator, such as can be from N-hydroxynaphthylimide trifluoromethayl sulfonic acid Ester, N-hydroxynaphthylimide methane sulfonate, N-hydroxynaphthylimide benzene sulfonate, N-hydroxyl naphthalene Acid imide triflate, double (cyclohexylsulfonyl) Azimethylene., double (tert. butylsulfonyl) Azimethylene., double (p-toluenesulfonyl) Azimethylene., triphenylsulfonium triflate alkyl sulfonic acid ester, two Phenyl-4-aminomethyl phenyl sulfonium trifluoromethayl sulfonic acid ester, diphenyl-2,4,6-trimethylphenyl sulfoniums-to toluene Sulphonic acid ester, double (dodecylphenyl) iodine hexafluoro antimonate, double (tert-butyl-phenyl) iodine six Fluorophosphate, double (tert-butyl-phenyl) iodine trifluoro-methanyl sulfonate, triphenylsulfonium triflate alkane sulphur Hydrochlorate, biphenyl iodine trifluoro-methanyl sulfonate, phenyl-(3-hydroxyl-pentadecylphenyl) iodine six Fluorine antimonate and phenyl-(3-hydroxypentadecanoic base phenyl) iodine hexafluoro antimonate etc. suitably select Select and used.

As long as these Photoacid generators suitably select according to the purposes used.Such as, have Time these acid-producing agents cause heat decomposition temperature to reduce because of the mixing with binding agent, therefore, wherein, Just use N-hydroxynaphthylimide trifluoromethayl sulfonic acid ester, double (cyclohexylsulfonyl) Azimethylene. Be about Deng the single heat decomposition temperature of acid-producing agent the Photoacid generator of more than 150 DEG C situation and Speech, from prevent preserve time etc. because of heat impact and produce acid and make adhesive composition carry out the side decomposed Face considers, is preferred.

Additionally, in Photoacid generator, just pair (cyclohexylsulfonyl) Azimethylene .s etc. are because adding Heat and for producing the Photoacid generator of gas, by producing acid based on light and based on heating Produce gas, thus be particularly susceptible for realizing high de-agglomeration, the most preferably.With regard to N-hydroxynaphthylimide Even if trifluoromethayl sulfonic acid esters etc. are not easy to produce the photic acid of gas by the heating of about 100 DEG C For propellant, the adhesive phase high owing to heat stability can be obtained, the most preferably.

And, in Photoacid generator, absorb with regard to skeleton has the light such as phenyl ring, naphthalene ring For the Photoacid generator of the structure of property, due to can be by few light irradiation time, few content Realize decomposability, be thus susceptible to reduce manufacturing cost, disaggregated cost, thus preferably.On the other hand, For not there is the Photoacid generator of the structure of these light absorption, preferably go for needs Light is irradiated the situation with stability.

Additionally, as above-mentioned thermal acid generator, it is possible to use sulfonium salt, benzothiazole (benZothiaZonium) salt, ammonium salt, squama salt, such as can be from 4-acetoxyl group phenyl dimethyl Sulfonium hexafluoro arsenate, benzyl-4-hydroxyphenylmethyl sulfonium hexafluoro antimonate, 4-acetoxyl group phenyl benzyl Methyl sulfonium hexafluoro antimonate, dibenzyl-4-hydroxy phenyl sulfonium hexafluoro antimonate, 4-acetoxyl group phenyl benzyl Suitable in base sulfonium hexafluoro antimonate and 3-benzyl benzothiazole hexafluoro antimonate etc. select and in addition Use.

[adhesive composition]

While the adhesive composition of the present invention contains aforesaid propylene acid based polymer, possibly together with acid Catalyst or acid-producing agent.For the adhesive phase formed by this adhesive composition, when attaching, Mainly show the bonding to adherend aptly by poly-(methyl) acrylate chains (B) special Property.Additionally, when decomposing, produce at acid catalyst or because of outside stimuluss such as heating, exposures In the presence of the acid-producing agent of raw acid, by carrying out heating, light irradiates, thus poly-(methyl) propylene (preferably (methyl) acryloxy is bonded the carboxyl precursor groups of the side chain of acid esters chain (A) Secondary carbon or tertiary carbon atom) it is decomposed, bonding force reduces, and has this point by comprising with block-wise The construction unit of solution property, thus improves discomposing effect, can suppress the generation of stick-slip when peeling off, can To realize good decomposition.

As the acid catalyst in adhesive composition or the content of acid-producing agent, as long as according to being made Acid catalyst or the kind of acid-producing agent, required decomposability suitably adjust, phase The carboxyl precursor that (methyl) acrylate monomer (a) containing carboxyl precursor groups is had Group 1 mole, preferably comprises 10 moles of below %, particularly preferably containing 1～10 mole of %.Its In, when using the Photoacid generator of the structure with light absorption, preferably 0.1～5 mole % Left and right, particularly preferably 0.1～3 mole %.On the other hand, when use, not there is light absorption During the Photoacid generator of structure, preferably 3～10 moles about %, particularly preferably 4～8 rub You are %.

For the acrylic acid series polymeric compounds used, relative to aforesaid propylene acid based polymer 100 matter Amount part, preferably comprises acid catalyst or the acid-producing agent of below 15 mass parts.Wherein, when making apparatus When having the Photoacid generator of structure of light absorption, relative to aforesaid propylene acid based polymer 100 Mass parts, about preferably 0.1～5 weight portions, particularly preferably 0.2～3 weight portions.The opposing party Face, when using the Photoacid generator of the structure without light absorption, relative to aforesaid propylene acid Based polymer 100 mass parts, about preferably 5～15 weight portions, particularly preferably 7～12 weight Part.

The adhesive composition of the present invention is as main composition composition containing acrylic acid series polymeric compounds Acrylic adhesive composition, can be to contain only above-mentioned acrylic acid series polymeric compounds as acrylic acid The adhesive composition of based polymer, it is also possible to be the bonding of the acrylic acid series polymeric compounds possibly together with other Agent compositions.In addition it is also possible to contain tackifying resin, cross-linking agent, other additive as required Deng.

(tackifying resin)

In the adhesive composition of the present invention, in order to adjust the strong cementability of the adhesive phase of gained, Tackifying resin can be used.As tackifying resin used in the present invention, such as, can exemplify Colophonium System, newtrex system, newtrex ester system, Colophonium phenol system, stabilisation rosin ester system, disproportionated rosin Ester system, terpenic series, terpene phenolic system, Petropols system etc..

(solvent)

In the adhesive composition of the present invention, it is possible to use adhesive composition institute is normally used Solvent, such as can use toluene, dimethylbenzene, ethyl acetate, butyl acetate, acetone, butanone, Hexane etc..Additionally, formed in the case of aqueous adhesive compositions, it is possible to use water or with Water is the aqueous solvent of main body.

(cross-linking agent)

In the adhesive composition of the present invention, in order to improve the cohesiveness of the adhesive phase of gained, Further preferably use cross-linking agent.As cross-linking agent, it is possible to use known isocyanates system cross-linking agent, ring Oxygen system cross-linking agent, aziridine system cross-linking agent, multivalent metal salt system cross-linking agent, metal-chelating system cross-link Agent, ketone-hydrazides system cross-linking agent, oxazoline system cross-linking agent, carbodiimide system cross-linking agent, silane system hand over Connection agent, glycidyl (alkoxyl) epoxy silane system cross-linking agent etc..

(additive)

In the adhesive composition of the present invention, as additive, can not hinder as required In the range of the required effect of the present invention, by be used for regulating the alkali (ammonia etc.) of pH or acid, Foaming agent, plasticizer, softening agent, antioxidant, glass or plastic fiber ball gold Belong to the coloring agent such as filler, pigment dye such as powder, pH adjusting agent, epithelium formation auxiliary agent, stream The known additive such as flat agent, thickening agent, water-repelling agent, defoamer at random adds binding agent combination to In thing.

Above-mentioned foaming agent can use from the standpoint of the decomposition carrying out binding agent, the most permissible Use and volumetric expansion, inorganic foaming agent, organic foaming agent and thermal expansion occur by carrying out heating Property hollow sphere etc..

[easy decomposability adhesive tape]

The easy decomposability adhesive tape of the present invention is the binding agent having and comprising above-mentioned adhesive composition The adhesive tape of layer.Adhesive phase can be the layer of the binding agent of monolayer, it is also possible to bond for laminated multi-layer The adhesive phase of the layer of agent.Furthermore, it is possible to be the adhesive tape with base material, it is also possible to be not have The form of the adhesive tape having base material and be only made up of adhesive phase.Furthermore, it is possible to be only at the one of base material Mask has the form of adhesive phase, it is also possible to be the both-sided adhesive on the two sides of base material with adhesive phase The form of band.In the fixed-purpose of plural component, can suitably use only by adhesive phase The adhesive tape of composition, double-faced adhesive tape.

As above-mentioned base material, such as can use comprise polyolefin (such as polypropylene, polyethylene), Polyester (such as polyethylene terephthalate, PEN), polystyrene, The plastics mesentery of ABS, Merlon, polyimide film, polrvinyl chloride, nylon, polyvinyl alcohol etc., Comprise the non-woven fabrics of slurry class, staple fibre, abaca, acrylonitrile, nylon, polyester etc., paper, Cloth or metal forming etc., from the viewpoint of being prone to take into account releasable and cementability, can suitably make With polyester mesentery, non-woven fabrics.

Additionally, for the adaptation improving base material and adhesive phase, can be to the one side of base material or two Sided corona treatment, Cement Composite Treated by Plasma, anchoring coating (anchor coat) process etc. are implemented in face.

The easy decomposability adhesive tape of the present invention, can be by the following method in the case of having base material Manufacture: after using roll coater or die coating machine etc. to be coated directly onto on base material by above-mentioned adhesive composition, Through drying process, make the straight coating that distance piece is fitted；Temporary transient coating adhesive combination on distance piece Thing, after drying process, is needed on the transfer printing of base material.In the case of not there is base material, Can be come by coating adhesive compositions on distance piece the method making other distance piece fit Manufacture.

For the easy decomposability adhesive tape of the present invention, by using the applicator of gap 8milli-inch Above-mentioned easy decomposability adhesive composition is coated on the PET film that thickness is 50 μm, does Dry, thus form adhesive tape, in the environment of 23 DEG C of 50%RH, on SUS plate, make weight 2kg Hand roller crimp for reciprocal 1 time, after standing 1 hour, use Tensile Tester with 30mm/ Minute speed, peel off on 180 ° of directions, bonding force now be preferably 1N/20mm with On, more preferably 2～30N/20mm, particularly preferably 3～20N/20mm.The present invention easily divides Even if solution property adhesive tape has suitable high bonding force when fixing between parts, it is possible to realize suitable dividing Xie Xing.

(decomposition method)

For the easy decomposability adhesive tape of the present invention, it is adhered to well be glued object when attaching Or be fixed between parts, when carrying out decomposing, peeling off, it is possible to by based on heat, the outside thorn of light Swash and peel off well.With regard to heat, light outside stimulus for, as long as according to the acid catalyst used Or acid-producing agent suitably adjusts, but preferably attach time common occupation mode in not Can peel off under the temperature that can occur or the heat of intensity, optical condition.

In the case of the easy decomposability adhesive tape of the present invention contains acid catalyst, by by heating The disengaging promoting carboxyl precursor groups is reacted, and the mobility by adhesive phase increases and makes acid Spread the most within the adhesive layer, adhesive tape thus can be made to decompose aptly.Additionally, containing By heat, light and produce acid acid-producing agent in the case of, by carry out light irradiation, heating and produce Acid, thus adhesive tape can be made to decompose aptly, in the presence of this acid, by further Carry out heating etc., thus by promoting that the disengaging of carboxyl precursor groups is reacted, by binding agent further The acid diffusion caused by mobility increase of layer, and adhesive tape can be made the most aptly to decompose.Especially It is that being produced by light such as irradiation ultraviolet radiations can in the present invention, it is preferred to use Photoacid generator Make the acid that binding agent decomposes, then, by heating, and make by the binding agent caused by above-mentioned acid Decomposition carry out efficiently.

As long as the intensity of the light such as ultraviolet produces the energy of acid aptly by the Photoacid generator used Amount is above, additionally, for heating up temperature, as long as producing acid aptly at thermal acid generator Temperature carried out above heat.Additionally, for the heating-up temperature in the presence of acid, as long as according to Following temperature is adjusted, i.e. glass transition temperature based on adhesive composition makes to glue The temperature that the mobility of mixture layer rises and acid can be made effectively to spread, or promote carboxyl precursor groups Depart from reaction and effectively carry out the temperature of side chain decomposition.

For the easy decomposability adhesive tape of the present invention, bonding insufficient, again in operation sequence During separation between member during circulation, having can by outside stimuluss such as heat, light easily The releasable decomposed.Therefore, suitable as carrying out the works such as automobile, building materials, OA, household electrical appliances industry Bonding fixing between the parts of the various goods in industry purposes brings use.Especially utilizing adhesive tape Slim image display that organic EL panel or liquid crystal panel etc. are used, there is transparent leading The transparent conducting glass of electric layer, the slim glass etc. such as glass of protecting of panel surface are susceptible to crackle In the case of component is fixed, if there is stick-slip when peeling off, then peeling force temporarily increases, because of And parts easily crack, but utilize the adhesive tape of the present invention, in this portion being prone to and cracking In part, it is also possible to do not decompose with not cracking.The decomposability being additionally, since in the short time is excellent, Therefore, during bad when operation sequence, the separation of a large amount of parts when carrying out recirculation or carry out During substantial amounts of label peeling etc., operating efficiency is the best.

Embodiment

(manufacturing example 1)

The synthesis of the polyacrylic acid tert-butyl ester (1): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 1.15mg, tert-butyl acrylate (tBA) 1.48g and ethyl acetate 2.95g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 4.25 μ L is added in test tube by emitter, reacts 2 little in the oil bath of 50 DEG C Time, obtain the reaction solution of the polyacrylic acid tert-butyl ester (1).Utilize¹H-NMR (300MHz) point Analysis understands: aggregate rate is 74%.Additionally, utilize gpc analysis to understand: Mn=68,600, PD (Mw/Mn)=1.32.

The synthesis of acrylic block copolymer (1): by the polyacrylic acid tert-butyl ester obtained above (1), in reaction solution, the n-butyl acrylate of the bubbling argon having carried out 30 minutes in advance is added (nBA) 5.76g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.23g, at 50 DEG C Lower reaction 12 hours.Utilize¹H-NMR (300MHz) analyzes and understands, gathering of tert-butyl acrylate Conjunction rate is 90%, and the aggregate rate of n-butyl acrylate is 60%, the polymerization of acrylic acid 2-hydroxy methacrylate Rate is 62%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (1) with the polyacrylate chain of the copolymer composition comprising other.Utilize Gpc analysis understands: Mn=239, and 200, Mw=354,000, PD=1.48.Structure in copolymer The mass ratio becoming composition is tBA/nBA/HEA=29.2/67.2/3.6.

(manufacturing example 2)

The synthesis of the polyacrylic acid tert-butyl ester (2): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 1.21mg, tert-butyl acrylate 1.33g and the mixing of ethyl acetate 2.66g Solution puts into test tube, is de-gassed by the bubbling argon of 30 minutes.Use microsyringe will Organic single tellurium compound 4.49 μ L adds in test tube, reacts 2 hours in the oil bath of 50 DEG C, Reaction solution to the polyacrylic acid tert-butyl ester (2).Utilize¹H-NMR (300MHz) analyzes and understands: Aggregate rate is 79%.Additionally, utilize gpc analysis to understand: Mn=73,800, PD=1.26.

The synthesis of acrylic block copolymer (2): by the polyacrylic acid tert-butyl ester obtained above (2), in reaction solution, the n-butyl acrylate of the bubbling argon having carried out 30 minutes in advance is added 5.90g and the mixed solution of acrylic acid 2-hydroxy methacrylate 1.16g, react 3 hours at 50 DEG C.Profit Analyze with 1H-NMR (300MHz) and understand: the aggregate rate of tert-butyl acrylate is 90%, propylene The aggregate rate of acid 2-Octyl Nitrite is 42%, and the aggregate rate of n-butyl acrylate is 49%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, under reduced pressure it is vacuum dried 10 hours at 40 DEG C, obtains acrylic block copolymer (2). Gpc analysis is utilized to understand: Mn=266,300, Mw=570,000, PD=2.14.Copolymer In the mass ratio of constituent be tBA/nBA/HEA=33.2/53.1/13.7.

(manufacturing example 3)

The synthesis of the polyacrylic acid tert-butyl ester (3): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.93mg, tert-butyl acrylate 1.71g and the mixing of ethyl acetate 3.42g Solution puts into test tube, is de-gassed by the bubbling argon of 30 minutes.Use microsyringe will Organic single tellurium compound 3.43 μ L adds in test tube, reacts 2 hours in the oil bath of 50 DEG C, Reaction solution to the polyacrylic acid tert-butyl ester (3).Utilize¹H-NMR (300MHz) analyzes and understands: Aggregate rate is 76%.Additionally, utilize gpc analysis to understand: Mn=93,200, PD=1.30.

The synthesis of acrylic block copolymer (3): by the polyacrylic acid tert-butyl ester obtained above (3), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 5.66g, acrylic acid 2-hydroxy methacrylate 0.23g, react 4 hours at 50 DEG C. Utilize¹H-NMR (300MHz) analyzes and understands: the aggregate rate of tert-butyl acrylate is 87%, third The aggregate rate of olefin(e) acid 2-Octyl Nitrite is 46%, and the aggregate rate of acrylic acid 2-hydroxy methacrylate is 52%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, under reduced pressure it is vacuum dried 10 hours at 40 DEG C, obtains acrylic block copolymer (3). Gpc analysis is utilized to understand: Mn=257,800, Mw=383,000, PD=1.49.Copolymer In the mass ratio of constituent be tBA/2EHA/HEA=35.3/61.5/3.2.

(manufacturing example 4)

The synthesis of the polyacrylic acid tert-butyl ester (4): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.86mg, tert-butyl acrylate 1.46g and the mixing of ethyl acetate 1.46g Solution puts into test tube, is de-gassed by the bubbling argon of 30 minutes.Use microsyringe will Organic single tellurium compound 3.19 μ L adds in test tube, reacts 2 hours in the oil bath of 50 DEG C, Reaction solution to the polyacrylic acid tert-butyl ester (4).Utilize¹H-NMR (300MHz) analyzes and understands: Aggregate rate is 79%.Additionally, utilize gpc analysis to understand: Mn=73,800, PD=1.28.

The synthesis of acrylic block copolymer (4): by the polyacrylic acid tert-butyl ester obtained above (4), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester 4.48g, acrylic acid 2-hydroxy methacrylate 0.82g and the mixed solution of ethyl acetate 5.30g, React 7 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands, tert-butyl acrylate Aggregate rate be 82%, the aggregate rate of 2-EHA is 49%, acrylic acid 2-hydroxyl second The aggregate rate of ester is 58%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, under reduced pressure it is vacuum dried 10 hours at 40 DEG C, obtains acrylic block copolymer (4). Gpc analysis is utilized to understand: Mn=265,000, Mw=462,000, PD=1.74.Copolymer In the mass ratio of constituent be tBA/2EHA/HEA=29.0/56.9/14.1.

(manufacturing example 5)

By double for 2,2 '-azo (4-methoxyl group-2,4-methyl pentane nitrile) (AMVN) 1.23mg, propylene Tert-butyl acrylate 1.89g, n-butyl acrylate 3.29g, acrylic acid 2-hydroxy methacrylate 0.16g and acetic acid second The mixed solution of ester 2.05g puts into test tube, is de-gassed by the bubbling argon of 30 minutes.Make With microsyringe, organic single tellurium compound 4.55 μ L is added in test tube, in the oil bath of 50 DEG C React 5 hours.Utilize¹H-NMR (300MHz) analyzes and understands, the polymerization of tert-butyl acrylate Rate is 91%, and the aggregate rate of n-butyl acrylate is 90%, the degree of polymerization of acrylic acid 2-hydroxy methacrylate It is 90%.After reaction terminates, polymeric solution is injected methanol: in water (80: 20 volume fraction) Make polymer precipitate, remove supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, Inject methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Removed by decant After clear liquid, under reduced pressure it is vacuum dried 10 hours at 40 DEG C, obtains acrylic acid series random copolymer (1).Gpc analysis is utilized to understand: Mn=277,100, Mw=463,000, PD=1.67. The mass ratio of the constituent in copolymer is tBA/nBA/HEA=35.5/61.1/3.4.

(manufacturing example 6)

By double for 2,2 '-azo (4-methoxyl group-2,4-methyl pentane nitrile) (AMVN) 0.96mg, propylene Tert-butyl acrylate 1.89g, n-butyl acrylate 3.11g, acrylic acid 2-hydroxy methacrylate 0.65g and acetic acid second The mixed solution of ester 5.65g puts into test tube, is de-gassed by the bubbling argon of 30 minutes.Make With microsyringe, organic single tellurium compound 3.56 μ L is added in test tube, in the oil bath of 50 DEG C React 4 hours.Utilize¹H-NMR (300MHz) analyzes and understands: the polymerization of tert-butyl acrylate Rate is 77%, and the aggregate rate of n-butyl acrylate is 76%, the degree of polymerization of acrylic acid 2-hydroxy methacrylate It is 79%.After reaction terminates, polymeric solution is injected methanol: in water (80: 20 volume fraction) Make polymer precipitate, remove supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, Inject methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Removed by decant After clear liquid, under reduced pressure it is vacuum dried 10 hours at 40 DEG C, obtains acrylic acid series random copolymer (2).Gpc analysis is utilized to understand: Mn=253,400, Mw=475,000, PD=1.88. The mass ratio of the constituent in copolymer is tBA/nBA/HEA=33.5/53.7/12.8.

(manufacturing example 7)

By double for 2,2 '-azo (4-methoxyl group-2,4-methyl pentane nitrile) (AMVN) 0.49mg, propylene Tert-butyl acrylate (tBA) 1.00g, 2-EHA (2EHA) 1.63g, acrylic acid 2- The mixed solution of hydroxy methacrylate (HEA) 0.40g and ethyl acetate 3.01g puts into test tube, by 30 Minute bubbling argon be de-gassed.Use microsyringe by organic single tellurium compound 1.83 μ L Add in test tube, react 2 hours in the oil bath of 50 DEG C.Utilize¹H-NMR(300MHz) Analyze and understand: the aggregate rate of tert-butyl acrylate is 77%, the aggregate rate of 2-EHA Being 73%, the aggregate rate of acrylic acid 2-hydroxy methacrylate is 81%.

After reaction terminates, chloroform 20mL is used to be diluted by polymeric solution, injection methanol: water (80: 20 volume fractions) in make polymer precipitate, remove supernatant by decant.By molten for the precipitation of gained Solution, in chloroform 50mL, injects methanol: make polymer sink in water (80: 20 volume fraction) again Form sediment.After removing supernatant by decant, under reduced pressure it is vacuum dried 10 hours at 40 DEG C, obtains Acrylic acid series random copolymer (3).Gpc analysis is utilized to understand: Mn=285,700, Mw=580, 300, PD=2.03.The mass ratio of the constituent in copolymer is tBA/2EHA/HEA =33.2/51.9/14.9.

(manufacturing example 8)

The synthesis of polyacrylic acid cyclohexyl (1): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 2.39mg, 2,2 '-azo double (isopropyl cyanide) (AIBN) 0.39mg, hexichol Base two tellurides (DPDT) 2.28mg, cyclohexyl acrylate (CHA) 1.30g and methyl phenyl ethers anisole 2.60g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.At the oil of 60 DEG C Bath is reacted 4 hours, obtains the reaction solution of polyacrylic acid cyclohexyl (1).Utilize¹H-NMR (300MHz) knowable to analyzing: aggregate rate is 43%.Additionally, utilize gpc analysis to understand: Mn=40, 000, PD=1.50.

The synthesis of acrylic block copolymer (5): by polyacrylic acid cyclohexyl obtained above (1), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 4.17g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 1.07g, React 18 hours at 60 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: acrylic acid ring The aggregate rate of own ester is 46%, and the aggregate rate of 2-EHA is 16%, acrylic acid 2-hydroxyl The aggregate rate of base ethyl ester is 22%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising cyclohexyl acrylate chain, Acrylic block copolymer (5) with the polyacrylate chain of the copolymer composition comprising other.Utilize Gpc analysis understands: Mn=95, and 000, Mw=216,600, PD=2.28.Structure in copolymer The mass ratio becoming composition is CHA/2EHA/HEA=40.2/40.9/18.9.

(manufacturing example 9)

The synthesis of the polyacrylic acid tert-butyl ester (5): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.74mg, tert-butyl acrylate (tBA) 1.28g and ethyl acetate 2.55g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 2.74 μ L is added in test tube by emitter, reacts 2 little in the oil bath of 50 DEG C Time, obtain the reaction solution of the polyacrylic acid tert-butyl ester (5).Utilize¹H-NMR (300MHz) point Analysis understands: aggregate rate is 69%.Additionally, utilize gpc analysis to understand: Mn=65,600, PD=1.29.

The synthesis of acrylic block copolymer (6): by the polyacrylic acid tert-butyl ester obtained above (5), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 4.33g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.47g, React 4 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 83%, and the aggregate rate of 2-EHA is 42%, acrylic acid 2-hydroxyl The aggregate rate of ethyl ester is 49%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (6) with the polyacrylate chain of the copolymer composition comprising other.Utilize Gpc analysis understands: Mn=187, and 900, Mw=268,200, PD=1.43.Structure in copolymer The mass ratio becoming composition is tBA/2EHA/HEA=33.5/58.4/8.1.

(manufacturing example 10)

The synthesis of the polyacrylic acid tert-butyl ester (6): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.68mg, tert-butyl acrylate (tBA) 1.31g and ethyl acetate 2.61g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 2.53 μ L is added in test tube by emitter, reacts 2.5 in the oil bath of 50 DEG C Hour, obtain the reaction solution of the polyacrylic acid tert-butyl ester (6).Utilize¹H-NMR(300MHz) Analyze and understand: aggregate rate is 68%.Additionally, utilize gpc analysis to understand: Mn=73,700, PD=1.28.

The synthesis of acrylic block copolymer (7): by the polyacrylic acid tert-butyl ester obtained above (6), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 4.45g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.36g, React 4 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 85%, and the aggregate rate of 2-EHA is 45%, acrylic acid 2-hydroxyl The aggregate rate of ethyl ester is 50%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50nL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (7) with the polyacrylate chain of the copolymer composition comprising other.Utilize Gpc analysis understands: Mn=203, and 600, Mw=302,900, PD=1.49.Structure in copolymer The mass ratio becoming composition is tBA/2EHA/HEA=32.9/61.3/5.8.

(manufacturing example 11)

The synthesis of the polyacrylic acid tert-butyl ester (7): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.97mg, tert-butyl acrylate (tBA) 1.67g and ethyl acetate 3.34g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 3.59 μ L is added in test tube by emitter, reacts 2 little in the oil bath of 50 DEG C Time, obtain the reaction solution of the polyacrylic acid tert-butyl ester (7).Utilize¹H-NMR (300MHz) point Analysis understands: aggregate rate is 73%.Additionally, utilize gpc analysis to understand: Mn=61,900, PD=1.26.

The synthesis of acrylic block copolymer (8): by the polyacrylic acid tert-butyl ester obtained above (7), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 5.66g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.62g, React 6 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 81%, and the aggregate rate of 2-EHA is 34%, acrylic acid 2-hydroxyl The aggregate rate of ethyl ester is 42%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (8) with the polyacrylate chain of the copolymer composition comprising other.Utilize Gpc analysis understands: Mn=140, and 200, Mw=196,400, PD=1.40.Structure in copolymer The mass ratio becoming composition is tBA/2EHA/HEA=38.5/54.0/7.6.

(manufacturing example 12)

The synthesis of the polyacrylic acid tert-butyl ester (8): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.73mg, tert-butyl acrylate (tBA) 0.82g and ethyl acetate 1.64g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 2.71 μ L is added in test tube by emitter, reacts 2 little in the oil bath of 50 DEG C Time, obtain the reaction solution of the polyacrylic acid tert-butyl ester (8).Utilize¹H-NMR (300MHz) point Analysis understands: aggregate rate is 72%.Additionally, utilize gpc analysis to understand: Mn=43,100, PD=1.26.

The synthesis of acrylic block copolymer (9): by the polyacrylic acid tert-butyl ester obtained above (8), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 5.20g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.96g, React 4 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 81%, and the aggregate rate of 2-EHA is 46%, acrylic acid 2-hydroxyl The aggregate rate of ethyl ester is 57%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (9) with the polyacrylate chain of the copolymer composition comprising other.Utilize Gpc analysis understands: Mn=215, and 000, Mw=357,500, PD=1.66.Structure in copolymer The mass ratio becoming composition is tBA/2EHA/HEA=17.0/66.5/16.5.

(manufacturing example 13)

The synthesis of the polyacrylic acid tert-butyl ester (9): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.77mg, tert-butyl acrylate (tBA) 0.35g and ethyl acetate 1.40g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 2.84 μ L is added in test tube by emitter, reacts 2 little in the oil bath of 50 DEG C Time, obtain the reaction solution of the polyacrylic acid tert-butyl ester (9).Utilize¹H-NMR (300MHz) point Analysis understands: aggregate rate is 50%.Additionally, utilize gpc analysis to understand: Mn=15,700, PD=1.21.

The synthesis of acrylic block copolymer (10): by the tertiary fourth of polyacrylic acid obtained above In the reaction solution of ester (9), add the acrylic acid 2-of the bubbling argon having carried out 30 minutes in advance Octyl Nitrite (2EHA) 6.13g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 1.28g, React 6 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 62%, and the aggregate rate of 2-EHA is 42%, acrylic acid 2-hydroxyl The aggregate rate of ethyl ester is 58%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (10) with the polyacrylate chain of the copolymer composition comprising other.Profit Understand with gpc analysis: Mn=253,000, Mw=394,700, PD=1.56.In copolymer The mass ratio of constituent be tBA/2EHA/HEA=3.9/72.9/23.3.

(manufacturing example 14)

The synthesis of the polyacrylic acid tert-butyl ester (10): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 2.28mg, 2,2 '-azo double (isopropyl cyanide) (AIBN) 0.89mg, hexichol Base two tellurides (DPDT) 2.16mg, tert-butyl acrylate (tBA) 1.30g and ethyl acetate The mixed solution of 2.60g puts into test tube, is de-gassed by the bubbling argon of 30 minutes.At 60 DEG C Oil bath in react 2.5 hours, obtain the reaction solution of the polyacrylic acid tert-butyl ester (10).Utilize¹H-NMR (300MHz) analyzes and understands: aggregate rate is 64%.Additionally, utilize the gpc analysis can Know: Mn=61,500, PD=1.58.

The synthesis of acrylic block copolymer (11): by the polyacrylic acid tert-butyl ester obtained above (10), in reaction solution, the acrylic acid 2-second of the bubbling argon having carried out 30 minutes in advance is added Base own ester (2EHA) 4.29g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.27g, React 3 hours at 60 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 83%, and the aggregate rate of 2-EHA is 49%, acrylic acid 2-hydroxyl The aggregate rate of ethyl ester is 63%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (11) with the polyacrylate chain of the copolymer composition comprising other.Profit Understand with gpc analysis: Mn=204,000, Mw=371,300, PD=1.82.In copolymer The mass ratio of constituent be tBA/2EHA/HEA=29.5/64.4/6.1.

(manufacturing example 15)

The synthesis of the polyacrylic acid tert-butyl ester (11): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.76mg, tert-butyl acrylate (tBA) 1.32g and ethyl acetate 2.63g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 2.80 μ L is added in test tube by emitter, reacts 2 little in the oil bath of 50 DEG C Time, obtain the reaction solution of the polyacrylic acid tert-butyl ester (11).Utilize¹H-NMR(300MHz) Analyze and understand: aggregate rate is 63%.Additionally, utilize gpc analysis to understand: Mn=55,700, PD=1.31.

The synthesis of acrylic block copolymer (12): by the tertiary fourth of polyacrylic acid obtained above In the reaction solution of ester (11), just adding the acrylic acid of the bubbling argon having carried out 30 minutes in advance Butyl ester (nBA) 4.86g and the mixed solution of acrylic acid 2-hydroxy methacrylate (HEA) 0.61g, React 5 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: tert-butyl acrylate Aggregate rate be 75%, the aggregate rate of n-butyl acrylate is 41%, acrylic acid 2-hydroxy methacrylate Aggregate rate is 48%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (12) with the polyacrylate chain of the copolymer composition comprising other.Profit Understand with gpc analysis: Mn=190,000, Mw=304,000, PD=1.60.In copolymer The mass ratio of constituent be tBA/nBA/HEA=28.2/61.4/10.4.

(manufacturing example 16)

The synthesis of the polyacrylic acid tert-butyl ester (12): by double for 2,2 '-azo (4-methoxyl group-2,4-dimethyl Valeronitrile) (AMVN) 0.74mg, tert-butyl acrylate (tBA) 1.26g and ethyl acetate 2.52g Mixed solution put into test tube, be de-gassed by the bubbling argon of 30 minutes.Use trace is noted Organic single tellurium compound 2.75 μ L is added in test tube by emitter, reacts 2.5 in the oil bath of 50 DEG C Hour, obtain the reaction solution of the polyacrylic acid tert-butyl ester (12).Utilize¹H-NMR(300MHz) Analyze and understand: aggregate rate is 75%.Additionally, utilize gpc analysis to understand: Mn=68,600, PD=1.28.

The synthesis of acrylic block copolymer (13): by the tertiary fourth of polyacrylic acid obtained above In the reaction solution of ester (12), add the acrylic acid 2-of the bubbling argon having carried out 30 minutes in advance Octyl Nitrite (2EHA) 4.23g and the mixed solution of acrylic acid 4-hydroxybutyl (HBA) 1.16g, React 3 hours at 50 DEG C.Utilize¹H-NMR (300MHz) analyzes and understands: the tertiary fourth of acrylic acid The aggregate rate of ester is 86%, and the aggregate rate of 2-EHA is 44%, acrylic acid 4-hydroxyl The aggregate rate of butyl ester is 46%.

After reaction terminates, polymeric solution is injected methanol: water (80: 20 volume fraction) makes to gather Compound precipitates, and removes supernatant by decant.Being precipitated and dissolved in gained in chloroform 50mL, note Enter methanol: water (80: 20 volume fraction) makes polymer reprecipitation.Supernatant is removed by decant After liquid, be under reduced pressure vacuum dried 10 hours at 40 DEG C, obtain comprising polyacrylic acid tert-butyl ester chain, Acrylic block copolymer (13) with the polyacrylate chain of the copolymer composition comprising other.Profit Understand with gpc analysis: Mn=192,500, Mw=321,600, PD=1.67.In copolymer The mass ratio of constituent be tBA/2EHA/HBA=30.3/53.6/16.1.

(embodiment 1)

In the acrylic block copolymer (1) obtained by above-mentioned manufacture example 1, relative to propylene The tert-butyl group in acid based block copolymer (1), adds the N-hydroxynaphthylimide trifluoro of 0.4mo1% Methanesulfonates (NIT), as Photoacid generator, uses acetone to be diluted, obtains comprising 15 The adhesive composition of the acetone soln of weight %.Use the applicator of gap 8milli-inch, by institute The adhesive composition obtained is coated on the PET film of thick 50 μm, carries out 12 hours drying under reduced pressure, Make bonding sheet.Test 1 according to following decomposability, the decomposability of the bonding sheet made is evaluated. The result of gained is shown in table 1 and Fig. 1.

(embodiment 2)

The acrylic block copolymer (2) obtained by above-mentioned manufacture example 2 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability.The result of gained is shown in table 1 and Fig. 2.

(embodiment 3)

The acrylic block copolymer (3) obtained by above-mentioned manufacture example 3 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability.The result of gained is shown in table 1 and Fig. 3.

(embodiment 4)

The acrylic block copolymer (4) obtained by above-mentioned manufacture example 4 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability.The result of gained is shown in table 1 and Fig. 4.

(comparative example 1)

The acrylic acid series random copolymer (1) obtained by above-mentioned manufacture example 5 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability.The result of gained is shown in table 1 and Fig. 5.

(comparative example 2)

The acrylic acid series random copolymer (2) obtained by above-mentioned manufacture example 6 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability.The result of gained is shown in table 1 and Fig. 6.

(comparative example 3)

The acrylic acid series random copolymer (3) obtained by above-mentioned manufacture example 7 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability according to following decomposability test 1.The result of gained is shown in table 1 And Fig. 7.

(embodiment 5)

Use in the acrylic block copolymer (5) obtained by above-mentioned manufacture example 8 relative to third The N-hydroxyl naphthoyl adding 0.4mo1% for cyclohexyl in olefin(e) acid based block copolymer (5) is sub- Amine triflate (NIT), as the adhesive composition of Photoacid generator, replaces third Relative to the tert-butyl group in acrylic block copolymer (1) in olefin(e) acid based block copolymer (1) Speech adds N-hydroxynaphthylimide triflate (NIT) of 0.4mo1% and sends out as photic acid The adhesive composition of raw agent, in addition, carries out operation similarly to Example 1 and makes bonding Agent compositions.For the adhesive composition of gained, carry out operation similarly to Example 1 and make Bonding sheet, is evaluated decomposability.The result of gained is shown in table 1 and Fig. 8.

(embodiment 6)

The acrylic block copolymer (6) obtained by above-mentioned manufacture example 9 is used to replace acrylic acid series Block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent group Compound.For the adhesive composition of gained, carry out operation similarly to Example 1 and make bonding Sheet, is evaluated decomposability.The result of gained is shown in table 2 and Fig. 9.

(embodiment 7)

The acrylic block copolymer (7) obtained by above-mentioned manufacture example 10 is used to replace acrylic acid Based block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent Compositions.For the adhesive composition of gained, carry out operation similarly to Example 1 and make viscous Close sheet, decomposability is evaluated.The result of gained is shown in table 2 and Figure 10.

(embodiment 8)

Use in the acrylic block copolymer (8) obtained by above-mentioned manufacture example 11 relative to third The N-hydroxyl naphthoyl adding 0.3mo1% for the tert-butyl group in olefin(e) acid based block copolymer (8) is sub- Amine triflate (NIT), as the adhesive composition of Photoacid generator, replaces third Relative to the tert-butyl group in acrylic block copolymer (1) in olefin(e) acid based block copolymer (1) Speech adds N-hydroxynaphthylimide triflate (NIT) of 0.4mo1% and sends out as photic acid The adhesive composition of raw agent, in addition, carries out operation similarly to Example 1 and makes bonding Agent compositions.For the adhesive composition of gained, carry out operation similarly to Example 1 and make Bonding sheet, is evaluated decomposability.The result of gained is shown in table 2 and Figure 11.

(embodiment 9)

Use in the acrylic block copolymer (9) obtained by above-mentioned manufacture example 12 relative to The N-hydroxyl naphthoyl of 0.7mo1% is added for the tert-butyl group in acrylic block copolymer (9) Imines triflate (NIT), as the adhesive composition of Photoacid generator, replaces Relative to the tert-butyl group in acrylic block copolymer (1) in acrylic block copolymer (1) For add N-hydroxynaphthylimide triflate (NIT) of 0.4mo1% as photic acid The adhesive composition of propellant, in addition, carries out operation similarly to Example 1 and makes viscous Mixture composite.For the adhesive composition of gained, carry out operation similarly to Example 1 and make Become bonding sheet, decomposability is evaluated.The result of gained is shown in table 2 and Figure 12.

(embodiment 10)

Use in the acrylic block copolymer (10) obtained by above-mentioned manufacture example 13 relative to The N-hydroxyl naphthalene of 2.9mo1% is added for the tert-butyl group in acrylic block copolymer (10) Acid imide triflate (NIT), as the adhesive composition of Photoacid generator, replaces Relative to the tertiary fourth in acrylic block copolymer (1) in acrylic block copolymer (1) N-hydroxynaphthylimide triflate (NIT) of 0.4mo1% is added as photic for base The adhesive composition of acid-producing agent, in addition, carries out operation similarly to Example 1 and makes Adhesive composition.For the adhesive composition of gained, carry out operation similarly to Example 1 and Make bonding sheet, decomposability is evaluated.The result of gained is shown in table 2 and Figure 13.

(embodiment 11)

The acrylic block copolymer (11) obtained by above-mentioned manufacture example 14 is used to replace acrylic acid Based block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent Compositions.For the adhesive composition of gained, carry out operation similarly to Example 1 and make viscous Close sheet, decomposability is evaluated.The result of gained is shown in table 2 and Figure 14.

(embodiment 12)

The acrylic block copolymer (12) obtained by above-mentioned manufacture example 15 is used to replace acrylic acid Based block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent Compositions.For the adhesive composition of gained, carry out operation similarly to Example 1 and make viscous Close sheet, decomposability is evaluated.The result of gained is shown in table 3.

(embodiment 13)

The acrylic block copolymer (13) obtained by above-mentioned manufacture example 16 is used to replace acrylic acid Based block copolymer (1), in addition, carries out operation similarly to Example 1 and makes binding agent Compositions.For the adhesive composition of gained, carry out operation similarly to Example 1 and make viscous Close sheet, decomposability is evaluated.The result of gained is shown in table 3.

<decomposability test 1>

By by embodiment 1～5 and the bonding sheet that obtains of comparative example 1～3 cut into wide 20mm, length The oblong-shaped of 175mm, wide 50mm, long 150mm, thick 0.5mm SUS plate on, In the environment of 23 DEG C of 50%RH, the hand roller making weight be 2kg crimps for reciprocal 1 time, Make 4 same test films.

After making 1 in the test film after crimping to stand 1 hour under 23 DEG C of 50%RH environment, make With Tensile Tester, peel off with the speed of 30mm/ minute, measure 180 ° of peel strengths (just Phase).

After making 1 in the test film after crimping to stand 30 minutes under 23 DEG C of 50%RH environment, Heat 1 hour under 100 DEG C (embodiment 5 is 130 DEG C), then let cool to 23 DEG C (about 30 Minute) (heating).

After making 1 in the test film after crimping to stand 30 minutes under 23 DEG C of 50%RH environment, At room temperature irradiate 1 hour ultraviolet, then stand 30 minutes (UV irradiation).

After making 1 in the test film after crimping to stand 30 minutes under 23 DEG C of 50%RH environment, Irradiate 1 hour ultraviolet, then, heat 1 hour under 100 DEG C (embodiment 5 is 130 DEG C), Let cool to 23 DEG C (about 30 minutes) (UV → heating).

For these test films, use Tensile Tester, peel off with the speed of 30mm/ minute, Measure 180 ° of peel strengths.Table shows the stripping that peel distance is measured when being 30～120mm The meansigma methods of intensity, the numeric representation of display stick-slip is its amplitude.

Use Toshiba Physicochemical with mercury lamp " SHL-100UVQ-2 " it should be noted that ultraviolet irradiates (75W) as light source, the distance of light source Yu sample is set to 10cm, lamp light after through 15 Again sample is irradiated (in below example, comparative example, with identical condition after more than point It is irradiated).

The bonding sheet obtained by embodiment 6～13 is cut into wide 20mm, long 175mm rectangular Shape, wide 50mm, long 150mm, thick 0.5mm SUS plate on, at 23 DEG C of 50%RH In the environment of, the hand roller making weight be 2kg crimps for reciprocal 1 time, make 2 same Test film.

After making 1 in the test film after crimping to stand 1 hour under 23 DEG C of 50%RH environment, make With Tensile Tester, peel off with the speed of 30mm/ minute, measure 180 ° of peel strengths (just Phase).

After making 1 in the test film after crimping to stand 30 minutes under 23 DEG C of 50%RH environment, Irradiate 1 hour ultraviolet, then heat 1 hour at 100 DEG C, let cool to 23 DEG C (about 30 points Clock) (UV → heating).

For these test films, use Tensile Tester, peel off with the speed of 30mm/ minute, Measure 180 ° of peel strengths.The stripping measured when showing peel distance in table by 30～120mm The meansigma methods of intensity, the numeric representation of display stick-slip is its amplitude.

It should be noted that the light source that ultraviolet irradiation is used is identical with above-mentioned light source.

[table 1]

[table 2]

[table 3]

The numeric representation mol ratio of each composition in the acrylic acid series polymeric compounds in table.Additionally, in table Write a Chinese character in simplified form respectively the most as follows.Additionally, (SS) expression there occurs stick-slip in the project of bonding force.

TBA: form the tert-butyl acrylate of polyacrylic acid tert-butyl ester chain

Co-tBA: with the polyacrylic acid of the copolymer composition comprising other of polyacrylic acid tert-butyl ester chain copolymerization The tert-butyl acrylate that chain is comprised

CHA: form the cyclohexyl acrylate of polyacrylic acid cyclohexyl chain

Co-CHA: with the polypropylene of the copolymer composition comprising other of polyacrylic acid cyclohexyl chain copolymerization The cyclohexyl acrylate that acid esters chain is comprised

2EHA: 2-EHA

NBA: n-butyl acrylate

HEA: acrylic acid 2-hydroxy methacrylate

HBA: acrylic acid 4-hydroxybutyl

(embodiment 14)

Use the bonding sheet operated in the same manner as above-described embodiment 4 and make, according to following decomposability Decomposability is evaluated by test 2.The result of gained is shown in table 4 and Figure 15.

(comparative example 4)

Use the bonding sheet operated in the same manner as comparative example 3 and make, test 2 according to following decomposability Decomposability is evaluated.The result of gained is shown in table 4 and Figure 16.

<decomposability test 2>

Bonding sheet is cut into wide 20mm, the oblong-shaped of long 175mm, in wide 50mm, length 150mm, thick 0.5mm SUS plate on, under 23 DEG C of 50% environment, the hands making weight be 2kg Nip drum crimps for reciprocal 1 time.

After making the test film after crimping stand 30 minutes under 23 DEG C of 50% environment, at room temperature irradiate 5 minutes ultraviolet, then, heat 5 minutes at 150 DEG C, let cool to 23 DEG C (about 30 minutes) (short time decomposition).For this test film, use Tensile Tester, with the speed of 30mm/ minute Peel off, measure 180 ° of peel strengths.Table showing, peel distance is 30～120mm times institutes The meansigma methods of the peel strength recorded.

[table 4]

The numeric representation mol ratio of each composition in the acrylic acid series polymeric compounds in table.Writing a Chinese character in simplified form in table Identical with table 1.Additionally, (SS+CF) represents that stick-slip and cohesion destroy mixing in the project of bonding force The situation occurred.

(embodiment 15)

Use and operate made bonding sheet similarly to Example 2, test 3 according to following decomposability Decomposability is evaluated.The result of gained is shown in table 5 and Figure 17.

(embodiment 16)

Use and operate made bonding sheet similarly to Example 4, test 3 according to following decomposability Decomposability is evaluated.The result of gained is shown in table 5 and Figure 18.

(comparative example 5)

Use and operate made bonding sheet in the same manner as comparative example 2, test 3 according to following decomposability Decomposability is evaluated.The result of gained is shown in table 5 and Figure 19.

(comparative example 6)

Use and operate made bonding sheet in the same manner as comparative example 3, test 3 according to following decomposability Decomposability is evaluated.The result of gained is shown in table 5 and Figure 20.

<decomposability test 3>

Bonding sheet is cut into wide 20mm, the oblong-shaped of long 175mm, in wide 50mm, length 150mm, thick 0.5mm SUS plate on, under 23 DEG C of 50% environment, make the hand pressure of weight 2kg Roll reciprocal 1 time to crimp, make test film.

After making the test film after crimping stand 30 minutes under 23 DEG C of 50% environment, add at 100 DEG C Heat 1 hour, lets cool to room temperature.After continuing at room temperature to irradiate 1 hour ultraviolet, at 100 DEG C Heat 1 hour.This test film is let cool to room temperature, after standing 30 minutes, uses Tensile Tester, Peel off with the speed of 30mm/ minute, measure 180 ° of peel strengths.Table shows stripping away from From the meansigma methods for peel strength measured when 30～120mm.

[table 5]

The numeric representation mol ratio of each composition in the acrylic acid series polymeric compounds in table.In table write a Chinese character in simplified form with Table 1 is identical.Additionally, (SS) expression there occurs stick-slip in the project of bonding force.

From above-mentioned table 1～3: employ following acrylic block polymer embodiment 1～ The adhesive composition of the present application of 13 has suitable cementability and decomposability, and is decomposing Time stick-slip also will not occur, wherein, this acrylic block polymer has: by containing carboxyl precursor Polymer chain that (methyl) acrylate monomer of group is formed and contain acrylate monomer and contain The monomer of polarized group is used as the polymer chain of monomer component.Additionally, the list containing polar group The content of body is that the adhesive composition of the embodiment 2,4,5～13 of more than 5 mass % has especially Excellent decomposability, and peeling-off at adhesive phase/substrate interface aptly when decomposing.Separately On the one hand, the adhesive composition of the comparative example 1～3 employing acrylic acid series atactic polymer cannot Obtain good decomposability.Additionally, there is stick-slip when decomposing.

From above-mentioned table 4: employ the embodiment 14 of following acrylic block copolymer Under the decomposition condition of short time, (ultraviolet of 5 minutes irradiates and at 150 DEG C 5 adhesive composition Minute heating) there is suitable decomposability, and stick-slip also will not occur when decomposing, wherein, should Olefin(e) acid based block copolymer has: by (methyl) the acrylate monomer shape containing carboxyl precursor groups The polymer chain become is used as monomer becomes with containing acrylate monomer and the monomer containing polar group The polymer chain divided.On the other hand, the bonding of the comparative example 3 of acrylic acid series atactic polymer is employed Agent compositions occurs cohesion to destroy and stick-slip when the short time decomposes, and 180 ° of peel strengths do not have yet Fully reduce.

From above-mentioned table 5: employ following acrylic block polymer embodiment 15～ The adhesive composition of the present application of 16 has suitable cementability and decomposability, and is decomposing Time stick-slip also will not occur, wherein, this acrylic block polymer has: by containing carboxyl precursor Polymer chain that (methyl) acrylate monomer of group is formed and contain acrylate monomer and contain The monomer of polarized group is used as the polymer chain of monomer component.On the other hand, acrylic acid is employed It it is adhesive composition generation stick-slip when decomposing of the comparative example 5～6 of atactic polymer.

Industrial applicability

According to the easy decomposability adhesive composition of the present invention, acrylic acid series polymeric compounds can not be reduced The adhesion characteristic being had, and utilize the means easily such as heat, light easily to carry out point when decomposing Solve.Specifically, when adhesive tape is peeled off from adherend or is peeled off from base material by adhesive phase, Owing to being not susceptible to stick-slip, therefore it is not susceptible to the breakage of the parts as adherend, cull, decomposes Time operability also become good.Therefore, following purposes can be applicable to being not particularly limited, and Also easy firing equipment, energy-ray irradiation apparatus etc. can be utilized easily to decompose when decomposing, Described purposes includes: be applicable to the OA machinery of recirculation or recycling, IT household appliances, automobile Etc. the parts fixed-purpose of each industrial field, the temporary transient fixed-purpose of parts, represent the mark of product information Sign purposes etc..Especially, even if utilizing adhesive tape that organic EL panel or liquid crystal panel are used Slim image display or there is the transparent conducting glass of transparency conducting layer, panel surface The protection slim glass etc. such as glass be prone to occur the component of crackle to be fixed in the case of, utilize this The adhesive tape of invention, it is also possible to do not make this component decompose with cracking.

Claims (6)

1. an easy decomposability adhesive composition, it is characterised in that be containing acrylic acid series polymeric compounds While, possibly together with acid catalyst or the adhesive composition of acid-producing agent, wherein,

Described acrylic acid series polymeric compounds is for having poly-(methyl) acrylate chains (A) and poly-(methyl) The acrylic block polymer of acrylate chains (B), wherein, described poly-(methyl) acrylic acid Ester chain (A) is formed by (methyl) acrylate monomer (a) containing carboxyl precursor groups, described Poly-(methyl) acrylate chains (B) comprises described (methyl) propylene containing carboxyl precursor groups (methyl) acrylate (b) of the alkyl with carbon number 1～14 beyond acid ester monomer (a) and Monomer (c) containing polar group as monomer component,

Described (methyl) acrylate monomer (a) containing carboxyl precursor groups is former for having secondary carbon (methyl) acrylate that the secondary carbon of the alkyl of son is bonded with (methyl) acryloxy Monomer (a1-1), the tertiary carbon atom of the alkyl with tertiary carbon atom are bonded with (methyl) acryloxy (methyl) acrylate monomer (a1-2) or (methyl) benzyl acrylate monomer.

Easy decomposability adhesive composition the most according to claim 1, wherein, described containing carboxylic (methyl) acrylate monomer (a) of based precursor group for selected from (methyl) tert-butyl acrylate, 2-methyl-2-adamantyl (methyl) acrylate, 2-ethyl-2-adamantyl (methyl) acrylic acid Ester, (methyl) acrylic acid norbornene ester, (methyl) isobornyl acrylate, (methyl) acrylic acid ring At least one in own ester and (methyl) benzyl acrylate.

Easy decomposability adhesive composition the most according to claim 1 and 2, wherein, described in have (methyl) acrylate (b) of the alkyl of carbon number 1～14 is for selected from (methyl) acrylic acid 2-ethyl At least one in own ester and (methyl) n-butyl acrylate.

Easy decomposability adhesive composition the most according to claim 1 and 2, wherein, described propylene Poly-(methyl) acrylate chains (A) and poly-(methyl) acrylate chains (B) in acid based polymer Ratio being 75/25～1/99 by the molar ratio computing represented by (A)/(B).

Easy decomposability adhesive composition the most according to claim 1 and 2, wherein, described contains The content of the monomer (c) of polar group is the whole monomers forming described acrylic block polymer 1～30 mass % in composition.

6. an easy decomposability adhesive tape, it has comprise according to any one of Claims 1 to 5 easy The adhesive phase of decomposability adhesive composition.