CN109306257A - Carbamate bonding agent, adhesive sheet and display - Google Patents

Abstract

The present invention provides a kind of carbamate bonding agent, adhesive sheet and display.Carbamate bonding agent provided by the invention can thick film coating and be capable of forming the good adhesive layer of wet-heat resisting albefaction.Carbamate bonding agent of the invention includes carbamate prepolymer (A), and the carbamate prepolymer (A) is the reaction product of more than one polyalcohol (a-1) in addition to the polyether polyol with more than one EO base in a molecule, more than one the polyether polyol (a-2) in a molecule with more than one EO base and more than one polyisocyanate (b).In one embodiment, carbamate bonding agent of the invention may include carbamate prepolymer (A) and beta-diketone compound (X).

Description

Carbamate bonding agent, adhesive sheet and display

Related divisional application

Present patent application is entitled " the carbamate bonding agent, its manufacturer application No. is 201680004639.4 The divisional application of the application for a patent for invention of method, adhesive sheet and display ", the applying date of original application are on 09 13rd, 2016.

Technical field

The present invention relates to a kind of carbamate bonding agent, adhesive sheet and displays.

Background technique

Liquid crystal display (liquid crystal display, LCD) and display of organic electroluminescence (organic Electroluminescence display, OELD) etc. flat-panel monitors (flat panel display) and will be described The touch-screen display that flat-panel monitor and touch screen (touch pannel) are composed is widely used in TV The electronics such as (television, TV), personal computer (personal computer, PC), mobile phone and portable data assistance are set In standby.

In recent years, the various displays are just promoting slim lightweight.Among described, it can be expected that slim light-weighted OELD Due to that can be attracted attention with low electric power acquisition high brightness.OELD has is laminated with organic luminous layer and organic charge on substrate The stepped construction of one layer of transport layer etc. or more of multiple organic layers.OELD also can be flexible as substrate by using plastic foil Change.

Typically, organic electroluminescent (electroluminescence, EL) element is deposited after prolonged use, hair The tendency of the characteristics such as brightness, luminous efficiency and uniformity of luminance decline.Organic EL element is integrally thin, and is considered due to by oxygen And electrode caused by moisture etc. oxidation and organic matter modification and fever when as driving caused by organic material oxidation Decompose etc. and characteristic decline.In addition, due to the interface generated between constituent element by the difference of the coefficient of thermal expansion of each component Stress etc., and have the worry that interface peel is generated between constituent element.It is such in order to solve the problems, such as, it is positive to study sealant and barrier The improvement of layer etc..For example, positive research and utilization film constitutes sealant and barrier layer etc..

Because of the impact and vibration etc. generated in manufacturing step, and it is cracked in the generations such as the sealant containing film and barrier layer And breakage etc., these are likely to result in the deterioration of organic EL element.It is therefore preferable that being protected and being exempted from for film fragility component The influence for being hit and vibrating etc..All the time, as protect various optical components from scrape injure dust attachment etc. influence Surface protective plate, be widely used in the adhesive sheet that adhesive layer is formed in substrate sheets, but about protecting various optical components to exempt from The performance for the influence for being hit and vibrating etc. is not studied substantially.

In this specification, " adhesive sheet " is the adhesive sheet (removing adhesive sheet again) with releasable.

Disclosing in patent document 1 has one kind to contain acrylic, acrylic polymer, Yi Jigao The acrylic adhesive (technical solution 1) of molecular weight linkers.

As the means for improving impact resistance, in addition to the composition for studying intensively bonding agent, it is also considered that the thick-film of adhesive layer.

In patent document 2, as the bonding agent for capableing of thick film coating, announcement has a kind of acrylic adhesive, it includes Mono-functional amine's formic acid esters acrylic ester oligomer, acrylic ester list with specific weight average molecular weight (Mw) Body and free radical photo-initiation (technical solution 1).

In patent document 3, as the bonding agent for capableing of thick film coating, announcement has a kind of carbamate bonding agent, Comprising modified polyisocyanate and polyalcohol, the modified polyisocyanate be the polyisocyanate for making that there is NCO functional group, with Include more than one terminal active hydrogens functional group and average 6 or more ethylene oxies (ethyleneoxy, EO) in each molecule The polyether compound of unit reacts and the modified polyisocyanate of acquisition, and the polyalcohol includes liquid polycarbonate glycol (skill Art scheme 1).

Disclosing in patent document 4 has a kind of fragile component temporarily fixed adhesive sheet, and it includes the so-called singles of utilization (one-shot) method will be comprising gluing obtained by the hardening of the carbamate bonding agent of polyalcohol and polyfunctional isocyanate compound Connect layer (technical solution 1).

[existing technical literature]

[patent document]

[patent document 1] Japanese Patent Laid-Open 2015-17278 bulletin

[patent document 2] Japanese Patent Laid-Open 2012-144726 bulletin

[patent document 3] Japanese Patent Laid-Open 2013-136731 bulletin

[patent document 4] Japanese Patent Laid-Open 2014-172989 bulletin

Summary of the invention

[problem to be solved by the invention]

It records in patent document 1: the polymer that the acrylic adhesive contains high molecular weight with higher concentration, Even if therefore be film, impact absorbency is also excellent (paragraph 0027).Typically, preferably when adhesive sheet is attached at optics structure When part etc. is attached to body, adhesive layer soaks extension without being involved in air with the interface for being attached to body well.This property Also referred to as " wetability ".For example, checking in the state of being attached with adhesive sheet optical component sometimes.In such feelings Under condition, the air being involved between optical component/adhesive sheet can become the obstacle checked.Typically, acrylic adhesive is compared with amino Wetability is poor for formic acid esters bonding agent, is not suitable for optical applications of deterrent air being involved in etc..

It records in patent document 2: thickness can be made due to curing shrinkage of acrylic adhesive when photopolymerization is few Homogenization can get the good adhesive sheet of appearance (paragraph 0012).However, acrylic adhesive have with it is described same Project.In addition, the acrylic adhesive recorded in patent document 2 is in the photo-hardening of overlay, the light such as ultraviolet light reached Amount slowly reduced from the surface of overlay to inside, thus especially in the overlay of thick film, be easy to produce thickness direction Hardening is uneven.In addition, the inhibition of curing shrinkage is not abundant yet.Therefore, thick film coating is not easy to.

The bonding force for the carbamate bonding agent recorded in patent document 3 is high, is not suitable for removing purposes again.

In patent document 4, about protecting optical component etc. to be attached to body from the performance for the influence impacted and vibrated etc. It does not refer at all, but single method is typically, the surface smoothness of adhesive layer is easy to deteriorate due to curing shrinkage, is not suitable for thickness Membranization.

In addition, typically, when adhesive layer is exposed in hot and humid environment, sometimes by the moisture of external environment Influence and gonorrhoea (also referred to as albefaction), thus deteriorated appearance.Therefore, adhesive layer is preferably that wet-heat resisting albefaction is good.

In addition, typically, adhesive sheet can protect optical component etc. to be attached to the influence that body adheres to from dust, but preferably For the adhesive sheet for various displays etc. its own with antistatic property, dust adhesion is low.

The present invention is winner in view of the situation, its purpose is to provide one kind can thick film coating and be capable of forming resistance to The carbamate bonding agent of the damp and hot good adhesive layer of albefaction and the adhesive sheet for using it.

In addition, the purpose of the present invention is to provide one kind can thick film coating and be capable of forming wet-heat resisting albefaction it is good, Carbamate bonding agent with the low adhesive layer of antistatic property, dust adhesion and the adhesive sheet using it.

[technical means to solve problem]

The inventors of the present invention are artificial to reach the purpose and effort research is repeated, and as a result completes the present invention.

The carbamate bonding agent of 1st embodiment of the invention includes:

Carbamate prepolymer (A), the carbamate prepolymer (A) are more than one except having in a molecule There is more than one second in more than one polyalcohol (a-1), a molecule other than the polyether polyol of ethylene oxy (EO) base More than one the polyether polyol (a-2) of alkene oxygen (EO) base, the reaction product with more than one polyisocyanate (b)；With And

Beta-diketone compound (X).

The carbamate bonding agent of 2nd embodiment of the invention includes:

Carbamate prepolymer (A), the carbamate prepolymer (A) are more than one except having in a molecule There is more than one second in more than one polyalcohol (a-1), a molecule other than the polyether polyol of ethylene oxy (EO) base More than one the polyether polyol (a-2) of alkene oxygen (EO) base, the reaction product with more than one polyisocyanate (b)；With And

Aliphatic ester (B).

The carbamate bonding agent of 1st embodiment is preferably,

Using the one kind that will make in addition to the polyether polyol in a molecule with more than one ethylene oxy (EO) base With more than one the polyether polyol (a- of more than one ethylene oxy (EO) base in above polyalcohol (a-1), a molecule 2) carbamate prepolymer (A) for, reacting and obtaining with more than one polyisocyanate (b), and

The manufacturing method that beta-diketone compound (X) blends manufactures.

Adhesive sheet of the invention includes the bonding agent containing the 1st embodiment or the 2nd embodiment of the invention The adhesive layer of hardening thing.

Display of the invention includes the bonding agent containing the 1st embodiment or the 2nd embodiment of the invention The adhesive layer of hardening thing.

In this specification, " ethyleneoxy (ethyleneoxy group) " is by chemical formula "-CH₂CH₂Represented by O- " Base is slightly denoted as " EO yl " sometimes.Similarly, have by the ethylene oxide (ethylene oxide) that ring-opening reaction forms EO base When be slightly denoted as " EO ".

Typically, tablet is referred to as " band ", " film " or " piece " according to thickness and width.In this specification, not These are distinguished especially, is set as using " piece " this term as the term for indicating the concept including these.

In this specification, as long as not indicating especially, various physical property are set as the method recorded in utilization " embodiment " one Measurement person.

[The effect of invention]

According to the present invention, it is possible to provide thick film coating and the amino of the good adhesive layer of wet-heat resisting albefaction can be capable of forming Formic acid esters bonding agent and the adhesive sheet for using it.

Bonding agent comprising carbamate prepolymer (A) Yu the 1st embodiment of the invention of beta-diketone compound (X) Can thick film coating and can be formed wet-heat resisting albefaction it is good, with the low adhesive layer of antistatic property, dust adhesion.

Detailed description of the invention

Fig. 1 is the constructed profile of the adhesive sheet of the 1st embodiment of the invention.

Fig. 2 is the constructed profile of the adhesive sheet of the 2nd embodiment of the invention.

[explanation of symbol]

10,20: adhesive sheet

11,21: substrate sheets

12,22A, 22B: adhesive layer

13,23A, 23B: stripping film

Specific embodiment

" carbamate bonding agent "

Carbamate bonding agent of the invention includes more than one specific carbamate prepolymer (A).

The carbamate bonding agent of 1st embodiment of the invention includes that more than one specific carbamate is pre- The beta-diketone compound (X) of polymers (A) and more than one.

The carbamate bonding agent of 2nd embodiment of the invention includes that more than one specific carbamate is pre- The aliphatic ester (B) of polymers (A) and more than one.

(carbamate prepolymer (A))

Carbamate prepolymer (A) is to be copolymerized a variety of polyalcohols (a) and more than one polyisocyanate (b) The reaction product of reaction and acquisition.Carbamate prepolymer (A) is comprising from a variety of polyalcohols (a) and more than one is poly- The copolymer of the various of monomer unit of isocyanates (b).

In the present invention, a variety of polyalcohols (a) are except the polyethers in a molecule with more than one ethylene oxy (EO) base is more More than one polyalcohol (a-1) other than first alcohol, in a molecule with more than one ethylene oxy (EO) base it is a kind of with On polyether polyol (a-2) combination.

< polyalcohol (a-1) >

Polyalcohol (a-1) is in addition to the polyether polyol in a molecule with more than one EO base, arbitrary more First alcohol.As polyalcohol (a-1), can enumerate polyacrylic polyols, polyester polyol, the polyether polyol without EO base, Polycaprolactone polyol, polycarbonate polyol and castor oil system polyalcohol etc..Wherein, preferably polyester polyol, do not have There are polyether polyol, polycaprolactone polyol and the polycarbonate polyol of EO base, more preferable polyester polyol and does not have There is the polyether polyol of EO base.

Polyester polyol is the polyalcohol with polyester construction.The polyalcohol be more than one sour component and it is a kind of with On polyol component condensation polymer, can by more than one sour component and more than one polyol component esterification And it obtains.

It as the sour component of raw material, can enumerate: succinic acid, adipic acid, azelaic acid, decanedioic acid, terephthalic acid (TPA), adjacent benzene two The polycarboxylic acids such as formic anhydride, M-phthalic acid and trimellitic acid.

As the polyol component of raw material, can enumerate: ethylene glycol, propylene glycol, butanediol, diethylene glycol, 1,4-butanediol, Neopentyl glycol, 1,6-HD, 3- methyl-1,5- pentanediol, 3,3'- dihydroxymethyl heptane, butyl ethyl pentanediol, polyoxy second There are two 2 function polyalcohols (also referred to as glycol (glycol) or the dihydric alcohols of hydroxyl for the tool such as glycol and polyoxypropylene glycol (diol))；There are three polyalcohols etc. more than 3 functions of the above hydroxyl for the tool such as glycerol, trimethylolpropane and pentaerythrite.

Typically, polyether polyol is the polyalcohol with polyether structure, and is one with more than two reactive hydrogens Kind or more active hydrogen-contg compound and more than one cyclic ether ring-opening polymerization polymer.

Polyether polyol as polyalcohol (a-1) does not have EO base.In polyether polyol without EO base, it can be used Cyclic ether of the cyclic ether as raw material of EO base is not formed.

As the compound containing reactive hydrogen, compound, amine and the change with hydroxyl and NH base with hydroxyl can be enumerated Close object etc..

As the compound with hydroxyl, can enumerate water and glycol (also referred to as dihydric alcohol) (specifically, propylene glycol, 1,4- butanediol, neopentyl glycol and butyl ethyl pentanediol etc.) etc. tool there are two hydroxyl 2 function polyalcohols；Glycerol, three There are three polyalcohols etc. more than 3 functions of the above hydroxyl for the tool such as hydroxymethyl-propane and pentaerythrite.

As amine, polyamines such as ethylenediamine, isophorone diamine and dimethylphenylene diamine etc. can be enumerated.

As the compound with hydroxyl and NH base, N- amino ethyl ethanolamine etc. can be enumerated.

As the cyclic ether for not forming EO base, propylene oxide and epoxy butane etc. can be enumerated in addition to ethylene oxide (EO) Oxyalkylene (alkylene oxide, AO)；Tetrahydrofuran etc..

(wherein, as the polyether polyol for not having EO base, the preferably oxyalkylene addition compound of the compound containing reactive hydrogen Except EO adduct) (also referred to as polyoxy sub alkyl polylol).Specifically, polypropylene glycol (polypropylene can be enumerated Glycol, PPG) and the poly- alkane glycol of 2 functions such as polytetramethylene glycol；It is more than 3 function such as oxyalkylene addition compound of glycerol poly- Ethoxylated polyhydric alcohol etc..

Polycaprolactone polyol is the polyalcohol with polyester construction, and be 6-caprolactone and σ-valerolactone etc. more than one Cyclic ester ring-opening polymerization polymer.The polyalcohol can be obtained by the ring-opening polymerisation of more than one cyclic ester.

Polycarbonate polyol is the polyalcohol with structural carbonate.The polyalcohol can pass through polyalcohol and phosgene (phosgene) polycondensation of the bischloroformates (bischloroformate) of polycondensation, polyalcohol and dioxy compound, polynary Polycondensation of double manganese ester of the polycondensation of alcohol and carbonic diester and polyalcohol and dioxy compound etc. and obtain.

Polyalcohol (a-1) other than polyether polyol can also have EO base, no matter the type of polyalcohol (a-1), more First alcohol (a-1) is preferably the polyalcohol without EO base.That is, polyalcohol (a-1) is preferably selected from by not having the poly- of EO base Ester polyol, the polyether polyol without EO base, the polycaprolactone polyol without EO base and gathering without EO base At least one of group polyalcohol composed by carbonate polyol.Wherein, do not have the polyester polyol of EO base more preferably And the polyether polyol without EO base.

There is no particular restriction for the number average molecular weight (Mn) of polyalcohol (a-1), and preferred range is as follows.

The Mn of polyester polyol is preferably 500~5,000, more preferable 1,000~4,000, and particularly preferably 1,000~3,000.

The Mn of polyether polyol without EO base is preferably 500~5,000, more preferable 1,000~4,000.

The Mn of polycaprolactone polyol is preferably 500~5,000, more preferable 1,000~4,000, and particularly preferably 1,000~3, 000。

The Mn of polycarbonate polyol is preferably 500~5,000, more preferable 1,000~4,000, and particularly preferably 1,000~3, 000。

It is lower limit or more by Mn, the gelation of carbamate prepolymer (A) obtains effectively about each polyalcohol Inhibit, by for the upper limit hereinafter, the cohesiveness of carbamate prepolymer (A) is suitable.

< polyether polyol (a-2) >

As, with the polyether polyol (a-2) of more than one EO base, can enumerate makes comprising ethylene oxide in a molecule (EO) compound (addition polymerization that more than one cyclic ether is obtained with the compound progress addition polymerization containing reactive hydrogen Object).The illustration of cyclic ether other than compound and ethylene oxide (EO) containing reactive hydrogen is identical as polyalcohol (a-1).

As, with 2 functional polyethers polyalcohols of more than one EO base, can enumerate makes comprising ethylene oxide in a molecule (EO) more than one oxyalkylene (AO) and tool is obtained there are two the compound addition polymerization containing reactive hydrogen of reactive hydrogen Poly- alkane glycol.As the poly- alkane glycol, polyethylene glycol (polyethylene glycol, PEG) etc. can be enumerated.

As polyether polyol more than 3 functions in a molecule with more than one EO base, can enumerate makes comprising oxygen There are three the compound additions containing reactive hydrogen of the above reactive hydrogen to gather for more than one the oxyalkylene (AO) and tool for changing ethylene (EO) The compound (addition polymer) for closing and obtaining.As polyethers more than 3 functions in a molecule with more than one EO base Polyalcohol can enumerate the glycerol EO adduct for obtaining more than one ethylene oxide (EO) with glycerol addition polymerization, make one A above propylene oxide (PO) and more than one ethylene oxide (EO) with this sequentially with glycerol addition polymerization and obtain sweet Oily POEO adduct (also referred to as " glycerol polypropylene glycol end is glycol-modified ") etc..

The number average molecular weight (Mn) of polyether polyol (a-2) in one molecule with more than one EO base has no spy It does not limit, preferably 500~5,000, more preferable 1,000~5,000, particularly preferably 1,500~5,000.By Mn be 500 with On, the gelation of carbamate prepolymer (A) is effectively suppressed.It is 5,000 hereinafter, carbamate prepolymer by Mn (A) cohesiveness is suitable.

The carbamate pre-polymerization obtained using the polyether polyol (a-2) in a molecule with more than one EO base Object (A) is easier to harden.Therefore, by adhesive applicating of the invention, after in substrate sheets, overlay hardens quickly, Thus thick film coating is easy.Even if in addition, carrying out thick film coating, overlay also hardens quickly, thus relative to overlay For mechanical stress being subject to when the winding of adhesive sheet obtained after hot wind or heat drying when heat drying etc., coating Layer and adhesive layer are not easily susceptible to influence.Therefore, roller line and skew etc. are bad is inhibited, and it is good viscous can to form surface smoothness Connect layer.Because adhesive layer thick-film can be made, and can form excellent impact resistance, protect various optical components etc. to be attached to body from punching The excellent adhesive layer of the function for the influence hit and vibrated etc..

In addition, typically, when adhesive layer is exposed under hot and humid environment, gonorrhoea (albefaction) sometimes.EO base For hydrophily base.By utilizing the ammonia obtained using the polyether polyol (a-2) in a molecule with more than one EO base The hydrophily of carbamate prepolymer (A), adhesive layer improves, and can inhibit damp and hot albefaction.It is improved by the hydrophily of adhesive layer Easily cause the transfer of the moisture between adhesive layer and external environment, it is believed that even if moisture also holds from external intrusion adhesive layer The discharge for easily causing moisture self bonding layer external environment, can maintain relatively low by the amount of moisture in adhesive layer.

In addition, the carbamic acid obtained using the polyether polyol (a-2) in a molecule with more than one EO base Ester prepolymer (A) slightly has electric conductivity, thus can realize that sheet resistance value is lower and slightly has an antistatic property using its adhesive layer.But It is that for the opinion of the present inventor et al., carbamate prepolymer (A) individually does not show that bonding can be effectively inhibited The antistatic property of the degree of the dust attachment of layer.And with carbamate prepolymer (A) and the case where beta-diketone compound (X) Under, the sheet resistance value of adhesive layer is effectively reduced and effectively shows antistatic property, can effectively inhibit removing adhesive layer The dust on the surface for being attached to body afterwards adheres to.

As polyalcohol (a-1), can be used tool there are two 2 function polyalcohols of hydroxyl, with tool there are three the above hydroxyl 3 Any one of more than function polyalcohol.These can also be used in combination.

Similarly, as polyalcohol (a-2), it can be used tool there are two 2 function polyalcohols of hydroxyl, with tool there are three more than Any one of more than 3 functions of hydroxyl polyalcohol.These can also be used in combination.

Typically, 2 function polyalcohols have two-dimentional bridging property, and the flexibility of appropriateness can be assigned to adhesive layer.3 functions with On polyalcohol have three-dimensional cross-linked property, can to adhesive layer assign appropriateness hardness.

The hydroxyl value of the hydroxyl value and more than one polyalcohol (a-2) of more than one polyalcohol (a-1) can be passed through Selection, to adjust the characteristics such as bonding force, cohesiveness and the releasable of carbamate bonding agent of the invention.From being easy to have both For bonding force and releasable, at least one of preferably a variety of polyalcohols (a) are the polyalcohol of 3 functions or more.

The mass ratio of more than one polyether polyol (a-1) and more than one polyether polyol (a-2) has no especially Limitation.The total amount of more than one polyalcohol (a-1) and more than one polyether polyol (a-2) is set as 100 mass parts. The amount of more than one polyether polyol (a-1) is preferably greater than 0 mass parts and for 50 below the mass, more preferable 20 mass parts ~50 mass parts.The amount of more than one polyether polyol (a-2) is preferably 50 mass parts more than and less than 100 mass parts, more It is preferred that 50 mass parts~80 mass parts.Amount by more than one polyether polyol (a-2) is 50 mass parts or more, can be effective Ground shows wet-heat resisting albefaction and antistatic property.It is greater than 0 mass parts by the amount of more than one polyalcohol (a-1), can has Show to effect the function and effect of thick film screening characteristics.

< polyisocyanate (b) >

As polyisocyanate (b), aromatic poly-isocyanate, aliphatic polymeric isocyanate and alicyclic can be enumerated Polyisocyanate etc..

It as aromatic poly-isocyanate, can enumerate: 1,3- phenylene vulcabond, 4,4'- diphenyl diisocyanate Ester, 1,4- phenylene vulcabond, 4,4'- methyl diphenylene diisocyanate, 2,4 toluene diisocyanate, 2,6- toluene Diisocyanate, 4,4'- toluidine diisocyanate, 2,4,6- triisocyanate toluene, 1,3,5- triisocyanate benzene, the United Nations General Assembly Anisidine diisocyanate, 4,4'- diphenyl ether diisocyanate, 4,4', 4 "-triphenylmethane triisocyanates, ω, ω '- Diisocyanate -1,3- dimethyl benzene, ω, ω '-diisocyanate -1,4- dimethyl benzene, ω, ω '-diisocyanate -1,4- Diethylbenzene, 1,4- tetramethylxylene diisocyanate and 1,3- tetramethylxylene diisocyanate etc..

It as aliphatic polymeric isocyanate, can enumerate: trimethylene diisocyanate, tetramethylene diisocyanate, six Methylene diisocyanate, pentamethylene diisocyanate, 1,2- trimethylene diisocyanate, 2,3- butylidene diisocyanate Ester, 1,3- tetramethylene diisocyanate, ten dimethylene diisocyanates and 2,4,4- tri-methyl hexamethylene diisocyanate Ester etc..

It as alicyclic polymeric isocyanate, can enumerate: 3- isocyanatomethyl -3,5,5- trimethylcyclohexyl isocyanic acid Ester, 1,3- pentamethylene diisocyanate, 1,3- cyclohexane diisocyanate, 1,4- cyclohexane diisocyanate, methyl -2,4- ring Hexane diisocyanate, methyl -2,6- cyclohexane diisocyanate, 4,4' methylene bis (cyclohexyl isocyanate) and 1, Bis- (isocyanatomethyl) hexamethylenes of 4- etc..

In addition to this, as polyisocyanate (b), the trimethylolpropane adduct of the polyisocyanate can be enumerated Body, biuret (biuret) body and tripolymer (this tripolymer includes isocyanurate ring) etc..

As polyisocyanate (b), preferably aliphatic polymeric isocyanate and alicyclic polymeric isocyanate, more preferably fat Adoption isocyanates.

In the polymerization of carbamate prepolymer (A), preferably make a variety of polyalcohols (a) (specifically, more than one The combination of polyalcohol (a-1) and more than one polyether polyol (a-2)), with more than one polyisocyanate (b), with more Isocyanates (NCO) base in the molal quantity of hydroxyl (OH) in kind polyalcohol (a) and more than one polyisocyanate (b) Functional group's ratio (NCO/OH ratio) of molal quantity reacted as 0.5~0.9 ratio.

< catalyst >

More than one catalyst optionally can be used in the polymerization of carbamate prepolymer (A).It, can as catalyst Using known person, three-level amine compound and organic metal based compound etc. can be enumerated.

As three-level amine compound, triethylamine, triethylenediamine and 1,8- diazabicyclo (5,4,0)-ten can be enumerated One carbene -7 (1,8-Diazabicyclo [5.4.0]-undecene-7, DBU) etc..

As organic metal based compound, tin based compound and non-tin based compound etc. can be enumerated.

It as tin based compound, can enumerate: dibutyl tin dichloride, Dibutyltin oxide, dibutyl tin bibromide, two fourths Two maleic acid tin of base (dibutyltin dimaleate), dibutyl tin dilaurate (dibutyltin dilaurate, DBTDL), dioctyl tin cinnamic acid tin, dibutyl tin acetate, dibutyltin sulfide, tributyl artificial gold, tributyl oxidation Tin, tributyltin acetate, triethyl group ethyoxyl tin (triethyltin ethoxide), tributyl ethyoxyl tin (tributyltin ethoxide), dioctyl tin oxide, tributyltin chloride, tributyl trichloroacetic acid tin and 2- ethyl Caproic acid tin etc..

It as non-tin based compound, can enumerate: dibutyl titanium chloride, butyl titanate and butoxy titanium trichloride Equal titanium sub-group compounds；The lead based compounds such as plumbi oleas, 2 ethyl hexanoic acid lead, lead benzoate and lead naphthenate；2 ethyl hexanoic acid The iron series compounds such as iron and ferric acetyl acetonade；The cobalts based compound such as cobalt benzoate and 2 ethyl hexanoic acid cobalt；Zinc naphthenate and 2- second The zinc based compounds such as base caproic acid zinc；Other metal based compounds such as zirconium naphthenate and bismuth carboxylate etc..

In the case where the reactivity of a variety of polyalcohols (a) is respectively different, because of reactive difference, in single catalyst system In have the worry of the gonorrhoea for being easy to produce gelation or reaction solution.In the situation, by using two or more catalyst, And it is easy to control reaction (such as reaction speed etc.), described problem can be solved, the selection freedom degree of polyalcohol (a) also increases.That is, Two or more catalyst is preferably used in the present invention.

As the combination of two or more catalyst, there is no particular restriction, can enumerate tertiary amine/organic metal system, tin system/ Non- tin system and tin system/tin system etc..Preferably tin system/tin system, more preferable dibutyl tin dilaurate/2 ethyl hexanoic acid tin.

There is no particular restriction for 2 ethyl hexanoic acid tin/dibutyl tin dilaurate mass ratio, and preferably greater than 0 and less than 1, More preferable 0.2~0.6.If the mass ratio, less than 1, the balance of catalyst activity is good, gelation can be effectively inhibited.

There is no particular restriction for the usage amount of more than one catalyst, relative to a variety of polyalcohols (a) and more than one The total amount of polyisocyanate (b), preferably 0.01 mass of mass %~1 %.

< solvent >

More than one solvent optionally can be used in the polymerization of carbamate prepolymer (A).As solvent, can be used Known person can enumerate: the ketone such as acetone and methyl ethyl ketone；The esters such as ethyl acetate；Aromatic hydrocarbons such as toluene and dimethylbenzene etc..From ammonia For boiling point of the dissolubility of carbamate prepolymer (A) and solvent etc., preferably ethyl acetate and toluene etc..

< polymerization >

As the polymerization of carbamate prepolymer (A), there is no particular restriction, can be using blocky polymerization and solution Polymerization known in polymerization etc..

There is no particular restriction for polymerization sequence, can enumerate:

Sequentially 1) by a variety of polyalcohols (a), more than one polyisocyanate (b), optionally more than one catalysis Agent and after optionally more than one solvent mixes together, the sequence for reacting it；

Sequentially 2) by a variety of polyalcohols (a), optionally more than one catalyst and optionally more than one solvent Mixing, in the sequence for wherein reacting while adding more than one polyisocyanate (b) it.

From for being easy to control reaction, preferably sequentially 2).

The reaction temperature in the case where catalyst is used to be preferably less than 100 DEG C, more preferable 85 DEG C~95 DEG C.If reaction temperature Degree is less than 100 DEG C, then the control of reaction speed and cross-linked structure etc. is easy, and is easy to generate the amino with desired molecular weight Urethane prepolymer (A).

In the case where not using catalyst, reaction temperature is preferably 100 DEG C or more, and more preferable 110 DEG C or more, when reaction Between preferably 3 hours or more.

For the screening characteristics of self bonding agent is good, the weight average molecular weight (Mw) of carbamate prepolymer (A) is preferred It is 30,000~500,000, more preferable 50,000~400,000, molecular weight distribution (Mw/Mn) is preferably 4~12, and more preferable 6~10.

(beta-diketone compound (X))

Bonding agent of the invention may include more than one beta-diketone compound (X) in the 1st embodiment.

As beta-diketone compound (X), there is no particular restriction, can enumerate: 2,4- pentanediones, 3- methyl -2,4- pentanedione, 2,4- acetyl butyryl, 1,3- cyclohexanedione, 2,2- dimethyl -3,5- acetyl butyryl, 2,4- heptadione, 3,5- heptadione, 2,2,6, 6- tetramethyl -3,5- heptadione, 1,3- cycloheptane diketone, 2,4- acetyl caproyl, 2,2,7- trimethyl -3,5- acetyl caproyl, 2,4- nonyl Diketone, 3- methyl -2,4- nonyl diketone, 2- methyl -4,6- nonyl diketone, 1- phenyl -1,3- diacetyl and spiral shell decane diketone etc.. Wherein, preferably 2,4- pentanedione and 2,2- dimethyl -3,5- acetyl butyryl etc..

Beta-diketone compound (X) is easily formed enol shape in ketone-enol tautomers, thus has dielectric split pole Property, slightly has electric conductivity therefrom.Therefore, the adhesive layer comprising the compound can realize sheet resistance value it is lower and slightly tool resist it is quiet Electrically.But for the opinion of the present inventor et al., beta-diketone compound (X) individually does not show to effectively inhibit The antistatic property of the degree of the dust attachment of adhesive layer.By and with the carbamate prepolymer with more than one EO base (A) it is effectively reduced and is effectively shown antistatic property, can be had with beta-diketone compound (X), the sheet resistance value of adhesive layer Effect ground inhibits the dust attachment of adhesive layer.

Relative to more than one 100 mass parts of carbamate prepolymer (A), more than one beta-diketone compound (X) additive amount is preferably 0.01 mass parts~10 mass parts, more preferable 0.05 mass parts~10 mass parts, particularly preferably 0.1 matter Measure part~5 mass parts, most preferably 0.5 mass parts~5 mass parts.If additive amount is 0.01 mass parts or more, can effective earth's surface Reveal the inhibitory effect of the dust attachment of adhesive layer.If below the mass for 10, can be sufficiently ensured must as script for additive amount The amount of the carbamate prepolymer (A) of the principle active component of the bonding agent needed, it can be ensured that the required property as bonding agent Energy.

(aliphatic ester (B))

Bonding agent of the invention may include more than one aliphatic ester (B) in the 2nd embodiment.Aliphatic ester (B) It works as plasticiser, the wetability of adhesive layer can be improved.In addition, aliphatic ester (B) improves adhesive layer, especially adhesive layer The hydrophobicity of the surface section that is attached to side such as optical component can press down when adhesive sheet to be exposed under hot and humid environment Moisture processed invades adhesive layer from external environment, to inhibit the gonorrhoea (albefaction) of adhesive layer.

As aliphatic ester (B), there is no particular restriction, preferably by the monoacid or polyacid and carbon of carbon number 8~18 The reaction of the branch's alcohol below of number 18 and the ester obtained；Unsaturated fatty acid and hydroxyl value by carbon number 14~18 are 4 or less Alcohol reaction and the ester etc. that obtains.

As by carbon number 8~18 monoacid or reacting for polyacid and the branch's alcohol below of carbon number 18 obtain Ester can enumerate lauric acid iso stearyl ester, isopropyl myristate, the different cetyl of myristic acid, myristic acid octyldodecyl Base ester, palmitinic acid iso stearyl ester, Standamul 7061, octyldodecyl oleate, two iso stearyl ester of adipic acid, the last of the ten Heavenly stems The different cetyl of diacid two, three oleyl ester of trimellitic acid and the different cetyl of trimellitic acid three etc..Wherein, preferably meat The different cetyl of isopropyl myristate, myristic acid and myristic acid octyldodecyl, particularly preferably myristic acid isopropyl Ester.

It as the unsaturated fatty acid of carbon number 14~18, can enumerate: nutmeg oleic acid, oleic acid, linolenic acid, secondary linseed oil Sour, different palmitinic acid and isostearic acid etc..It is 4 alcohol below as hydroxyl value, can enumerates: ethylene glycol, propylene glycol, glycerol, three Hydroxymethyl-propane, pentaerythrite and sorbitan etc..

There is no particular restriction for the number average molecular weight (Mn) of aliphatic ester (B), from for the viewpoints such as wetting speed raising, Preferably 200 or more, and preferably 600 or less.

There is no particular restriction for the additive amount of more than one aliphatic ester (B), relative to more than one carbamate 100 mass parts of prepolymer (A), preferably 5 mass parts~50 mass parts, more preferable 20 mass parts~40 mass parts.If additive amount More than 5 mass parts, then the additive effect (wetability improvement effect) of aliphatic ester (B) can be effectively shown.If additive amount Below the mass for 50, then it can be sufficiently ensured the carbamate pre-polymerization as the principle active component of bonding agent necessary to script The amount of object (A), it can be ensured that the required performance as bonding agent.

Carbamate bonding agent of the invention can also be composed the 1st embodiment and the 2nd embodiment the 3 Embodiment.That is, carbamate bonding agent of the invention can also be to include carbamate prepolymer (A), beta-diketon Close the 3rd embodiment of object (X) and aliphatic ester (B).

(isocyanate hardener (I))

Bonding agent of the invention optionally may include more than one isocyanate hardener (I).It is glued comprising of the invention The overlay for connecing agent is that carbamate prepolymer (A) is made to harden and eventually become cured film using isocyanate hardener (I).

As isocyanate hardener (I), known person can be used, the original as carbamate prepolymer (A) can be used The compound illustrated in the polyisocyanate (b) of material is (specifically, aromatic poly-isocyanate, aliphatic polymeric isocyanate, virtue Fragrant aliphatic polymeric isocyanate, alicyclic polymeric isocyanate and these trimethylolpropane adduct body/biuret body/ Tripolymer).

The content of the isocyanate hardener (I) of one or more of carbamate bonding agent of the invention has no especially Limitation, relative to more than one 100 mass parts of carbamate prepolymer (A), preferably 3 mass parts~30 mass parts, more It is preferred that 10 mass parts~20 mass parts.If content is 3 mass parts or more, the cohesiveness of adhesive layer is good, if content is 30 matter Part is measured hereinafter, then the bonding force of adhesive layer is good.

(hardening accelerator)

Bonding agent of the invention optionally may include more than one hardening accelerator.As hardening accelerator, can be used Known person can enumerate the catalyst etc. enumerated in the synthesis of carbamate prepolymer (A).

There is no particular restriction for the additive amount of more than one hardening accelerator, from effective hardenability promote viewpoint and Speech, relative to 100 mass parts of carbamate prepolymer (A), preferably 0.0005 mass parts~0.5 mass parts, more preferably 0.001 mass parts~0.1 mass parts, particularly preferably 0.003 mass parts~0.05 mass parts, most preferably 0.005 mass parts~0.03 Mass parts.

(solvent)

Bonding agent of the invention optionally may include more than one solvent.As solvent, known person can be used, can enumerate Acetone, methyl ethyl ketone, ethyl acetate, toluene and dimethylbenzene etc..From the dissolubility of carbamate prepolymer (A) and molten For the viewpoints such as the boiling point of agent, particularly preferably ethyl acetate and toluene etc..

(any other ingredient)

Bonding agent of the invention optionally may include more than one other in the range of lossless effect of the invention Meaning ingredient.It as any other ingredient, can enumerate: arbitrary resin, hardening delay other than carbamate prepolymer (A) Agent, filler, metal powder, colorant, foil-like object, softening agent, conductive agent, antioxidant, ultraviolet absorbing agent, light stabilizer, Surface lubricant, levelling agent, anticorrosive, heat-resisting stabilizing agent, polymerization inhibitor, defoaming agent and lubricant etc..

< fills material >

As filling material, talcum, calcium carbonate and titanium oxide etc. can be enumerated.

< antioxidant >

As antioxidant, free radical chain inhibitor (secondary antioxidant) can be enumerated and peroxide decomposer is (secondary Antioxidant) etc..As free radical chain inhibitor (secondary antioxidant), phenolic antioxidant and amine antioxidant can be enumerated Deng.As peroxide decomposer (secondary antioxidant), sulfur antioxidant and phosphorous antioxidant etc. can be enumerated.

As phenolic antioxidant, single phenol system, bis-phenol system and polymer electrolyte phenolic antioxidant etc. can be enumerated.As Single phenolic antioxidant can be enumerated: 2,6- di-t-butyl-paracresol, butylated hydroxyanisol, 2,6- di-t-butyl -4- Ethyl -phenol and β-(3,5- di-t-butyl -4- hydroxy phenyl) propionic acid stearyl ester etc..

As double phenolic antioxidants, can enumerate: 2,2'- di-2-ethylhexylphosphine oxides (4- methyl-6-tert-butylphenol), 2,2'- are sub- Methyl bis- (4- ethyl -6- tert-butyl phenols), 4,4'- thiobis (3 methy 6 tert butyl phenol), 4,4' butylidene biss (3- Methyl-6-tert-butylphenol) and the bis- [1,1- dimethyl -2- [β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) third of 3,9- Acyloxy] ethyl] 2,4,8,10- tetra- oxaspiro [5,5] hendecane etc..

It as polymer electrolyte phenolic antioxidant, can enumerate: 1,1,3- tri- (2- methyl -4- hydroxyl -5- tert-butyl-phenyl) Butane, 1,3,5- trimethyl -2,4,6- three (3,5- di-t-butyl -4- hydroxybenzyl) benzene, four-[methylene -3- (3', 5'- Di-t-butyl -4'- hydroxy phenyl) propionic ester] methane, bis- [3,3'- bis--(4'- hydroxyl -3'- tert-butyl-phenyl) butyric acid] second two Alcohol ester and 1,3,5- tri- (3', 5'- di-t-butyl -4'- hydroxybenzyl)-S- triazine -2,4,6- (1H, 3H, 5H) triketone, life Educate phenol etc..For example, for the good aspect of compatibility with carbamate prepolymer (A), easy fine jade Northey (IRGANOX) L 135 (manufactures of BASF (BASF) company) are preferred.

It as sulfur antioxidant, can enumerate: 3,3'- thiodipropionate dilauryls, 3,3'- thio-2 acid two- Tetradecane base ester and 3,3'- thio-2 acid distearyl base ester etc..

It as phosphorous antioxidant, can enumerate: triphenyl, diphenylisodecyl base ester and phosphorous Sour phenyl diiso decyl ester etc..

" manufacturing method of carbamate bonding agent "

Carbamate bonding agent of the invention can be manufactured using known method.

The carbamate bonding agent of 1st embodiment is preferably using general

Make more than one the polyalcohol in addition to the polyether polyol in a molecule with more than one ethyleneoxy (a-1), in a molecule with more than one ethyleneoxy more than one polyether polyol (a-2), with more than one The carbamate prepolymer (A) of polyisocyanate (b) reaction and acquisition, and

The manufacturing method that beta-diketone compound (X) blends manufactures.

The carbamate bonding agent of 2nd embodiment is preferably using general

Make more than one the polyalcohol in addition to the polyether polyol in a molecule with more than one ethyleneoxy (a-1), in a molecule with more than one ethyleneoxy more than one polyether polyol (a-2), with more than one The carbamate prepolymer (A) of polyisocyanate (b) reaction and acquisition, and

The manufacturing method that aliphatic ester (B) blends manufactures.

" adhesive sheet "

Adhesive sheet of the invention includes the adhesive layer of the hardening thing containing the bonding agent of the invention.Bonding of the invention Piece is preferably the adhesive layer for including substrate sheets and the hardening thing containing the bonding agent of the invention.Adhesive layer can be formed in The one or two sides of substrate sheets.The exposed surface of adhesive layer is optionally coated using stripping film (also referred to as release liner).Again Person removes stripping film when being attached at adhesive sheet and being attached to body.

Fig. 1 shows the constructed profiles of the adhesive sheet of the 1st embodiment of the invention.In Fig. 1, symbol 10 is adhesive sheet, Symbol 11 is substrate sheets, and symbol 12 is adhesive layer, and symbol 13 is stripping film.Adhesive sheet 10 is formed with viscous for the single side in substrate sheets Connect the single side adhesive sheet of layer.

Fig. 2 indicates the constructed profile of the adhesive sheet of the 2nd embodiment of the invention.In Fig. 2, symbol 20 is adhesive sheet, Symbol 21 is substrate sheets, and symbol 22A, 22B are adhesive layer, and symbol 23A, 23B are stripping film.

As substrate sheets, there is no particular restriction, can enumerate resin sheet, paper and metal foil etc..Substrate sheets can also be at this At least one surface layer of a little substrate sheets is laminated with the laminates of layer of any one or more.For the formation adhesive layer of substrate sheets The face of side, it is optionally also implementable to have Corona discharge Treatment and anchor coating agent (anchor coating agent) coating etc. easy to stick Attached processing.

As the composition resin of resin sheet, there is no particular restriction, can enumerate: polyethylene terephthalate Esters system resins such as (polyethylene terephthalate, PET)；Polyethylene (polyethylene, PE) and polypropylene Olefin-based resins such as (polypropylene, PP)；The vinylites such as polyvinyl chloride；The amides such as nylon66 fiber system resin；Amino first Acid esters system resin (including foaming body)；These combination etc..

There is no particular restriction for the thickness of resin sheet in addition to polyurethanes (polyurethane) piece, and preferably 15 μm~300 μm.There is no particular restriction for the thickness of polyurethane sheet (including foaming body), and preferably 20 μm~50,000 μm.

As paper, there is no particular restriction, can enumerate plain paper, coating paper and art paper etc..

As the composition metal of metal foil, there is no particular restriction, can enumerate aluminium, copper and these combination etc..

As stripping film, there is no particular restriction, and the surface for maying be used at resin sheet or paper etc. is implemented with remover coating etc. The well known stripping film of well known lift-off processing.

Adhesive sheet can be manufactured using known method.

Firstly, applying bonding agent of the invention on the surface of substrate sheets, is formed and be bonded containing carbamate of the invention The overlay of agent.Coating method can apply known method, can enumerate roll coater (roll coater) method, chipping wheel coater (comma coater) method, die coating machine (die coater) method, reversed coating machine (reverse coater) method, silk screen printing (silk screen) method and gravure coater (gravure coater) method etc..

Secondly, overlay drying and hardening are formed the viscous of the hardening thing containing carbamate bonding agent of the invention Connect layer.There is no particular restriction for heat drying temperature, and preferably 60 DEG C~150 DEG C or so.

Secondly, stripping film to be optionally attached to using known method the exposed surface of adhesive layer.

In this way, single side adhesive sheet can be manufactured.

By carrying out the operation on two sides, two sides adhesive sheet can be manufactured.

It can also be with the method on the contrary, applying bonding agent of the invention on the surface of stripping film and being formed containing the present invention The overlay of bonding agent then form the viscous of the hardening thing containing bonding agent of the invention for overlay is dry and hardening Layer is connect, finally, in the exposed surface laminated substrate piece of adhesive layer.

Carbamate bonding agent of the invention both may be suitably used to thin film cladding or may be suitably used to thick film coating, The design freedom of the thickness of adhesive layer is high compared with before.The thickness of adhesive layer can suitably be set according to the purposes of adhesive sheet Meter, the level (5 μm~30 μm) before being, 30 μm or more of thick film that can also be difficult for before are horizontal.By making adhesive layer Thick-film can form excellent impact resistance, protect and be attached to the body bonding excellent from the function for the influence impacted and vibrated etc. Layer.There is no particular restriction for the upper limit of the thickness of adhesive layer, is 200 μm from that can be formed for the good adhesive layer of surface smoothness Left and right.For from the viewpoint of impact resistance raising and surface smoothness, the thickness of adhesive layer is preferably 30 μm~200 μm, more excellent 40 μm~150 μm are selected, particularly preferably 50 μm~150 μm.Furthermore in this specification, " thickness of adhesive layer " is not as long as indicate especially It is then the thickness after drying.

As described above, by using of the invention the comprising carbamate prepolymer (A) and beta-diketone compound (X) The bonding agent of 1 embodiment, and the sheet resistance value of adhesive layer is reduced, improve antistatic property, so as to effectively inhibit The dust of adhesive sheet adheres to.Antistatic property can be evaluated using sheet resistance value.

The sheet resistance value of the adhesive layer obtained using carbamate bonding agent of the invention is preferably less than 1.0 × 10¹¹(Ω/□).If the sheet resistance value of the level, then dust attachment can be effectively inhibited.Furthermore " sheet resistance value " It is measured using the method recorded in " embodiment " one.

Adhesive sheet of the invention can come with, the form of label, piece and two sides band etc. using.Adhesive sheet of the invention Surface protective plate, cosmetic piece and Anti-skid sheet etc. can be suitably used as.

Adhesive sheet of the invention can suitably be used as various displays (flat-panel monitor and touch-screen display etc.) and The surface protective plate of the manufactured or substrate used and optical component etc. in these manufacturing step.

As discussed above, according to the present invention, it is possible to provide can thick film coating and be capable of forming wet-heat resisting albefaction Property good adhesive layer carbamate bonding agent and adhesive sheet using it.

Bonding agent comprising carbamate prepolymer (A) Yu the 1st embodiment of the invention of beta-diketone compound (X) Can thick film coating and can be formed wet-heat resisting albefaction it is good, with the low adhesive layer of antistatic property, dust adhesion.

Profit comprising carbamate prepolymer (A) Yu the bonding agent of the 2nd embodiment of the invention of aliphatic ester (B) It is moist it is good, thick film coating and can form the good adhesive layer of wet-heat resisting albefaction.

" display "

Display of the invention includes the adhesive layer of the hardening thing containing bonding agent of the invention.Display of the invention is excellent It is selected as may include following adhesive sheet, the adhesive sheet includes the adhesive layer of the hardening thing containing bonding agent of the invention.

As display, liquid crystal display (LCD) and display of organic electroluminescence can be enumerated Flat-panel monitors such as (electroluminescence display, ELD) and by the flat-panel monitor and touch screen group Touch-screen display made of conjunction etc..

[embodiment]

Hereinafter, being illustrated to synthesis example, the embodiment of the present invention and comparative example.Furthermore in record below, only It not to indicate especially, then " part " refers to " mass parts ", and " % " refers to " quality % ".

" measurement of Mw, Mn, Mw/Mn "

Weight average molecular weight (Mw), number average molecular weight (Mn) and molecular weight distribution (Mw/Mn) are to utilize gel Permeation chromatography (gel permeation chromatography, GPC) method and measure.Determination condition is as follows.Furthermore Mw and Mn It is polystyrene scaled value.

< determination condition >

Device: Shimadzu brilliance (SHIMADZU Prominence) (manufacture of limited liability company of Shimadzu Seisakusho Ltd.),

Tubing string: 3 Gen Suo get Ke Si (SHODEX) LF-804 (manufacture of Showa electrician limited liability company) is connected in series,

Detector: differential refractive index detector,

Solvent: tetrahydrofuran (tetrahydrofuran, THF),

Flow velocity: 0.5mL/min,

Solvent temperature: 40 DEG C,

Sample solution concentration: 0.1%,

Sample injection rate: 100 μ L.

[material]

Used material is as follows.

< polyalcohol (a-1) >

(a-1-1): Kuraray polyalcohol (Kuraray Polyol) P-1010 (manufacture of Kuraray (Kuraray) company), 2 functional polyester polyalcohols, Mn1000, hydroxyl value 2 without EO base；

(a-1-2): Kuraray Polyol P-2010 (Kuraray Corporation manufacture), 2 functional polyesters without EO base are more First alcohol, Mn2000, hydroxyl value 2；

(a-1-3): Kuraray Polyol P-3010 (Kuraray Corporation manufacture), 2 functional polyesters without EO base are more First alcohol, Mn3000, hydroxyl value 2；

(a-1-4): Sani library this (Sannix) GP-1500 (manufacture of chemical conversion industry company of Sanyo), 3 officials without EO base It can polyether polyol, Mn1500, hydroxyl value 3；

(a-1-5): Sannix PP-2000 (manufacture of chemical conversion industry company of Sanyo), 2 functional polyethers without EO base are more First alcohol, Mn2000, hydroxyl value 2；

(a-1-6): Sannix GP-3000 (manufacture of chemical conversion industry company of Sanyo), 3 functional polyethers without EO base are more First alcohol, Mn3000, hydroxyl value 3；

(a-1-7): Prasy that (Placcel) 220N (manufacture of Daicel (Daicel) company), 2 officials without EO base It can polycaprolactone polyol, Mn2000, hydroxyl value 2；

(a-1-8): moral scholar model (Desmophen) 2020E (firmly changes Bayer carbamate (Sumika Bayer Urethane) company manufacture), 2 function polycarbonate polyols, Mn2000, hydroxyl value 2 without EO base；

(a-1-9): general Lai meter Nuo Er (Preminol) S4006 (manufacture of Asahi Glass company), 2 functions without EO base are poly- Ethoxylated polyhydric alcohol, Mn5500, hydroxyl value 2；

(a-1-10): EDP-1100 (manufacture of Ai Dike (ADEKA) company), the 4 functional polyethers polyalcohols without EO base, Mn1100, hydroxyl value 4.

< has polyether polyol (a-2) > of EO base

(a-2-1): Ai Dike polyethers (ADEKA polyether) AM-302 (manufacture of Chinese mugwort Dicon A/S), 3 functional polyethers are more First alcohol, glycerol POEO adduct, Mn3000, hydroxyl value 3；

(a-2-2): ADEKA polyether GR-3308 (manufacture of Chinese mugwort Dicon A/S), 3 functional polyethers polyalcohols, glycerol POEO adduct, Mn3400, hydroxyl value 3.

< polyisocyanate (b) >

(b-1): hexamethylene diisocyanate (manufacture of Tosoh (Tosoh) company)；

(b-2): the resistance to moral of Plutarch (Takenate) (registered trademark) 500 (Mitsui Chemicals, Inc.'s system is made), 1,3- dimethylbenzene two Isocyanates.

< aliphatic ester (B) >

(B-1): Niccol (NIKKOL) IPP (manufacture of daylight chemistry (Nikko Chemicals) company), palmitinic acid isopropyl Ester；

(B-2): NIKKOL IPM-100 (Nikko Chemical Company manufacture), isopropyl myristate.

< beta-diketone compound (X) >

(X-1): 2,4- pentanedione；

(X-2): 2,2- dimethyl -3,5- acetyl butyryl.

< isocyanate hardener (I) >

(I-1): Crow resistance to moral (Coronate) HL (manufacture of Tosoh company), hexamethylene diisocyanate/trihydroxy methyl Propane adduct；

(I-2): Su meter Dou (Sumidur) N-3300 (firmly changing the manufacture of Bayer carbamate company), hexa-methylene two are different Cyanate/isocyanuric acid ester；

(I-3): Coronate L (manufacture of Tosoh company), toluene di-isocyanate(TDI)/trimethylolpropane.

[synthesis of carbamate prepolymer (A)]

(synthesis example 1)

50 are added in the four-hole boiling flask for having blender, reflux cooling tube, nitrogen ingress pipe, thermometer and dropping funel The polyester polyol (a-1-1), 850 parts of the polyether polyol (a-2-1) with more than one EO base of part.It is added thereto 650 parts of toluene.In turn, 0.25 part of dibutyl tin dilaurate, 0.1 part of 2 ethyl hexanoic acid tin is added as catalyst.? 90 DEG C are slowly warming up under nitrogen environment, NCO/OH ratio (functional group's ratio), which is added dropwise, becomes 0.6 polyisocyanate of amount (48 parts) (b-1), it reacts within followed by 2 hours.After confirming the disappearance of remaining isocyanate group using infrared absorption (IR) spectrum, By reaction solution cooling and reaction was completed, obtains carbamate prepolymer (A-1) solution (nonvolatile component: 60%) therefrom. The weight average molecular weight (Mw) of carbamate prepolymer (A-1) obtained is 78,000.

By the type and their blend ratio of used polyalcohol (a) and polyisocyanate (b) and ammonia obtained In the Mw shown in table 1-1 of carbamate prepolymer.Furthermore in table 1-1, the unit of the blended amount of polyalcohol (a) is [part], is gathered different The blended amount of cyanate (b) is to indicate (in table 1-2~table 1-5 also the same) with NCO/OH ratio (functional group's ratio).

The deal of polyisocyanate (b-1) is to calculate (also the same in other synthesis examples) according to following calculating formulas.

(deal of (b-1)) [part]=

(NCO/OH ratio) × (molecular weight of (b-1))/(the NCO radix of (b-1))

× [(deal of (x1-1))/(molecular weight of (x1-1)) × (hydroxyl value of (x1-1))

+ (deal of (x2-1))/(molecular weight of (x2-1)) × (hydroxyl value of (x2-1))]

=0.6 × 168.2/2 × (50/1000 × 2+850/3000 × 3)

=48

(2~synthesis example of synthesis example 22)

In 2~synthesis example of synthesis example 22, changed as shown in table 1-1~table 1-5 used polyalcohol (a) with The type of polyisocyanate (b) and their blend ratio are carried out similarly with synthesis example 1 in addition to this and obtain carbamic acid Ester prepolymer (A-1)~carbamate prepolymer (A-19) and compare with carbamate prepolymer (D-1)~compares and uses ammonia Carbamate prepolymer (D-3).By the Mw of carbamate prepolymer obtained in each synthesis example and carbamate pre-polymerization In the nonvolatile component concentration of object solution -1~table 1-5 shown in table 1.

[embodiment 1]

By the carbamate prepolymer (A-1) obtained in 100 parts of synthesis example 1,30 parts of aliphatic ester (B-1), 0.3 Part antioxidant " IRGANOX L 135 " (BASF AG's manufacture), 0.3 part of ultraviolet absorbing agent " slave it is refined (TINUVIN) 571 " (BASF AG's manufactures), 0.3 part of light stabilizer " refined (TINUVIN) 765 of slave " (BASF AG Manufacture), 15 parts of isocyanate hardener (I-1) and 100 parts of the ethyl acetate as solvent blends, and utilizes dispersion Machine is stirred, and obtains carbamate bonding agent therefrom.Furthermore the usage amount expression of each material in addition to solvent is not waved Send out ingredient scaled value (also the same in other embodiments and comparative example).The type of used material and blend ratio are shown in table 2- In 1.

[2~embodiment of embodiment 26]

In 2~embodiment of embodiment 26, changed as shown in table 2-1~table 2-4, table 3-1~table 3-2 used in The type and blend ratio of material carry out similarly to Example 1 in addition to this and obtain carbamate bonding agent.

[1~comparative example of comparative example 3]

In 1~comparative example of comparative example 3, changed as shown in table 2-5, table 3-3 used in material type and mix Composition and division in a proportion carries out similarly to Example 1 in addition to this and obtains carbamate bonding agent.

[comparative example 4]

By the carbamate prepolymer (A-2) obtained in 100 parts of synthesis example 2, the hydrophilic addition of 20 parts of conduct " Mo Saize (Monocizer) W-260 " (manufacture of DIC (DIC) company, poly- alkane diol compound) of agent, 0.3 part of antioxygen (BASF is public for agent " IRGANOX L 135 " (BASF AG's manufacture), 0.3 part of ultraviolet absorbing agent " TINUVIN 571 " Department's manufacture), 0.3 part of light stabilizer " TINUVIN 765 " (BASF AG's manufacture), 15 parts of isocyanate hardener (I- 1) and 100 parts of the ethyl acetate as solvent blends, and is stirred using dispersion machine, obtains carbamic acid therefrom Ester bonding agent.The type of used material and blend ratio are shown in table 2-5.

[comparative example 5]

By 70 parts of polyether polyol (a-1-9), 18 parts of polyether polyol (a-1-4), 12 parts of polyether polyol (a- 1-10), 0.006 part of beta-diketone compound (X-1), 0.04 part of " the Nasa nurse ferric iron (Nacem as catalyst Ferric Iron) " (manufacture of chemistry industry companies of Japan, tri acetylacetonato iron), 40 parts of isocyanate hardener (I-3), 150 parts of the ethyl acetate as solvent blends, and is stirred using dispersion machine, obtains carbamate bonding therefrom Agent.

In comparative example 5,3 kinds of polyalcohols are directly used instead of carbamate prepolymer.By the kind of used material Class and blend ratio are shown in table 3-3.

[manufacture and evaluation that adhesive sheet (stripping film/adhesive layer/substrate sheets) is used in the 1st evaluation]

In 1~embodiment of embodiment 26 and each example of 1~comparative example of comparative example 5, carries out as described below and obtain the 1st and comment Valence is with adhesive sheet (stripping film/adhesive layer/substrate sheets).

Prepare 50 μm of thickness polyethylene terephthalate (PET) piece (dew Miller (Lumirror) T-60, Toray Manufacture) it is used as substrate sheets.Using chipping wheel coater (comma coater) (registered trademark), coating speed 30m/min's Under the conditions of, by carbamate adhesive applicating obtained in the list of substrate sheets in such a way that the thickness after drying becomes 80 μm Face.It is 2 minutes dry at 100 DEG C that overlay will be formed by, form adhesive layer.Implement thick film coating to adhesive layer is formed by The evaluation of adaptability.

Secondly, being formed by stripping film (the super Si Taige (Super Stik) for attaching 38 μm of thickness on adhesive layer The manufacture of SP-PET38, Lin get Ke (Lintec) company), it is conserved one week under 23 DEG C of 50%RH environment, obtains the 1st evaluation and use and glue Contact pin (stripping film/adhesive layer/substrate sheets).Bonding force, wet-heat resisting albefaction, wetting are implemented to the 1st evaluation adhesive sheet The evaluation of property and sheet resistance value.Furthermore in the present specification, " RH " indicates relative humidity.

[manufacture and evaluation that adhesive sheet (2 stripping films/adhesive layer/the 1st stripping film) are used in the 2nd evaluation]

In 1~embodiment of embodiment 26 and each example of 1~comparative example of comparative example 5, carries out as described below and obtain the 2nd and comment Valence is with adhesive sheet (stripping film/adhesive layer/stripping film).

Using chipping wheel coater (comma coater) (registered trademark), under conditions of coating speed 3m/min, with Thickness after drying is as 80 μm of mode by carbamate adhesive applicating obtained in 50 μm of thickness of the 1st stripping film In (Fei Mubanarui (Film binary) 50E0010-DG3, the manufacture of rattan lumber's industry company).Overlay will be formed by 100 It is 2 minutes dry at DEG C, form adhesive layer.38 μm of thickness of the 2nd stripping film (Super Stik is attached on the adhesive layer The manufacture of SP-PET38, Lin get Ke company), it is conserved 30 minutes in the environment of 23 DEG C of 50%RH, obtains the 2nd evaluation and use adhesive sheet (2 stripping films/adhesive layer/the 1st stripping film).Implement the evaluation of gel fraction with adhesive sheet to the 2nd evaluation.

[assessment item and evaluation method]

(bonding force)

The measurement sample of wide 25mm long 100mm is cut out with adhesive sheet from the 1st evaluation.In the environment of 23 DEG C of 50%RH By stripping film from measurement sample removing, the surface of the adhesive layer of exposing is attached at stainless steel plate (SUS304), from substrate sheets side After the roll press of 2kg, place 24 hours.Thereafter, according to Japanese Industrial Standards (Japanese Industrial Standards, JIS) Z0237, is surveyed under conditions of peeling rate 300mm/min, 180 ° of peel angle using cupping machine Determine the bonding force of adhesive layer.Evaluation criteria is as follows.

Zero: less than 20mN/25mm, well.

△: 20mN/25mm~100mN/25mm, can be practical.

×: greater than 100mN/25mm, can not be practical.

(wet-heat resisting albefaction)

The measurement sample of wide 25mm long 100mm is cut out with adhesive sheet from the 1st evaluation.In the environment of 23 DEG C of 50%RH By stripping film from measurement sample removing, the surface of the adhesive layer of exposing is attached at glass plate, is placed 1 hour.By it 60 After placing 72 hours in the environment of DEG C 90%RH, place 1 hour in the environment of 23 DEG C of 50%RH, haze meter is used NDH5000W (Japanese electricity Se industrial group manufacture), according to JIS K7136 measurement mist degree (haze).Evaluation criteria is as follows.

Zero: mist degree is less than 2%, well.

△: mist degree, can be practical less than 5%.

×: mist degree is 5% or more, can not be practical.

(wetability)

The measurement sample of wide 100mm long 200mm is cut out with adhesive sheet from the 1st evaluation.By the measurement sample 23 After being placed 30 minutes in the environment of DEG C 50%RH, by stripping film from measurement sample removing.Then, the bonding is held with two hands The both ends of the length direction of piece, at the same make the exposing of adhesive layer surface central part contact glass plate after, by two hands unclamp. Thus time of the measurement until adhesive layer is integrally close contact in glass plate due to the self weight because of adhesive sheet evaluates the wetting to glass Property.Time until with glass plate contiguity is shorter, the better to the compatibility of glass, thus has each of glass component using Protection glass component is easy in the manufacturing step of kind optical component etc..Evaluation criteria is as follows.

Zero: less than 3 second, well.

△: 3 seconds more than and less than 5 seconds, can be practical.

×: it 5 seconds or more, can not be practical.

(thick film coating adaptability)

In the manufacturing step of the 1st evaluation adhesive sheet, stage before attaching stripping film, visually seen with following benchmark Examine the surface for being formed by adhesive layer.Evaluation criteria is as follows.

Zero: smooth surface, well.

△: observing unevenness on surface, can be practical.

×: roller line or skew are observed on surface, it can not be practical.

(gel fraction (thick film coating adaptability))

Measure index of the gel fraction as thick film coating adaptability.If adhesive layer has maintained for a long time in maintenance processes The high state of mobility before pansclerosis, the then worry for thering is surface smoothness to reduce.It is obtained viscous after heat drying processing In the case where connecing layer gel fraction being high in a relatively short period of time, hardening is fast and is suitable for thick film and applies.

The measurement sample of wide 30mm long 100mm is cut out with adhesive sheet from the 2nd evaluation.Secondly, the 1st stripping film is measured certainly The surface of the adhesive layer of exposing, is attached at the golden net of 200 mesh by sample removing.In turn, by after the removing of the 2nd stripping film, institute is utilized It states gold net and surrounds adhesive layer entirety.The quality for measuring the structural body subtracts the quality of gold net and finds out the first prothyl of adhesive layer Amount.Then, make the structural body in the closed container for being put into ethyl acetate 250g, after impregnating 24 hours at 50 DEG C, take The structural body out.By the structural body at 100 DEG C after dry 30 minutes, quality measurement again, subtract the quality of gold net and Find out the quality of adhesive layer.Gel fraction is found out using calculating below.

(gel fraction) (%)=(quality of the adhesive layer after impregnation drying)/(quality of the adhesive layer before dipping) × 100

Evaluation criteria is as follows.

Zero: 60 mass % or more, well.

△: 40 mass %, can be practical more than and less than 60 mass %.

The mass % of ×: less than 40, can not be practical.

(sheet resistance value)

Measure index of the sheet resistance value as dust adhesion.Wide 100mm long is cut out with adhesive sheet from the 1st evaluation The measurement sample of 100mm.Then, it after the measurement sample being placed 30 minutes in the environment of 23 DEG C of 50%RH, will remove Piece is removed from measurement sample.Using resistrivity meter Hainice tower (Hiresta) UX MCP-HT800, (Mitsubishi is analyzed (Mitsubishi Analytic) manufacture), so that it is measured the surface that terminal is connected to the exposing of adhesive layer, measures sheet resistance It is worth (Ω/).Evaluation criteria is as follows.

Zero: less than 1.0 × 10¹¹Ω/ is good (level for effectively inhibiting dust attachment).

△: 1 × 10¹¹Ω/ is more than and less than 1.0 × 10¹²Ω/, can be practical.

×: 1 × 10¹²Ω/ or more, can not be practical.

[evaluation result]

By 1~embodiment of embodiment 26 and each example of 1~comparative example of comparative example 5 evaluation result is shown in table 2-1~table 2-5, In table 3-1~table 3-3.

In 1~embodiment of embodiment 19,

Manufacture include carbamate prepolymer (A), the carbamate prepolymer (A) be except in a molecule have one There is more than one EO in more than one polyalcohol (a-1), a molecule other than the polyether polyol of a above EO base More than one the polyether polyol (a-2) of base, the reaction product with more than one polyisocyanate (b)；And

The carbamate bonding agent of aliphatic ester (B).

In 20~embodiment of embodiment 22,

Manufacture include carbamate prepolymer (A), the carbamate prepolymer (A) be except in a molecule have one There is more than one EO in more than one polyalcohol (a-1), a molecule other than the polyether polyol of a above EO base More than one the polyether polyol (a-2) of base, the reaction product with more than one polyisocyanate (b)；And

The carbamate bonding agent of beta-diketone compound (X).

In 23~embodiment of embodiment 26,

Manufacture include carbamate prepolymer (A), the carbamate prepolymer (A) be except in a molecule have one There is more than one EO in more than one polyalcohol (a-1), a molecule other than the polyether polyol of a above EO base More than one the polyether polyol (a-2) of base, the reaction product with more than one polyisocyanate (b)；

Beta-diketone compound (X)；And

The carbamate bonding agent of aliphatic ester (B).

About the adhesive sheet obtained in 1~embodiment of embodiment 26, be bonding force, wet-heat resisting albefaction, wetability, Thick film applies in all assessment items of adaptability, gel fraction and sheet resistance value, as a result good or relatively better.

The reality of carbamate bonding agent of the manufacture comprising carbamate prepolymer (A) and beta-diketone compound (X) The adhesive sheet obtained in 20~embodiment of example 26 is applied for other embodiments, the sheet resistance value of adhesive layer significantly drops Low, sheet resistance value is to effectively inhibit the level of dust attachment.

Furthermore in each example of 1~embodiment of embodiment 26, the film thickness of adhesive layer is changed to 10 μm and 30 μm from 80 μm, together Implement to sample the manufacture and evaluation of adhesive sheet, as a result obtains with the film thickness of adhesive layer the case where being 80 μm identical evaluation result.

In 1~comparative example of comparative example 3,

Manufacture comprising compare with carbamate prepolymer (D) (without using in a molecule with more than one EO base Polyether polyol (a-2)), the comparison carbamate prepolymer (D) be except in a molecule have more than one EO base Polyether polyol other than more than one polyalcohol (a-1), the reaction product with more than one polyisocyanate (b)； And

The carbamate bonding agent of aliphatic ester (B).

About the adhesive sheet obtained in 1~comparative example of comparative example 3, be adhesive layer hydrophily and hardenability it is low, resistance to Damp and hot albefaction, thick film apply in the assessment item of adaptability, gel fraction and sheet resistance value, as a result bad.

In comparative example 4,

Manufacture include carbamate prepolymer (A), the carbamate prepolymer (A) be except in a molecule have one There is more than one EO in more than one polyalcohol (a-1), a molecule other than the polyether polyol of a above EO base More than one the polyether polyol (a-2) of base, the reaction product with more than one polyisocyanate (b), but be free of β-two The carbamate bonding agent of any one of ketone compound (X) and aliphatic ester (B).

It is diolation added with the poly- alkane as hydrophilic additive in carbamate bonding agent in comparative example 4 Close object, but hydrophilic improvement effect and insufficient.Its reason is not necessarily clear, it is possible that the hydrophobic portion of additive is sent out Surface orientation is given birth to.Therefore, adhesive sheet obtained is as a result bad in the assessment item of wet-heat resisting albefaction.

In addition, the additive amount of hydrophilic additive is more, thus even with ammonia identical with 1~embodiment of embodiment 26 Carbamate prepolymer (A), hardenability is also bad, and adhesive sheet obtained applies the evaluation of adaptability and gel fraction in thick film It is as a result bad in project.

In comparative example 5, manufacture without carbamate prepolymer, include 3 kinds of polyether polyol without EO base And the carbamate bonding agent of beta-diketone compound (X).

About the adhesive sheet obtained in comparative example 5, the hydrophily and hardenability of adhesive layer are low, white in bonding force, wet-heat resisting It is as a result bad in the assessment item of the property changed, thick film coating adaptability and gel fraction.In addition, even with beta-diketon chemical combination Object (X), adhesive sheet obtained in the comparative example 5 without using the carbamate prepolymer (A) with EO base is in sheet resistance It is as a result also bad in the assessment item of value.

[table 1-1]

[table 1-2]

[table 1-3]

[table 1-4]

[table 1-5]

[table 2-1]

[table 2-2]

[table 2-3]

[table 2-4]

[table 2-5]

[table 3-1]

[table 3-2]

[table 3-3]

The present invention is not limited to the embodiment and embodiments, then can be appropriate without departing from purport of the invention Design alteration.

The Japanese patent application Japan Patent Patent 2015- that this application claims filed an application on September 17th, 2015 Priority based on No. 183508, the full content disclosed are incorporated herein.

Claims (11)

1. a kind of carbamate bonding agent, it includes:

Carbamate prepolymer (A), the carbamate prepolymer (A) be except in a molecule have more than one ethylene With more than one ethyleneoxy in more than one polyalcohol (a-1), a molecule other than the polyether polyol of oxygroup More than one polyether polyol (a-2), the reaction product with more than one polyisocyanate (b)；And

Beta-diketone compound (X),

At least one of more than one polyalcohol (a-1) and more than one polyether polyol (a-2) be tool there are three with Polyalcohols more than 3 functions of upper hydroxyl.

2. a kind of carbamate bonding agent, it includes:

Carbamate prepolymer (A), the carbamate prepolymer (A) be except in a molecule have more than one ethylene With more than one ethyleneoxy in more than one polyalcohol (a-1), a molecule other than the polyether polyol of oxygroup More than one polyether polyol (a-2), the reaction product with more than one polyisocyanate (b)；And

Beta-diketone compound (X),

Relative to 100 mass parts of carbamate prepolymer (A), the additive amount of beta-diketone compound (X) be 0.01 mass parts~ 10 mass parts.

3. carbamate bonding agent according to claim 1 or 2, wherein polyalcohol (a-1) or polyether polyol (a-2) Number average molecular weight Mn be 5,000 or less.

4. carbamate bonding agent according to claim 1 or 2, wherein relative to more than one polyalcohol (a-1) And total 100 mass parts of more than one polyether polyol (a-2), the amount of more than one polyether polyol (a-2) are 50 Mass parts are more than and less than 100 mass parts.

5. carbamate bonding agent according to claim 1 or 2, one or more polyalcohol (a-1) be selected from By not having the polyester polyol of ethyleneoxy, the polyether polyol without ethyleneoxy, gathering oneself without ethyleneoxy One or more of group composed by lactone polyols and polycarbonate polyol without ethyleneoxy it is polynary Alcohol.

6. carbamate bonding agent according to claim 1 or 2 also includes aliphatic ester (B).

7. carbamate bonding agent according to claim 1 or 2, wherein the weight of carbamate prepolymer (A) is flat Average molecular weight is 30,000~500,000.

8. carbamate bonding agent according to claim 1 or 2, wherein polyisocyanate (b) is aliphatic poly isocyanide Acid esters.

9. carbamate bonding agent according to claim 1 or 2, also includes antioxidant.

10. a kind of adhesive sheet comprising the hardening thing containing carbamate bonding agent according to claim 1 or 2 Adhesive layer.

11. a kind of display comprising the hardening thing containing carbamate bonding agent according to claim 1 or 2 Adhesive layer.