CN108410396A - Adhesive composition, adhesive phase, surface protection film and optical component - Google Patents
Adhesive composition, adhesive phase, surface protection film and optical component Download PDFInfo
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- CN108410396A CN108410396A CN201810101297.9A CN201810101297A CN108410396A CN 108410396 A CN108410396 A CN 108410396A CN 201810101297 A CN201810101297 A CN 201810101297A CN 108410396 A CN108410396 A CN 108410396A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/066—Copolymers with monomers not covered by C09J133/06 containing -OH groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Abstract
The present invention relates to adhesive composition, adhesive phase, surface protection film and optical components.The present invention provide adhesive composition, by adhesive phase obtained from the binder composition cross-links, surface protection film and the optical component protected by surface protection film obtained from adhesive phase are formed on supporter, the bridging property (degree of cross linking) after the working life long enough of described adhesive composition, the rigid curing process of adhesive composition and after maturation process is high, the tone variations of adhesive phase are small, can prevent the stickup of adhesive phase from preserving after bonding force rise.The adhesive composition of the present invention is characterized in that, relative to 100 mass parts of polymer (A) containing active hydrogen functional group, what described adhesive composition contained the mass parts of isocyanates crosslinking agent (B), 0.001 mass parts~0.4 is the mass parts of the compound (C) in activated centre and 0.001 mass parts~0.4 using iron as the compound (D) in activated centre using tin.
Description
Technical field
The present invention relates to adhesive composition, adhesive phase, surface protection film and optical components.More specifically, it is related to
The high adhesive composition of bridging property (degree of cross linking) after working life long enough and rigid curing process and after maturation process can press down
Tone variations processed and can prevent paste preserve after bonding force rise adhesive phase and by supporter formed on
State surface protection film obtained from adhesive phase.(such as make in liquid crystal display etc. especially as protection optical component
Polarization plates, wave plate, phase plate, optical compensation films, reflector plate, brightness enhancement film) etc. surface purpose and the surface that uses
Protective film is useful.
Background technology
In recent years, bonding sheet is used in the various aspects such as the fixation of adherend (engagement), transport, protection, decoration.As
The typical example of the bonding sheet can enumerate to have using the acrylic compounds using acrylic polymer as basic polymer viscous
Mixture composite and the bonding sheet of adhesive phase formed.For the acrylic polymer, usually using with (first
Base) alkyl acrylate as main component and also with the copolymer of the monomer containing functional group appropriate.As with function
For the acrylic polymer of group, well-known has the propylene for being copolymerized the monomer component with functional groups such as hydroxyls
Acids polymers, cooperation isocyanate ester compound etc. is as the crosslinking agent with above-mentioned functional group reactions to obtain adhesive group
Object is closed, acrylic polymer is crosslinked, adhesive phase is consequently formed.
By the way, in the cross-linking reaction of acrylic polymer and isocyanate ester compound with hydroxyl etc.
In, usually using metallic catalysts such as the tin compounds such as dibutyl tin laurate (referring to patent document 1).
In addition, being used to form the adhesive composition of adhesive phase sometimes according to its production schedule and by adhesive composition
Certain time is preserved as former state, is crosslinked at this stage sometimes.When being crosslinked in the stage of adhesive composition, adhesive group
Close object viscosity rise or generate insoluble matter, in the formation of adhesive phase later become generate adhesive layer surface it is coarse or
The reason of thickness deviation (バ ラ つ I).In addition, also being impacted sometimes to adhesion characteristic.Therefore, it is desirable to be combined in adhesive
The stage of object is without being crosslinked, so-called working life long enough, rapidly carrying out crosslinked adhesive when adhesive phase is made
Composition.
But for having used the adhesive phase of the metallic catalysts such as tin compound, it is difficult to (add in rigid curing process
Heat treatment) after obtain highly crosslinkable (degree of cross linking) or be difficult to obtain the adhesive composition with sufficiently long working life.
In addition, also attempting the metallic catalysts such as the compound containing iron atom used as crosslinking catalyst to replace tin
Compound (referring to patent document 2).
Although can be at rigid solidification as adhesive phase obtained from metallic catalyst using the compound for containing iron atom
Highly crosslinkable (degree of cross linking) is obtained after reason (heat treatment), but then, is difficult to obtain high crosslinking when carrying out maturation process
Property (degree of cross linking) is difficult to inhibit the tone variations of the adhesive phase caused by the coloring caused by the compound containing iron atom
(coloring based on the metal complex in the compound containing iron atom).
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2005-314513 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2011-1440 bulletins
Invention content
Therefore, the present invention in, have made intensive studies in view of the foregoing, as a result it is an object of the invention to：Pass through
As basic polymer will there is the polymer (A) containing active hydrogen functional group to be crosslinked using isocyanates crosslinking agent (B)
Adhesive composition in and be used as crosslinking catalyst special ratios using tin as the compound (C) in activated centre and with iron
For the compound (D) in activated centre, the working life long enough of adhesive composition, the rigid curing process of adhesive composition are provided
The bridging property (degree of cross linking) of (heat treatment) afterwards and after maturation process is high, can inhibit by using iron as the compound in activated centre
(D) tone variations (coloring based on the metal complex in the compound containing iron atom) of adhesive phase caused by and
Can prevent adhesive phase stickup preserve after bonding force rise adhesive composition, by the binder composition cross-links and
Obtained adhesive phase forms surface protection film obtained from adhesive phase on supporter and is protected by surface protection film
Optical component.
Means for solving the problems
That is, the adhesive composition of the present invention is characterized in that, relative to the polymer (A) containing active hydrogen functional group
100 mass parts, described adhesive composition contain the mass parts of isocyanates crosslinking agent (B), 0.001 mass parts~0.4 with
Tin be activated centre compound (C) and the mass parts of 0.001 mass parts~0.4 using iron as the compound in activated centre
(D)。
It is preferably above-mentioned to contain active hydrogen functional group for hydroxyl and/or carboxyl in the adhesive composition of the present invention.
In the adhesive composition of the present invention, relative to 100 mass parts of above-mentioned polymer (A), 0.1 mass parts are preferably comprised
The above-mentioned crosslinking agent (B) of~20 mass parts.
In the adhesive composition of the present invention, preferably above-mentioned polymer (A) is contained selected from by acrylic polymer, poly- ammonia
At least one of the group that esters polymer and polysiloxane type polymers are constituted.
The adhesive phase of the present invention is preferably obtained by by above-mentioned binder composition cross-links.
The surface protection film of the present invention is preferably obtained by forming above-mentioned adhesive phase in at least one side of supporter.
The optical component of the present invention is preferably protected by above-mentioned surface protection film.
Invention effect
The present invention adhesive composition adhesive composition stage without cross-linking reaction, long enough can be obtained
Working life, certain time can be preserved, the production schedule with surplus can be formulated.In addition, after adhesive phase is made, crosslinking
Rapidly carry out, bridging property (degree of cross linking) is high, and cross-linked stable is excellent, can obtain preventing during manufacturing or in preserving by
The effect of the generation deformed caused by external pressure to the surface protection film comprising adhesive phase, damaged etc..Furthermore it is possible to inhibit with
Iron is the tone variations of the adhesive phase caused by the compound (D) in activated centre (based in the compound containing iron atom
The coloring of metal complex), it can be used in optical applications, the bonding force after capable of preventing the stickup of adhesive phase from preserving rises,
Therefore releasable is excellent, more useful.
Specific implementation mode
Hereinafter, the embodiment of the present invention will be described in detail.
The overall structure ＞ of ＜ surface protection films
Surface protection film disclosed herein is the form of commonly known as bonding sheet, adhesive tape, adhesive label, bonding film etc.
Object, be especially suitable as in optical component (for example, polarization plates, wave plate etc. are used as liquid crystal display panel constituent element
Optical component etc. used in the touch panel displays such as optical component, hard coat film) processing when, transport when protect optics structure
The surface protection film on the surface of part.Adhesive phase in above-mentioned surface protection film is typically continuously formed, but is not limited to
The form, for example, the rule such as can be created as dotted, striated or random pattern adhesive phase.In addition,
The surface protection film of the displosure can be scroll-like or sheet (piece Leaf shapes).
＜ adhesive compositions ＞
The adhesive composition of the present invention is characterized in that, relative to the polymer (A) 100 containing active hydrogen functional group
Mass parts, what described adhesive composition contained the mass parts of isocyanates crosslinking agent (B), 0.001 mass parts~0.4 is with tin
The mass parts of the compound (C) in activated centre and 0.001 mass parts~0.4 using iron as the compound (D) in activated centre.By simultaneously
It is activity using tin as the compound (C) (hereinafter sometimes referred to as " tin catalyst (C) ") in activated centre and with iron with special ratios
The compound (D) (hereinafter sometimes referred to as " iron catalyst (D) ") at center is used as crosslinking catalyst, so as to obtain adhesive group
Close bridging property (degree of cross linking) after the rigid curing process of the working life long enough of object, adhesive composition and after maturation process it is high,
The tone variations of iron adhesive phase caused by catalyst (D) can be inhibited (based on the metal complex in iron catalyst (D)
Coloring), can inhibit the tone variations of adhesive phase and can prevent adhesive phase stickup preserve after bonding force rise
Adhesive composition, therefore preferably.
(there is the polymer (A) containing active hydrogen functional group)
The adhesive composition of the present invention is characterized in that containing having the polymer (A) containing active hydrogen functional group, preferably
Above-mentioned polymer (A) is hydroxyl and/or carboxyl containing active hydrogen functional group.The energy containing active hydrogen functional group of above-mentioned polymer (A)
It is enough to be reacted with aftermentioned isocyanates crosslinking agent (B), by above-mentioned containing active hydrogen functional group to have on main chain or side chain
Polymer, be effectively performed and react with isocyanates crosslinking agent, thus preferably.
In addition, in the adhesive composition of the present invention, preferably above-mentioned polymer (A) is contained selected from by acrylic
At least one of the group that object, polyurethane polymer and polysiloxane type polymers are constituted.Wherein, from adhesive design from
From the viewpoint of spending, above-mentioned polymer (A) more preferably has the acrylic polymer containing active hydrogen functional group.
It is above-mentioned with the acrylic polymer containing active hydrogen functional group be on main chain or side chain with can with it is aftermentioned
Isocyanates crosslinking agent (B) reaction the functional group containing reactive hydrogen such as hydroxyl, carboxyl acrylic polymer.In this way
Have the acrylic polymer containing active hydrogen functional group can at least using (methyl) alkyl acrylate as main component,
Using the monomer (hereinafter, sometimes referred to as " monomer containing active hydrogen functional group ") containing reactive hydrogen as monomer component, and lead to
The copolymerization for crossing them obtains.
In the present invention, as (methyl) for constituting the principal monomer with the acrylic polymer containing active hydrogen functional group
Alkyl acrylate is preferably (methyl) alkyl acrylate for the alkyl for being 4~12 with carbon atom number.As its concrete example
For, such as can enumerate：(methyl) butyl acrylate, (methyl) isobutyl acrylate, (methyl) tert-butyl acrylate, (first
Base) amyl acrylate, (methyl) amyl acrylate, (methyl) isoamyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) propylene
Heptyl heptylate, (methyl) 2-ethyl hexyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) 2-ethyl hexyl acrylate, (methyl) propylene
Sour nonyl ester, the different nonyl ester of (methyl) acrylic acid, (methyl) decyl acrylate, (methyl) isodecyl acrylate, (methyl) acrylic acid ten
One Arrcostab, (methyl) dodecylacrylate etc..
These (methyl) alkyl acrylates with the alkyl that carbon atom number is 4~12 can be used alone, can also
It is applied in combination, content ratio as a whole is 70 mass of mass %~99.9 % preferably in monomer component, is more preferably
80 mass of mass %~99.5 %, further preferably 85 mass of mass %~99 %.Above-mentioned (methyl) alkyl acrylate
It is aftermentioned to increase containing the content of monomer or other monomers when content ratio is less than 70 mass %, acrylic polymer
Glass transition temperature increase and mobility reduce, cannot obtain enough bond areas sometimes and adherend can not be carried out
It is fixed.In addition, being difficult to adjust crosslinked degree (gel content (ゲ Le point)) sometimes.On the other hand, above-mentioned (methyl) alkyl acrylate
When the content of base ester is more than 99.9 mass %, due to containing monomer content ratio reduce, be cross-linked to form it is insufficient, sometimes
It is unable to get the cohesiveness of adhesive composition.
Above-mentioned monomer containing active hydrogen functional group use with can be reacted with crosslinking agents such as isocyanate compounds hydroxyl,
The monomer containing active hydrogen functional group of the functional group containing reactive hydrogen such as carboxyl.For as its concrete example, such as it can enumerate：
(methyl) acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid 2- hydroxy propyl esters, (methyl) acrylic acid 3- hydroxy propyl esters, (methyl) third
Olefin(e) acid 2- hydroxybutyls, (methyl) acrylic acid 4- hydroxybutyls, the own ester of (methyl) acrylic acid 6- hydroxyls, (methyl) acrylic acid 8- hydroxyls
Base monooctyl ester, (methyl) acrylic acid 10- hydroxyls last of the ten Heavenly stems ester, (methyl) acrylic acid 12- hydroxylaurics ester, acrylic acid [4- (methylol) ring
Hexyl] the hydroxyls monomer such as (methyl) hydroxyalkyl acrylates such as methyl esters.
In addition, for as other monomers containing active hydrogen functional group, can enumerate：(methyl) acrylic acid, itaconic acid, Malaysia
The carboxyl group-containing monomers such as acid, P-carboxy ethyl acrylates；N hydroxymethyl acrylamide, N- methylol methacrylamides, N- (2- hydroxyls
Base ethyl) acrylamide, N- (2- hydroxyethyls) Methacrylamide, N- (2- hydroxypropyls) acrylamide, N- (2- hydroxyls third
Base) Methacrylamide, N- (1- hydroxypropyls) acrylamide, N- (1- hydroxypropyls) Methacrylamide, N- (3- hydroxyls third
Base) acrylamide, N- (3- hydroxypropyls) Methacrylamide, N- (2- hydroxybutyls) acrylamide, N- (2- hydroxybutyls)
Methacrylamide, N- (3- hydroxybutyls) acrylamide, N- (3- hydroxybutyls) Methacrylamide, N- (4- hydroxybutyls)
N- hydroxy alkyls (methyl) acrylamides such as acrylamide, N- (4- hydroxybutyls) Methacrylamide etc..
These monomers containing active hydrogen functional group can be used alone, can also combine, and content ratio as a whole is preferred
It is 0.1 mass of mass %~30 % in monomer component, more preferably 0.5 mass of mass %~20 %, further preferably 1 matter
Measure the mass of %~15 %.When the content ratio of the above-mentioned monomer containing active hydrogen functional group is less than 0.1 mass %, it is cross-linked to form and does not fill
Point, the cohesiveness of adhesive composition cannot be obtained, surface protection film is sent out when the fixation of adherend (for example, optical component) sometimes
It is raw to deviate or generate generation of adhesive deposit when by surface protection film stripping.On the other hand, the above-mentioned monomer containing active hydrogen functional group
When content ratio is more than 30 mass %, the cohesiveness of acrylic polymer increases, therefore mobility reduces, and cannot obtain sometimes
Enough bond area and the fixation that adherend can not be carried out.
In the present invention, (methyl) acrylic acid alkyl except the above-mentioned alkyl for being 4~12 with carbon atom number can be used
Other monomers other than ester and monomer containing active hydrogen functional group are as monomer component.It, can be with for such other monomers
Enumerate (methyl) alkyl acrylate for the alkyl in addition to 4~12 with carbon atom number.Tool used in the present invention
For having the concrete example that carbon atom number is (methyl) alkyl acrylate of the alkyl in addition to 4~12, such as it can enumerate：
(methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl)
Tridecyl acrylate, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) acrylic acid ten
Six Arrcostabs, (methyl) acrylic acid heptadecane base ester, (methyl) octadecyl acrylate, (methyl) acrylic acid nonadecyl
Ester, (methyl) acrylic acid eicosane base ester etc..
In addition, for as the other monomers that can be used in the present invention, can enumerate：
N- (methyl) acryloyl morpholine, N- acryloyl pyrrolidines etc. ring-types (methyl) acrylamide；
(methyl) acrylamide, N- replace (methyl) acrylamide (for example, N- ethyls (methyl) acrylamide, the positive fourths of N-
Base (methyl) acrylamide etc. N- alkyl (methyl) acrylamide；
N, N- dimethyl (methyl) acrylamide, N, N- diethyl (methyl) acrylamide, N, N- dipropyl (methyl) third
Acrylamide, N, N- diisopropyls (methyl) acrylamide, N, N- di-n-butyls (methyl) acrylamide, N, N- di-t-butyl (first
Base) N such as acrylamide, N- dialkyl group (methyl) acrylamide etc. non-annularities (methyl) acrylamide；
N-vinyl-2-pyrrolidone, N- vinyl -2- piperidones, N- vinyl -3- morpholones, N- vinyl -2- oneself
Lactams, N- vinyl -1,3-The N- vinyl cyclic amides such as piperazine -2- ketone, N- vinyl -3,5- morpholine diketones；
(methyl) acrylate, (methyl) acrylic acid N, N- dimethylamino ethyl ester, (methyl) acrylic acid N, N-
Dimethylamino propyl ester etc. has the monomer of amino；
N- N-cyclohexylmaleimides, N-phenylmaleimide etc. have the monomer of maleimide skeleton；
N- methyl clothing health acid imide, N- ethyl clothing health acid imide, N- butyl clothing health acid imide, N-2- ethylhexyl clothing health acyls
The clothing health acid imide monomers such as imines, N- lauryl clothing health acid imide, N- cyclohexyl clothing health acid imides；Equal nitrogen atoms monomer
Deng.
For the other examples for the monomer that may be used as other monomers, it can enumerate：
(methyl) glycidyl acrylate, allyl glycidyl ether etc. have the monomer of epoxy group；
(methyl) methoxyethyl acrylate, (methyl) methoxypropyl ester, (methyl) methoxyethyl second two
Alcohol ester, (methyl) methoxyethyl polypropylene glycol ester etc. have the monomer of alkoxy；
Acrylonitrile, methacrylonitrile etc. have the monomer of cyano；
The styrene monomers such as styrene, α-methylstyrene；
The alpha-olefins such as ethylene, propylene, isoprene, butadiene, isobutene；2- methacryloxyethyl isocyanates
Deng the monomer with isocyanate group；
The vinyl esters monomer such as vinyl acetate, vinyl propionate；
The vinyl ethers monomers such as vinyl ethers；(methyl) tetrahydrofurfuryl acrylate etc. has (methyl) acrylic acid of heterocycle
Ester；
Fluoro (methyl) acrylate etc. has the monomer of halogen atom；
3- methacryloxypropyl trimethoxy silanes, vinyltrimethoxysilane etc. have alkoxy silicane
The monomer of base；
Polysiloxanes (methyl) acrylate etc. has the monomer of siloxanes key；
(methyl) acrylic acid ring pentyl ester, (methyl) cyclohexyl acrylate, (methyl) acrylic acid norbornene ester, (methyl) acrylic acid
Isobornyl thiocyanoacetate etc. has (methyl) acrylate of alicyclic type hydrocarbon；
(methyl) phenyl acrylate, (methyl) benzyl acrylate, (methyl) phenoxyethyl acrylate, (methyl) acrylic acid
Phenoxy group binaryglycol ester etc. has (methyl) acrylate of aromatic hydrocarbyl；Deng.
In addition, as other monomers, ethylene glycol two (methyl) acrylate, diethylene glycol two (methyl) can be used for example
Acrylate, triethylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) acrylate, polyethylene glycol two (methyl) third
Olefin(e) acid ester, polypropylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, hexylene glycol two (methyl) acrylic acid
Ester, pentaerythrite two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, pentaerythrite three (methyl) propylene
Acid esters, dipentaerythritol six (methyl) acrylate, epoxy acrylate, polyester acrylate, urethane acrylate,
The polyfunctional monomers such as divinylbenzene, butyl two (methyl) acrylate, hexyl two (methyl) acrylate.
These other monomers can be used alone, can also be applied in combination, and content ratio as a whole is preferably in monomer
It is 29.9 mass % or less in ingredient, more preferably 19.5 mass % or less, further preferably 14 mass % or less.Other lists
When the content ratio of body is more than 29.9 mass %, it is (methyl) alkyl acrylate of 4~12 alkyl to have carbon atom number
Content reduces, and the glass transition temperature of acrylic polymer increases and mobility reduces, and cannot obtain enough glue sometimes
It closes area and the fixation of adherend can not be carried out.
For the acrylic polymer used in the present invention, preferable weight-average molecular weight (Mw) be 100,000~3,000,000,
More preferably 200,000~2,000,000, it is more preferably 300,000~1,500,000.When weight average molecular weight (Mw) is less than 100,000, there is bonding
The tendency that the cohesiveness of oxidant layer reduces, in the fixation of adherend (for example, optical component), surface protection film shifts sometimes,
Or generate generation of adhesive deposit when by surface protection film stripping.On the other hand, when weight average molecular weight (Mw) is more than 3,000,000, have solidifying
Poly- power increases the tendency reduced to mobility because of the effect that the entangling belt of polymer comes, and cannot obtain enough bondings sometimes
Area and the fixation that adherend can not be carried out.The weight average molecular weight (Mw) of acrylic polymer refers to passing through in the present invention
GPC (gel permeation chromatography) be measured obtained from, standard polystyren conversion value.
In addition, the acrylic polymer used in the present invention preferably its glass transition temperature (Tg) is 0 DEG C or less (logical
Often -100 DEG C or more), more preferably -10 DEG C or less, be more preferably -20 DEG C or less.Glass transition temperature is higher than 0 DEG C
When, cohesiveness increases and mobility reduces, and cannot obtain enough bond areas sometimes and can not carry out the fixation of adherend.It needs
It is noted that the glass transition temperature of acrylic polymer can be by suitably changing used monomer component, group
At than and be adjusted in above range.The glass transition temperature of acrylic polymer in the present invention can be used using dynamic
The assay method of state viscoplasticity device, the calculated value etc. obtained by FOX formulas.
The polymerization of the acrylic polymer used in the present invention is not particularly limited, can by polymerisation in solution,
Method is polymerize well known to emulsion polymerization, bulk polymerization, suspension polymerisation etc..In addition, obtained copolymer can be random
Any one of copolymer, block copolymer etc..
It is above-mentioned with the polyurethane polymer containing active hydrogen functional group be on main chain or side chain with can with it is aftermentioned
Isocyanates crosslinking agent (B) reaction the functional group containing reactive hydrogen such as hydroxyl, carboxyl polyurethane polymer.As
For above-mentioned polyurethane polymer, can preferably it enumerate comprising obtained from making polyalcohol be reacted with polyisocyanate compound
The substance of polyurethane resin (polyurethane polymer).
It is above-mentioned with the polysiloxane type polymers containing active hydrogen functional group be on main chain or side chain with can with it is rear
The polysiloxane type polymers of the functional groups containing reactive hydrogen such as hydroxyl, the carboxyl of isocyanates crosslinking agent (B) reaction stated.
For above-mentioned polysiloxane type polymers, can preferably enumerate makes polyorganosiloxane resin (polysiloxane type polymers, poly- silicon
Oxygen alkane ingredient) be blended or agglutination obtained from substance.
(isocyanates crosslinking agent (B))
The adhesive composition of the present invention is characterized in that containing isocyanates crosslinking agent (B).As above-mentioned crosslinking agent
(B) it for, such as can enumerate：Trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate
(HDI), the aliphatic polyisocyantes class such as dimer acid diisocyanate；Cyclopentylene diisocyanate, two isocyanide of cyclohexylidene
The alicyclic isocyanates classes such as acid esters, isophorone diisocyanate (IPDI), 1,3- bis- (isocyanatomethyl) hexamethylene；
The fragrance such as 2,4 toluene diisocyanate, 4,4 '-methyl diphenylene diisocyanates, benzene dimethylene diisocyanate (XDI)
Race's isocyanates；Utilize allophanic acid ester bond, biuret linkage, isocyanurate-bond, two ketonic bond of urea (ウ レ ト ジ オ Application Knot
Close), urea bond, carbodiimide key, uretonimine key (ウ レ ト Application イ ミ ン Knot close),Three ketonic bond of diazine etc. is by above-mentioned isocyanates
Modified polyisocyanate body after compound modified.Such as can enumerate trade name Takenate 300S as commercially available product,
Takenate 500, Takenate 600, Takenate D165N, Takenate D178N (are above Mitsui Chemicals, Inc.'s system
Make), Sumidule T80, Sumidule L, Desmodur N3400 (it is above, live to change Bayer polyurethane (Sumika Bayer
Urethane) company manufacture), Millionate MR, Millionate MT, Coronate L, Coronate HL,
Coronate HX (above for the manufacture of Japanese Tosoh company) etc..These isocyanate compounds can be used alone, and can also mix
Close using two or more, can also and with the isocyanate compound more than isocyanate compound and trifunctional of two functions.
By and with crosslinking agent, adhesiveness and resistance to resilience (to the adhesivity of curved surface) can be taken into account, gluing reliability can be obtained more
Excellent bonding sheet.
In addition, above-mentioned isocyanate compound is applied in combination (more than the isocyanate compound and trifunctional of two functions
Isocyanate compound) in the case of, for the match ratio (mass ratio) of two compounds, preferably with the [isocyanide of two functions
Ester compound]/[isocyanate compound more than trifunctional] (mass ratio) be 0.1/99.9~50/50 coordinated, more
Preferably 0.1/99.9~20/80, further preferably 0.1/99.9~10/90, more preferably 0.1/99.9~5/95, optimal
It is selected as 0.1/99.9~1/99.Coordinated by being adjusted in above range, obtains adhesiveness and resistance to resilience is excellent
Adhesive phase is preferred mode.
In the present invention, relative to 100 mass parts of above-mentioned polymer (A), the content of above-mentioned crosslinking agent (B) is preferably 0.1
The mass parts of the mass parts of the mass parts of mass parts~20, more preferably 1 mass parts~10, further preferably 2 mass parts~8.It is above-mentioned
When the content of crosslinking agent (B) is less than 0.1 mass parts, be cross-linked to form insufficient, the cohesiveness of adhesive phase cannot be obtained, sometimes by
Surface protection film shifts when the fixation of viscous object, or by surface protection film stripping when generates generation of adhesive deposit.On the other hand, on
It when stating the content of crosslinking agent (B) more than 20 mass parts, is crosslinked and excessively carries out and cohesiveness increases, therefore mobility reduction, sometimes
It cannot obtain enough bond areas and the fixation of adherend can not be carried out.
It can also contain as needed other than above-mentioned isocyanates crosslinking agent (B) in the adhesive composition of the present invention
There are other crosslinking agents.For other crosslinking agents, epoxies crosslinking agent, melamine resinoid, nitrogen third can be used for example
Piperidine derivatives and metal chelate compound etc..These compounds can be used alone, can also be applied in combination.
For above-mentioned epoxies crosslinking agent, such as it can enumerate：N, N, N ', N '-four glycidyl group isophthalic diformazans
Amine (trade name TETRAD-X, the manufacture of gas chemical company of Mitsubishi), bis- (N, the N- diglycidyl amino methyl) hexamethylenes of 1,3-
Alkane (trade name TETRAD-C, the manufacture of gas chemical company of Mitsubishi) etc..These compounds can be used alone, can also combine and make
With.
For above-mentioned melamine resinoid, hexamethylolmelamine etc. can be enumerated.As above-mentioned aziridine
For derivative, such as it can enumerate：As the trade name HDU (mutual Yao Gong companies manufacture) of commercially available product, trade name TAZM (phases
Hu Yao works company manufactures), trade name TAZO (mutual Yao Gong companies manufacture) etc..These compounds can be used alone, can also
It is applied in combination.
For above-mentioned metal chelate compound, aluminium, titanium, nickel, zirconium etc. can be enumerated and be used as metal component, can be enumerated
Acetylene, methyl acetoacetate, ethyl acetoacetate, ethyl lactate, acetylacetone,2,4-pentanedione etc. are used as cheating compositions.These compounds can
To be used alone, can also be applied in combination.
In the case of these crosslinking agents in addition to above-mentioned crosslinking agent (B) are used in combination, as long as usage amount does not damage the present invention
Effect is just not particularly limited, and relative to 100 mass parts of above-mentioned polymer (A), the total amount with above-mentioned crosslinking agent (B) is preferably
The mass parts of the mass parts of the mass parts of 0.1 mass parts~20, more preferably 1 mass parts~10, further preferably 2 mass parts~8.
(using tin as the compound (C) in activated centre)
The adhesive composition of the present invention is characterized in that, relative to the polymer (A) 100 containing active hydrogen functional group
Mass parts, described adhesive composition contain the mass parts of 0.001 mass parts~0.4 using tin as the compound (C) in activated centre.
It is above-mentioned using tin as the compound (C) (tin catalyst (C)) in activated centre by coordinating, and using only aftermentioned iron catalyst (D)
The case where compare, the tone variations of adhesive phase can be inhibited, and the bonding force that can inhibit to paste after preserving rises, then removes
Property it is excellent, be preferred mode.For above-mentioned tin catalyst (C), such as it can enumerate：Dibutyl tin dichloride, two fourths
Base tin oxide, dibutyl tin bibromide, dibutyitin maleate, dibutyl tin laurate, dibutyltin diacetate, dibutyl
Artificial gold, tributyl methoxyl group tin, tributyltin acetate, triethyl group ethyoxyl tin, tributyl ethyoxyl tin, dioctyl oxidation
Tin, tin dilaurate dioctyl tin, tributyltin chloride, trichloroacetic acid tributyl tin, 2 ethyl hexanoic acid tin etc..These tin catalysts
(C) it can be used alone, can also be applied in combination.
Relative to 100 mass parts of above-mentioned polymer (A), above-mentioned adhesive composition contains the mass of 0.001 mass parts~0.4
Part above-mentioned tin catalyst (C), the mass parts of preferably 0.002 mass parts~0.3, the mass of more preferably 0.003 mass parts~0.2
Part, the mass parts of further preferably 0.004 mass parts~0.1.It is less than 0.001 mass parts in the content of above-mentioned tin catalyst (C)
In the case of, the bridging property after maturation process (degree of cross linking) becomes inadequate sometimes.On the other hand, difficult when being more than 0.4 mass parts
Viscosity when preservation to inhibit adhesive composition (fluid,matching) rises, and is unable to fully obtain the suitable of adhesive composition sometimes
With the phase, it is deteriorated to the ageing stability of adhesive composition (fluid,matching).
(using iron as the compound (D) in activated centre)
The adhesive composition of the present invention is characterized in that, relative to the polymer (A) 100 containing active hydrogen functional group
Mass parts, described adhesive composition contain the mass parts of 0.001 mass parts~0.4 using iron as the compound (D) in activated centre.
It is above-mentioned using iron as the compound (D) (iron catalyst (D)) in activated centre by coordinating, the case where with using only tin catalyst (C)
Difference can obtain the height of the bridging property (degree of cross linking) after rigid curing process and working life sufficiently long adhesive composition, be excellent
The mode of choosing.For above-mentioned iron catalyst (D), iron chelating compounds can be suitably used, such as can be with general formula Fe
(X) (Y) (Z) is indicated.Iron chelating compounds are by the combination of (X) (Y) (Z) by Fe (X)3、Fe(X)2(Y)、Fe(X)(Y)2、Fe
(X) any one of (Y) (Z) is indicated.In iron chelating compounds Fe (X) (Y) (Z), (X) (Y) (Z) is the ligand to Fe respectively,
For example, in the case that X, Y or Z are beta-diketon, as beta-diketon, can enumerate：Acetylacetone,2,4-pentanedione, hexane -2,4- diketone, heptane -
2,4- diketone, heptane -3,5- diketone, 5- methyl-hexane -2,4- diketone, octane -2,4- diketone, 6- methyl heptanes -2,4- two
Ketone, 2,6- dimethyl heptane -3,5- diketone, nonane -2,4- diketone, nonane -4,6- diketone, 2,2,6,6- tetramethyls base heptane -3,
5- diketone, tridecane -6,8- diketone, 1- phenyl butane -1,3- diketone, hexafluoroacetylacetone, ascorbic acid etc..
X, it in the case that Y or Z is 'beta '-ketoester, as 'beta '-ketoester, can enumerate：Methyl acetoacetate, ethyl acetoacetate,
Acetoacetate n-propyl, isopropyl acetoacetate, acetoacetate N-butyl, the secondary butyl ester of acetoacetate, tert-butyl acetoacetate, third
Methyl acetoacetate, Propionylacetic acid ethyl ester, propionyl n-propyl acetate, propionyl isopropyl acetate, propionyl n-butyl acetate, propionyl acetic acid
Secondary butyl ester, propionyl tert-butyl acetate, benzyl acetoacetate, dimethyl malenate, diethyl malonate etc..
In the present invention, can also use the iron catalyst in addition to iron chelating compounds, for example, can also use iron with
The compound of alkoxy, halogen atom, acyloxy.In the case of the compound of iron and alkoxy, as alkoxy, Ke Yilie
It lifts：Methoxyl group, ethyoxyl, positive propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, amoxy, hexyloxy,
Heptan oxygroup, octyloxy, 2- ethylhexyls, phenoxy group, cyclohexyloxy, benzyloxy, 1- benzyl naphthoxys etc..
In the case of the compound of iron and halogen atom, as halogen atom, fluorine, chlorine, bromine, iodine etc. can be enumerated.
In the case of the compound of iron and acyloxy, as acyloxy, it can enumerate：2 ethyl hexanoic acid, octanoic acid, cycloalkanes
Acid, resin acid are (with rosin acid, neoabietic acid, d- pimaric acids, iso- d- pimaric acids, podocarpic acid, gluconic acid, fumaric acid, lemon
The fat as main component such as the amino acid such as lemon acid, aspartic acid, α-ketoglutaric acid, malic acid, succinic acid, glycine or histidine
Fat same clan organic acid；With the aromatic series aliphatic acid as main component such as benzoic acid, cinnamic acid, p-Coumaric Acid) etc..
In the present invention, in these iron catalysts (D), from the viewpoint of reactivity, curability, preferably there is beta-diketon
As the iron chelating compounds of ligand, three (acetyl acetone) iron are particularly preferably used.These iron catalysts (D) can be one
Kind, can also and with two or more.
In the present invention, relative to 100 mass parts of above-mentioned polymer (A), adhesive composition of the invention contains 0.001
The above-mentioned iron catalyst (D) of the mass parts of mass parts~0.4, the mass parts of preferably 0.002 mass parts~0.3, more preferably 0.003
The mass parts of mass parts~0.2, the mass parts of further preferably 0.004 mass parts~0.1.In the content of above-mentioned iron catalyst (D)
In the case of less than 0.001 mass parts, the bridging property (degree of cross linking curability) after rigid curing process is insufficient, is sometimes prone to produce
The bad order (pit of adhesive phase) of the raw adhesive phase caused by external pressure.On the other hand, when being more than 0.4 mass parts, production
The tone variations of raw adhesive phase, it is difficult to be checked in the state of fitting in optical component, therefore not preferably.
(compound (E) for causing ketoenol tautomerization)
The adhesive composition of the present invention can contain the compound (E) for generating ketoenol tautomerization (hereinafter, sometimes
Referred to as " tautomerism compound (E) ").Tautomerism compound (E) refers to being generated between enol in keto-acid object (ketone, aldehyde) mutually
The compound for becoming isomery, is the compound to work as chelate agent for above-mentioned iron catalyst (D).By using above-mentioned
Tautomerism compound (E) inhibits the excessive viscosity of the adhesive composition after crosslinking agent cooperation to increase, gelation, can
Realize the effect for the working life for extending adhesive composition.Isocyanates crosslinking agent (B) is especially stated in use as friendship
It is especially significant containing above-mentioned tautomerism compound (E) in the case of joining agent.The technology is for example in above-mentioned adhesive composition
It can preferably be applied in the case of for organic solvent solution or solvent-free form.
For above-mentioned tautomerism compound (E), various beta-dicarbonyl compounds can be used.As concrete example
Speech, can enumerate：Acetylacetone,2,4-pentanedione, 2,4- hexanediones, 3,5- heptane diketone, 2- methyl hexane -3,5- diketone, 6- methyl heptan
The beta-diketons classes such as alkane -2,4- diketone, 2,6- dimethyl heptane -3,5- diketone；Methyl acetoacetate, ethyl acetoacetate, acetyl
The acetoacetic esters such as isopropyl acetate, tert-butyl acetoacetate；Propionylacetic acid ethyl ester, Propionylacetic acid ethyl ester, propionyl acetic acid are different
The propionyl acetate esters such as propyl ester, propionyl tert-butyl acetate；Ethyl isobutyryl, ethyl isobutyryl, isobutyl ethyl acetoacetic acid are different
The isobutyryls acetate esters such as propyl ester, isobutyryl tert-butyl acetate；The malonic acid esters such as methylmalonate, malonic ester；Deng.Its
In, as preferred compound, acetylacetone,2,4-pentanedione and acetoacetic ester can be enumerated.The generation ketoenol tautomerization
Compound may be used alone, can also be used in combination two or more.
It is preferably comprised relative to 100 mass parts of above-mentioned polymer (A) about the content of above-mentioned tautomerism compound (E)
The mass parts of the mass parts of 0.5 mass parts~10, further preferably 1 mass parts~5.The content of above-mentioned tautomerism compound (E) is small
When 0.5 mass parts, the unfavorable condition for being unable to get enough working lives is generated sometimes, when more than 10 mass parts, although can
Viscosity is inhibited to increase, but the cohesiveness deficiency of adhesive phase sometimes.Speculate this is because：Remain on adhesive phase after curing process
Above-mentioned tautomerism compound work as plasticizer, so that cohesiveness is reduced.
In addition, in the adhesive composition of the present invention, other well known additive can also be contained, for example, can root
According to purposes to be used be properly added the powder of colorant, pigment etc., surfactant, plasticizer, tackifier, low molecular weight
Polymer, surface lubricant, levelling agent, antioxidant, corrosion inhibiter, light stabilizer, ultra-violet absorber, polymerization inhibitor, silane are even
Join agent, inorganic or organic filler, metal powder, particle shape, foil-like object etc..
＜ adhesive phases and surface protection film ＞
The adhesive phase of the present invention is preferably obtained by by above-mentioned binder composition cross-links.It is above-mentioned by suitably adjusting
The structural unit of polymer (A), component ratio, the selection of crosslinking agent and addition ratio etc. and be crosslinked, can be bonded
Power stability, releasable, low stain and the superior adhesive phase of heat resistance and surface protection film.
The surface protection film of the present invention is preferably obtained by forming above-mentioned adhesive phase in at least one side of supporter.On
It is to form material obtained from above-mentioned adhesive phase in at least one side of supporter to state surface protection film, at this point, adhesive combines
The crosslinking of object usually carries out after the coating of adhesive composition, but coating adhesive composition and can also be carried out on partition
It is dry, the adhesive phase comprising the adhesive composition after crosslinking on partition is then transferred to supporter.
In addition, the method for forming adhesive phase on supporter is not particularly limited, such as can make in the following manner
Make：Above-mentioned adhesive composition (solution) is coated on supporter and dries and removes polymer solvent etc., on supporter
Form adhesive phase.It is then possible to for the ingredient for adjusting adhesive phase transfer, adjust the purpose of cross-linking reaction and supported
Shield.In addition, when adhesive composition being coated on supporter and making surface protection film, in order to be uniformly coated to prop up
On support body, more than one the solvent in addition to polymer solvent can be newly added in above-mentioned adhesive composition.
In addition, as the present invention adhesive phase forming method for, can use at surface protection film (bonding sheet)
Manufacture in the well known method that uses.Specifically, can for example enumerate：Roller coating, intaglio plate coating, reversed coating, roller brush, spray
Painting, air knife coating method etc..
The thickness of the adhesive phase of the present invention is usually 1 μm~100 μm, preferably 3 μm~50 μm, more preferably 5 μm~
30μm.The thickness of adhesive phase within the above range when, be easy to get the balance of appropriate releasable and adhesiveness, therefore excellent
Choosing.
＜ supporters ＞
For above-mentioned supporter, it is not particularly limited as long as it can be formed as sheet, membranaceous supporter, example
It can such as enumerate：Polyethylene, polypropylene, poly 1-butene, poly(4-methyl-1-pentene), ethylene-propylene copolymer, ethylene -1- butylene
Copolymer, ethylene-ethyl acrylate copolymer, ethylene-vinyl alcohol copolymer, has ring-type at vinyl-vinyl acetate copolymer
Or it is the polyolefin films such as polyolefin of norbornene structure, polyethylene terephthalate, polyethylene naphthalate, poly-
The polyester films such as mutual-phenenyl two acid bromide two alcohol ester, polyacrylate film, polystyrene film, nylon 6, nylon 6,6, partial aromatic adoption
The PA membranes such as amide, polyvinylidene chloride film, polycarbonate membrane, pvf film, polyimide film, gather polychloroethylene film
Vinyl alcohol film etc..
The thickness of supporter in the present invention is typically about 5 μm~about 200 μm, is preferably from about 10 μm~about 100 μm, is more excellent
It is selected as about 20 μm~about 75 μm.
For above-mentioned supporter, can also carry out utilizing polysiloxane-based, fluorine-containing type, chain alkyl class or fat as needed
The demoulding of the progress such as releasing agent, silicon dioxide powder of fat amides and antifouling process, sour processing, alkali process, primary coat processing, corona
The antistatic process such as processing, corona treatment, UV treatment etc. easily gluing processing, application type, kneading type, vapor deposition type.
The surface protection film of the present invention can be formed in the form of being wound into a roll tubular, can also be in the form of sheet material is laminated
It is formed.That is, the surface protection film of the present invention can have the arbitrary form such as sheet, band-like, membranaceous.Alternatively, it is also possible to basis
It is cut into form appropriate using purpose, implements punch press process etc..
<Partition>
The surface protection film of the present invention can be as needed for the purpose fitting partition of protection adhesive layer surface.
For the material for constituting above-mentioned partition, there are paper, plastic foil, it is excellent from the viewpoint of surface smoothness is excellent
Choosing uses plastic foil.For the film, it is not particularly limited as long as the film that can protect above-mentioned adhesive phase, such as can
To enumerate：Polyethylene film, polypropylene screen, polybutene film, polybutadiene film, polymethylpentene film, polychloroethylene film, vinyl chloride are total
Polymers film, polyethylene terephthalate film, polybutylene terephthalate (PBT) film, polyurethane film, ethane-acetic acid ethyenyl ester
Co-polymer membrane etc..
The thickness of above-mentioned partition is typically about 5 μm~about 200 μm, is preferably from about 8 μm~about 100 μm, even more preferably about 10 μ
M~about 50 μm.Above-mentioned partition can also be carried out as needed utilizing polysiloxane-based, fluorine-containing type, chain alkyl class or fat
The demoulding of the progress such as releasing agent, silicon dioxide powder of amides and antifouling process or application type, kneading type, vapor deposition type etc. are anti-quiet
Electric treatment.
Surface protection film disclosed herein can also be in a manner of including also other layers in addition to supporter and adhesive phase
To implement.For above-mentioned other layers, the priming coat for the anchoring that can improve antistatic backing, adhesive phase can be enumerated
(anchor layer) etc..
The optical component of the present invention is preferably protected by above-mentioned surface protection film.Above-mentioned surface protection film is glued due to that can prevent
Bonding force after the stickup of mixture layer preserves rises and releasable is excellent, therefore when being processed to, transport, delivering etc.
Surface protection purposes (surface protection film), to as useful in order to protect the surface of above-mentioned optical component (polarization plates etc.)
Surface protection film.In addition, the tone variations due to inhibiting the adhesive phase for constituting surface protection film, it can be in optics
It is fitted in the state of surface protection film and is checked on component, can help improve quality.
Embodiment
Hereinafter, to specifically indicating that the composition of the present invention and the embodiment etc. of effect illustrate, but the present invention is not by these
The restriction of embodiment.It should be noted that the assessment item in embodiment etc. is determined in a manner of described as follows.
The preparation ＞ of ＜ acrylic polymers 1
With stirring blade, thermometer, nitrogen ingress pipe, condenser four-hole boiling flask in put into acrylic acid 2- ethyl hexyls
96.2 mass parts of ester (2EHA), 3.8 mass parts of Hydroxyethyl Acrylate (HEA), as polymerization initiator 2,2 '-azos two it is different
0.2 mass parts of butyronitrile, 150 mass parts of ethyl acetate, import nitrogen while being slowly stirred, and the liquid temperature in flask is maintained at
About 65 DEG C and 6 hours polymerisations of progress, to be prepared for 1 solution of acrylic polymer (40 mass %).Above-mentioned acrylic acid
The weight average molecular weight (Mw) of Type of Collective object 1 is 540,000, glass transition temperature (Tg) is -68 DEG C.
The preparation ＞ of ＜ acrylic polymers 2
With stirring blade, thermometer, nitrogen ingress pipe, condenser four-hole boiling flask in put into acrylic acid 2- ethyl hexyls
98.5 mass parts of ester (2EHA), 1.5 mass parts of acrylic acid 4- hydroxybutyls (4HBA), the 2,2 '-azos as polymerization initiator
0.2 mass parts of bis-isobutyronitrile, 150 mass parts of ethyl acetate, import nitrogen while being slowly stirred, and the liquid temperature in flask is protected
It holds at about 60 DEG C and carries out 6 hours polymerisations, to be prepared for 2 solution of acrylic polymer (40 mass %).Above-mentioned third
The weight average molecular weight (Mw) of alkene acids polymers 2 is 500,000, glass transition temperature (Tg) is -70 DEG C.
The preparation ＞ of ＜ acrylic polymers 3
With stirring blade, thermometer, nitrogen ingress pipe, condenser four-hole boiling flask in put into acrylic acid 2- ethyl hexyls
98.48 mass parts of ester (2EHA), 1.5 mass parts of acrylic acid 4- hydroxybutyls (4HBA), 0.02 mass parts of acrylic acid (AA), conduct
The 2 of polymerization initiator, 2 '-azodiisobutyronitrile, 0.2 mass parts, 150 mass parts of ethyl acetate, import while being slowly stirred
Liquid temperature in flask is maintained at about 60 DEG C and carries out 6 hours polymerisations, to be prepared for acrylic polymer 3 by nitrogen
Solution (40 mass %).The weight average molecular weight (Mw) of above-mentioned acrylic polymer 3 is 500,000, glass transition temperature (Tg)
It is -70 DEG C.
The preparation ＞ of ＜ acrylic polymers 4
With stirring blade, thermometer, nitrogen ingress pipe, condenser four-hole boiling flask in put into acrylic acid 2- ethyl hexyls
98.494 mass parts of ester (2EHA), 0.006 mass parts of acrylic acid (AA), are made 1.5 mass parts of acrylic acid 4- hydroxybutyls (4HBA)
It is the 2 of polymerization initiator, 2 '-azodiisobutyronitrile, 0.2 mass parts, 150 mass parts of ethyl acetate are led while being slowly stirred
Enter nitrogen, the liquid temperature in flask is maintained at about 60 DEG C and carries out 6 hours polymerisations, to be prepared for acrylic polymer
4 solution (40 mass %).The weight average molecular weight (Mw) of above-mentioned acrylic polymer 4 is 470,000, glass transition temperature (Tg)
It is -70 DEG C.
The preparation ＞ of ＜ acrylic polymers 5
With stirring blade, thermometer, nitrogen ingress pipe, condenser four-hole boiling flask in put into acrylic acid 2- ethyl hexyls
90.893 mass parts of ester (2EHA), 9.089 mass parts of acrylic acid 4- hydroxybutyls (4HBA), 0.018 mass parts of acrylic acid (AA),
As 0.2 mass parts of the 2 of polymerization initiator, 2 '-azodiisobutyronitrile, 150 mass parts of ethyl acetate, while being slowly stirred
Nitrogen is imported, the liquid temperature in flask is maintained at about 60 DEG C and carries out 6 hours polymerisations, to be prepared for acrylic
5 solution of object (40 mass %).The weight average molecular weight (Mw) of above-mentioned acrylic polymer 5 is 640,000, glass transition temperature
(Tg) it is -67 DEG C.
1 ＞ of ＜ embodiments
[preparation of acrylic adhesives solution]
1 solution of above-mentioned acrylic polymer (40 mass %) is diluted to 25 mass % with ethyl acetate, in the solution
Toluene as crosslinking agent, as trifunctional isocyanates compound is added in 400 mass parts (100 mass parts of solid constituent)
Trimethylolpropane adduct (manufacture of Tosoh company, Coronate L) 5.33 mass parts (4 matter of solid constituent of diisocyanate
Measure part), as crosslinking catalyst, tin dilaurate dioctyl tin (Tokyo Fine Chemical corporations as tin catalyst
Make, EMBILIZER OL-1,1 mass % ethyl acetate solutions) 2 mass parts (0.02 mass parts of solid constituent), as iron be catalyzed
Three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 mass % ethyl acetate solutions) 1 of agent
Mass parts (0.01 mass parts of solid constituent), 3 mass parts of acetylacetone,2,4-pentanedione, are mixed, viscous to be prepared for acrylic compounds
Mixture solution.
[making of surface protection film]
By above-mentioned acrylic adhesives solution coating in the polyethylene terephthalate film with antistatic process layer
The face opposite with antistatic process face of (manufacture of Resins Corporation of Mitsubishi, DIAFOIL T100G38,38 μm of thickness), at 130 DEG C
Heating 20 seconds, forms the adhesive phase of 15 μm of thickness.Then, the surface of above-mentioned adhesive phase fitting single side is implemented it is poly-
The polysiloxanes process face of the polyethylene terephthalate film (25 μm of thickness) of siloxane treated, to make surface guarantor
Cuticula.
2 ＞ of ＜ embodiments
Using acrylic polymer 2 replace acrylic polymer 1 used in embodiment 1, in addition to this, by with
1 same method of embodiment has made surface protection film.
3 ＞ of ＜ embodiments
Using acrylic polymer 3 replace acrylic polymer 1 used in embodiment 1, in addition to this, by with
1 same method of embodiment has made surface protection film.
4 ＞ of ＜ embodiments
Using acrylic polymer 4 replace acrylic polymer 1 used in embodiment 1, in addition to this, by with
1 same method of embodiment has made surface protection film.
5 ＞ of ＜ embodiments
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 3 mass parts (0.03 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), use three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 mass % second
Acetate solution) 0.5 mass parts (0.005 mass parts of solid constituent) are instead of 1 mass parts (0.01 mass parts of solid constituent), except this
In addition, surface protection film has been made by method similarly to Example 1.
6 ＞ of ＜ embodiments
Use three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 mass % acetic acid second
Ester solution) 3 mass parts (0.03 mass parts of solid constituent) replacement 1 mass parts used in embodiment 1 (0.01 mass of solid constituent
Part), in addition to this, surface protection film is made by method similarly to Example 1.
7 ＞ of ＜ embodiments
Use three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 mass % acetic acid second
Ester solution) 5 mass parts (0.05 mass parts of solid constituent) replacement 1 mass parts used in embodiment 1 (0.01 mass of solid constituent
Part), in addition to this, surface protection film is made by method similarly to Example 1.
8 ＞ of ＜ embodiments
Use three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 mass % acetic acid second
Ester solution) 8 mass parts (0.08 mass parts of solid constituent) replacement 1 mass parts used in embodiment 1 (0.01 mass of solid constituent
Part), in addition to this, surface protection film is made by method similarly to Example 1.
9 ＞ of ＜ embodiments
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 3 mass parts (0.03 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), in addition to this, surface protection film is made by method similarly to Example 1.
10 ＞ of ＜ embodiments
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 5 mass parts (0.05 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), in addition to this, surface protection film is made by method similarly to Example 1.
11 ＞ of ＜ embodiments
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 8 mass parts (0.08 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), in addition to this, surface protection film is made by method similarly to Example 1.
12 ＞ of ＜ embodiments
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 3 mass parts (0.03 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), pass through method system similarly to Example 1 in addition to this instead of 3 mass parts using 9 mass parts of acetylacetone,2,4-pentanedione
Surface protection film is made.
13 ＞ of ＜ embodiments
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 8 mass parts (0.08 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), pass through method system similarly to Example 1 in addition to this instead of 3 mass parts using 9 mass parts of acetylacetone,2,4-pentanedione
Surface protection film is made.
14 ＞ of ＜ embodiments
Acrylic polymer 1 used in embodiment 1 is replaced using acrylic polymer 5, used as crosslinking agent
, the trimethylolpropane adduct of toluene di-isocyanate(TDI) as trifunctional isocyanates compound (manufacture of Tosoh company,
Coronate L) 2.72 mass parts (2 mass parts of solid constituent) replace 5.33 mass parts (4 mass parts of solid constituent), except this with
Outside, surface protection film has been made by method similarly to Example 1.
15 ＞ of ＜ embodiments
Use the isocyanuric acid ester-formin (Mitsui Chemicals, Inc.'s system make, Coronate HX) 2 of hexamethylene diisocyanate
Mass parts (2 mass parts of solid constituent) replace the toluene two as trifunctional isocyanates compound used in embodiment 14 different
Trimethylolpropane adduct (manufacture of Tosoh company, Coronate L) 2.72 mass parts (2 mass of solid constituent of cyanate
Part), in addition to this, surface protection film is made by method similarly to Example 14.
1 ＞ of ＜ comparative examples
In addition to not using used in embodiment 1 three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem
Fe (III), 1 mass % ethyl acetate solutions) other than 1 mass parts (0.01 mass parts of solid constituent), by similarly to Example 1
Method made surface protection film.
2 ＞ of ＜ comparative examples
Use tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, EMBILIZER OL-1,1 mass %
Ethyl acetate solution) 50 mass parts (0.5 mass parts of solid constituent) replacement, 2 mass parts (solid constituent used in embodiment 1
0.02 mass parts), and without using three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 matter
Measure % ethyl acetate solutions) 1 mass parts (0.01 mass parts of solid constituent), in addition to this, pass through method similarly to Example 1
Surface protection film is made.
3 ＞ of ＜ comparative examples
In addition to do not use tin dilaurate dioctyl tin used in embodiment 1 (Tokyo Fine Chemical companies manufacture,
EMBILIZER OL-1,1 mass % ethyl acetate solutions) other than 2 mass parts (0.02 mass parts of solid constituent), by with implementation
1 same method of example has made surface protection film.
4 ＞ of ＜ comparative examples
Without using tin dilaurate dioctyl tin used in embodiment 1 (Tokyo Fine Chemical companies manufacture,
EMBILIZER OL-1,1 mass % ethyl acetate solutions) 2 mass parts (0.02 mass parts of solid constituent), and use three (second
Acyl acetone closes) iron (manufacture of chemistry industry companies of Japan, Nacem Fe (III), 1 mass % ethyl acetate solutions) 50 mass parts
(0.5 mass parts of solid constituent) replace 1 mass parts (0.01 mass parts of solid constituent), in addition to this, by similarly to Example 1
Method made surface protection film.
The measurement ＞ of the weight average molecular weight (Mw) of ＜ acrylic polymers
The weight average molecular weight (Mw) of acrylic polymer is determined using GPC (gel permeation chromatography).
Device：The manufacture of Tosoh company, HLC-8220GPC
Chromatographic column：
Sample column：The manufacture of Tosoh company, TSKguardcolumn Super HZ-H (1)+TSKgel Super HZM-H
(2)
Reference column：The manufacture of Tosoh company, TSKgel Super H-RC (1)
Flow velocity：0.6ml/ minutes
Sample size：10μl
Column temperature：40℃
Eluent：THF
Sample introduction concentration：0.2 mass %
Detector：Differential refractometer
It should be noted that weight average molecular weight (Mw) is gone out by polystyrene Conversion Calculation.
The theoretical value ＞ of ＜ glass transition temperatures (Tg)
About the glass transition temperature (Tg) (DEG C) of the acrylic polymer obtained in embodiment and comparative example, use
Following literature values as the homopolymer obtained by each monomer glass transition temperature Tg n (DEG C) and found out by following formula.
Formula：1/ (Tg+273)=Σ [Wn/ (Tgn+273)]
[in formula, Tg (DEG C) indicates that the glass transition temperature of copolymer, Wn (-) indicate the mass fraction of each monomer, Tgn
(DEG C) indicates that the glass transition temperature of the homopolymer obtained by each monomer, n indicate the type of each monomer.]
Literature value：
2-EHA (2EHA)：-70℃
Hydroxyethyl Acrylate (HEA)：-15℃
Acrylic acid 4- hydroxybutyls (4HBA)：-32℃
Acrylic acid (AA)：106℃
It should be noted that as literature value, with reference to " compounding design and new application of acrylic resin are unfolded
(ア Network リ Le Trees fat He Cheng Let Meter と new application Zhan Open) " (central Management and exploitation center publishing department distribution) and " polymer hand
Volume (Polymer Handbook) " (John Wiley＆Sons).
The measurement ＞ of ＜ working lives
Binder solution is prepared, is sealed against in the glass system sample bottle of capacity 1mL, and it is small to placed 8 at room temperature
When.Later, the mobility of binder solution is observed by visual observation, has been judged " working life ".The benchmark of judgement is as described below.
○：When sample bottle being made to stand upside down, binder solution flowing.
×：When sample bottle being made to stand upside down, binder solution does not flow.
The reactivity ＞ of isocyanate group of the ＜ based on catalyst
Use Fourier transform infrared spectroscopy (FT-IR) analyzer (manufacture of platinum Elmer Co., Ltd, model " Frontier
FT-IR "), adhesive layer surface is determined by ATR (Attenuated Total Reflection, decaying total reflection) method
The peaks IR.For " the IR peak intensities of isocyanate group ", 2275cm is used-1The peak intensity at place.
It should be noted that above-mentioned isocyanate group is to come from isocyanates crosslinking agent (isocyanate compound)
Isocyanate group.In evaluation in this, it is crosslinked instead according to the Assessment of Changes isocyanate group of the IR peak intensities of isocyanate group
(disappearance) ratio (reactivity) used in answering.
Adhesive phase is measured (after just having carried out curing process to adhesive composition) after just having made surface protection film
" IR peak intensities (after just the making) " on surface, then " IR peak intensities (room temperature 7 days is determined after being cured 7 days under room temperature (23 DEG C)
Afterwards) ".
" reactivity (after just making) of the isocyanate group based on catalyst " is calculated by following formula.
" reactivity (after just making) of the isocyanate group based on catalyst "=100 × { (in addition to without using catalyst
The IR peak intensities of the adhesive phase of all same)-(the IR peak intensities of adhesive phase (after just making))/(except without using catalyst with
The IR peak intensities of the adhesive phase of outer all same)
" reactivity (after room temperature 7 days) of the isocyanate group based on catalyst " is calculated by following formula.
" reactivity (after room temperature 7 days) of the isocyanate group based on catalyst "=100 × (except without using catalyst with
The IR peak intensities of the adhesive phase of outer all same)-(the IR peak intensities (after room temperature 7 days) of adhesive phase) }/(except without using catalysis
The IR peak intensities of the adhesive phase of all same other than agent)
It should be noted that for as the reactivity (after just making) of the above-mentioned isocyanate group based on catalyst, it is excellent
It is selected as 10 or more, more preferably 20 or more, particularly preferably 25 or more.If the above-mentioned reactivity based on catalyst (just makes
Afterwards) within the above range, then the production of the bad order (pit of adhesive surface) of the adhesive caused by external pressure can be reduced
It is raw, therefore preferably.
In addition, for as the reactivity (after room temperature 7 days) of the above-mentioned isocyanate group based on catalyst, preferably 80 with
On, more preferably 85 or more, particularly preferably 90 or more.If the above-mentioned reactivity (after room temperature 7 days) based on catalyst is upper
State in range, then can inhibit by unreacted and bonding force caused by the reacting of remaining isocyanates crosslinking agent and adherend
Rise, therefore preferably.
＜ hue b values ＞
The surface protection film of each example is cured 7 days at room temperature, is then cut into the size of width 50mm, length 50mm,
Partition is removed from the adhesive layer surface of surface protection film, then high speed integrating sphere type transmissivity analyzer is utilized (to paint in village
Color company of technical research institute manufacture, model " DOT-3C ") it determines " b values ".B values refer to Hunter Lab values.
It should be noted that above-mentioned b values are preferably 2.00 hereinafter, more preferably 1.50 hereinafter, further preferably 1.00
Below.If above-mentioned b values are within the above range, the variation of the tone of adhesive phase is practical when for optical component purposes
Using the upper level that there is no problem (adhesive phase will not be colored as yellow or red), therefore preferably.
The measurement ＞ of ＜ bonding forces
The surface protection film of each example is cured 7 days at room temperature, is then cut into the size of width 25mm, length 100mm,
Partition is removed from the adhesive layer surface of surface protection film, is then crimped onto the polarization for fitting in glass plate temporarily with hand roller
Plate (manufacture of Dong electrician company, triacetyl cellulose class polarization plates, width：70mm, length：Then it uses on surface 100mm)
Small-sized laminating machine (pressure, the 0.3m/ minutes speed of 0.25MPa) is crimped, to make sample for evaluation.
Above-mentioned sample is placed 30 minutes in the environment of room temperature (23 DEG C), then use universal cupping machine so that
The mode that peel angle is 180 °, tensile speed is 30m/ minutes is removed, as " initial bonding force " (N/25mm) into
Measurement is gone.
In addition, after above-mentioned sample is placed 1 day in the environment of 70 DEG C (after maturation process), with universal cupping machine
So that the mode that peel angle is 180 °, tensile speed is 30m/ minutes is removed, determines and " paste the bonding after preserving
Power " (N/25mm).Measurement carries out in the environment of 23 DEG C, 50%RH.
For above-mentioned initial bonding force, preferably 0.1N/25mm~7.0N/25mm, more preferably 0.1N/25mm
~5.0N/25mm, further preferably 0.1N/25mm~4.0N/25mm.If above-mentioned bonding force is within the above range, face
When stationarity, releasable it is excellent, therefore preferably.
For bonding force after being preserved as above-mentioned stickup, preferably 0.3N/25mm~10.0N/25mm, more preferably
0.3N/25mm~8.0N/25mm, further preferably 0.3N/25mm~4.0N/25mm.If above-mentioned bonding force is in above-mentioned model
In enclosing, even if can then inhibit the rising of bonding force if pasting after preservation, releasable is excellent, therefore preferably.
It should be noted that the abbreviation in table 1 is as follows.
＜ crosslinking agents (B) ＞
C/L：Trimethylolpropane/toluene di-isocyanate(TDI) (manufacture of Tosoh company, trade name " Coronate L ")
C/HX：Isocyanuric acid ester-formin (manufacture of Tosoh company, the trade name " Coronate of hexamethylene diisocyanate
HX”)
＜ tin catalysts (C) and iron catalyst (D) ＞
OL-1：Tin dilaurate dioctyl tin (manufacture of Tokyo Fine Chemical companies, trade name " EMBILIZER OL-
1”)
Nacem Fe(III)：Three (acetyl acetone) iron (manufacture of chemistry industry companies of Japan, trade name " Nacem Fe
(III)”)
Table 1
Table 2
It is able to confirm that by table 2：In whole embodiments, the working life long enough of adhesive composition, even if viscous
After the rigid curing process of mixture composite (after being dried after just making) and after maturation process, the isocyanic acid based on catalyst
The reactivity of ester group is also high, additionally it is possible to confirm：The adhesive phase of highly crosslinkable (degree of cross linking) is obtained, even if by adhesive
In the case that layer is pasted after preservation, it can also inhibit the rising of bonding force, releasable excellent, additionally it is possible to prevent the color of adhesive phase
Modulation can be checked in the state of being pasted on optical component.
On the other hand, it is confirmed by table 2：In comparative example 1, due to unmated iron catalyst (D), rigid curing process
The bridging property (after drying process) (degree of cross linking) is insufficient afterwards, and the reactivity of the isocyanate group based on catalyst is low, with crosslinking
The reaction of agent (B) does not carry out fully.In addition, in comparative example 2, due to more than the amount of specified amount cooperation tin catalyst (C), and
And unmated iron catalyst (D), therefore it is short to confirm cross-linking reaction and working life of the progress in binder solution.In addition,
In comparative example 3, due to unmated tin catalyst (C), confirm：After room temperature curing carry out isocyanate crosslinking with
The bonding force height after preserving is pasted in the reaction of adherend, and bonding force rises preventing property and releasable is poor.In comparative example 4, by
In mismatching tin catalyst (C) and more than the amount of specified amount cooperation iron catalyst (D), therefore to confirm：With by becoming red
The relevant b values of tone variations caused by the iron catalyst of the coloration reason of color are very high, without the table as optical component
The level of surface protective film and practical application.
Claims (7)
1. a kind of adhesive composition, which is characterized in that relative to 100 mass of polymer (A) containing active hydrogen functional group
Part, what described adhesive composition contained the mass parts of isocyanates crosslinking agent (B), 0.001 mass parts~0.4 is activity with tin
The mass parts of the compound (C) at center and 0.001 mass parts~0.4 using iron as the compound (D) in activated centre.
2. adhesive composition as described in claim 1, which is characterized in that it is described containing active hydrogen functional group be hydroxyl and/or
Carboxyl.
3. adhesive composition as described in claim 1, which is characterized in that relative to 100 mass parts of the polymer (A),
Described adhesive composition contains the crosslinking agent (B) of the mass parts of 0.1 mass parts~20.
4. adhesive composition according to any one of claims 1 to 3, which is characterized in that the polymer (A) contains choosing
At least one of the group that free acrylic polymer, polyurethane polymer and polysiloxane type polymers are constituted.
5. a kind of adhesive phase, which is characterized in that described adhesive layer is by according to any one of claims 1 to 4 will glue
Mixture composite crosslinking obtains.
6. a kind of surface protection film, which is characterized in that the surface protection film forms right by at least one side in supporter
It is required that adhesive phase described in 5 and obtain.
7. a kind of optical component, which is characterized in that the optical component is protected by the surface protection film described in claim 6.
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| KR102256785B1 (en) * | 2018-12-05 | 2021-05-27 | 주식회사 엘지화학 | Adhesive composition, surface protective film and method for manufacturing organic light emitting electronic device |
| JP7310582B2 (en) * | 2019-12-09 | 2023-07-19 | 日本カーバイド工業株式会社 | PSA COMPOSITION FOR FOLDABLE DISPLAY AND OPTICAL MEMBER FOR FOLDABLE DISPLAY |
| KR20230042457A (en) * | 2020-08-03 | 2023-03-28 | 닛토덴코 가부시키가이샤 | An image display device including an optical laminate and an optical film of the optical laminate |
| WO2022255210A1 (en) | 2021-05-31 | 2022-12-08 | 日東電工株式会社 | Adhesive agent composition, adhesive agent, and surface protection film |
| JP7173384B1 (en) | 2022-02-18 | 2022-11-16 | 王子ホールディングス株式会社 | Double-sided pressure-sensitive adhesive sheet, laminate, and method for producing laminate |
| WO2023157875A1 (en) * | 2022-02-18 | 2023-08-24 | 王子ホールディングス株式会社 | Double-sided adhesive sheet, laminate, and method for manufacturing laminate |
| JP7173383B1 (en) | 2022-02-18 | 2022-11-16 | 王子ホールディングス株式会社 | Double-sided pressure-sensitive adhesive sheet, laminate, and method for producing laminate |
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| KR20180090734A (en) | 2018-08-13 |
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