CN103305158A - Adhesive composition and surface-protective adhesive film - Google Patents

Adhesive composition and surface-protective adhesive film Download PDF

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Publication number
CN103305158A
CN103305158A CN2013100687851A CN201310068785A CN103305158A CN 103305158 A CN103305158 A CN 103305158A CN 2013100687851 A CN2013100687851 A CN 2013100687851A CN 201310068785 A CN201310068785 A CN 201310068785A CN 103305158 A CN103305158 A CN 103305158A
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methyl
mentioned
binder composition
acrylate
hydroxyl
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CN2013100687851A
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CN103305158B (en
Inventor
长仓毅
岛口龙介
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Fujimori Kogyo Co Ltd
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Fujimori Kogyo Co Ltd
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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
    • 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
    • C09J7/22—Plastics; Metallised plastics
    • 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
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • 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
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • 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
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
    • 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
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Polarising Elements (AREA)
  • Laminated Bodies (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The invention provides an adhesive composition and a surface-protective adhesive film, which have excellent adhesive balance, durability and rework performance during peeling in high speed and low speed. The adhesive composition contains A acrylate monomer (methyl) containing alkyl carbons of C4-C10, (B) comonomer containing hydroxyl, (C) comonomer containing carboxyl and (D) acrylic polymer of copolymer of poly alkylene glycol single (meth) acrylate monomer. The adhesive composition further contains (E) over three-functional isocyanate compound, (F) crosslinking inhibitor, (G) Crosslinking catalyst and (H) polyether modified siloxane compound, wherein the acid value of the acrylic polymer ranges from 0.01-8.0.

Description

Binder composition and surface protection film
Technical field
The present invention relates to the surface protection film that uses in the manufacturing process of liquid-crystal display.More specifically; the present invention relates to be fitted on the surface of optics of the Polarizer that consists of liquid-crystal display, polarizer etc., the surface protection film binder composition on the surface of the optics of protection Polarizer, polarizer etc., and the surface protection film that uses it.
Background technology
All the time, in the manufacturing process for the optics of the Polarizer of the parts that consist of liquid-crystal display, polarizer etc., at the temporary transient coating surface protective membrane in the surface of optics.When optics is assembled into liquid-crystal display, surface protection film is peeled off and removed from optics.For the surface protection film of protecting optical component surfaces only uses in manufacturing process.Therefore, usually, be also referred to as the operation film.
The surface protection film that uses in the operation of making optics forms binder layer in the one side with the polyethylene terephthalate of optical transparence (PET) resin molding.In addition, until fit in before the optics, will fit in for the stripping film that is stripped from processing of protecting this binder layer binder layer above.
And; because the optics of Polarizer, polarizer etc.; be fitted with under the state of surface protection film; carry out the examination and test of products of the optical assessment that display capabilities, colourity, contrast gradient, impurity with LCD panel sneaks into etc.; therefore; performance for surface protection film necessity is non-cohesive bubble or impurity in binder layer.
And, when making surface protection film fit in the optics of Polarizer, polarizer etc., because a variety of causes, temporary transient stripper surface protective membrane is arranged, again the situation of adhesive surface protective membrane again.At this moment require easily peel off (the having doing over again property (リ ワ ー Network) from the optics of adherend) surface protection film.
And during from the optics stripper surface protective membrane of Polarizer, polarizer etc., requirement can be peeled off rapidly.That is, in order to peel off also and can to peel off rapidly by high speed, the impact that requires bounding force to be subject to peeling rate is few.
Like this; in recent years; as the performance that requires for the binder layer that consists of surface protection film; easy-to-use point during from the use surface protection film; require (1) obtain that low speed is peeled off and peel off at a high speed in bonding equilibrium of forces; (2) can prevent the generation of adhesive residue, and (3) has the performance of doing over again etc.
Yet although can satisfy the respectively independent performance that requires of these (1)～(3), all that are very difficult to possess simultaneously desired in the binder layer of surface protection film (1)～(3) require performance.
For example, obtain about (1) that low speed is peeled off and peel off at a high speed in bonding equilibrium of forces; (2) can prevent the generation of adhesive residue, known have a following motion.
Take have carbonatoms at the multipolymer of (methyl) alkyl acrylate of the alkyl below 7 and the copolymerization compound that contains carboxyl as main component, the acrylic adhesives of its crosslinking Treatment being made with linking agent, if process is long-time after fitting, then have tackiness agent to adherend one side shifting, and to the bounding force of adherend through the time problem that rises.In order to prevent that this problem from producing, known following tackiness agent (pressure sensitive adhesive): described tackiness agent uses has (methyl) alkyl acrylate and the multipolymer with copolymerization compound of alcohol hydroxyl group that carbonatoms is 8～10 alkyl, its crosslinking Treatment is obtained (patent documentation 1) with linking agent.
And propose following tackiness agent etc.: described tackiness agent is by mixing on a small quantity (methyl) alkyl acrylate and the multipolymer that contains the copolymerization compound of carboxyl in above-mentioned same multipolymer, with the processing of linking agent cross-linking and obtain.But, when in the surface protection of using it for the low ganoid plastic plate of surface tension etc., have owing to adding man-hour or the thermogenesis that adds when preserving is floated the problem of the peeling that waits or manually peel off high speed the poor problem of releasable when peeling off.
In order to address these problems, binder composition is proposed, described binder composition by to (a) 100 weight parts take (methyl) alkyl acrylate with carbonatoms alkyl as 8～10 in (methyl) alkyl acrylate of main component, add (b) 1～15 weight part the copolymerization compound that contains carboxyl and, (c) carbonatoms of 3～100 weight parts is the multipolymer that the vinyl ester of 1～5 aliphatic carboxylic acid obtains monomer mixture, and the linking agent that is mixed into carboxyl with respect to above-mentioned (b) composition in this multipolymer and is more than the equivalent obtains (patent documentation 2).
The binder composition of record in the patent documentation 2, be not created in add man-hour or when preserving etc. in the peeling of floating etc., and bounding force through the time rise also little, releasable is outstanding, even the prolonged preservation under prolonged preservation, the particularly high-temperature atmosphere also can be peeled off with little power again, at this moment, on adherend, not producing adhesive residue, and, also can peel off again with little power when peeling off at a high speed carrying out.
And, has the performance of doing over again about (3), binder composition is for example proposed, described binder composition by take for acrylic resin 100 weight parts as 0.0001～10 weight part, the stiffening agent and the specific silicate oligopolymer that mix isocyanate ester compound in the acrylic resin obtain (patent documentation 3).
In patent documentation 3, take the alkyl carbon atoms number as about 2～12 alkyl acrylate, the alkyl carbon atoms number as about alkyl methacrylate of 4～12 etc. as the principal monomer composition, for example, can comprise monomer component monomer of containing carboxyl etc., that contain other functional group.Usually, preferably contain the above above-mentioned principal monomer of 50 % by weight, and the content that hope contains the monomer component of functional group is 0.001～50 % by weight, preferred 0.001～25 % by weight, more preferably 0.01～25 % by weight.Because even the binder composition of record is at high temperature or under hot and humid, the rheological parameters' change with time of cohesive force and bounding force also is little in such patent documentation 3, and, to also showing outstanding effect in the bounding force of curved surface, therefore have the property of doing over again.
Usually, if binder layer is made flexible proterties, then adhesive residue becomes and easily occurs, and doing over again property also easily reduces.That is, easily become and peel off difficulty, the difficulty of fitting again when fitting mistakenly.Therefore, need to have functional group monomer crosslinked on host of carboxyl etc., binder layer is made certain hardness, make it have the property of doing over again.
[prior art document]
[patent documentation]
The clear 63-225677 communique of [patent documentation 1] Japanese Patent Laid-Open
[patent documentation 2] Japanese patent laid-open 11-256111 communique
[patent documentation 3] Japanese patent laid-open 8-199130 communique
Summary of the invention
[problem that invention will solve]
In the prior art; as the performance that requires for the binder layer that consists of surface protection film; require: obtain that low speed is peeled off and peel off at a high speed in bonding equilibrium of forces and the performance etc. of doing over again; but; although can satisfy each, each require performance, can not satisfy the whole performances that require that require in the binder layer of surface protection film.
The present invention has used for reference above-mentioned situation.Problem of the present invention provides a kind of binder composition and surface protection film, and described binder composition and the surface protection film bonding equilibrium of forces in low speed is peeled off and peeled off at a high speed is excellent, and weather resistance and the also excellence of performance of doing over again.
[solving the method for problem]
In order to solve above-mentioned problem, the invention provides a kind of binder composition, it is by containing (methyl) acrylate monomer that (A) alkyl carbon atoms number is C4～C10, (B) contain the copolymerisable monomer of hydroxyl, (C) contain the copolymerisable monomer of carboxyl, (D) acrylic polymers of the multipolymer of polyalkylene glycol mono (methyl) acrylate monomer consists of, it further contains the above isocyanate compound of (E) 3 officials energy, (F) cross-linked inhibitor, (G) crosslinking catalyst, (H) polyether-modified silicone compounds, the acid number of described acrylic polymers is 0.01-8.0.
The copolymerisable monomer that above-mentioned (B) contains hydroxyl is for being selected from more than at least a in the compound group that is comprised of (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester, (methyl) vinylformic acid 2-hydroxy methacrylate, N-hydroxyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxyethyl (methyl) acrylamide; Preferably above-mentioned (A) alkyl carbon atoms number with respect to 100 weight parts is (methyl) acrylate monomer of C4～C10, above-mentioned (B) that contain 0.1～5.0 weight part contains the copolymerisable monomer of hydroxyl, and, described (B) contains in the copolymerisable monomer of hydroxyl, and total amount of (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester is 0～0.9 weight part.
Above-mentioned (C) contains the copolymerisable monomer of carboxyl for being selected from by (methyl) vinylformic acid, propyloic (methyl) acrylate, carboxylic amyl group (methyl) acrylate, 2-(methyl) acryloxy ethyl hexahydrophthalic acid, 2-(methyl) acryloxy propyl group hexahydrophthalic acid, 2-(methyl) acryloxy ethyl phthalic acid, 2-(methyl) acryloxy ethyl succsinic acid, 2-(methyl) acryloxy ethyl toxilic acid, carboxyl polycaprolactone list (methyl) acrylate, more than at least a in the compound group that 2-(methyl) acryloxy ethyl tetrahydrochysene phthalic acid forms; Preferably the carbonatoms with respect to above-mentioned (A) alkyl of 100 weight parts is (methyl) acrylate monomer of C4～C10, and above-mentioned (C) that contain 0.35～1.0 weight part contains the copolymerisable monomer of carboxyl.
Above-mentioned (D) polyalkylene glycol mono (methyl) acrylate monomer is for being selected from more than at least a in polyalkylene glycol mono (methyl) acrylate, methoxyl group polyalkylene glycol (methyl) acrylate, oxyethyl group polyalkylene glycol (methyl) acrylate; Preferably the carbonatoms with respect to above-mentioned (A) alkyl of 100 weight parts is (methyl) acrylate monomer of C4～C10, contains above-mentioned (D) polyalkylene glycol mono (methyl) acrylate monomer of 1～20 weight part.
Above-mentioned (E) 3 officials can above isocyanate compound be more than at least a in the compound group that forms of the biuret body of biuret body, the isophorone diisocyanate compound of adduction object, the hexamethylene diisocyanate compound of adduction object, the isophorone diisocyanate compound of isocyanuric acid ester body, the hexamethylene diisocyanate compound of the isocyanuric acid ester body that is selected from the hexamethylene diisocyanate compound, isophorone diisocyanate compound; Preferably with respect to the above-mentioned multipolymer of 100 weight parts, above-mentioned (E) 3 officials of containing 0.5～5.0 weight part can above isocyanate compound.
Above-mentioned (H) polyether-modified silicone compounds is that the HLB value is 7～12 polyether-modified silicone compounds, preferably with respect to the above-mentioned multipolymer of 100 weight parts, contain above-mentioned (H) polyether-modified silicone compounds of 0.01～0.5 weight part.
Above-mentioned (F) cross-linked inhibitor is the keto-enol tautomerism compound, preferably with respect to the above-mentioned multipolymer of 100 weight parts, contains above-mentioned (F) cross-linked inhibitor of 1.0～5.0 weight parts.
Above-mentioned (G) crosslinking catalyst is organo-tin compound, preferably with respect to the above-mentioned multipolymer of 100 weight parts, contains above-mentioned (G) crosslinking catalyst of 0.01～0.5 weight part.
Preferably, so that the bounding force of the binder layer that above-mentioned binder composition cross-links forms under low speed peeling rate 0.3m/min is 0.05～0.1N/25mm, the bounding force under high speed peeling rate 30m/min is below the 1.0N/25mm.
In addition, the invention provides a kind of bonding film, it is characterized in that what its binder layer that above-mentioned binder composition cross-links is formed for the one or both sides at resin molding form obtained.
And; the invention provides a kind of surface protection film; it is characterized in that it forms the surface protection film that binder layer obtains for the one side at resin molding; described binder layer is by obtaining above-mentioned binder composition cross-links;, after describing via the surface protection film of described binder layer, do not transfer the pollution to adherend with ballpoint pen.
Above-mentioned surface protection film, it can use as the purposes of the surface protection film of Polarizer.
Preferably on the face opposite with described binder layer formation side of above-mentioned resin molding, carry out antistatic and anti-pollution processing.
[invention effect]
According to the present invention, can satisfy in the prior art indeterminable in the binder layer of surface protection film needed over-all properties.In addition, can also obtain the excellent performance that prevents adhesive residue.Specifically, can further improve the performance that prevents adhesive residue.
Embodiment
Below, based on the present invention preferred embodiment is described.
Binder composition of the present invention is, its host is C4～C10 (methyl) acrylate monomer by containing (A) alkyl carbon atoms number, (B) contain the copolymerisable monomer of hydroxyl, (C) contain the copolymerisable monomer of carboxyl, (D) acrylic polymers of the multipolymer of polyalkylene glycol mono (methyl) acrylate monomer consists of, it further contains the above isocyanate compound of (E) 3 officials energy, (F) cross-linked inhibitor, (G) crosslinking catalyst, (H) polyether-modified silicone compounds, the acid number of described acrylic polymers is 0.01-8.0.
Be that (methyl) acrylate monomer of C4～C10 can be enumerated as (A) alkyl carbon atoms number:
(methyl) butyl acrylate, (methyl) isobutyl acrylate, (methyl) vinylformic acid pentyl ester, (methyl) Ethyl acrylate, (methyl) vinylformic acid heptyl ester, (methyl) Octyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) 2-EHA, (methyl) vinylformic acid ester in the ninth of the ten Heavenly Stems, (methyl) vinylformic acid ester in the different ninth of the ten Heavenly Stems, (methyl) decyl acrylate etc.
The copolymerisable monomer that contains hydroxyl as (B) can be enumerated: (methyl) vinylformic acid hydroxyalkyl acrylate class of (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester, (methyl) vinylformic acid 2-hydroxy methacrylate etc., (methyl) acrylic amide that contains hydroxyl of N-hydroxyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxyethyl (methyl) acrylamide etc. etc.
Preferably, be selected from more than at least a in the compound group that (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester, (methyl) vinylformic acid 2-hydroxy methacrylate, N-hydroxyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxyethyl (methyl) acrylamide form.
Above-mentioned (A) alkyl carbon atoms number with respect to 100 weight parts is (methyl) acrylate monomer of C4～C10, and above-mentioned (B) that preferably contain 0.1～5.0 weight part contains the copolymerisable monomer of hydroxyl.
And, contain in the copolymerisable monomer of hydroxyl at (B), total amount of (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester is preferred less than 1 weight part (allows situation about not containing), preferred 0～0.9 weight part.
Preferably (C) contains the copolymerisable monomer of carboxyl for being selected from (methyl) vinylformic acid, propyloic (methyl) acrylate, carboxylic amyl group (methyl) acrylate, 2-(methyl) acryloxy ethyl hexahydrophthalic acid, 2-(methyl) acryloxy propyl group hexahydrophthalic acid, 2-(methyl) acryloxy ethyl phthalic acid, carboxyl polycaprolactone list (methyl) acrylate, more than at least a in the compound group that 2-(methyl) acryloxy ethyl tetrahydrophthalic acid forms.
Carbonatoms with respect to (A) alkyl of 100 weight parts is (methyl) acrylate monomer of C4～C10, and (C) that preferably contain 0.35～1.0 weight part contains the copolymerisable monomer of carboxyl, more preferably contains 0.35～0.6 weight part.
As (D) polyalkylene glycol mono (methyl) acrylate monomer, can be in a plurality of hydroxyls that polyalkylene glycol has, hydroxyl as (methyl) acrylate esterified compound.Because therefore (methyl) acrylate-based polymerizable group that becomes can be copolymerized to the host polymkeric substance.Other hydroxyl both can keep OH constant, also can become the alkyl oxides such as methyl ether or ether, perhaps saturated carboxylic acid ester such as acetic ester etc.
As the alkylidene group that polyalkylene glycol has, can enumerate ethylidene, propylidene, butylidene etc., this is infinite.Polyalkylene glycol also can be the multipolymer of the polyalkylene glycol more than 2 kinds of poly-ethylidene glycol, polytrimethylene glycol, polybutylene glycol etc.Multipolymer as polyalkylene glycol, can enumerate poly-ethylidene glycol-polytrimethylene glycol, poly-ethylidene glycol-polybutylene glycol, polytrimethylene glycol-polybutylene glycol, poly-ethylidene glycol-polytrimethylene glycol-polybutylene glycol etc., this multipolymer can be segmented copolymer, random copolymers.
As (D) polyalkylene glycol mono (methyl) acrylate monomer, be preferably and be selected from more than at least a in polyalkylene glycol mono (methyl) acrylate, methoxyl group polyalkylene glycol (methyl) acrylate, oxyethyl group polyalkylene glycol (methyl) acrylate.
More specifically, can enumerate poly-ethylidene glycol-list (methyl) acrylate, polytrimethylene glycol-list (methyl) acrylate, polybutylene glycol-list (methyl) acrylate, poly-ethylidene glycol-polytrimethylene glycol-list (methyl) acrylate, poly-ethylidene glycol-polybutylene glycol-list (methyl) acrylate, polytrimethylene glycol-polybutylene glycol-list (methyl) acrylate, poly-ethylidene glycol-polytrimethylene glycol-polybutylene glycol-list (methyl) acrylate; Methoxyl group gathers ethylidene glycol-(methyl) acrylate, methoxyl group polytrimethylene glycol-(methyl) acrylate, methoxyl group polybutylene glycol-(methyl) acrylate, methoxyl group-poly-ethylidene glycol-polytrimethylene glycol-(methyl) acrylate, methoxyl group-poly-ethylidene glycol-polybutylene glycol-(methyl) acrylate, methoxyl group-polytrimethylene glycol-polybutylene glycol-(methyl) acrylate, methoxyl group-poly-ethylidene glycol-polytrimethylene glycol-polybutylene glycol-(methyl) acrylate; Oxyethyl group gathers ethylidene glycol-(methyl) acrylate, oxyethyl group polytrimethylene glycol-(methyl) acrylate, oxyethyl group polybutylene glycol-(methyl) acrylate, oxyethyl group-poly-ethylidene glycol-polytrimethylene glycol-(methyl) acrylate, oxyethyl group-poly-ethylidene glycol-polybutylene glycol-(methyl) acrylate, oxyethyl group-polytrimethylene glycol-polybutylene glycol-(methyl) acrylate, oxyethyl group-poly-ethylidene glycol-polytrimethylene glycol-polybutylene glycol-(methyl) acrylate etc.
Preferably the carbonatoms with respect to above-mentioned (A) alkyl of 100 weight parts is (methyl) acrylate monomer of C4～C10, contains above-mentioned (D) polyalkylene glycol mono (methyl) acrylate monomer of 1～20 weight part.
As the above isocyanate compound of (E) 3 officials energy, the polyisocyanate compound that has at least 3 above isocyanic ester (NCO) base in 1 molecule gets final product, and can enumerate: hexamethylene diisocyanate, isophorone diisocyanate, diphenylmethanediisocyanate, the toluylene group diisocyanate, biuret modified body or the isocyanurate-modified body of the diisocyanates of xylylene diisocyanate etc. (compound that has 2 NCO bases in 1 molecule), the adduction object (polyalcohol modified body) of the polyvalent alcohol (compound that has the OH base more than at least 3 in 1 molecule) that 3 valencys of TriMethylolPropane(TMP) or glycerine etc. are above etc.
(E) 3 officials can above isocyanate compound be the polyisocyanate compounds that has at least isocyanic ester (NCO) base more than 3 in 1 molecule, are preferably selected from especially the isocyanuric acid ester body of hexamethylene diisocyanate compound, the isocyanuric acid ester body of isophorone diisocyanate compound, the adduction object of hexamethylene diisocyanate compound, the adduction object of isophorone diisocyanate compound, the biuret body of hexamethylene diisocyanate compound, more than at least a in the compound group that the biuret body of isophorone diisocyanate compound forms.With respect to the multipolymer of 100 weight parts, (E) 3 officials of preferably containing 0.5～5.0 weight part can above isocyanate compound.
As (F) cross-linked inhibitor, can enumerate: the 'beta '-ketoester of methyl acetoacetate, methyl aceto acetate, etheric acid monooctyl ester, etheric acid oil base ester, etheric acid lauryl, etheric acid stearyl ester etc., methyl ethyl diketone, 2, the beta-diketon of 4-hexanedione, benzoyl acetone etc.These are keto-enol tautomerism compounds, in the binder composition take polyisocyanate compound as linking agent, by the isocyanate group sealing that linking agent is had, can suppress excessive viscosity rise or gelation that linking agent mixes rear binder composition, prolong the storage period of binder composition.
(F) cross-linked inhibitor is preferably the keto-enol tautomerism compound, is preferably especially to be selected from more than at least a in the compound group that methyl ethyl diketone, methyl aceto acetate form.
With respect to the multipolymer of 100 weight parts, preferably contain (F) cross-linked inhibitor of 1.0～5.0 weight parts.
In the situation take polyisocyanate compound as linking agent, (G) crosslinking catalyst gets final product for the catalyzer of material bring into play function as to(for) the reaction (crosslinking reaction) of above-mentioned multipolymer and linking agent, can enumerate: the organometallic compound of the aminated compounds of tertiary amine etc., organo-tin compound, organo-lead compound, organic zinc compound etc. etc.
Can enumerate as tertiary amine: trialkylamine, N, N, N ', N '-tetraalkyl diamines, N, N-dialkyl amido alcohol, triethylenediamine, morpholine derivative, bridged piperazine derivatives etc.
As organo-tin compound, can enumerate: the soap of dialkyl tin oxide, dialkyl tin, the soap of inferior tin etc.
(G) crosslinking catalyst preferably has machine tin compound, is preferably especially to be selected from more than at least a in the compound group that di-n-octyltin oxide, two lauric acid dioctyl tins form.
With respect to the multipolymer of 100 weight parts, preferably contain (G) crosslinking catalyst of 0.01～0.5 weight part.
(H) polyether-modified silicone compounds is the silicone compounds with polyether-based, except the siloxane unit (SiR of routine 1 2-O-), also have the siloxane unit (SiR with polyether-based 1(R 2O (R 3O) nR 4)-O-).Herein, R 1Represent one kind or two or more alkyl or aryl, R 2And R 3Represent one kind or two or more alkylidene group, R 4Represent (terminal group) such as one kind or two or more alkyl, acyl groups.Can enumerate as polyether-based: polyoxyethylene thiazolinyl ((C 2H 4O) n) or polyoxytrimethylene base ((C 3H 6O) n) etc. polyoxyalkylene.
Preferably (H) polyether-modified silicone compounds is that the HLB value is 7～12 polyether-modified silicone compounds.In addition, with respect to the multipolymer of 100 weight parts, preferably contain above-mentioned (H) polyether-modified silicone compounds of 0.01～0.5 weight part.0.1～0.5 weight part more preferably.
So-called HLB is, such as the hydrophilic-lipophilic balance (wetting ability and oil loving ratio) of the middle regulations such as JIS K3211 (tensio-active agent term).
Polyether-modified silicone compounds is for example, for the organopolysiloxane main chain with silylation, can the organic compound grafting with unsaturated link(age) and polyoxyalkylene be obtained by hydrosilylation reactions.Can enumerate particularly: dimethyl siloxane methyl (polyoxyethylene) silicone copolymers, dimethyl siloxane methyl (polyoxyethylene) siloxanes methyl (polyoxytrimethylene) silicone copolymers, dimethyl siloxane methyl (polyoxytrimethylene) silicone copolymers etc.
By (H) polyether-modified silicone compounds is mixed into binder composition, can improve the bounding force of tackiness agent and the performance of doing over again.
Moreover, as other composition, but can suitably mix the known additive of acrylamide monomer that copolymerization (methyl) acrylic monomer that contains olefin oxide, (methyl) acrylamide monomer, dialkyl group replace, tensio-active agent, hardening accelerator, softening agent, weighting agent, sclerosis inhibitor, processing aid, antiaging agent, antioxidant, static inhibitor etc.These can separately or merge use more than 2 kinds.
As static inhibitor, can enumerate ionic compound.And, can give antistatic property by making ionic acrylic monomer copolymerization in the multipolymer of host.
The multipolymer of the host of using in the binder composition of the present invention can as (methyl) acrylate monomer of C4～C10 and (B) contain the copolymerisable monomer of hydroxyl and (C) contain the copolymerisable monomer of carboxyl and (D) polyalkylene glycol mono (methyl) acrylate monomer is synthetic by polymerization (A) alkyl carbon atoms number.There is no particular limitation for the polymerization process of multipolymer, can use the suitable polymerization processs such as solution polymerization, letex polymerization.
By in above-mentioned multipolymer, mix (E) 3 officials can more than the polyether-modified silicone compounds of isocyanate compound, (F) cross-linked inhibitor, (G) crosslinking catalyst, (H), suitable additive arbitrarily further, can prepare binder composition of the present invention.
Above-mentioned multipolymer is preferably acrylic polymers, preferably contains the acrylic monomer of (methyl) acrylate monomer, (methyl) vinylformic acid, (methyl) acrylic amide etc. of 50～100 % by weight.
In addition, the acid number of acrylic polymers is preferably 0.01～8.0.By this acid number, can improve contaminative, improve the performance that prevents that adhesive residue from occuring.
Herein, " acid number " refers to one of index of the sour amount of expression, expression in and 1g contain the mg number of the required potassium hydroxide of the polymkeric substance of carboxyl.
Preferred so that the bounding force of the binder layer that above-mentioned binder composition cross-links forms under low speed peeling rate 0.3m/min is 0.05～0.1N/25mm, the bounding force under high speed peeling rate 30m/min is below the 1.0N/25mm.Thus, can access bounding force along with peeling rate performance with low uncertainty, even through peeling off at a high speed, promptly peeling off also becomes possibility.And, in order again to fit, during temporary transient stripper surface protective membrane, do not need excessive power, peel off easily from adherend.
So that the gel fraction preferred 95～100% of the binder layer that binder composition cross-links of the present invention forms (tackiness agent after crosslinked).Like this, because gel fraction is high, can make the bounding force under the low speed peeling rate not become excessive, reduce from the stripping of unconverted monomer or the oligomer of multipolymer, improve doing over again property, the weather resistance in hot and humid, suppress the pollution of adherend.
Bonding film of the present invention is so that the binder layer that binder composition cross-links of the present invention forms forms at the one or both sides of resin molding.In addition, the surface protection film of the present invention surface protection film that to be binder layer that crosslinked binder composition cross-links of the present invention is formed form in the one side of resin molding.Binder composition of the present invention is because so that the good balance mixing of each composition of above-mentioned (A)～(H); has bonding equilibrium of forces excellence under low speed peeling rate and high speed peeling rate; and weather resistance and the performance of doing over again (after describing via the surface protection film of described binder layer, not transferring the pollution to adherend with ballpoint pen) are also excellent.Therefore, can suitably use as the purposes of the surface protection film of Polarizer.
Can use the resin molding of polyester film etc. etc. as the stripping film (partition) of the base material film of binder layer, protection adhesive face.
In base material film, on the face opposite with forming the binder layer side of resin molding, can implement the antifouling processing by releasing agent or coating-forming agent, the silicon dioxide microparticle etc. of silicone, fluorine class; The anti-electrostatic of the coating by antistatic agent or kneading etc. is processed.
In stripping film, on binder layer and the face adhesive face adhesive side, implement the demoulding of the releasing agent etc. by silicone, fluorine class and process.
Embodiment
Below, based on embodiment, specify the present invention.
The preparation of＜acrylic copolymer＞
[embodiment 1]
In the reaction unit that is equipped with agitator, thermometer, reflux exchanger and nitrogen ingress pipe, import nitrogen, with the air nitrogen replacement in the reaction unit.Then, in reaction unit, add 2-EHA 100 weight parts, vinylformic acid 8-hydroxyl monooctyl ester 0.9 weight part, vinylformic acid 0.5 weight part, poly-ethylidene glycol mono acrylic ester 3 weight parts and solvent (ethyl acetate) 60 weight parts.Then, through Diisopropyl azodicarboxylate 0.1 weight part that splashed into as polymerization starter in 2 hours, make its reaction 6 hours in 65 ℃, obtain weight-average molecular weight and be the acrylic copolymer solution 1 that uses among 500,000 the embodiment 1.Extract the part of acrylic copolymer, as the sample of following determination of acid value.
[embodiment 2～9 and comparative example 1～9]
Such setting of the composition of monomer each (A) according to table 1～(D) put down in writing, in addition, according to above-described embodiment 1 in the acrylic copolymer solution 1 that uses similarly, obtain the acrylic copolymer solution that uses in embodiment 2～9 and the comparative example 1～9.
The preparation of＜binder composition and surface protection film＞
[embodiment 1]
According to as mentioned above, acrylic copolymer solution 1 (wherein acrylic copolymer is 100 weight parts) for preparation, after adding KF-351A (the polyether-modified silicone compounds of HLB=12) 0.1 weight part, methyl ethyl diketone 2.5 weight parts and stirring, mix after adding コ ロ ネ ー ト HX (the isocyanuric acid ester body of hexamethylene diisocyanate compound) 1.5 weight parts, two lauric acid dioctyl tins, 0.02 weight part, obtain the binder composition of embodiment 1.After coating this binder composition on the stripping film that polyethylene terephthalate (PET) film of silicone coating consists of, by in 90 ℃ dry desolventizing, the thickness that obtains binder layer is the adhesive sheet of 25 μ m.
Then; adhesive sheet is transferred to the reverse side through anti-electrostatic and antifouling treated side of upper polyethylene terephthalate (PET) film through anti-electrostatic and antifouling processing of one side, is had the surface protection film of embodiment 1 of the laminar structure of " through the PET of anti-electrostatic and antifouling processing film/binder layer/stripping film (the PET film of silicone coating) ".
[embodiment 2～9 and comparative example 1～9]
The composition of additive each (E)～(H) such as table 1 is set putting down in writing, in addition, according to the surface protection film of above-described embodiment 1 similarly, obtain embodiment 2～9 and 1～9 surface protection film relatively.
In the table 1, the blending ratio of each composition encloses with bracket, and expression is take the summation of (A) group as the numerical value of the desired weight part of 100 weight parts.And, the compound title of the abbreviation correspondence of each composition that uses in the indicator gauge 1 in the table 2.In addition, コ ロ ネ ー ト (registered trademark) HX and same HL are the trade(brand)names of Japanese Port リ ウ レ タ Application Industrial Co., Ltd, タ ケ ネ ー ト (registered trademark) D-140N is the trade(brand)name of Mitsui Chemicals, Inc, デ ュ ラ ネ ー ト (registered trademark) 24A-100 is the trade(brand)name of the ケ ミ カ of Asahi Chemical Industry Le ズ Co., Ltd., and KF-351A, KF-352A, KF-353, KF-640 and X-22-6191 are the trade(brand)names of KCC of SHIN-ETSU HANTOTAI.
[table 1]
Figure BDA00002883853600121
Figure BDA00002883853600131
[table 2]
Figure BDA00002883853600132
Figure BDA00002883853600141
＜test method and evaluation＞
Surface protection film in embodiment 1～9 and the comparative example 1～9 after under 23 ℃, the atmosphere of 50%RH aging 7 days, is peeled off stripping film (the PET film of silicone coating), with the material that the exposes binder layer specimen as gel fraction.
And then; via binder layer this surface protection film that exposes binder layer is fitted in the surface that sticks on the Polarizer on the liquid crystal cell; place after 1 day; process, further placed 12 hours in room temperature through 50 ℃, 5 normal atmosphere, 20 minutes autoclave, will be through the specimen of the above material that obtains as bounding force and weather resistance.
＜acid number 〉
The acid number of acrylic polymers, with sample dissolution in solvent (material that diethyl ether and ethanol are mixed to get with volume ratio 2:1), use potential difference automatic titration device (capital of a country electronic industry system, AT-610), use 0.1 above-mentioned potential difference titration apparatus, be that the potassium hydroxide-ethanol solution of approximately 0.1mol/l carries out the potential difference titration with concentration, measure in and the amount of the required potassium hydroxide-ethanol solution of sample.Then, try to achieve acid number by following formula.
Acid number=(B * f * 5.611)/S
The amount (ml) of the 0.1mol/l potassium hydroxide-ethanol solution that uses in the B=titration
The factor of f=0.1mol/l potassium hydroxide-ethanol solution
The quality of the solids component of S=sample (g)
＜gel fraction＞
Behind aging the end, correctly measure the quality that fits in the front specimen of Polarizer, in toluene, soak after 24 hours, by 200 purpose metal mesh filters.Then, after 1 hour, correctly measure the quality of residue in 100 ℃ of dry filter things, calculate the gel fraction of binder layer (tackiness agent after crosslinked) from following formula.
Gel fraction (%)=insolubles quality (g)/tackiness agent quality (g) * 100
＜bounding force＞
With following stripping strength as bounding force: use tension testing machine to peel off stripping strength by specimen obtained above (at the material of the wide surface protection film of Polarizer surface applying 25mm) mensuration with the peeling rate (0.3m/min) of low speed and peeling rate (30m/min) at a high speed to 180 ° of directions.
＜doing over again property＞
After describing by the surface protection film of specimen obtained above, observe Polarizer surface from Polarizer stripper surface protective membrane with ballpoint pen (load 500g, reciprocal 3 times), confirm not transfer the pollution to Polarizer.The evaluation objective benchmark is " zero " for the average evaluation of not transferring the pollution to Polarizer, the average evaluation that the track that affirmation is described along ballpoint pen is transferred the pollution at least a portion is " Δ ", confirms to transfer the pollution, also have the average evaluation of tackiness agent disengaging to be " * " from adhesive surface along the track that ballpoint pen is described.
＜weather resistance＞
Under 60 ℃, 90%RH atmosphere, place and, in room temperature it taken out after 250 hours by specimen obtained above, place further 12 hours after, measure bounding force, the significantly increase of confirming to compare not with initial bounding force.The bounding force of evaluation objective benchmark after for test is that the average evaluation below 1.5 times of initial bounding force is " * " for " zero ", the average evaluation that surpasses 1.5 times.
Evaluation result is shown in Table 3.
[table 3]
Figure BDA00002883853600151
Figure BDA00002883853600161
The bounding force of the surface protection film of embodiment 1～9 under low speed peeling rate 0.3m/min is 0.05～0.1N/25mm; bounding force under high speed peeling rate 30m/min is below the 1.0N/25mm; with ballpoint pen after describing via the surface protection film of described binder layer; do not transfer the pollution to adherend, 60 ℃, the weather resistance the when atmosphere of 90%RH was placed in lower 250 hours also are outstanding.
That is, obtain bonding equilibrium of forces in low speed peeling rate and the high speed peeling rate about (1); (2) can prevent the generation of adhesive residue; (3) have the performance of doing over again, side by side satisfied whole performances that requires.
The surface protection film of comparative example 1 may be owing to not containing (D) polyalkylene glycol mono (methyl) acrylate monomer, and the bounding force under the low speed peeling rate 0.3m/min is low, and doing over again property is also slightly poor.
In the surface protection film of comparative example 2; may because (B) contain that the monomer of hydroxyl is very few, (D) polyalkylene glycol mono (methyl) acrylate monomer is very few, (E) isocyanate compound too much, the HLB value of (H) polyether-modified silicone compounds is too small, so the bounding force under the bounding force under the low speed peeling rate 0.3m/min and the high speed peeling rate 30m/min become excessive, doing over again property and weather resistance variation, gel fraction step-down.
In the surface protection film of comparative example 3; may be owing to the HLB value of the silicone compounds that the monomer that (B) contains hydroxyl is too much, (C) acidiferous monomer is too much, (D) polyalkylene glycol mono (methyl) acrylate monomer is too much, (I) is polyether-modified is excessive; therefore the acid number of acrylic polymers is high, and the bounding force under the low speed peeling rate 0.3m/min is low, doing over again property and poor durability.
In the surface protection film of comparative example 4; may since (C) contain the monomer of acid very few, do not contain (D) polyalkylene glycol mono (methyl) acrylate monomer; therefore the bounding force under the low speed peeling rate 0.3m/min is low, doing over again property and poor durability.
In the surface protection film of comparative example 5; may since the monomer that (B) contains hydroxyl too much, (C) contain acid monomer too much, (D) polyalkylene glycol mono (methyl) acrylate monomer is very few, (E) isocyanate compound is very few; therefore the acid number of acrylic polymers is high, and that the bounding force under the bounding force under the low speed peeling rate 0.3m/min and the high speed peeling rate 30m/min becomes is excessive, doing over again property and weather resistance variation, gel fraction step-down.
The surface protection film of comparative example 6 may be owing to not mixing (F) cross-linked inhibitor, so too shortens storage period, carries out crosslinked before coating and can not apply.
The surface protection film of comparative example 7 may be since contain the MA that in (A) has (methyl) acrylate monomer of alkyl, has the C1 alkyl, monomer that (B) contains hydroxyl too much, do not contain (D) polyalkylene glycol mono (methyl) acrylate monomer, do not mix (G) crosslinking catalyst, so the bounding force under the bounding force under the low speed peeling rate 0.3m/min and the high speed peeling rate 30m/min is excessive, doing over again property and poor durability.
In the surface protection film of comparative example 8; may since (D) polyalkylene glycol mono (methyl) acrylate monomer too much, not have mixing (H) polyether-modified silicone compounds, so the bounding force under the bounding force under the low speed peeling rate 0.3m/min and the high speed peeling rate 30m/min is excessive, doing over again property is slightly poor.
In the surface protection film of comparative example 9; may be because not contain the polyether-modified silicone compounds of (D) polyalkylene glycol mono (methyl) acrylate monomer, (H) too much, so the bounding force under the low speed peeling rate 0.3m/min is low, doing over again property is slightly poor, poor durability.
Like this, in the surface protection film of comparative example 1～9, obtain bonding equilibrium of forces in low speed peeling rate and the high speed peeling rate about (1); (2) prevent the generation of adhesive residue; (3) performance of doing over again can not side by side satisfy whole performances that requires.

Claims (21)

1. binder composition, it is by containing (methyl) acrylate monomer that (A) alkyl carbon atoms number is C4～C10, (B) contain the copolymerisable monomer of hydroxyl, (C) contain the copolymerisable monomer of carboxyl, (D) acrylic polymers of the multipolymer of polyalkylene glycol mono (methyl) acrylate monomer consists of, it further contains the above isocyanate compound of (E) 3 officials energy, (F) cross-linked inhibitor, (G) crosslinking catalyst, (H) polyether-modified silicone compounds, the acid number of aforesaid propylene acids polymkeric substance is 0.01～8.0.
2. binder composition according to claim 1, wherein above-mentioned (B) copolymerisable monomer of containing hydroxyl is for being selected from more than at least a in the compound group that is comprised of (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester, (methyl) vinylformic acid 2-hydroxy methacrylate, N-hydroxyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxyethyl (methyl) acrylamide;
Above-mentioned (A) alkyl carbon atoms number with respect to 100 weight parts is (methyl) acrylate monomer of C4～C10, above-mentioned (B) that contain 0.1～5.0 weight part contains the copolymerisable monomer of hydroxyl, and, above-mentioned (B) contains in the copolymerisable monomer of hydroxyl, and total amount of (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester is 0～0.9 weight part.
3. binder composition according to claim 1 and 2, wherein above-mentioned (C) contains the copolymerisable monomer of carboxyl for being selected from by (methyl) vinylformic acid, propyloic (methyl) acrylate, carboxylic amyl group (methyl) acrylate, 2-(methyl) acryloxy ethyl hexahydrophthalic acid, 2-(methyl) acryloxy propyl group hexahydrophthalic acid, 2-(methyl) acryloxy ethyl phthalic acid, 2-(methyl) acryloxy ethyl succsinic acid, 2-(methyl) acryloxy ethyl toxilic acid, carboxyl polycaprolactone list (methyl) acrylate, more than at least a in the compound group that 2-(methyl) acryloxy ethyl tetrahydrochysene phthalic acid forms;
Carbonatoms with respect to above-mentioned (A) alkyl of 100 weight parts is (methyl) acrylate monomer of C4～C10, and above-mentioned (C) that contain 0.35～1.0 weight part contains the copolymerisable monomer of carboxyl.
4. binder composition according to claim 1 and 2, wherein above-mentioned (D) polyalkylene glycol mono (methyl) acrylate monomer is for being selected from more than at least a in polyalkylene glycol mono (methyl) acrylate, methoxyl group polyalkylene glycol (methyl) acrylate, oxyethyl group polyalkylene glycol (methyl) acrylate;
Carbonatoms with respect to above-mentioned (A) alkyl of 100 weight parts is (methyl) acrylate monomer of C4～C10, contains above-mentioned (D) polyalkylene glycol mono (methyl) acrylate monomer of 1～20 weight part.
5. binder composition according to claim 1 and 2, wherein above-mentioned (E) 3 officials are selected from more than at least a in the compound group that the biuret body by the biuret body of the adduction object of the adduction object of the isocyanuric acid ester body of the isocyanuric acid ester body of hexamethylene diisocyanate compound, isophorone diisocyanate compound, hexamethylene diisocyanate compound, isophorone diisocyanate compound, hexamethylene diisocyanate compound, isophorone diisocyanate compound forms;
With respect to the above-mentioned multipolymer of 100 weight parts, above-mentioned (E) 3 officials of containing 0.5～5.0 weight part can above isocyanate compound.
6. binder composition according to claim 1 and 2, wherein above-mentioned (H) polyether-modified silicone compounds is that the HLB value is 7～12 polyether-modified silicone compounds;
With respect to the above-mentioned multipolymer of 100 weight parts, contain above-mentioned (H) polyether-modified silicone compounds of 0.01～0.5 weight part.
7. binder composition according to claim 1 and 2, wherein above-mentioned (F) cross-linked inhibitor is the keto-enol tautomerism compound;
With respect to the above-mentioned multipolymer of 100 weight parts, contain above-mentioned (F) cross-linked inhibitor of 1.0～5.0 weight parts.
8. binder composition according to claim 1 and 2, wherein above-mentioned (G) crosslinking catalyst is organo-tin compound;
With respect to the above-mentioned multipolymer of 100 weight parts, contain above-mentioned (G) crosslinking catalyst of 0.01～0.5 weight part.
9. binder composition according to claim 1 and 2, the bounding force of binder layer under low speed peeling rate 0.3m/min that above-mentioned binder composition cross-links is formed is 0.05～0.1N/25mm, and the bounding force under high speed peeling rate 30m/min is below the 1.0N/25mm.
10. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 1 and 2 is formed at the one or both sides of resin molding.
11. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 3 is formed at the one or both sides of resin molding.
12. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 4 is formed at the one or both sides of resin molding.
13. a bonding film, its feature exists, and forms the binder layer that binder composition cross-links according to claim 5 is formed at the one or both sides of resin molding.
14. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 6 is formed at the one or both sides of resin molding.
15. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 7 is formed at the one or both sides of resin molding.
16. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 8 is formed at the one or both sides of resin molding.
17. a bonding film is characterized in that, forms the binder layer that binder composition cross-links according to claim 9 is formed at the one or both sides of resin molding.
18. surface protection film; it forms the surface protection film that binder layer obtains for the one side at resin molding; described binder layer is by obtaining binder composition cross-links according to claim 1 and 2; describe at the surface protection film via described binder layer with ballpoint pen, do not transfer the pollution to adherend.
19. surface protection film according to claim 18, its purposes as the surface protection film of Polarizer is used.
20. surface protection film according to claim 18, its face opposite with described binder layer formation side at described resin molding carries out antistatic and anti-pollution processing.
21. surface protection film according to claim 19, its face opposite with described binder layer formation side at described resin molding carries out antistatic and anti-pollution processing.
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