WO2014010934A1 - 광학필름용 점착제 조성물 - Google Patents

광학필름용 점착제 조성물 Download PDF

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Publication number
WO2014010934A1
WO2014010934A1 PCT/KR2013/006128 KR2013006128W WO2014010934A1 WO 2014010934 A1 WO2014010934 A1 WO 2014010934A1 KR 2013006128 W KR2013006128 W KR 2013006128W WO 2014010934 A1 WO2014010934 A1 WO 2014010934A1
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WIPO (PCT)
Prior art keywords
meth
adhesive composition
acrylate
pressure
sensitive adhesive
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PCT/KR2013/006128
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English (en)
French (fr)
Korean (ko)
Inventor
박은경
손지희
윤찬오
이재관
김장순
Original Assignee
(주)엘지하우시스
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Priority to CN201380037167.9A priority Critical patent/CN104471005B/zh
Priority to JP2015520075A priority patent/JP5947985B2/ja
Publication of WO2014010934A1 publication Critical patent/WO2014010934A1/ko

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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
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
    • 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
    • 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
    • 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
    • C09J133/068—Copolymers with monomers not covered by C09J133/06 containing glycidyl groups
    • 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
    • C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen

Definitions

  • the present invention relates to a pressure-sensitive adhesive composition for an optical film, and more particularly to a pressure-sensitive adhesive composition containing a hydrophilic functional group-containing monomer content is limited to a monomer of a certain component.
  • a liquid crystal cell in which both surfaces of a polarizing film such as a polyvinyl alcohol-based film imparted with polarization are sandwiched by a liquid crystal component in which a polarizing plate coated with a cellulose-based film such as a triacetic cellulose film is oriented between two glass plates. It is carried out by laminating
  • a polarizing film such as a polyvinyl alcohol-based film imparted with polarization
  • 10-0988185 discloses a pressure-sensitive adhesive composition comprising an acrylic polymer composed of a certain component, although the pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive composition shows an excellent effect in peel force or durability, before and after peeling Due to the relationship between the pressure-sensitive adhesive layer and the adherend and the rework function of the adherend, nothing is described, which still implies the conventional problem of the remaining of foreign matter or residue after peeling off the pressure-sensitive adhesive layer.
  • the present invention is that the pressure-sensitive adhesive composition used for the optical film is neatly peeled off from the adherend of glass and plastic after water absorption, to impart a function that the adherent can be reworked (rework).
  • the purpose is that the pressure-sensitive adhesive composition used for the optical film is neatly peeled off from the adherend of glass and plastic after water absorption, to impart a function that the adherent can be reworked (rework).
  • the adhesive composition of this invention is characterized by including 25 weight part or more of hydrophilic functional group containing monomers with respect to 100 weight part of (meth) acrylic acid ester monomers.
  • the other object may include an adhesive layer formed by including the pressure-sensitive adhesive composition.
  • the pressure-sensitive adhesive composition of the present invention can absorb a predetermined level or more water by containing a predetermined content or more of the hydrophilic functional group-containing monomer. Thereafter, moisture absorbed at high vacuum and high temperature is boiled, and volume expansion occurs, so that desorption with glass or plastic, to which the pressure-sensitive adhesive composition is attached, is facilitated, and the pressure-sensitive adhesive composition is neatly peeled back to the adhesive such as glass or plastic. Allow to have a rework function.
  • FIG. 1 is a diagram showing the before and after the water absorption of the pressure-sensitive adhesive composition of the present invention.
  • This invention provides the adhesive composition characterized by including 25 weight part or more of hydrophilic functional group containing monomers with respect to 100 weight part of (meth) acrylic acid ester monomers.
  • the pressure-sensitive adhesive composition of the present invention enables the peeling of the pressure-sensitive adhesive composition to be adhered to glass or plastic by including a hydrophilic functional group-containing monomer. More specifically, the hydrophilic functional group-containing monomer absorbs a certain level of water so that water exists through condensation in the pressure-sensitive adhesive composition.
  • liquid crystal displays such as glass or plastic, specifically, LCDs, which are detached from the pressure-sensitive adhesive composition, may have a rework function.
  • the hydrophilic functional group-containing monomer includes 25 parts by weight or more based on 100 parts by weight of the (meth) acrylic acid ester monomer, and when less than 25 parts by weight, the hydrophilic functional group-containing monomer is insufficient to sufficiently retain water. This becomes insufficient and the cohesion force between hydrophilic functional group containing monomers becomes low, and there exists a possibility that a destruction of superposition
  • the upper limit of the content ratio of the hydrophilic functional group-containing monomer is not limited, but in order to have a strong cohesive force and to be peeled off at any interface, it is preferable to include 80 parts by weight or more.
  • the said hydrophilic functional group containing monomer is 1 or more types chosen from a hydroxyl group containing monomer, an amino group containing monomer, a carboxyl group containing monomer, a sulfone group containing monomer, a morpholine group containing monomer, and a glycidyl group containing monomer.
  • hydroxyl-containing monomer 2-hydroxyethyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 5-hydroxypentyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, for example (Meth) acrylic acid hydroxyalkyl esters, such as 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, and (4-hydroxymethylcyclohexyl) methyl (meth) acrylate, and capro Caprolactone-modified monomers such as lactone-modified 2-hydroxyethyl (meth) acrylate, 2-acryloyloxyethyl-2-hydroxyethylphthalic acid, N-methylol (meth) acrylamide, N-hydroxyethyl ( Primary hydroxyl group-containing monomers such as meta) acrylamide; 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 2-hydroxy
  • hydroxyl group-containing monomers it is particularly preferable to use 2-hydroxyethyl (meth) acrylate because it contains little impurities such as di (meth) acrylate and is easy to manufacture.
  • amino-group containing monomer dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate, etc. are mentioned, for example.
  • carboxyl group-containing monomers examples include acrylic acid, methacrylic acid, crotonic acid, maleic acid, maleic anhydride, itaconic acid, fumaric acid, acrylamide N-glycolic acid, cinnamic acid, and Michael adducts of (meth) acrylic acid (e.g., acrylic acid). Dimer, methacrylic acid dimer, acrylic acid trimer, methacrylic acid trimer, acrylic acid tetramer, methacrylic acid tetramer and the like), 2- (meth) acryloyloxyethyldicarboxylic acid monoester (e.g.
  • sulfone group-containing monomers examples include olefin sulfones such as ethylene sulfone, allyl sulfone, and metaallyl sulfone, 2-acrylamide-2-methylpropane sulfone, styrene sulfone or salts thereof.
  • 4-methylmorpholine (4-Methylmorpholine) and the said glycidyl-group containing monomer are glycidyl (meth) acrylate, allyl glycidyl ether, etc. are mentioned as said morpholine group containing monomer.
  • the pressure-sensitive adhesive composition of the present invention can achieve the object of the present invention that can increase the moisture absorption by containing the hydrophilic functional group-containing monomer to rework the adherend after peeling off the pressure-sensitive adhesive composition.
  • the polymer molecular weight of the said (meth) acrylic acid ester monomer and the said hydrophilic functional group containing monomer is 1 million-1.2 million, It is characterized by the above-mentioned. If the polymer molecular weight exceeds 1.2 million, there is a problem that the specific gravity of the pressure-sensitive adhesive composition is increased, and if the polymer molecular weight is less than 1 million, durability may be weak.
  • the kind of (meth) acrylic acid ester monomer contained in the pressure-sensitive adhesive composition of the present invention is not particularly limited, and for example, alkyl (meth) acrylate can be used.
  • alkyl (meth) acrylate can be used.
  • Tg glass transition temperature
  • adhesion may be difficult to control, and thus the alkyl group having 1 to 14 carbon atoms ( It is preferable to use a meta) acrylic acid ester monomer.
  • the (meth) acrylic acid ester monomers include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, t -Butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (meth) At least one selected from the group consisting of acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, lauryl (meth) acrylate and tetradecyl (meth) acrylate.
  • a crosslinkable functional group may be provided, and in this case, the pressure-sensitive adhesive composition to be formed in the present invention may be a monomer mixture including a (meth) acrylic acid ester monomer, a hydrophilic functional group-containing monomer, and a crosslinkable monomer. May be a polymer of
  • the adhesive composition of this invention makes it possible to harden an adhesive composition by active energy ray irradiation, such as an ultraviolet-ray for a very short time, and can adjust the molecular weight of an adhesive composition.
  • active energy ray irradiation such as an ultraviolet-ray for a very short time
  • the pressure-sensitive adhesive composition is cured by heating, and the curing speed is slow, and there is difficulty in controlling the molecular weight of the pressure-sensitive adhesive composition, but both may be used in combination if necessary.
  • photoinitiator For example, diethoxy acetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyl dimethyl ketal, 4- (2-hydroxyethoxy) Phenyl- (2-hydroxy-2-propyl) ketone, 1-hydroxycyclohexylphenyl ketone, 2-methyl-2-morpholino (4-thiomethylphenyl) propan-1-one, 2-benzyl-2- Acetophenones such as dimethylamino-1- (4-morpholinophenyl) butanone and 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propanone oligomer; Benzoin such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether; Benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone
  • the adhesive composition of this invention can further contain 0.5-1.0 weight part of photoinitiators with respect to 100 weight part of said (meth) acrylic acid ester monomers.
  • the photopolymerization initiator is out of the above range, many molecules having a short bond length may be generated, and thus durability may be weak.
  • electron rays, proton rays, neutral magnetic rays, and the like may be used in addition to electromagnetic waves such as ultraviolet rays such as far ultraviolet rays, ultraviolet rays, near ultraviolet rays, and infrared rays, X-rays, and ⁇ -rays. Curing by ultraviolet irradiation is advantageous from the ease of obtaining the apparatus, the price, and the like.
  • a high pressure mercury lamp As the light source for the ultraviolet irradiation, a high pressure mercury lamp, an electrodeless lamp, an ultra high pressure mercury lamp, a carbon arc lamp, a xenon lamp, a metal halide lamp, a chemical lamp, a black light, and the like are used.
  • the said high pressure mercury lamp it is performed on condition of 5-3000mJ / cm ⁇ 2>, Preferably it is 10-1000mJ / cm ⁇ 2>.
  • the electrodeless lamp for example, it is carried out under a condition of 2 to 1500 mJ / cm 2, preferably 5 to 500 mJ / cm 2.
  • the irradiation time varies depending on the type of light source, the distance between the light source and the coated surface, the coating thickness, and other conditions, but usually several seconds to several tens of seconds, and in some cases, one second of water.
  • the pressure-sensitive adhesive composition of the present invention may absorb water for 48 hours in an environment of temperature 25 °C, humidity 50%, and dried for 1 hour at a temperature of 100 °C can absorb more than 5.0% by weight of water compared to the weight of the pressure-sensitive adhesive composition. .
  • the amount of water absorbed by the pressure-sensitive adhesive composition may be specifically 7.0 wt% or more.
  • the moisture moisture is not sufficiently ranged, so that there is not enough water particles to induce expansion in the inside under high temperature and vacuum conditions, resulting in the moisture of the pressure-sensitive adhesive composition.
  • peeling becomes difficult after absorption, and there exists a possibility of causing moisture condensation in use with an adhesive composition.
  • the water vapor transmission rate of the pressure-sensitive adhesive composition of the present invention is characterized in that 110g / m 2 ⁇ 24hr or less under the conditions of temperature 40 °C, relative humidity 70%.
  • Moisture permeability refers to the degree of water vapor permeation through the paper, and refers to the amount of water vapor transmitted through the surface area of 1 m 2 of paper under a certain condition in g in g.
  • the moisture permeability exceeds 110 g / m 2 ⁇ 24hr at a temperature of 40 ° C. and a relative humidity of 70%, the network capable of moving moisture may not be dense, and in this case, the content of the hydrophilic functional group-containing monomer is insufficient. There is little interaction with and the moisture permeability is increased, on the contrary, the pressure-sensitive adhesive composition has a problem in that the cohesive force is low because the content of the hydrophilic functional group-containing monomer is low.
  • the water vapor transmission rate may be 100 g / m 2 ⁇ 24hr or more, but the lower limit thereof is not limited.
  • the adhesive composition of the present invention is characterized in that the peel force after water absorption is smaller than the peel force before water absorption. Due to the reduced peel force after water absorption, the pressure-sensitive adhesive composition is neatly peeled from the adherend, whereby the adherend can be used again.
  • the adhesive of the pressure-sensitive adhesive composition may be glass or plastic, for example, may be attached between a touch screen panel (TSP) and a liquid crystal display (LCD). .
  • FIG. 1 is a schematic diagram showing before and after water absorption of the pressure-sensitive adhesive composition of the present invention.
  • the pressure-sensitive adhesive composition is laminated between the TSP and the LCD to firmly adhere the adhesive.
  • the present invention allows the adhesive composition to be removed without debris or residue after desorption of the adhesive composition and the LCD, containing a certain amount of hydrophilic functional group in the adhesive composition in order to give the LCD rework (rework) function Monomers.
  • the hydrophilic functional group-containing monomer can impregnate a certain level of water, and vapor bubbles inside the water particles in which the hydrophilic functional group-containing monomer is impregnated at low pressure after vacuum / high temperature conditions. Is generated and vaporized, the volume expansion occurs, the peeling force of the pressure-sensitive adhesive composition to the adherend becomes small.
  • the pressure-sensitive adhesive composition attached to the LCD can be detached without residue or foreign matter due to the increased peeling force, and the pressure-sensitive adhesive composition can be easily removed compared to the conventional LCD. Can be reworked.
  • the peeling force before water absorption of the pressure-sensitive adhesive composition may be characterized in that 1,500 ⁇ 2,000g / in, peeling force after water absorption is 800 ⁇ 1,100g / in.
  • peeling force before water absorption of the pressure-sensitive adhesive composition is out of the above range, there is a fear of detachment from the adherend by the external environment or impact.
  • peeling force after the water absorption of the pressure-sensitive adhesive composition is out of the above range does not peel the pressure-sensitive adhesive composition at the interface with the adhesive, there is a problem that the adhesive is torn when peeling off by twisting arbitrarily.
  • the present invention provides a pressure-sensitive adhesive layer characterized in that the pressure-sensitive adhesive composition is formed, and further, the pressure-sensitive adhesive layer can be used for the optical member.
  • the thickness of the said adhesive layer is not specifically limited, 5-300 micrometers is preferable, Especially 10-50 micrometers is preferable, Furthermore, 12-30 micrometers is preferable.
  • the thickness of the pressure-sensitive adhesive layer is too thin, there is a tendency that the adhesive physical properties are difficult to stabilize, and when too thick, the thickness of the entire optical member to which the pressure-sensitive adhesive layer can be applied tends to increase excessively.
  • optical film used suitably for image display apparatuses, such as a liquid crystal display device, an organic electroluminescence display, and a PDP, for example, a polarizing plate, a retardation plate, an elliptical polarizing plate, an optical compensation film, And luminance-enhanced films, and those in which they are laminated.
  • Example 1 Except for obtaining a polymer having a molecular weight of about 1.2 million including 25 parts by weight of 2-hydroxyethyl acrylate in Example 1, a pressure-sensitive adhesive composition was prepared as in Example 1.
  • a pressure-sensitive adhesive composition was prepared in the same manner as in Example 1 except for obtaining a polymer having a molecular weight of about 1 million by including 30 parts by weight of acrylic acid based on 100 parts by weight of 2-ethylhexyl acrylate in Example 1.
  • the pressure-sensitive adhesive composition was prepared in the same manner as in Example 3 except that 25 parts by weight of acrylic acid was obtained to obtain a polymer having a molecular weight of about 1.1 million.
  • a pressure-sensitive adhesive composition was prepared in the same manner as in Example 1 except for obtaining a polymer having a molecular weight of about 1.1 million by including 30 parts by weight of glycidyl methacrylate with respect to 100 parts by weight of 2-ethylhexyl acrylate in Example 1. .
  • a pressure-sensitive adhesive composition was prepared in the same manner as in Example 5 except that 25 parts by weight of glycidyl methacrylate was obtained to obtain a polymer having a molecular weight of about 1.2 million.
  • a pressure-sensitive adhesive composition was prepared in the same manner as in Comparative Example 1 except that 20 parts by weight of 2-hydroxyethyl acrylate was obtained to obtain a polymer having a molecular weight of about 1.2 million.
  • the pressure-sensitive adhesive composition of Examples and Comparative Examples of Table 1 was cured to prepare a pressure-sensitive adhesive layer having a thickness of 100 ⁇ m, and then the pressure-sensitive adhesive layer was attached between the TSP and the LCD. At this time, the water absorption of the pressure-sensitive adhesive layer, moisture permeability, peel strength, and LCD reuse (rework) The availability was measured.
  • Moisture absorption amount The pressure-sensitive adhesive layer containing moisture for 48 hours in an environment of temperature 25 °C, 50% humidity is dried for 1 hour at 100 °C temperature weight of the adhesive layer through a moisture analyzer (Moisture analyzer Ohus MB45) The rate of reduction was calculated and the moisture uptake was measured.
  • Peeling force A pressure of 300 g per 1 cm 2 was applied to the pressure-sensitive adhesive layer adhered to the LCD surface to bring the adhesive force into close contact. Thereafter, some of the ends of the pressure-sensitive adhesive layer were peeled at a peel rate of 300 mm / min at a peel angle of 180 degrees to measure its peel strength.
  • LCD reworkability Heat the product at 70 °C under 50 Torr vacuum for more than 30 minutes under 50 Torr vacuum after allowing it to be absorbed by high temperature, high humidity (85/85) for 2 days with adhesive layer attached between TSP and LCD. Then, the pressure-sensitive adhesive layer was taken out and twisted to observe whether the LCD could be reworked after desorption with the LCD.
  • Table 2 shows the results of the above water absorption, water vapor permeability, peel strength, and LCD rework.
  • the pressure-sensitive adhesive composition of Examples 1 to 6 containing 25 parts by weight or more of the hydrophilic functional group-containing monomer, it was found that it had a water absorption of 5% or more and a water vapor transmission rate of 110 g / m 2 ⁇ 24hr or less.
  • the water absorption amount and the moisture permeability of the above values include a smaller peeling force after water absorption than before water absorption, so that the LCD and the pressure-sensitive adhesive composition can be easily detached and peeled off without leaving any residue or impurities. (rework) is possible.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
PCT/KR2013/006128 2012-07-11 2013-07-10 광학필름용 점착제 조성물 WO2014010934A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380037167.9A CN104471005B (zh) 2012-07-11 2013-07-10 光学膜用粘结剂组合物
JP2015520075A JP5947985B2 (ja) 2012-07-11 2013-07-10 光学フィルム用粘着剤組成物

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KR1020120075457A KR101594210B1 (ko) 2012-07-11 2012-07-11 광학필름용 점착제 조성물
KR10-2012-0075457 2012-07-11

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Cited By (1)

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CN108676532A (zh) * 2018-04-16 2018-10-19 杭州电子科技大学 一种环氧树脂粘结材料

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KR101906638B1 (ko) * 2014-09-30 2018-10-11 주식회사 엘지화학 터치패널용 점착제 조성물, 점착 필름 및 터치 패널
JP6427004B2 (ja) * 2014-12-26 2018-11-21 株式会社トッパンＴｏｍｏｅｇａｗａオプティカルフィルム 積層フィルム、透明導電性フィルム及びタッチパネル
KR102332570B1 (ko) 2018-01-04 2021-11-29 동우 화인켐 주식회사 점착 시트, 이를 포함하는 광학부재 및 화상표시장치
KR102329318B1 (ko) 2018-01-24 2021-11-22 동우 화인켐 주식회사 점착 시트, 이를 포함하는 광학부재 및 화상표시장치

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