WO2018235217A1 - アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート - Google Patents
アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート Download PDFInfo
- Publication number
- WO2018235217A1 WO2018235217A1 PCT/JP2017/022966 JP2017022966W WO2018235217A1 WO 2018235217 A1 WO2018235217 A1 WO 2018235217A1 JP 2017022966 W JP2017022966 W JP 2017022966W WO 2018235217 A1 WO2018235217 A1 WO 2018235217A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- meth
- resin composition
- acrylic resin
- acrylic
- mass
- Prior art date
Links
Classifications
-
- 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
- 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
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or 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 of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
-
- 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
- C08F120/00—Homopolymers 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
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/10—Esters
- C08F120/26—Esters containing oxygen in addition to the carboxy oxygen
-
- 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
- C08F20/00—Homopolymers and 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
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/04—Acids, Metal salts or ammonium salts thereof
- C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/281—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate
-
- 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
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/285—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety
-
- 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
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
-
- 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
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0016—Plasticisers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/28—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or 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 of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
-
- 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
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- 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
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
-
- 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
-
- 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
- C08F2810/00—Chemical modification of a polymer
- C08F2810/20—Chemical modification of a polymer leading to a crosslinking, either explicitly or inherently
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
Definitions
- the present invention relates to an acrylic resin composition, a pressure-sensitive adhesive composition, a substrate for a pressure-sensitive adhesive sheet, and a pressure-sensitive adhesive sheet.
- Acrylic resins are excellent in weatherability, durability, and high transparency, and are used in a wide variety of applications due to the presence of a large number of monomer species.
- (meth) acrylic acid alkyl ester has a low glass transition temperature (Tg) when it is homopolymer, is excellent in rubber elasticity, and the polymer itself develops tackiness, so it is often used in the acrylic rubber, adhesive and adhesive fields. It is used.
- Many polymers of (meth) acrylic acid alkyl esters are produced by solution polymerization. As understood from this, the polymer has a solubility parameter close to common industrial organic solvents such as toluene, ethyl acetate and methyl ethyl ketone, and is easily soluble in these organic solvents.
- the display panel and the housing are bonded with an acrylic adhesive or a double-sided adhesive tape.
- the mobile device is equipped with a touch panel, and is operated by touching with a person's finger, or touches a person's face when making a call.
- the touch panel touches a human hand or face
- oil components such as sebum and finger fat adhere to the touch panel.
- the oily component contains a component such as oleic acid, and the component has an SP value close to that of industrial organic solvents and dissolves common acrylic resins.
- a double-sided adhesive tape for structural adhesion used in industrial fields such as construction materials, automobiles, home appliances, large-sized electronic devices, etc.
- acrylic foam excellent in flexibility and stress followability.
- double-sided pressure-sensitive adhesive tapes having an acrylic foam substrate are damaged when detergents for cleaning the floor or chemicals such as wax are attached.
- detergents for car washing, waxes, gasoline, etc. may be attached during refueling, and these also dissolve or swell common acrylic resins.
- Patent Document 1 discloses a urethane bond of an acrylic polyol resin and a polyisocyanate compound to a photocurable coating composition containing a specific acrylic polyol resin, a polyfunctional photocurable compound and a polyisocyanate compound in a specific ratio. It is described that a paint having high chemical resistance can be obtained by performing two curing reactions of a formation reaction and a radical polymerization reaction of a polyfunctional photocurable compound with a photopolymerization initiator.
- Patent Documents 2 and 3 disclose that a resin composition containing an acrylic resin mainly composed of n-butyl acrylate units is resistant to oleic acid and artificial sebum.
- Patent Document 4 a pressure-sensitive adhesive composition containing an acrylic resin mainly composed of a unit of alkyl (meth) acrylate having an alkyl group having 1 to 6 carbon atoms is resistant to sebum and cosmetics. It is described.
- Patent Documents 1 to 4 are insufficient in chemical resistance and oil resistance, and further improvement is desired.
- An object of the present invention is to provide an acrylic resin composition having high chemical resistance and high oil resistance. Another object of the present invention is to provide a pressure-sensitive adhesive composition comprising the acrylic resin composition, a substrate for a pressure-sensitive adhesive sheet comprising the acrylic resin composition, and a pressure-sensitive adhesive sheet.
- the acrylic resin composition according to the present invention has the following formula (1)
- R 1 represents a hydrogen atom or a methyl group
- R 2 represents an alkylene group having 2 to 4 carbon atoms
- R 3 represents an alkyl group having 1 to 10 carbon atoms
- n represents 1 to 20 Indicates an integer
- An acrylic resin composition comprising a polymer comprising units derived from monomers represented by The proportion of units derived from the monomer represented by the formula (1) contained in the polymer is 40 to 99% by mass with respect to 100% by mass of all monomer units constituting the polymer.
- the tensile strength after immersion of the acrylic resin composition in oleic acid for 24 hours is 50% or more of the value of the tensile strength before immersion in oleic acid.
- the pressure-sensitive adhesive composition according to the present invention comprises the acrylic resin composition according to the present invention.
- the pressure-sensitive adhesive sheet substrate according to the present invention comprises the acrylic resin composition according to the present invention.
- the pressure-sensitive adhesive sheet according to the present invention comprises the pressure-sensitive adhesive composition according to the present invention and / or the pressure-sensitive adhesive sheet substrate according to the present invention.
- an acrylic resin composition having high chemical resistance and high oil resistance can be provided.
- the adhesive composition which consists of this acrylic resin composition, the base material for adhesive sheets containing this acrylic resin composition, and an adhesive sheet can be provided.
- the acrylic resin composition according to the present invention contains a polymer containing a unit derived from the monomer represented by the formula (1).
- the proportion of units derived from the monomer represented by the formula (1) contained in the polymer is 40 to 99% by mass with respect to 100% by mass of all monomer units constituting the polymer.
- the tensile strength after immersing the said acrylic resin composition in an oleic acid for 24 hours is 50% or more of the value of the tensile strength before immersing in an oleic acid.
- the present inventors have found that an acrylic resin composition having high chemical resistance and high oil resistance because the polymer contained in the acrylic resin composition mainly contains a unit derived from the monomer represented by the formula (1). It was found that was obtained. Specifically, the ratio of units derived from the monomer represented by the formula (1) contained in the polymer is 40 to 99% by mass with respect to 100% by mass of all monomer units constituting the polymer. It has been found that even when the resin composition is immersed in oleic acid for 24 hours, its tensile strength can maintain 50% or more of the value of the tensile strength before immersion in oleic acid.
- the polymer (acrylic resin) contained in the acrylic resin composition mainly contains a unit derived from the monomer represented by the formula (1), the polarity of the acrylic resin is enhanced, and the solubility parameter of the acrylic resin, the drug and the The difference with the solubility parameter such as oil component is large. Therefore, it is estimated that the chemical resistance and the oil resistance of the acrylic resin composition are improved.
- (meth) acrylic acid shows acrylic acid and methacrylic acid.
- the acrylic resin composition according to the present invention preferably contains 70% by mass or more, more preferably 80% by mass or more, of a polymer containing a unit derived from the monomer represented by the formula (1).
- R 1 represents a hydrogen atom or a methyl group.
- R 2 represents an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 or 3 carbon atoms, and more preferably an ethylene group.
- R 3 represents an alkyl group having 1 to 10 carbon atoms, preferably an alkyl group having 1 to 5 carbon atoms, and more preferably an alkyl group having 1 to 3 carbon atoms.
- n is an integer of 1 to 20, preferably an integer of 1 to 15, and more preferably an integer of 1 to 10.
- the monomer represented by the formula (1) include methoxyethyl (meth) acrylate, methoxypropyl (meth) acrylate, methoxypropyl (meth) acrylate, methoxybutyl (meth) acrylate, (meth ) (Meth) acrylic acid alkoxyalkyl esters such as methoxybutyl acrylate, ethoxyethyl (meth) acrylate, ethoxypropyl (meth) acrylate and ethoxybutyl (meth) acrylate; methoxydiethylene glycol (meth) acrylate (meth) ) Methoxy triacrylate ethylene glycol (meth) acrylate (methoxy) (meth) acrylate ethylene glycol (meth) acrylate, (meth) acrylate ethoxy di ethylene glycol, (meth) acrylate ethoxy tri ethylene glycol (meth) acrylate ethoxy (meta) acrylic
- methoxyethyl (meth) acrylate, ethoxyethyl (meth) acrylate, methoxy (poly) ethylene glycol (meth) acrylate, ethoxy (meth) acrylate (Poly) ethylene glycol is preferred, and methoxyethyl (meth) acrylate is more preferred.
- 2-methoxyethyl acrylate is useful as a component of a pressure-sensitive adhesive or an adhesive, since its homopolymer Tg is as low as ⁇ 50 ° C. and is close to a monomer often used for an acrylic pressure-sensitive adhesive component. These monomers may be used alone or in combination of two or more.
- the proportion of units derived from the monomer represented by the formula (1) contained in the polymer is 40 to 99% by mass, preferably 45 to 95% by mass, with respect to 100% by mass of all monomer units constituting the polymer. 50 to 92% by mass is more preferable, and 55 to 90% by mass is more preferable. When the proportion is less than 40% by mass, chemical resistance and oil resistance are reduced. When the proportion exceeds 99% by mass, the proportion of units derived from the reactive monomer for the purpose of crosslinking relatively decreases.
- this ratio is a monomer of the unit derived from the monomer represented by Formula (1) contained in a polymer when the total mass as a monomer of all the monomer units which comprise a polymer is 100 mass% as a monomer Indicates the mass ratio of The same applies to the proportion of units derived from other monomers described later.
- the polymer may further comprise units derived from (meth) acrylic acid alkyl ester.
- the polymer contains a unit derived from (meth) acrylic acid alkyl ester, an acrylic resin composition which can be applied to various uses can be obtained.
- (meth) acrylic acid alkyl ester examples include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, (meth) acrylate ) Tertiary butyl acrylate, isobutyl (meth) acrylate, hexyl (meth) acrylate, isohexyl (meth) acrylate, octyl (meth) acrylate, isooctyl (meth) acrylate, ethylhexyl (meth) acrylate ( Nonyl (meth) acrylate, isononyl (meth) acrylate, decyl (meth) acrylate, isodecyl (meth) acrylate, dodecyl (meth) acrylate, isododecyl (meth)
- the proportion of the unit derived from the (meth) acrylic acid alkyl ester contained in the polymer is preferably 0.1 to 40% by mass, and more preferably 5 to 35% by mass with respect to 100% by mass of all monomer units constituting the polymer. Preferably, 10 to 30% by mass is more preferable.
- the ratio is 40% by mass or less, the ratio of units derived from the monomer represented by the formula (1) can be increased, and the chemical resistance and oil resistance of the acrylic resin composition are improved.
- the polymer preferably further contains a unit derived from a carboxylic acid-containing (meth) acrylic monomer.
- the strength of the acrylic resin composition can be further improved.
- Specific examples of the carboxylic acid-containing (meth) acrylic monomer include (meth) acrylic acid, ⁇ -carboxyethyl (meth) acrylate, itaconic acid, crotonic acid, maleic acid, fumaric acid and the like.
- (meth) acrylic acid is preferable from the viewpoint of higher strength of the acrylic resin composition. One of these may be used, or two or more may be used in combination.
- the proportion of the unit derived from the carboxylic acid-containing (meth) acrylic monomer contained in the polymer is preferably 0.5 to 20% by mass, and 5 to 18% by mass with respect to 100% by mass of all monomer units constituting the polymer. 10 to 17% by mass is more preferable, and 11 to 15% by mass is particularly preferable.
- the proportion of the carboxylic acid-containing (meth) acrylic monomer is 0.5% by mass or more, the strength of the acrylic resin composition can be further improved, and the reaction point with a crosslinking agent such as an epoxy-based crosslinking agent Can be granted.
- the polymer further contains a unit derived from a nitrogen-containing acrylic monomer.
- the strength and heat resistance of the acrylic resin composition can be improved, and chemical resistance and oil resistance are also improved.
- nitrogen-containing acrylic monomer examples include (meth) acrylamide, N-alkyl-substituted (meth) acrylamide such as N-isopropyl (meth) acrylamide, N, N-dimethyl (meth) acrylamide, N, N-diethyl (meth) ) N, N-dialkyl substituted (meth) acrylamide such as acrylamide, acryloyl morpholine, vinyl pyridine, N-vinyl pyrrolidone, aminoethyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, dimethyl (meth) acrylate Aminopropyl and the like.
- N-alkyl-substituted (meth) acrylamide such as N-isopropyl (meth) acrylamide, N, N-dimethyl (meth) acrylamide, N, N-diethyl (meth) ) N
- (meth) acrylamide, N-alkyl-substituted (meth) acrylamide, N, N-dialkyl-substituted (meth) acrylamide and acryloyl morpholine are preferable from the viewpoint of versatility and industrialization.
- One of these may be used, or two or more may be used in combination.
- the proportion of the unit derived from the nitrogen-containing acrylic monomer contained in the polymer is preferably 1 to 50% by mass, more preferably 5 to 40% by mass, with respect to 100% by mass of all monomer units constituting the polymer. % By mass is more preferred.
- the ratio is 1% by mass or more, the resin modification is effective.
- the acrylic resin composition can be applied to various applications.
- the polymer may be, for example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, ) Units derived from hydroxyl group-containing copolymerizable monomers such as 4-hydroxybutyl acrylate, 2-hydroxyhexyl (meth) acrylate, monoesters of (meth) acrylic acid and polyethylene glycol or polypropylene glycol, etc. Can be included.
- the polymerization method of the monomer composition containing the above-mentioned monomer is not particularly limited.
- various polymerization methods such as solution polymerization, bulk polymerization, suspension polymerization, emulsion polymerization, etc.
- it is carried out using means such as photopolymerization or thermal polymerization.
- polymerization by radiation such as gamma rays or electron beam polymerization can also be used.
- Photopolymerization can be carried out, for example, by irradiating the monomer composition with UV radiation in the presence of a photopolymerization initiator.
- Thermal polymerization can be carried out, for example, by heating the monomer composition to 50 to 200 ° C. in the presence of a thermal polymerization initiator.
- the acrylic resin composition according to the present invention preferably further contains a crosslinking agent from the viewpoint of forming a crosslinked structure.
- a crosslinking agent from the viewpoint of the reactivity with the acrylic resin composition, a polyfunctional (meth) acrylic monomer, a polyfunctional (meth) acrylic oligomer, a glycidyl group-containing compound having two or more functions, and an isocyanate having two or more functions At least one crosslinker selected from the group consisting of group containing compounds is preferred.
- polyfunctional (meth) acrylic monomer examples include trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, 1,2-ethylene glycol di (meth) acrylate, 1,6-hexanediol di Examples include (meth) acrylate, 1,12-dodecanediol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate and the like.
- polyfunctional (meth) acrylic oligomer examples include urethane (meth) acrylate or epoxy oligomerized by reacting (meth) acrylic acid or a hydroxyl group-containing (meth) acrylate with a compound having a plurality of isocyanate groups or glycidyl groups.
- examples include (meth) acrylates and the like.
- Examples of glycidyl group-containing compounds having two or more functional groups include 1,3-bis (N, N-diglycidylaminomethyl) cyclohexane, N, N, N ′, N′-tetraglycidyl-m-xylene diamine, N, N, N ', N'-tetraglycidylaminophenylmethane, triglycidyl isocyanurate, m-N, N-diglycidylaminophenyl glycidyl ether, N, N-diglycidyl toluidine, N, N-diglycidyl aniline, pentaerythritol polyglycidyl Ether, 1,6-hexanediol diglycidyl ether, etc. may be mentioned.
- isocyanate group-containing compound having two or more functional groups examples include tolylene diisocyanate (TDI), chlorophenylene diisocyanate, hexamethylene diisocyanate, tetramethylene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, isocyanate monomers such as hydrogenated diphenylmethane diisocyanate, and these isocyanate monomers
- TDI tolylene diisocyanate
- chlorophenylene diisocyanate chlorophenylene diisocyanate
- hexamethylene diisocyanate hexamethylene diisocyanate
- tetramethylene diisocyanate tetramethylene diisocyanate
- isophorone diisocyanate diphenylmethane diisocyanate
- isocyanate monomers such as hydrogenated diphenylmethane diisocyanate
- the amount of the crosslinking agent in the acrylic resin composition is preferably 0.01 to 10 parts by mass, preferably 0.03 to 1 parts by mass, with respect to 100 parts by mass of the polymer (all monomers before polymerization). Is more preferable, and 0.05 to 0.5 parts by mass is more preferable.
- the acrylic resin composition according to the present invention can contain a hollow microfiller as a filler from the viewpoint of imparting strength and reducing weight.
- hollow microfillers include hollow glass beads and hollow resin balloons. Among these, hollow glass beads are preferable from the viewpoint of chemical resistance and oil resistance.
- the average particle size of the hollow microfiller is preferably 1 to 100 ⁇ m, more preferably 10 to 50 ⁇ m.
- the content of the hollow microfiller in the acrylic resin composition is preferably 2 to 50 parts by mass, more preferably 5 to 30 parts by mass, and 10 to 20 parts by mass with respect to 100 parts by mass of the polymer. It is further preferred that Moreover, in order to improve the dispersibility to an acrylic resin composition, you may surface-treat a coupling process, a stearic-acid process, etc. with respect to a hollow micro filler suitably.
- the acrylic resin composition according to the present invention can contain a flame retardant.
- the flame retardant include phosphorus-based flame retardants such as ammonium polyphosphate and phosphoric esters, melamine-based flame retardants such as melamine sulfate and melamine polyphosphate, and metal hydroxides. Among these, ammonium polyphosphate is preferred.
- These flame retardants may be used alone or in combination of two or more.
- These flame retardants may be coated with a thermosetting resin for improving water resistance, or surface treatment such as microencapsulation may be performed.
- you may surface-treat a coupling agent, a stearic-acid process, etc. with respect to a flame retardant suitably.
- the content of the flame retardant in the acrylic resin composition may vary depending on the required degree of flame retardancy, but can be, for example, 20 to 200 parts by mass with respect to 100 parts by mass of the polymer.
- the flame retardant which can express a flame retardance by smaller amounts.
- the acrylic resin composition according to the present invention can contain thermally conductive particles.
- the heat conductive particles include metal powder, metal oxide, metal hydroxide, boron nitride, silicon nitride, carbon nitride and the like. These heat conductive particles may be used alone or in combination of two or more.
- the average particle diameter of the thermally conductive particles is preferably 1 to 100 ⁇ m, and more preferably 10 to 50 ⁇ m.
- the thermally conductive particles may be appropriately subjected to surface treatment such as coupling treatment or stearic acid treatment.
- the acrylic resin composition according to the present invention can optionally contain additives such as various silane coupling agents.
- the tensile strength after immersion of the acrylic resin composition according to the present invention in oleic acid for 24 hours is 50% or more of the value of the tensile strength before immersion in oleic acid, preferably 60% or more, 70 More preferably, it is at least%.
- the acrylic resin composition exhibits high chemical resistance and oil resistance when the ratio (hereinafter also referred to as the maintenance ratio) is 50% or more.
- the upper limit of the maintenance rate is not particularly limited, and is preferably higher.
- the acrylic resin composition according to the present invention is solid at normal temperature (15 to 25 ° C.), and the tensile strength can be measured.
- the tensile strength is a value measured according to JIS K 7114, and specifically, it is measured by the method described later.
- the acrylic resin composition according to the present invention not only has good resistance to oleic acid, but also to other industrial solvents such as toluene, and other oils such as gasoline, as shown in the examples described later. Even in contrast, they exhibit higher resistance than conventional acrylic resin compositions.
- the pressure-sensitive adhesive composition according to the present invention comprises the acrylic resin composition according to the present invention.
- the pressure-sensitive adhesive sheet substrate according to the present invention comprises the acrylic resin composition according to the present invention.
- the pressure-sensitive adhesive sheet according to the present invention comprises the pressure-sensitive adhesive composition according to the present invention and / or the pressure-sensitive adhesive sheet substrate according to the present invention.
- the pressure-sensitive adhesive sheet according to the present invention comprises, for example, a substrate for a pressure-sensitive adhesive sheet, which is a support, and a pressure-sensitive adhesive layer (resin layer) comprising a pressure-sensitive adhesive composition provided on the pressure-sensitive adhesive sheet substrate. It can.
- the pressure-sensitive adhesive sheet substrate and / or the pressure-sensitive adhesive composition is a pressure-sensitive adhesive sheet substrate and / or a pressure-sensitive adhesive composition according to the present invention.
- the pressure-sensitive adhesive layer may be provided only on one side of the pressure-sensitive adhesive sheet substrate, or may be provided on both sides.
- the pressure-sensitive adhesive layer may be directly bonded to the pressure-sensitive adhesive sheet substrate, or may be indirectly bonded via a primer layer or the like.
- the pressure-sensitive adhesive sheet according to the present invention may be provided on one side of a release sheet, and the release sheet may be peeled off at the time of use as an adhesive sheet.
- the base material for pressure sensitive adhesive sheets concerning the present invention can contain the acrylic resin composition concerning the present invention as acrylic foam.
- a method for producing an acrylic foam for example, JP-A-2012-153900 discloses an acrylic foam pressure-sensitive adhesive which has a low density and in which cells are finely and uniformly dispersed, and a method for producing the same.
- a foaming agent is added and it is made to foam at the time of sheet formation, the method of adding the hollow micro filler mentioned above, and making it a sheet etc. are mentioned.
- the substrate for pressure sensitive adhesive sheet for example, various films such as polyester, polyimide and polyolefin, nonwoven fabrics such as rayon and manila paper, metal foil , Woven cloth and the like.
- the thickness of the pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive composition according to the present invention is not particularly limited, and can be, for example, 0.1 to 5 mm, and preferably 0.1 to 1 mm.
- the pressure-sensitive adhesive sheet according to the present invention can be suitably used, for example, for bonding of respective members in electronic device parts, automobile parts, construction materials and the like.
- evaluation test method The following evaluation items were performed according to JIS K 7114 “Test method for determining the immersion effect in plastic-liquid chemicals”.
- Dimension change rate [(width of test sample after immersion) ⁇ (width of test sample before immersion (10 mm)) / width of test sample before immersion (10 mm) ⁇ 100 (%).
- Mass change rate [(mass of test sample after immersion) ⁇ (mass of test sample before immersion)] / mass of test sample before immersion ⁇ 100 (%).
- Example 1 In a reaction vessel equipped with a stirrer, reflux condenser, thermometer, UV lamp and nitrogen gas inlet, 60.0 parts by mass of 2-methoxyethyl acrylate, 27.5 parts by mass of 2-ethylhexyl acrylate, acrylic acid 12.4. 5 parts by mass, 0.01 parts by mass of Irgacure 1173 (trade name, manufactured by BASF Japan Ltd.) as a photopolymerization initiator, and 0.01 parts by mass of n-dodecyl mercaptan as a chain transfer agent are added to prepare a monomer composition did.
- the monomer composition was irradiated with UV light under a nitrogen atmosphere to polymerize a part of the monomers to prepare a syrupy composition.
- the concentration of the polymer in the syrupy composition was about 13% by mass, and the weight average molecular weight of the polymer was about 850,000.
- 1,6-hexanediol diacrylate (trade name: NK ester A-HD-N, manufactured by Shin-Nakamura Chemical Co., Ltd.) as a crosslinking agent with respect to 100 parts by mass of the syrupy composition
- a photopolymerization initiator 0.5 parts by mass of Irgacure 1173 (trade name, manufactured by BASF Japan Ltd.) was added and uniformly stirred. The air bubble mixed at the time of stirring and mixing was removed by degassing operation, and the coating liquid was prepared.
- the coating liquid was coated on a 50 ⁇ m thick polyethylene terephthalate (PET) film whose surface was treated with a release agent so that the thickness of the obtained resin layer was 0.5 mm.
- PET polyethylene terephthalate
- a PET film having a thickness of 50 ⁇ m was laminated on the layer made of the coating liquid and then irradiated with ultraviolet rays to produce a resin sheet having a resin layer made of the acrylic resin composition according to the present invention.
- the evaluation test was performed on the resin sheet. The results are shown in Table 1.
- Examples 2 to 8, Comparative Examples 1 to 5 A resin sheet was produced and evaluated in the same manner as in Example 1 except that the type and amount of monomers in the monomer composition and the type and amount of crosslinking agent were changed as shown in Table 1. The results are shown in Table 1.
- Example 2 and 5 and Comparative Example 2 a glass balloon (trade name: a hollow glass bead as a filler) with respect to 100 parts by mass of the total of the monomers (obtained polymer) at the time of preparation of the syrupy composition. 15.0 parts by mass of Sphericel 34P30, manufactured by Potters Barrotini, average particle diameter: 35 ⁇ m) was added. In addition, in the evaluation of the tensile strength after gasoline and toluene immersion of Comparative Examples 4 and 5, since the resin sheet had broken before setting to a measuring machine, it was not able to measure.
- Example 9 In a reaction vessel equipped with a condenser, a stirrer and a thermometer, 60.0 parts by mass of 2-methoxyethyl acrylate, 27.5 parts by mass of 2-ethylhexyl acrylate, 12.5 parts by mass of acrylic acid, and polymerization start 0.2 parts by mass of 2,2'-azobisisobutyronitrile as an agent was dissolved in 100 parts by mass of ethyl acetate. After nitrogen substitution, polymerization was carried out at 68 ° C. for 4 hours, and 0.2 parts by mass of 2,2′-azobisisobutyronitrile was further added, followed by polymerization at 80 ° C. for 2 hours.
- the concentration of the polymer in the obtained solution was about 50% by mass, and the weight average molecular weight of the polymer was about 800,000.
- To the solution was added 0.08 parts by mass of a tetrafunctional glycidyl compound (trade name: Tetrad-X, manufactured by Mitsubishi Gas Chemical Co., Ltd.) as a crosslinking agent, and mixed to prepare a coating liquid.
- a tetrafunctional glycidyl compound (trade name: Tetrad-X, manufactured by Mitsubishi Gas Chemical Co., Ltd.) as a crosslinking agent
- the coating solution is coated on a 50 ⁇ m thick polyethylene terephthalate (PET) film whose surface has been treated with a release agent so that the thickness of the obtained resin layer is 0.1 mm, Dried. This was repeated 5 times, and the resin layer was laminated so as to have a thickness of 0.5 mm, to produce a resin sheet having a resin layer composed of the acrylic resin composition according to the present invention.
- the evaluation test was performed on the resin sheet. The results are shown in Table 1.
- 2-MEA 2-methoxyethyl acrylate
- 2-EHA 2-ethylhexyl acrylate
- n-BA n-butyl acrylate
- AA acrylic acid
- ACMO acryloyl morpholine
- HDDA 1,6-hexanediol diacrylate
- Tetrad-X trade name, manufactured by Mitsubishi Gas Chemical Co., Ltd. , N, N, N ', N'-tetraglycidyl-m-xylenediamine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Adhesive Tapes (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
で表されるモノマー由来の単位を含むポリマーを含むアクリル樹脂組成物であって、
前記ポリマーを構成する全モノマー単位100質量%に対する、前記ポリマーに含まれる前記式(1)で表されるモノマー由来の単位の割合が40~99質量%であり、
前記アクリル樹脂組成物をオレイン酸に24時間浸漬した後の引張強度が、オレイン酸に浸漬する前の引張強度の値の50%以上である。
本発明に係るアクリル樹脂組成物は、前記式(1)で表されるモノマー由来の単位を含むポリマーを含む。ここで、前記ポリマーを構成する全モノマー単位100質量%に対する、前記ポリマーに含まれる前記式(1)で表されるモノマー由来の単位の割合は40~99質量%である。また、前記アクリル樹脂組成物をオレイン酸に24時間浸漬した後の引張強度は、オレイン酸に浸漬する前の引張強度の値の50%以上である。
前記式(1)において、R1は水素原子又はメチル基を示す。R2は炭素数2~4のアルキレン基を示し、炭素数2又は3のアルキレン基が好ましく、エチレン基がより好ましい。R3は炭素数1~10のアルキル基を示し、炭素数1~5のアルキル基が好ましく、炭素数1~3のアルキル基がより好ましい。nは1~20の整数を示し、1~15の整数が好ましく、1~10の整数がより好ましい。
前記ポリマーは、さらに(メタ)アクリル酸アルキルエステル由来の単位を含むことができる。前記ポリマーが(メタ)アクリル酸アルキルエステル由来の単位を含むことにより、多用途への展開が可能なアクリル樹脂組成物が得られる。(メタ)アクリル酸アルキルエステルの具体例としては、(メタ)アクリル酸メチル、(メタ)アクリル酸エチル、(メタ)アクリル酸プロピル、(メタ)アクリル酸ブチル、(メタ)アクリル酸イソブチル、(メタ)アクリル酸ターシャリーブチル、(メタ)アクリル酸イソブチル、(メタ)アクリル酸ヘキシル、(メタ)アクリル酸イソヘキシル、(メタ)アクリル酸オクチル、(メタ)アクリル酸イソオクチル、(メタ)アクリル酸エチルヘキシル、(メタ)アクリル酸ノニル、(メタ)アクリル酸イソノニル、(メタ)アクリル酸デシル、(メタ)アクリル酸イソデシル、(メタ)アクリル酸ドデシル、(メタ)アクリル酸イソドデシル、イソボルニル(メタ)アクリレート、シクロヘキシル(メタ)アクリレートなどが挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。
前記ポリマーは、さらにカルボン酸含有(メタ)アクリルモノマー由来の単位を含むことが好ましい。前記ポリマーがカルボン酸含有(メタ)アクリルモノマー由来の単位を含むことにより、アクリル樹脂組成物の強度をより向上させることができる。カルボン酸含有(メタ)アクリルモノマーの具体例としては、(メタ)アクリル酸、(メタ)アクリル酸β-カルボキシエチル、イタコン酸、クロトン酸、マレイン酸、フマル酸などが挙げられる。これらの中でも、アクリル樹脂組成物の強度がより高い観点から(メタ)アクリル酸が好ましい。これらは一種を用いてもよく、二種以上を併用してもよい。
前記ポリマーは、さらに窒素含有アクリルモノマー由来の単位を含むことが好ましい。前記ポリマーが窒素含有アクリルモノマー由来の単位を含むことにより、アクリル樹脂組成物の強度及び耐熱性を向上させることができ、耐薬品性及び耐油性も向上する。窒素含有アクリルモノマーの具体例としては、(メタ)アクリルアミド、N-イソプロピル(メタ)アクリルアミドなどのN-アルキル置換(メタ)アクリルアミド、N,N-ジメチル(メタ)アクリルアミド、N,N-ジエチル(メタ)アクリルアミドなどのN,N-ジアルキル置換(メタ)アクリルアミド、アクリロイルモルフォリン、ビニルピリジン、N-ビニルピロリドン、(メタ)アクリル酸アミノエチル、(メタ)アクリル酸ジメチルアミノエチル、(メタ)アクリル酸ジメチルアミノプロピルなどが挙げられる。これらの中でも、汎用性や工業製品化の観点から、(メタ)アクリルアミド、N-アルキル置換(メタ)アクリルアミド、N,N-ジアルキル置換(メタ)アクリルアミド、アクリロイルモルフォリンが好ましい。これらは一種を用いてもよく、二種以上を併用してもよい。
前記ポリマーは、前述したモノマー由来の単位以外にも、例えば(メタ)アクリル酸-2-ヒドロキシエチル、(メタ)アクリル酸-2-ヒドロキシプロピル、(メタ)アクリル酸-2-ヒドロキシブチル、(メタ)アクリル酸-4-ヒドロキシブチル、(メタ)アクリル酸-2-ヒドロキシヘキシル、(メタ)アクリル酸とポリエチレングリコール又はポリプロピレングリコールとのモノエステルなどの水酸基を含有する共重合性モノマー等の由来の単位を含むことができる。
上述したモノマーを含むモノマー組成物の重合方法は特に限定されず、例えば溶液重合、塊状重合、懸濁重合、乳化重合などの各種の重合方法において、光重合又は熱重合などの手段を用いて行うことができる。さらにはガンマ線のような放射線による重合や、電子線重合も用いることができる。光重合は、例えば光重合開始剤の存在下において、モノマー組成物にUV線を照射して行うことができる。熱重合は、例えば熱重合開始剤の存在下において、モノマー組成物を50~200℃に加熱して行うことができる。
本発明に係るアクリル樹脂組成物は、さらに架橋剤を含むことが、架橋構造を形成できる観点から好ましい。架橋剤としては、アクリル樹脂組成物との反応性の観点から、多官能性(メタ)アクリルモノマー、多官能性(メタ)アクリルオリゴマー、2官能以上のグリシジル基含有化合物、及び2官能以上のイソシアネート基含有化合物からなる群から選択される少なくとも一種の架橋剤が好ましい。
本発明に係るアクリル樹脂組成物は、強度付与や軽量化の観点から、充填剤として中空マイクロフィラーを含むことができる。中空マイクロフィラーとしては、中空ガラスビーズ、中空樹脂バルーン等が挙げられる。これらの中でも、耐薬品性及び耐油性の観点から中空ガラスビーズが好ましい。中空マイクロフィラーの平均粒子径としては、1~100μmが好ましく、10~50μmがより好ましい。アクリル樹脂組成物中の中空マイクロフィラーの含有量は、前記ポリマー100質量部に対して2~50質量部であることが好ましく、5~30質量部であることがより好ましく、10~20質量部であることがさらに好ましい。また、アクリル樹脂組成物への分散性を向上させるために、中空マイクロフィラーに対してカップリング処理、ステアリン酸処理等の表面処理を適宜行ってもよい。
本発明に係るアクリル樹脂組成物は、難燃剤を含むことができる。難燃剤としては、ポリリン酸アンモニウム、リン酸エステル類などのリン系難燃剤、硫酸メラミン、(ポリ化)リン酸メラミンなどのメラミン系難燃剤、金属水酸化物等が挙げられる。これらの中でも、ポリリン酸アンモニウムが好ましい。これらの難燃剤は一種を用いてもよく、二種以上を併用してもよい。耐水性を向上させるための熱硬化性樹脂により、これらの難燃剤を被覆してもよく、マイクロカプセル化等の表面処理を行ってもよい。また、アクリル樹脂組成物への分散性を向上させるために、難燃剤に対してカップリング処理、ステアリン酸処理等の表面処理を適宜行ってもよい。
本発明に係るアクリル樹脂組成物は、熱伝導性粒子を含むことができる。熱伝導性粒子としては、金属粉、金属酸化物、金属水酸化物、窒化ホウ素、窒化ケイ素、窒化炭素などが挙げられる。これらの熱伝導性粒子は一種を用いてもよく、二種以上を併用してもよい。熱伝導性粒子の平均粒子径は1~100μmが好ましく、10~50μmがより好ましい。アクリル樹脂組成物への分散性を向上させるために、熱伝導性粒子に対してカップリング処理、ステアリン酸処理等の表面処理を適宜行ってもよい。
本発明に係るアクリル樹脂組成物は、必要に応じて、各種シランカップリング剤などの添加剤を含有することができる。
本発明に係るアクリル樹脂組成物をオレイン酸に24時間浸漬した後の引張強度は、オレイン酸に浸漬する前の引張強度の値の50%以上であり、60%以上であることが好ましく、70%以上であることがより好ましい。この割合(以下、維持率とも示す)が50%以上であることにより、アクリル樹脂組成物が高い耐薬品性及び耐油性を示す。維持率の上限は特に限定されず、高いほうが好ましい。なお、本発明に係るアクリル樹脂組成物は常温(15~25℃)において固体であり、引張強度が測定可能である。該引張強度はJIS K 7114に準じて測定される値であり、具体的には後述する方法により測定される。本発明に係るアクリル樹脂組成物は、オレイン酸に対する耐性が良好であるだけでなく、後述する実施例にも示されるように、トルエン等の他の工業用溶剤、ガソリン等の他の油類に対しても、従来のアクリル樹脂組成物よりも高い耐性を示す。
本発明に係る粘着剤組成物は、本発明に係るアクリル樹脂組成物からなる。本発明に係る粘着シート用基材は、本発明に係るアクリル樹脂組成物を含む。本発明に係る粘着シートは、本発明に係る粘着剤組成物、及び/又は、本発明に係る粘着シート用基材を有する。
以下の評価項目は、JIS K 7114「プラスチック-液体薬品への浸漬効果を求める試験方法」に準じて行った。
初期:10mm×100mmに切断した樹脂シートを、ストログラフにて引張速度300mm/minで引っ張り、破断した時の強度を測定した。
10mm×100mmに切断した樹脂シートを23℃にて各薬品(オレイン酸、ガソリン、トルエン)に24時間浸漬し、取出した直後に試験サンプルの幅を測定し、寸法変化率を下記式にて算出した。
10mm×100mmに切断した樹脂シートの質量を測定した。その後、該試験サンプルを23℃にて各薬品(オレイン酸、ガソリン、トルエン)に24時間浸漬し、取出した直後に試験サンプル表面の薬品をふき取り、質量を測定した。浸漬前からの質量変化率を下記式にて算出した。
攪拌機、還流冷却器、温度計、UVランプ及び窒素ガス導入口を備えた反応容器に、アクリル酸2-メトキシエチル60.0質量部、アクリル酸2-エチルヘキシル27.5質量部、アクリル酸12.5質量部、光重合開始剤としてイルガキュア1173(商品名、BASFジャパン社製)0.01質量部、及び連鎖移動剤としてn-ドデシルメルカプタン0.01質量部を添加して、モノマー組成物を調製した。該モノマー組成物に窒素雰囲気下でUV光を照射することでモノマーの一部を重合し、シロップ状組成物を調製した。該シロップ状組成物中のポリマーの濃度は約13質量%であり、該ポリマーの重量平均分子量は約85万であった。
モノマー組成物中のモノマーの種類と量、架橋剤の種類と量を表1のように変更した以外は、実施例1と同様に樹脂シートを作製し、評価した。結果を表1に示す。
冷却管、撹拌機及び温度計を備えた反応容器内で、アクリル酸2-メトキシエチル60.0質量部、アクリル酸2-エチルヘキシル27.5質量部、アクリル酸12.5質量部、及び重合開始剤として2,2’-アゾビスイソブチロニトリル0.2質量部を、酢酸エチル100質量部に溶解した。窒素置換後、68℃で4時間重合し、さらに2,2’-アゾビスイソブチロニトリル0.2質量部を添加して80℃で2時間重合した。得られた溶液中のポリマーの濃度は約50質量%であり、該ポリマーの重量平均分子量は約80万であった。該溶液に、架橋剤として4官能グリシジル化合物(商品名:Tetrad-X、三菱ガス化学(株)製)を0.08質量部添加し、混合して塗工液を調製した。
AM-90G :アクリル酸メトキシ(ポリ)エチレングリコール(n=9)
2-EHA :アクリル酸2-エチルヘキシル
n-BA :n-ブチルアクリレート
AA :アクリル酸
ACMO :アクリロイルモルフォリン
HDDA :1,6-ヘキサンジオールジアクリレート
Tetrad-X:商品名、三菱ガス化学(株)製、N,N,N’,N’-テトラグリシジル-m-キシレンジアミン
Claims (14)
- さらに架橋剤を含む請求項1に記載のアクリル樹脂組成物。
- 前記架橋剤が、多官能性(メタ)アクリルモノマー、多官能性(メタ)アクリルオリゴマー、2官能以上のグリシジル基含有化合物、及び2官能以上のイソシアネート基含有化合物からなる群から選択される少なくとも一種の架橋剤である請求項2に記載のアクリル樹脂組成物。
- 前記ポリマーが、さらに(メタ)アクリル酸アルキルエステル由来の単位を含み、
前記ポリマーを構成する全モノマー単位100質量%に対する、前記ポリマーに含まれる前記(メタ)アクリル酸アルキルエステル由来の単位の割合が0.1~40質量%である請求項1から3のいずれか一項に記載のアクリル樹脂組成物。 - 前記ポリマーが、さらにカルボン酸含有(メタ)アクリルモノマー由来の単位を含み、
前記ポリマーを構成する全モノマー単位100質量%に対する、前記ポリマーに含まれる前記カルボン酸含有(メタ)アクリルモノマー由来の単位の割合が0.5~20質量%である請求項1から4のいずれか一項に記載のアクリル樹脂組成物。 - 前記カルボン酸含有(メタ)アクリルモノマーが(メタ)アクリル酸である請求項5に記載のアクリル樹脂組成物。
- 前記式(1)で表されるモノマーが、(メタ)アクリル酸メトキシエチル、(メタ)アクリル酸エトキシエチル、(メタ)アクリル酸メトキシ(ポリ)エチレングリコール、及び(メタ)アクリル酸エトキシ(ポリ)エチレングリコールからなる群から選択される少なくとも一種のモノマーである請求項1から6のいずれか一項に記載のアクリル樹脂組成物。
- 前記ポリマーが、さらに窒素含有アクリルモノマー由来の単位を含み、
前記ポリマーを構成する全モノマー単位100質量%に対する、前記ポリマーに含まれる前記窒素含有アクリルモノマー由来の単位の割合が1~50質量%である請求項1から7のいずれか一項に記載のアクリル樹脂組成物。 - 前記窒素含有アクリルモノマーが、(メタ)アクリルアミド、N-アルキル置換(メタ)アクリルアミド、N,N-ジアルキル置換(メタ)アクリルアミド、及びアクリロイルモルフォリンからなる群から選択される少なくとも一種のモノマーである請求項8に記載のアクリル樹脂組成物。
- さらに、平均粒子径が1~100μmの中空マイクロフィラーを含む請求項1から9のいずれか一項に記載のアクリル樹脂組成物。
- 前記中空マイクロフィラーが中空ガラスビーズであり、前記中空マイクロフィラーの含有量が、前記ポリマー100質量部に対して2~50質量部である請求項10に記載のアクリル樹脂組成物。
- 請求項1から11のいずれか一項に記載のアクリル樹脂組成物からなる粘着剤組成物。
- 請求項1から11のいずれか一項に記載のアクリル樹脂組成物を含む粘着シート用基材。
- 請求項12に記載の粘着剤組成物、及び/又は、請求項13に記載の粘着シート用基材を有する粘着シート。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020207002093A KR102285181B1 (ko) | 2017-06-22 | 2017-06-22 | 아크릴 수지 조성물, 점착제 조성물, 점착 시트용 기재 및 점착 시트 |
JP2019524791A JP7364465B2 (ja) | 2017-06-22 | 2017-06-22 | アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート |
CN201780092223.7A CN110770295A (zh) | 2017-06-22 | 2017-06-22 | 丙烯酸类树脂组合物、粘合剂组合物、粘合片用基材及粘合片 |
PCT/JP2017/022966 WO2018235217A1 (ja) | 2017-06-22 | 2017-06-22 | アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート |
US16/624,222 US11958967B2 (en) | 2017-06-22 | 2017-06-22 | Acrylic resin composition, adhesive agent composition, base for adhesive sheet, and adhesive sheet |
TW107121437A TWI682020B (zh) | 2017-06-22 | 2018-06-22 | 丙烯酸樹脂組成物、黏著劑組成物、黏著片用基材及黏著片 |
JP2021185845A JP7293313B2 (ja) | 2017-06-22 | 2021-11-15 | アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/022966 WO2018235217A1 (ja) | 2017-06-22 | 2017-06-22 | アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018235217A1 true WO2018235217A1 (ja) | 2018-12-27 |
Family
ID=64736943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/022966 WO2018235217A1 (ja) | 2017-06-22 | 2017-06-22 | アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート |
Country Status (6)
Country | Link |
---|---|
US (1) | US11958967B2 (ja) |
JP (1) | JP7364465B2 (ja) |
KR (1) | KR102285181B1 (ja) |
CN (1) | CN110770295A (ja) |
TW (1) | TWI682020B (ja) |
WO (1) | WO2018235217A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022191147A1 (ja) * | 2021-03-11 | 2022-09-15 | Kjケミカルズ株式会社 | コーティング組成物、該コーティング組成物からなる粘着性又は非粘着性コート層、及びこれらのコート層を備える積層体 |
WO2023248906A1 (ja) * | 2022-06-21 | 2023-12-28 | 株式会社レゾナック | 断熱層と粘着層とを備えるシート |
JP7474118B2 (ja) | 2019-05-30 | 2024-04-24 | 積水化学工業株式会社 | 粘着剤及び粘着テープ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019188525A1 (ja) * | 2018-03-26 | 2019-10-03 | 日本ゼオン株式会社 | アクリルゴム、アクリルゴム組成物、アクリルゴム架橋物、シール材、及びホース材 |
WO2020213662A1 (ja) * | 2019-04-16 | 2020-10-22 | 信越化学工業株式会社 | ペリクル用粘着剤、ペリクル、ペリクル付露光原版、半導体装置の製造方法、液晶表示板の製造方法、露光原版の再生方法及び剥離残渣低減方法 |
CN113429919A (zh) * | 2021-07-15 | 2021-09-24 | 宁波润禾高新材料科技股份有限公司 | 一种光固化丙烯酸发泡压敏胶的合成工艺 |
KR102677695B1 (ko) * | 2022-05-09 | 2024-06-25 | 주식회사 티티티 | 점착제 조성물 및 이를 포함하는 점착성 가공품 |
KR102677480B1 (ko) * | 2022-05-09 | 2024-06-25 | 주식회사 티티티 | 점착제 조성물 및 이를 포함하는 점착성 가공품 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001123136A (ja) * | 1999-10-28 | 2001-05-08 | Soken Chem & Eng Co Ltd | 耐湿粘着シートおよびその用途 |
JP2002327160A (ja) * | 2001-05-07 | 2002-11-15 | Soken Chem & Eng Co Ltd | 粘着剤組成物及び該組成物を用いたディスプレイ用粘着シート |
JP2016069480A (ja) * | 2014-09-29 | 2016-05-09 | ニチバン株式会社 | 粘着剤組成物 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008115272A (ja) * | 2006-11-04 | 2008-05-22 | Nitto Denko Corp | 熱剥離性両面粘着シート及び被加工体の加工方法 |
JP5582327B2 (ja) | 2008-03-07 | 2014-09-03 | Dic株式会社 | 耐油性両面粘着テープ |
KR20110002857A (ko) * | 2008-04-11 | 2011-01-10 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 투명 접착 시트 및 이를 포함하는 이미지 디스플레이 소자 |
JP4800363B2 (ja) | 2008-09-26 | 2011-10-26 | 日東電工株式会社 | 光学部材貼り合わせ用粘着シート |
JP2011148889A (ja) | 2010-01-21 | 2011-08-04 | Kansai Paint Co Ltd | 親水化処理剤 |
JP5059137B2 (ja) | 2010-01-29 | 2012-10-24 | 大成ファインケミカル株式会社 | 帯電防止性ドライラミネート用水性接着剤 |
JP6022884B2 (ja) | 2011-10-14 | 2016-11-09 | 日東電工株式会社 | 両面粘着テープ |
JP2013199521A (ja) | 2012-03-23 | 2013-10-03 | Dexerials Corp | 光学用粘着シートを形成するための熱又は光硬化性樹脂組成物及び光学用粘着シート |
EP2803712A1 (en) * | 2013-05-17 | 2014-11-19 | 3M Innovative Properties Company | Multilayer Pressure Sensitive Adhesive Assembly |
JP6202958B2 (ja) * | 2013-09-13 | 2017-09-27 | 日東電工株式会社 | 粘着シート |
JP6470523B2 (ja) * | 2014-08-08 | 2019-02-13 | 日東電工株式会社 | 粘着シート |
CN106795415B (zh) | 2014-10-15 | 2019-04-02 | 综研化学株式会社 | 粘合剂层、带粘合剂层的偏振片和层叠体 |
JP6113889B2 (ja) | 2015-09-18 | 2017-04-12 | 日東電工株式会社 | 粘着シート |
JP6037485B2 (ja) | 2015-12-15 | 2016-12-07 | オリジン電気株式会社 | 熱及び光硬化性塗料組成物及び塗膜形成方法 |
-
2017
- 2017-06-22 WO PCT/JP2017/022966 patent/WO2018235217A1/ja active Application Filing
- 2017-06-22 CN CN201780092223.7A patent/CN110770295A/zh active Pending
- 2017-06-22 KR KR1020207002093A patent/KR102285181B1/ko active IP Right Grant
- 2017-06-22 JP JP2019524791A patent/JP7364465B2/ja active Active
- 2017-06-22 US US16/624,222 patent/US11958967B2/en active Active
-
2018
- 2018-06-22 TW TW107121437A patent/TWI682020B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001123136A (ja) * | 1999-10-28 | 2001-05-08 | Soken Chem & Eng Co Ltd | 耐湿粘着シートおよびその用途 |
JP2002327160A (ja) * | 2001-05-07 | 2002-11-15 | Soken Chem & Eng Co Ltd | 粘着剤組成物及び該組成物を用いたディスプレイ用粘着シート |
JP2016069480A (ja) * | 2014-09-29 | 2016-05-09 | ニチバン株式会社 | 粘着剤組成物 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7474118B2 (ja) | 2019-05-30 | 2024-04-24 | 積水化学工業株式会社 | 粘着剤及び粘着テープ |
WO2022191147A1 (ja) * | 2021-03-11 | 2022-09-15 | Kjケミカルズ株式会社 | コーティング組成物、該コーティング組成物からなる粘着性又は非粘着性コート層、及びこれらのコート層を備える積層体 |
JPWO2022191147A1 (ja) * | 2021-03-11 | 2022-09-15 | ||
JP7429483B2 (ja) | 2021-03-11 | 2024-02-08 | Kjケミカルズ株式会社 | コーティング組成物、該コーティング組成物からなる粘着性又は非粘着性コート層、及びこれらのコート層を備える積層体 |
WO2023248906A1 (ja) * | 2022-06-21 | 2023-12-28 | 株式会社レゾナック | 断熱層と粘着層とを備えるシート |
Also Published As
Publication number | Publication date |
---|---|
KR102285181B1 (ko) | 2021-08-02 |
TWI682020B (zh) | 2020-01-11 |
JP7364465B2 (ja) | 2023-10-18 |
CN110770295A (zh) | 2020-02-07 |
US11958967B2 (en) | 2024-04-16 |
KR20200020885A (ko) | 2020-02-26 |
JPWO2018235217A1 (ja) | 2020-04-16 |
US20210147670A1 (en) | 2021-05-20 |
TW201905136A (zh) | 2019-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11958967B2 (en) | Acrylic resin composition, adhesive agent composition, base for adhesive sheet, and adhesive sheet | |
TWI702272B (zh) | 黏著片材、具有黏著劑層之積層體的製造方法、具有黏著劑層之積層體、影像顯示裝置及觸控面板 | |
KR101364948B1 (ko) | 아크릴계 점착제 조성물 및 아크릴계 점착 테이프 | |
JP5611883B2 (ja) | 再剥離用水分散型アクリル系粘着剤組成物及び粘着シート | |
KR101353747B1 (ko) | 아크릴계 점착 테이프 | |
JP5117532B2 (ja) | 再剥離用水分散型アクリル系粘着剤組成物及び粘着シート | |
JP7293313B2 (ja) | アクリル樹脂組成物、粘着剤組成物、粘着シート用基材及び粘着シート | |
WO2011132566A1 (ja) | 再剥離用水分散型アクリル系粘着剤組成物及び粘着シート | |
KR20130106376A (ko) | 아크릴계 점착제 조성물, 아크릴계 점착제층 및 아크릴계 점착 테이프 | |
JP6263342B2 (ja) | 再剥離用水分散型粘着剤組成物、粘着シート及び光学部材 | |
JP6023538B2 (ja) | 再剥離用水分散型アクリル系粘着剤組成物及び粘着シート | |
KR102154585B1 (ko) | 점착 부여제, 수성 점착제 및 점착 시트 | |
CN109196067B (zh) | 丙烯酸类橡胶泡沫和包含其的双面胶带 | |
JP2009108113A (ja) | 感圧式接着剤および感圧式接着フィルム | |
KR20130070570A (ko) | 아크릴계 점착 테이프 | |
JP2009155514A (ja) | 粘着剤、粘着フィルム、及び光学部材用表面保護フィルム | |
JP2012025808A (ja) | アクリル系粘着剤、粘着シート、アクリル系樹脂組成物 | |
KR20170089765A (ko) | 점착제 조성물, 점착 부재, 광학 부재, 및 전자 부재 | |
JP5888839B2 (ja) | アクリル系粘着剤の製造方法、粘着シートの製造方法 | |
JP2020023596A (ja) | 粘着付与樹脂水性分散体、水性粘着剤及び粘着シート | |
KR20170089764A (ko) | 점착제 조성물, 점착 부재, 광학 부재, 및 전자 부재 | |
JP6350845B1 (ja) | 粘着剤組成物、粘着シート、及び粘着剤の製造方法 | |
JP7112227B2 (ja) | アクリル系粘着剤組成物及び粘着シート | |
KR20190065078A (ko) | 아크릴계 에멀젼 점착제 조성물 | |
TW202309563A (zh) | 附有覆蓋膜之光學膜 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17914266 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2019524791 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20207002093 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17914266 Country of ref document: EP Kind code of ref document: A1 |