WO2022270333A1 - 回路基板用樹脂膜の剥離剤および回路基板の製造方法 - Google Patents
回路基板用樹脂膜の剥離剤および回路基板の製造方法 Download PDFInfo
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- WO2022270333A1 WO2022270333A1 PCT/JP2022/023448 JP2022023448W WO2022270333A1 WO 2022270333 A1 WO2022270333 A1 WO 2022270333A1 JP 2022023448 W JP2022023448 W JP 2022023448W WO 2022270333 A1 WO2022270333 A1 WO 2022270333A1
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- WIPO (PCT)
- Prior art keywords
- resin film
- circuit board
- component
- release agent
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
- C11D1/8255—Mixtures of compounds all of which are non-ionic containing a combination of compounds differently alcoxylised or with differently alkylated chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0073—Anticorrosion compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2006—Monohydric alcohols
- C11D3/201—Monohydric alcohols linear
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2006—Monohydric alcohols
- C11D3/2017—Monohydric alcohols branched
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/28—Heterocyclic compounds containing nitrogen in the ring
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/40—Dyes ; Pigments
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
- H05K3/061—Etching masks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/26—Cleaning or polishing of the conductive pattern
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/288—Removal of non-metallic coatings, e.g. for repairing
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/22—Electronic devices, e.g. PCBs or semiconductors
Definitions
- the present invention relates to a release agent for a resin film for a circuit board and a method for manufacturing a circuit board.
- the electronic circuit member is formed by exposure patterning using a photosensitive resin.
- the photosensitive resin is required to have improved photoreactivity and strength after curing so as to enable fine exposure patterning.
- the photosensitive resin is also required to be easily peeled off and removed from the substrate after the exposure patterning process.
- Patent Document 1 a surfactant, an anti-corrosion agent and a water-soluble organic solvent, which are removers for a photoresist (photosensitive resin) applied to a substrate on which a conductive metal film containing aluminum, silver or the like is formed, are used.
- Patent Document 2 describes a water-based resin mask removing cleaning composition containing an inorganic alkali, a polyhydric alcohol and other organic solvents.
- Patent Document 3 describes a cleaning composition for removing a resin mask containing an inorganic alkali and a surfactant having an ethyleneoxy group.
- the aforementioned alternative stripping agent has insufficient ability to subdivide resin films such as photosensitive resin films, which is a feature of amine compounds. is difficult to sufficiently remove.
- the release agent described in Patent Document 1 has insufficient releasability of the resin film, and a residue of the resin film may remain on the circuit board.
- the cleaning composition described in Patent Document 2 the penetration of the active ingredient into the resin film is insufficient, and the releasability is insufficient due to the insufficient fragmentation performance of the resin film. A residue of the resin film sometimes remained on the circuit board.
- the detergent composition described in Patent Document 3 has improved permeability of the active ingredient to the resin film, the peelability of the resin film is still insufficient. However, there is a problem that a long time of treatment is required, resulting in a decrease in productivity.
- the present invention has been made in view of the above circumstances, and is capable of removing a resin film formed on a circuit board in a short period of time, and reducing residue on the circuit board by subdividing the resin film. It is an object of the present invention to provide a circuit board resin film release agent having high performance and low environmental load, a method for producing a circuit board, and a method for producing a circuit board using the release agent.
- a circuit board manufacturing method for solving the above problems, comprising the steps of: preparing a circuit board having a resin film formed on at least one surface thereof; and a step of causing
- a release agent for a resin film for a circuit board according to an embodiment of the present invention comprises a compound represented by formula (1) (component (A)) and or more and 6 or less and a molecular weight of 30 or more and 120 or less (component (B)), and a pH of 13.0 or more and less than 14.0.
- R 1 -O-(A 1 O)aH Formula (1) (In formula (1), R 1 represents a branched alkyl group having 6 to 10 carbon atoms, A 1 O represents an oxyalkylene group having 2 to 3 carbon atoms, and the average addition of the oxyalkylene group a, which is the number of moles, is a number of 2 or more and 15 or less.)
- R 1 represents a branched alkyl group having 6 or more and 10 or less carbon atoms.
- R 1 is preferably a branched alkyl group having 8 or more and 9 or less carbon atoms.
- the component (A) easily permeates the resin film, sufficiently subdivides the resin film and makes it easy to peel off, and the The residue can be reduced, the release agent is less prone to foaming, and the release agent is more stable during storage.
- component (A) can further enhance the peeling performance of the resin film because R1 is a branched alkyl group.
- the branched chain contained in R 1 is preferably an alkyl group having 1 or more and 3 or less carbon atoms, and is preferably a methyl branch or an ethyl branch.
- R 1 examples include an isooctyl group, a 2-ethylhexyl group, an isononyl group, a 3,5,5-trimethylhexyl group, an isodecyl group, and the like.
- a 1 O represents an oxyalkylene group having 2 or more and 3 or less carbon atoms.
- a 1 O may be only an oxyethylene group, may be only an oxypropylene group, or may contain both an oxyethylene group and an oxypropylene group.
- a 1 O preferably contains only oxyethylene groups or both oxyethylene and oxypropylene groups.
- a 1 O contains both an oxyethylene group and an oxypropylene group
- the oxyethylene group (EO group) alone or forming a block and the oxypropylene group (PO group) alone or forming a block are It is preferable that they are added in the order of 1 -O-EO group-PO group-H.
- Component (A), in which R 1 O has such a structure has particularly high permeability into the resin film, finely subdivides the resin film, and allows the resin film to be peeled off, thereby reducing residue on the circuit board. can be done.
- a 1 O contains both an oxyethylene group and an oxypropylene group
- a′/a′ where a′ is the average number of added moles of oxyethylene groups and a′′ is the average number of added moles of oxypropylene groups.
- ' is preferably 0.5 or more and 1.5 or less.
- the component (A) having a'/a'' within the above range has higher permeability into the resin film and can further reduce residue on the circuit board.
- the component (A) in which a′/a′′ is within the above range makes it difficult for the release agent to generate bubbles. You can reduce it and increase your productivity.
- the release agent may contain, as component (A), only one type of compound represented by formula (1), or may contain a plurality of types, but from the viewpoint of release performance, it is more preferable to contain a plurality of types. .
- a branched alkyl group (a1) in which R 1 has 6 to 8 carbon atoms and a branched alkyl group (a2) in which R 1 has 9 or 10 carbon atoms are combined. is more preferred, and a combination of a branched alkyl group having 8 carbon atoms and a branched alkyl group having 9 carbon atoms is even more preferred.
- the HLB value of component (A) is not particularly limited, and can be, for example, 5 or more and 13 or less.
- the content of component (A) with respect to the total mass of the release agent is 0.1% by mass or more and 5% by mass or less, preferably 0.5% by mass or more and 5% by mass or less, and 1% by mass or more and 2% by mass. % or less.
- the content of component (A) is 0.1% by mass or more, the permeability of the release agent to the resin film can be enhanced, and the residue on the circuit board can be further reduced.
- the content of component (A) is 10% by mass or less, the release agent has higher stability during storage.
- the stripping agent may contain only one type of the above-mentioned aliphatic alcohol as the component (B), or may contain a plurality of types, but it is more preferable to contain a plurality of types from the viewpoint of fragmentation performance.
- component (B) examples include methanol, ethanol, isopropyl alcohol, ethylene glycol, diethylene glycol, glycerin, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol. , ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, 3-methoxy-1-butanol, 3-methoxy-3-methyl-1-butanol, tetrahydrofurfuryl alcohol and the like.
- 3-methoxy-3-methyl-1-butanol, tetrahydrofurfuryl alcohol, glycerin, diethylene glycol and methanol are preferred, and 3-methoxy-3-methyl-1-butanol and glycerin are more preferred.
- the content of component (B) with respect to the total mass of the release agent is 5% by mass or more and 40% by mass or less, preferably 5% by mass or more and 35% by mass or less, and 5% by mass or more and 30% by mass or less. is more preferable.
- the content of component (B) is 5% by mass or more, the resin film can be sufficiently subdivided.
- the content of component (B) is 40% by mass or less, the resin film has high releasability and segmentation performance, and the storage stability of the release agent is higher.
- the release agent may contain an antirust agent (component (C)) in addition to the components described above.
- Component (C) can further improve the effects of the present invention.
- Component (C) is preferably a compound having a triazole ring, more preferably a compound having a benzotriazole structure, from the viewpoint of enhancing the peelability of the resin film, and is a compound represented by formula (2). is more preferred.
- R2 represents a hydrogen atom, a methyl group, or a carboxyl group.
- R 2 is preferably a hydrogen atom or a carboxy group from the viewpoint of further enhancing the water solubility of the component (C) and the releasability of the resin film.
- a hydrogen atom is more preferred.
- the content of component (C) relative to the total mass of the release agent is not particularly limited, but is preferably 0.5% by mass or more and 2% by mass or less, and is 0.5% by mass or more and 1.5% by mass or less. is more preferable, and more preferably 1.0% by mass or more and 1.5% by mass or less.
- the content of component (C) is 0.5% by mass or more, the storage stability of the release agent can be enhanced.
- the content of the component (C) is 0.5% by mass or more, the resin film can be sufficiently subdivided to facilitate peeling, and the residue on the circuit board can be reduced.
- the content of the component (C) is 2% by mass or less, it is difficult for the release agent to generate bubbles.
- the pH of the release agent is 13.0 or more and 14.0 or less, preferably 13.2 or more and 13.8 or less, and more preferably 13.4 or more and 13.6 or less.
- the pH of the stripping agent can be adjusted within the above range by adding a known alkaline component.
- the stripping agent may contain only one type of the alkaline component for adjusting the pH, or may contain a plurality of types.
- Examples of the organic alkaline component include monoethanolamine, diethanolamine, and triethanolamine.
- Examples of the inorganic alkaline components include sodium hydroxide, potassium hydroxide, lithium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, sodium silicate, potassium silicate, and the like.
- the organic alkali component is preferably sodium hydroxide, potassium hydroxide, sodium carbonate, or potassium carbonate, more preferably sodium hydroxide or potassium hydroxide, from the viewpoint of further increasing the peelability of the resin film. .
- the release agent may contain other components generally blended in conventional release agents for resin films for circuit boards.
- examples of the above other ingredients may include preservatives, thickeners, colorants, and the like.
- the stripping agent can be prepared by a known method of diluting the above components with water to an appropriate concentration to form an aqueous solution.
- water for dilution ion-exchanged water, distilled water, RO water, tap water, industrial water, and the like can be used.
- the water content relative to the total mass of the release agent is preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more. Although the content of water is not particularly limited, it is preferably 90% by mass or less.
- a release agent is used to remove a resin film temporarily formed on the surface of a circuit board in a known method of manufacturing a circuit board after performing necessary processing.
- the method for manufacturing the circuit board includes the steps of: forming a resin film on the surface of the circuit board; processing the circuit board having the resin film formed on at least one surface; and removing the resin film using a release agent.
- the resin film formed on the surface of the circuit board may be a negative resin film that is cured by an external stimulus such as light or heat, or a positive resin film that is dissolved by the external stimulus.
- a negative resin film is preferred.
- the negative resin film include a negative dry film resist and a negative liquid resist.
- the resin film after the processing can be removed.
- the contact may be performed by a known method such as immersing the circuit board in a stripping solution or spraying the circuit board with the stripping solution.
- the release agent dissolves the resin film at the interface between the circuit board and the resin film, or penetrates into the inside of the resin film to swell the resin film, thereby reducing the adhesion at the interface between the circuit board and the resin film. It is considered that the resin film is peeled off by applying the heat. In order to achieve these effects more fully, it is preferable to allow the release agent to sufficiently permeate the inside of the resin film so that a sufficient amount of the release agent reaches the interface between the circuit board and the resin film. Furthermore, the release agent subdivides the resin film by permeation, which is also considered to facilitate the release of the resin film.
- the temperature of the release agent when it is brought into contact with the resin film is preferably about 20 to 60°C.
- release agent 1-1 Materials 1-1-1. Alcohol Having Structure Represented by Formula (1) Compound A1, Compound A2 and Compound A1' shown in Table 1 were prepared. Compound A1 and compound A2 are compounds (component (A)) represented by formula (1), and compound A1' has a structure represented by formula (1), but since R 1 is different, component (A) is a compound that is not R 1 -O-(A 1 O)aH Formula (1)
- Table 1 shows the structure (functional group name) of R 1 in formula (1), the number of carbon atoms in R 1 , the structure of A 1 O, the number of EO groups and PO groups ( average value), a′/a′′ value (number of EO groups (average value)/number of PO groups (average value)), and number of a (average value).
- Table 2 shows the compound names, molecular weights, number of carbon atoms and number of hydroxyl groups of compounds B1 to B5 and compound B1'.
- Table 3 shows the compound names of compounds D1 to D3.
- release agent Dissolve each of the above components in water, add water so that the total amount is 100% by mass, and prepare a water-based release agent 1 to release agent 14 for circuit board resin film and circuit board resin. Film release agents 21 to 28 were prepared.
- the surface of the electronic circuit board on which the negative dry film resist was thermocompressed was irradiated with UV light, ( Irradiation time: 120 seconds, total light dose: about 22 mW), the above negative dry film resist was cured to obtain a circuit board on which a resin film (resin film for circuit board) was formed.
- the average value of the time required for the resin film to be completely removed visually was taken as the "stripping time" for the stripping solution.
- the average value of the four side lengths of the test piece measured by immersing the circuit board in a certain stripping solution is the "four side length of the stripped piece" produced by the stripping solution. did.
- each stripping solution was evaluated according to the following criteria.
- each stripping solution was evaluated according to the following criteria.
- each stripper was evaluated according to the following criteria.
- Tables 4 to 8 show the content of each of the above components contained in the release agents 1 to 15 and the release agents 21 to 28, the pH of each stripping solution, and the evaluation results of each stripping solution. show.
- the numerical values for the components in Tables 4 to 8 indicate the ratio (unit: % by mass) to the total mass of the release agent.
- the release agent containing component (A) and component (B) can release the resin film formed on the circuit board in a short period of time, and subdivides the resin film. It can be seen that the load on the environment is low because the performance is high and foaming is low.
- a release agent that can strip a resin film formed on a circuit board in a short period of time, has a high ability to subdivide the resin film, and has a low environmental load.
- INDUSTRIAL APPLICABILITY The present invention is expected to contribute to shortening the manufacturing time and reducing the manufacturing load of electronic circuit members, and to bring about further development in each field using electronic circuit members.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
Abstract
Description
R1-O-(A1O)a-H ・・・式(1)
(式(1)中、R1は炭素数が6以上10以下である分岐アルキル基を、A1Oは炭素数が2以上3以下であるオキシアルキレン基を示し、前記オキシアルキレン基の平均付加モル数であるaは2以上15以下の数である。)
R1-O-(A1O)a-H ・・・式(1)
(式(1)中、R1は炭素数が6以上10以下である分岐アルキル基を、A1Oは炭素数が2以上3以下であるオキシアルキレン基を示し、前記オキシアルキレン基の平均付加モル数であるaは2以上15以下の数である。)
成分(A)は、式(1)で示される化合物(ポリアルキレングリコール)である。成分(A)は、回路基板用樹脂膜(以下、単に「樹脂膜」ともいう。)を十分に細分化させて剥離させやすくし、回路基板上の残渣を少なくすることができる。
R1-O-(A1O)a-H ・・・式(1)
成分(B)は、炭素数が1以上6以下であり、かつ分子量が30以上120以下である脂肪族アルコールである。成分(B)は、回路基板からの樹脂膜の剥離性を高めることができ、一方で、剥離剤に泡を発生させにくく、かつ剥離剤の保存時の安定性をより高くする。
剥離剤は、上述した各成分のほかに、防錆剤(成分(C))を含んでいてもよい。成分(C)は、本発明の効果をさらに向上させることができる。
剥離剤のpHは、13.0以上14.0以下であり、13.2以上13.8以下であることが好ましく、13.4以上13.6以下であることがより好ましい。pHが上記範囲であると、樹脂膜の剥離性が十分に高まる。剥離剤のpHは、公知のアルカリ成分の添加により、上記範囲に調整することができる。
剥離剤は、上述した各成分のほかに、従来の回路基板用樹脂膜の剥離剤に一般的に配合されるその他の成分を含んでいてもよい。上記その他の成分の例には、防腐剤、増粘剤、着色剤などが配合されていてもよい。
剥離剤は、上記成分を水で適切な濃度に希釈して水溶液とする、公知の方法で調製することができる。上記希釈する水としては、イオン交換水、蒸留水、RO水、水道水、および工業用水などを使用することができる。
剥離剤は、回路基板の公知の製造方法において、回路基板の表面に一時的に形成された樹脂膜を、必要な加工を行った後に除去するために用いられる。
1-1.材料
1-1-1.式(1)で示す構造を有するアルコール
表1に示す化合物A1、化合物A2および化合物A1’を用意した。化合物A1および化合物A2は、式(1)で示される化合物(成分(A))であり、化合物A1’は、式(1)で示される構造を有するが、R1が異なるため成分(A)ではない化合物である。
R1-O-(A1O)a-H ・・・式(1)
表2に記載の化合物B1~化合物B5および化合物B1’を用意した。化合物B1~化合物B5は、炭素数が1以上6以下であり、かつ分子量が30以上120以下である脂肪族アルコール(成分(B))であり、化合物B1’は、成分(B)ではない有機溶媒である。
ベンゾトリアゾールを用意した。ベンゾトリアゾールは、式(2)においてR2がHの化合物(成分(C))である。
表3に記載の化合物D1~化合物D3を用意した。化合物D1~化合物D3は、いずれもアルカリ成分(成分D)である。
上記各成分を水に溶解し、さらに全量が100質量%となるように水を添加して、水系の、回路基板用樹脂膜の剥離剤1~剥離剤14および回路基板用樹脂膜の剥離剤21~剥離剤28を調製した。
剥離剤1~剥離剤14および剥離剤21~剥離剤28のpHメーター(「LAQUA F-72」:株式会社堀場製作所製)を用いて測定した。なお、測定温度は25℃とし、25℃の恒温槽中にて各剥離剤を攪拌しながら測定した。
上記用意した剥離剤1~剥離剤14および剥離剤21~剥離剤28を、以下の基準で評価した。
2-1-1.回路基板用樹脂膜の形成
集積回路用樹脂膜として、感光性PCB回路用フィルム(Guang Zhou TiYaLin Electronic Technology Co.,Ltd.製)を使用した。上記フィルムは、ネガ型ドライフィルムレジストである。
上記ネガ型ドライフィルムレジストを塗工した回路基板を50mLスクリュー管内にて約50gの上記調製した剥離剤のいずれかに全浸漬し、500rpmにて攪拌しながら、樹脂膜が完全に除去されたことが目視で確認されるまでの時間を計測した。また、数個の剥離後の試験片を剥離剤から任意に取り出し、上記試験片の四辺長を計測し、これらの平均値を算出した。剥離試験時の液温は、50℃となるよう調整して試験を実施した。この一連の剥離工程を3回繰り返し実施した。
◎:剥離時間は90秒以内だった
○:剥離時間は90秒を超え、120秒以内だった
×:剥離工程は120秒を超えていた
◎:剥離片の平均四辺長は2mm以下だった
○:剥離片の平均四辺長は2mmを超え、5mm以下だった
×:剥離片の平均四辺長は5mmを超えていた
全量が100質量%となるように水を添加する前の上記剥離剤を、100mlスクリュー管にそれぞれ10gずつ量りとった。その後、蓋をして10秒間激しく上下に振とうした後に静置した。静置して30秒後の液面からの泡高さを測定した。
◎:泡高さは5mm以下だった
○:泡高さは5mmより高く10mm以下だった
×:泡高さは10mmより高かった
上記剥離剤を100mlスクリュー管にそれぞれ50mlずつ投入して、-10℃および25℃の恒温槽にそれぞれ1週間静置した。静置後の剥離剤の外観を確認した。
○:どちらの温度においても、静置後の剥離剤は均一かつ透明であった
×:少なくとも一方の温度において、静置後の剥離剤が白濁していた
Claims (4)
- 式(1)で示される化合物(成分(A))、および
炭素数が1以上6以下であり、かつ分子量が30以上120以下である脂肪族アルコール(成分(B))、を含有する回路基板用樹脂膜の剥離剤であって、
前記剥離剤のpHは、13.0以上14.0未満であり、
前記剥離剤の全質量に対する、前記成分(A)の含有量が0.1質量%以上5質量%以下であり、前記成分(B)の含有量が5質量%以上40質量%以下である、回路基板用樹脂膜の剥離剤。
R1-O-(A1O)a-H ・・・式(1)
(式(1)中、R1は炭素数が6以上10以下である分岐アルキル基を、A1Oは炭素数が2以上3以下であるオキシアルキレン基を示し、前記オキシアルキレン基の平均付加モル数であるaは2以上15以下の数である。) - 防錆剤(成分(C))をさらに含有し、前記剥離剤の全質量に対する、前記成分(C)の含有量が0.5質量%以上2質量%以下である、請求項1に記載の回路基板用樹脂膜の剥離剤。
- 少なくとも一方の面に樹脂膜が形成された回路基板を用意する工程と、
請求項1~3のいずれか1項に記載の剥離剤を、前記樹脂膜に接触させる工程と、
を有する、回路基板の製造方法。
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| US18/572,311 US20240294846A1 (en) | 2021-06-24 | 2022-06-10 | Release agent for circuit board resin film and production method for circuit board |
| KR1020237044431A KR20240024847A (ko) | 2021-06-24 | 2022-06-10 | 회로 기판용 수지막의 박리제 및 회로 기판의 제조 방법 |
| JP2023529841A JPWO2022270333A1 (ja) | 2021-06-24 | 2022-06-10 | |
| CN202280036287.6A CN117355798A (zh) | 2021-06-24 | 2022-06-10 | 电路基板用树脂膜的剥离剂和电路基板的制造方法 |
| EP22828250.5A EP4316678A4 (en) | 2021-06-24 | 2022-06-10 | RELEASE AGENT FOR PRINTED CIRCUIT BOARD RESIN FILM AND PRODUCTION METHOD FOR PRINTED CIRCUIT BOARD |
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| WO2018020837A1 (ja) * | 2016-07-28 | 2018-02-01 | 野村マイクロ・サイエンス株式会社 | レジスト剥離液組成物 |
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| JP2019105670A (ja) | 2017-12-08 | 2019-06-27 | 花王株式会社 | 樹脂マスク剥離用洗浄剤組成物 |
| JP2019117331A (ja) | 2017-12-27 | 2019-07-18 | 花王株式会社 | 樹脂マスク剥離用洗浄剤組成物 |
| JP2021104677A (ja) | 2015-03-25 | 2021-07-26 | ストラタシス リミテッド | 導電性インクのインサイチュ焼結のための方法及びシステム |
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| US6274296B1 (en) * | 2000-06-08 | 2001-08-14 | Shipley Company, L.L.C. | Stripper pretreatment |
| JP4741315B2 (ja) * | 2005-08-11 | 2011-08-03 | ローム・アンド・ハース・エレクトロニック・マテリアルズ,エル.エル.シー. | ポリマー除去組成物 |
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| JP2008058624A (ja) | 2006-08-31 | 2008-03-13 | Tokyo Ohka Kogyo Co Ltd | フォトレジスト用剥離液およびこれを用いた基板の処理方法 |
| JP2021104677A (ja) | 2015-03-25 | 2021-07-26 | ストラタシス リミテッド | 導電性インクのインサイチュ焼結のための方法及びシステム |
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| WO2018047631A1 (ja) * | 2016-09-09 | 2018-03-15 | 花王株式会社 | 樹脂マスク剥離用洗浄剤組成物 |
| JP2018087958A (ja) * | 2016-11-22 | 2018-06-07 | ナガセケムテックス株式会社 | レジスト剥離液及びレジストの剥離方法 |
| JP2019105670A (ja) | 2017-12-08 | 2019-06-27 | 花王株式会社 | 樹脂マスク剥離用洗浄剤組成物 |
| JP2019117331A (ja) | 2017-12-27 | 2019-07-18 | 花王株式会社 | 樹脂マスク剥離用洗浄剤組成物 |
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| US20240294846A1 (en) | 2024-09-05 |
| EP4316678A1 (en) | 2024-02-07 |
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| CN117355798A (zh) | 2024-01-05 |
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