WO2017038718A1 - 含フッ素重合体、その製造方法、および含フッ素重合体の硬化物 - Google Patents
含フッ素重合体、その製造方法、および含フッ素重合体の硬化物 Download PDFInfo
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- WO2017038718A1 WO2017038718A1 PCT/JP2016/075078 JP2016075078W WO2017038718A1 WO 2017038718 A1 WO2017038718 A1 WO 2017038718A1 JP 2016075078 W JP2016075078 W JP 2016075078W WO 2017038718 A1 WO2017038718 A1 WO 2017038718A1
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- Prior art keywords
- fluoropolymer
- unit
- fluorine
- group
- carbon atoms
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- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- GBXQPDCOMJJCMJ-UHFFFAOYSA-M trimethyl-[6-(trimethylazaniumyl)hexyl]azanium;bromide Chemical compound [Br-].C[N+](C)(C)CCCCCC[N+](C)(C)C GBXQPDCOMJJCMJ-UHFFFAOYSA-M 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08F216/00—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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/12—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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
- C08F216/14—Monomers containing only one unsaturated aliphatic radical
- C08F216/1458—Monomers containing nitrogen
-
- 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
- C08F14/00—Homopolymers and 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 a halogen
- C08F14/18—Monomers containing fluorine
-
- 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
- C08F16/00—Homopolymers and 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F16/12—Homopolymers and 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
- C08F16/14—Monomers containing only one unsaturated aliphatic radical
- C08F16/28—Monomers containing nitrogen
-
- 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
- C08F214/00—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 a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/182—Monomers containing fluorine not covered by the groups C08F214/20 - C08F214/28
-
- 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
- C08F214/00—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 a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/28—Hexyfluoropropene
- C08F214/285—Hexyfluoropropene with non-fluorinated comonomers
- C08F214/287—Hexyfluoropropene with non-fluorinated comonomers with non-fluorinated vinyl ethers
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- 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
- C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
- C08F2800/10—Copolymer characterised by the proportions of the comonomers expressed as molar percentages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of 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 a halogen; Derivatives of such polymers
- C08J2327/22—Characterised by the use of 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 a halogen; Derivatives of such polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/10—Homopolymers or copolymers of unsaturated ethers
Definitions
- the present invention relates to a fluoropolymer, a production method thereof, and a cured product of the fluoropolymer.
- white LEDs Light Emitting Diodes, light-emitting diodes
- the white LED is adjusted to a neutral white color or a light bulb color by combining a blue LED element, a yellow phosphor, and a red phosphor as necessary.
- the light emitting element is sealed with a translucent resin such as a silicone resin.
- a curable fluoropolymer having a carboxylic acid alkyl ester group, for example, a COOCH 3 group is cured by irradiation with active energy rays to generate HF.
- a cured product having a small amount and excellent stability has been proposed (Patent Document 1).
- the fluorine-containing polymer described in Patent Document 1 has insufficient hydrogen bondability of the carboxylic acid alkyl ester group in the fluorine-containing polymer, so that it can be dissolved in alcohol such as methanol. Insufficient sex.
- An object of the present invention is to provide a fluorine-containing polymer that is excellent in solubility in alcohol and can be cured.
- the present invention provides a fluorinated polymer having the following constitutions [1] to [10], a method for producing the same, a method for producing a cured product of the fluorinated polymer, and a light emitting device.
- X 1 and X 2 are each independently a hydrogen atom or a fluorine atom
- Q 1 is a single bond or an etheric oxygen atom
- R f1 is a fluoroalkylene group or a fluoroalkylene group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms
- Z 1 is NR 1 NR 2 H, NR 3 OR 4 or OR 5
- R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom or an alkyl group
- R 5 is an alkyl group.
- At least part of the unit represented by the formula (1) is — [CF 2 —CF (O (CF 2 ) 3 CONHNH 2 )] — or — [CF 2 —CF (O (CF 2 ) 3 CONHOH)] —.
- X 3 and X 4 are each independently a hydrogen atom, a fluorine atom or a chlorine atom
- Y 1 is a hydrogen atom, a fluorine atom or a chlorine atom
- Y 2 represents a hydrogen atom, a fluoroalkyl group, a fluoroalkyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms, a fluoroalkoxy group, or a carbon number having an etheric oxygen atom between carbon-carbon atoms.
- a method for producing a cured product of a fluoropolymer wherein the fluoropolymer of any one of [1] to [7] is subjected to at least one of heating and active energy ray irradiation.
- a light emitting device comprising: a light emitting element; and a cured product of the fluoropolymer of any one of [1] to [7].
- Translucent sealing means sealing having both a function of transmitting light and a sealing function.
- the “unit” in the polymer means a portion derived from the monomer formed by polymerization of the monomer.
- Fluoroethylene means a compound in which 0 to 3 fluorine atoms of tetrafluoroethylene (CF 2 ⁇ CF 2 ) are substituted with a hydrogen atom or a halogen atom other than fluorine (eg, chlorine, bromine, iodine). To do.
- a group having a carbon atom chain such as an alkyl group, a fluoroalkyl group, a fluoroalkylene group, a fluoroalkoxy group, or a fluoroalkenyl group may be linear or branched.
- “Fluoroalkyl group” refers to a group in which one or more hydrogen atoms of an alkyl group are substituted with fluorine atoms.
- the ratio of fluorine atoms in the fluoroalkyl group was expressed by (number of fluorine atoms in the fluoroalkyl group) / (number of hydrogen atoms in the alkyl group having the same number of carbon atoms corresponding to the fluoroalkyl group) ⁇ 100 (%). In some cases, 50% or more is preferable, and 100%, that is, a perfluoroalkyl group is particularly preferable. The same applies to a fluoroalkylene group, a fluoroalkoxy group, and a fluoroalkenyl group, and a perfluoroalkylene group, a perfluoroalkoxy group, and a perfluoroalkenyl group are preferable. “Curing” means curing by crosslinking unless otherwise specified.
- the fluoropolymer of the present invention includes a unit represented by the following formula (1) (hereinafter also referred to as “unit (1)”), and at least a part of the unit (1) is such that Z 1 is NR 1. NR 2 H or NR 3 OR 4 .
- X 1 and X 2 are each independently a hydrogen atom or a fluorine atom, Q 1 is a single bond or an etheric oxygen atom, R f1 is a fluoroalkylene group or a fluoroalkylene group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms; Z 1 is NR 1 NR 2 H, NR 3 OR 4 or OR 5 ; R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom or an alkyl group; R 5 is an alkyl group.
- the fluoropolymer of the present invention since at least a part of the unit (1) is such that Z 1 is NR 1 NR 2 H or NR 3 OR 4 , the fluoropolymer is a perfluoropolymer, or fluorine Even a fluorine-containing polymer having a high atomic content can be dissolved in alcohol.
- the alcohol examples include methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, tert-butanol, methoxyethanol, methoxypropanol, and the like, with methanol and ethanol being preferred.
- the fluorine-containing polymer is preferably dissolved at 2% by mass or more, more preferably at least 3% by mass with respect to the total of alcohol (preferably methanol) and the fluorine-containing polymer at room temperature (25 ° C.). Preferably, 4% by mass or more is more preferable, and 5% by mass or more is particularly preferable. In addition, as long as it has the property to melt
- Q 1 is preferably an etheric oxygen atom.
- R f1 is a fluoroalkylene group
- the carbon number is preferably 1 to 6, and more preferably 1 to 4.
- the fluoroalkylene group is preferably a perfluoroalkylene group from the viewpoint of excellent thermal stability. That is, R f1 is preferably a perfluoroalkylene group having 1 to 6 carbon atoms, and particularly preferably a perfluoroalkylene group having 1 to 4 carbon atoms.
- R f1 is a fluoroalkylene group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms
- the number of carbon atoms is preferably 2 to 10, and more preferably 2 to 6.
- the fluoroalkylene group is preferably a perfluoroalkylene group from the viewpoint of excellent thermal stability. That is, R f1 is preferably a C 2-10 perfluoroalkylene group having an etheric oxygen atom between carbon-carbon atoms, and a C 2-6 perfluoroalkyl group having an etheric oxygen atom between carbon-carbon atoms.
- An alkylene group is particularly preferred.
- R 1 , R 2 , R 3 and R 4 are each preferably a hydrogen atom or an alkyl group having 1 to 6 carbon atoms from the viewpoint of high hydrogen bondability and excellent solubility of the fluoropolymer in alcohol.
- an alkyl group having 1 or 2 carbon atoms is more preferable, and a hydrogen atom is particularly preferable.
- the unit (1) include the following units. — [CF 2 —CF (O (CF 2 ) 2 CONHNH 2 )] — — [CF 2 —CF (O (CF 2 ) 2 CON (CH 3 ) NHCH 3 )] — — [CF 2 —CF (O (CF 2 ) 2 CONHOH)] — — [CF 2 —CF (O (CF 2 ) 2 CONHOCH 3 )] — — [CF 2 —CF (O (CF 2 ) 3 CONHNH 2 )] — — [CF 2 —CF (O (CF 2 ) 3 CON (CH 3 ) NHCH 3 )] — — [CF 2 —CF (O (CF 2 ) 3 CONHOH)] — — [CF 2 —CF (O (CF 2 ) 3 CONHOCH 3 )] — — [CF 2 —CF (O (CF 2 ) 3 CONHOCH 3 )] — — [CF 2 —CF (O (CF 2
- the fluoropolymer may contain the unit (1) alone or in a combination of two or more units (1).
- the fluorine-containing polymer is preferably a polymer containing units in which Z 1 is NR 1 NR 2 H.
- Z 1 is NR 1 NR 2 H is a unit and Z 1 is or polymer comprising a unit which is OR 5, or Z 1 is NR 3 Polymers containing units that are OR 4 are preferred.
- fluorine-containing polymer is a polymer containing a unit units and Z 1 units and Z 1 Z 1 is NR 1 NR 2 H is a NR 3 OR 4 is OR 5
- the polymer may include a unit in which Z 1 is NR 3 OR 4 and a unit in which Z 1 is NR 3 OR 4 .
- the unit (1) in which Z 1 is OR 5 can be formed by polymerizing a compound represented by the following formula (11) as a monomer. Further, the unit (1) in which Z 1 is NR 1 NR 2 H and NR 3 OR 4 can be formed by a method for producing a fluoropolymer described later.
- CX 1 X 2 CF-Q 1 -R f1 -COOR 5 (11) (In formula (11), X 1 , X 2 , Q 1 , R f1 and OR 5 are as defined in formula (1), and the examples and preferred ranges are also the same.)
- the fluoropolymer of the present invention further includes a unit derived from fluoroethylene (hereinafter also referred to as “unit (2)”), a unit represented by the formula (3) described below (hereinafter referred to as “unit (3)”). And other units (hereinafter also referred to as “unit (4)”).
- unit (2) a unit derived from fluoroethylene
- unit (3) a unit represented by the formula (3) described below
- unit (4) other units
- Unit (2) ⁇ Unit derived from fluoroethylene (unit (2))> Specific examples of the unit (2) include tetrafluoroethylene (CF 2 ⁇ CF 2 ) (TFE), trifluoroethylene (CF 2 ⁇ CHF) (TrFE), chlorotrifluoroethylene (CFCl ⁇ CF 2 ), vinylidene fluoride. And a unit derived from dodo (CF 2 ⁇ CH 2 ). From the viewpoint of excellent light resistance, units derived from TFE, TrFE and chlorotrifluoroethylene are preferred. A unit derived from TFE is particularly preferred from the viewpoint of excellent adhesion to the substrate due to the presence of one highly polar —COZ group at the interface.
- Units derived from TrFE and chlorotrifluoroethylene are particularly preferred from the standpoint that the units derived from TFE have less crystallinity of the fluoropolymer, are less likely to cause light scattering, and have high transparency. From the viewpoint of excellent solubility in alcohol, a unit derived from TrFE is particularly preferable.
- the fluoropolymer may contain the unit (2) alone or in a combination of two or more units (2).
- the unit (3) is a unit represented by the following formula (3) (however, a unit derived from fluoroethylene is excluded). -[CX 3 X 4 -CY 1 Y 2 ] -...
- X 3 and X 4 are each independently a hydrogen atom, a fluorine atom or a chlorine atom
- Y 1 is a hydrogen atom, a fluorine atom or a chlorine atom
- Y 2 represents a hydrogen atom, a fluoroalkyl group, a fluoroalkyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms, a fluoroalkoxy group, or a carbon number having an etheric oxygen atom between carbon-carbon atoms.
- the fluoroalkyl group for Y 2 preferably has 1 to 15 carbon atoms, and particularly preferably 1 to 6 carbon atoms. From the viewpoint of excellent thermal stability, a perfluoroalkylene group is preferred, a C 1-6 perfluoroalkyl group is more preferred, and —CF 3 is particularly preferred.
- the fluoroalkyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon and carbon atoms in Y 2 has preferably 2 to 15 carbon atoms, and particularly preferably 2 to 6 carbon atoms.
- a fluoroalkyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms is a perfluoroalkyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms.
- a C 2-6 perfluoroalkyl group having an etheric oxygen atom between carbon-carbon atoms is particularly preferred.
- the fluoroalkoxy group for Y 2 preferably has 1 to 15 carbon atoms, and particularly preferably 1 to 6 carbon atoms. From the viewpoint of excellent thermal stability, the fluoroalkoxy group is preferably a perfluoroalkoxy group having 1 to 6 carbon atoms, and —OCF 3 , —OCF 2 CF 3 , —O (CF 2 ) 2 CF 3 , —O (CF 2 ) 3 CF 3 is particularly preferred.
- the fluoroalkoxy group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms in Y 2 has preferably 2 to 15 carbon atoms, and particularly preferably 2 to 6 carbon atoms.
- a fluoroalkoxy group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms is a perfluoroalkoxy group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms.
- a C 2-6 perfluoroalkoxy group having an etheric oxygen atom between carbon-carbon atoms is particularly preferred.
- the fluoroalkenyl group in Y 2 preferably has 5 to 15 carbon atoms from the viewpoint that the cyclization reaction does not proceed in the molecule and the synthesis is easy. From the viewpoint of excellent thermal stability, the fluoroalkenyl group is preferably a perfluoroalkenyl group, and — (CF 2 ) 4 CF ⁇ CF 2 , — (CF 2 ) 5 CF ⁇ CF 2 and — (CF 2 ) 6 CF ⁇ CF 2 is particularly preferred.
- the fluoroalkenyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms in Y 2 has preferably 2 to 15 carbon atoms, and particularly preferably 2 to 6 carbon atoms.
- a fluoroalkenyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms is a perfluoroalkenyl group having 2 or more carbon atoms having an etheric oxygen atom between carbon-carbon atoms.
- a C2-C6 perfluoroalkenyl group having an etheric oxygen atom between carbon-carbon atoms is particularly preferable.
- the glass transition temperature of the fluorinated polymer is lowered, the fluidity is excellent, and the moldability is excellent, and when the fluorinated polymer is cured by at least one of heating and active energy ray irradiation, the molecule has high mobility.
- the unit (3) has — [CH 2 —CH 2 ] —, — [CF 2 —CF (CF 3 )] —, — [CF 2 —CF (OCF 3 ) ]-,-[CF 2 -CF (O (CF 2 ) 2 CF 3 )]-or-[CF 2 -CF (OCF 2 CF (CF 3 ) O (CF 2 ) 2 CF 3 )]- Is preferred.
- the fluoropolymer may contain the unit (3) alone or in a combination of two or more units (3).
- Unit (3) can be formed by polymerizing compound (31) as a monomer.
- CX 3 X 4 CY 1 Y 2 (31) (In formula (31), X 3 , X 4 , Y 1 and Y 2 are as defined in formula (3), and the examples and preferred ranges are also the same.)
- the ratio of the group represented by —COZ 1 in the fluoropolymer of the present invention is preferably 0.022 to 7.1 mmol / g, and preferably 0.1 to 4 mmol / g with respect to the mass of the fluoropolymer. Is more preferable, 0.1 to 3 mmol / g is more preferable, and 0.2 to 1 mmol / g is particularly preferable.
- the ratio of the group represented by —COZ 1 is the total ratio of —CONR 1 NR 2 H, —CONR 3 OR 4 and —COOR 5 . If it is more than the lower limit of the said range, the solubility with respect to alcohol will improve more.
- the proportion of units in which Z 1 is NR 1 NR 2 H in the fluoropolymer of the present invention is preferably 0.02 to 2 mmol / g, preferably 0.02 to 1 mmol, relative to the mass of the fluoropolymer. / G is more preferable, and 0.2 to 0.5 mmol / g is particularly preferable. If it is more than the lower limit of the said range, the solubility with respect to alcohol will be more excellent. If it is below the upper limit of the said range, when hardening a fluoropolymer by active energy ray irradiation, only the surface will not harden
- the ratio of the unit in which Z 1 is NR 3 OR 4 in the fluoropolymer of the present invention is preferably 0.1 to 4 mmol / g, preferably 0.2 to 3 mmol / g, based on the mass of the fluoropolymer. g is more preferable, and 0.3 to 1 mmol / g is particularly preferable. If it is more than the lower limit of the said range, the solubility with respect to alcohol will be more excellent. If it is below the upper limit of the said range, when hardening a fluoropolymer by active energy ray irradiation, only the surface will not harden
- the fluoropolymer includes a unit in which Z 1 is NR 1 NR 2 H and a unit in which Z 1 is OR 5 , a unit in which Z 1 is NR 1 NR 2 H and Z
- the unit in which Z 1 is NR 1 NR 2 H with respect to 100 mol% in total with the unit in which 1 is OR 5 is not particularly limited as long as the ratio of the group represented by —COZ 1 is satisfied, It is preferably 1 to 90 mol%, more preferably 5 to 70 mol%, particularly preferably 10 to 60 mol%.
- the fluoropolymer can be cured by heating or irradiation with active energy rays while maintaining solubility in alcohol. it can. If it is below the upper limit of the said range, when hardening a fluoropolymer by active energy ray irradiation, only the surface will not harden
- the proportion of the group represented by —COZ 1 in the unit (1) in the fluoropolymer can be calculated by 19 F-NMR measurement.
- the ratio of the unit (1) in all units of the fluoropolymer is preferably 1 to 100 mol%, more preferably 3 to 98 mol%, further preferably 3 to 50 mol%, and particularly preferably 5 to 15 mol%.
- the proportion of the unit (1) is not less than the lower limit of the above range, the solubility in alcohol is more excellent.
- the proportion of the unit (1) is not more than the upper limit of the above range, when the fluoropolymer is cured by irradiation with active energy rays, only the surface is not cured and the generation of bubbles in the cured product is small. .
- the fluoropolymer is cured by heating, the generation of bubbles in the cured product is small.
- a preferred embodiment of the fluoropolymer is a fluoropolymer containing the unit (1), the unit (2) and the unit (3), wherein the ratio of the unit (1) is 1 in all units of the fluoropolymer. Is 98 mol%, the proportion of unit (2) is 1 to 95 mol%, and the proportion of unit (3) is 1 to 95 mol%.
- the content of units (1) to (4) in the fluoropolymer can be calculated by 19 F-NMR and 1 H-NMR measurements.
- the mass average molecular weight of the fluoropolymer of the present invention is preferably 3,000 to 200,000.
- the mass average molecular weight of the fluorine-containing polymer is 10,000 or less
- the viscosity is 1 to 10,000 Pa ⁇ s, and it becomes 10 Pa ⁇ s or less when heated at 25 to 100 ° C. and flows under its own weight.
- the mass average molecular weight exceeds 10,000, the viscosity becomes 10,000 Pa ⁇ s or higher at 25 ° C., and heating at 100 to 150 ° C. is required for fluidization.
- it exceeds 20,000 it is necessary to make it flow by pressurization of 0.1 to 10 MPa.
- the mass average molecular weight of the fluoropolymer is preferably from 3,000 to 20,000, particularly preferably from 5,000 to 15,000. If the weight average molecular weight of the fluoropolymer is at least the lower limit of this range, the cured cured product tends to be excellent in mechanical strength and heat resistance, and if it is below the upper limit of this range, fluidity is ensured during molding. There is a tendency to. In particular, when the SMD type (LED module with a cup-shaped reflector) is sealed, a fluoropolymer having a mass average molecular weight in this range is preferred because fluidity is important.
- the mass average molecular weight of the fluoropolymer is preferably 20,000 to 200,000, particularly preferably 30,000 to 100,000.
- heat sealing may be performed using a sheet-shaped sealing resin.
- the sheet-like fluoropolymer can be superposed on the substrate on which the LED element is mounted, and the element can be sealed by heating and flowing at 100 to 150 ° C., covering the element with the fluoropolymer, and crosslinking.
- the sheet in order to seal without leaving any gaps or bubbles, it is preferable to cover the sheet while applying pressure.
- the mass average molecular weight is 20,000 or more, it does not flow at room temperature and maintains its shape and is not sticky, so that it is easy to handle and can be flowed by pressure heating to seal the LED element.
- the mass average molecular weight is 200,000 or less, the temperature required for fluidization does not become too high, and an undesirable influence on the device or the like can be avoided.
- the mass average molecular weight can be determined as a PMMA (polymethyl methacrylate) equivalent molecular weight by gel permeation chromatography (GPC).
- PMMA polymethyl methacrylate
- the fluoropolymer includes a fluoropolymer containing a unit represented by the following formula (1a) (hereinafter also referred to as “unit (1a)”), and a hydrazine compound represented by the following formula (5). And a “hydrazine compound”) and a hydroxylamine compound represented by the following formula (6) (hereinafter, also referred to as “hydroxylamine compound”). can get.
- HR 1 N—NR 2 H (5) NHR 3 OR 4 (6) In the formula (1a), X 1 , X 2 , Q 1 , R f1 and R 5 are as defined in the formula (1), and the examples and preferred ranges are the same.
- R 1 and R 2 are as defined in formula (1), and the examples and preferred ranges are the same,
- R 3 and R 4 are as defined in formula (1), and examples and preferred ranges are the same. )
- the fluorine-containing polymer contains a unit in which Z 1 is NR 1 NR 2 H
- the fluorine-containing polymer is obtained by a method of reacting a fluorine-containing polymer containing the unit (1a) with a hydrazine compound.
- the fluorine-containing polymer contains a unit in which Z 1 is NR 3 OR 4
- the fluorine-containing polymer is obtained by a method of reacting the fluorine-containing polymer containing the unit (1a) with a hydroxylamine compound.
- IR infrared spectroscopy
- the fluoropolymer contains a unit in which Z 1 is NR 1 NR 2 H, a unit in which Z 1 is NR 3 OR 4 , and a unit in which Z 1 is OR 5
- production of the fluoropolymer include the following.
- a fluorine-containing polymer containing the unit (1a) is reacted with a hydrazine compound, and then a hydroxylamine compound is reacted.
- B A fluorine-containing polymer containing the unit (1a) is reacted with a hydroxylamine compound. And then reacting the hydrazine compound
- the unit (1a) corresponds to a unit (1) in which Z 1 is other than NR 1 NR 2 H and NR 3 OR 4 .
- the fluorine-containing polymer containing the unit (1a) may further have the above-described unit (2), unit (3) and unit (4).
- the ratio of the unit (1a), the unit (2), the unit (3) and the unit (4), including the preferred ones is the unit (1), the unit (2),
- the ratio of the unit (3) and the unit (4) is as described above.
- the proportion of —COOR 5 in the fluorine-containing polymer containing the unit (1a) is as described above for the proportion of —COZ 1 including preferable ones.
- the fluorine-containing polymer containing the unit (1a) can be obtained by polymerizing the monomer forming the above unit by a known method (for example, the method described in International Publication No. 2015/0987773).
- hydrazine compound examples include hydrazine, hydrazine monohydrate, methyl hydrazine, and 1,2-dimethylhydrazine. From the viewpoint that the safety and solubility of the resulting fluoropolymer in alcohol are more excellent, hydrazine.1 Hydrates are preferred.
- the hydrazine compound may be subjected to a reaction with the fluoropolymer containing the unit (1a) in the form of an aqueous solution or salt. A commercial item can be used for the hydrazine compound.
- hydroxylamine compound represented by formula (6) examples include hydroxylamine, N-methylhydroxylamine, N, O-dimethylhydroxylamine, and isopropylhydroxylamine. From the viewpoint of better solubility of the resulting fluoropolymer in alcohol, preferable.
- the hydroxylamine compound may be subjected to the reaction with the fluoropolymer containing the unit (1a) in the form of an aqueous solution or in the form of a salt, but an aqueous solution is preferred from the viewpoint of safety.
- a commercial item can be used for a hydroxylamine compound.
- One or more compounds selected from the group consisting of a hydrazine compound and a hydroxylamine compound are a compound of the desired —COZ 1 per 1 mol of the group represented by —COOR 5 of the fluoropolymer containing the unit (1a).
- the amount of the fluoropolymer is not particularly limited as long as it is obtained, but is preferably 0.1 to 20 mol, more preferably 0.3 to 15 mol, and particularly preferably 0.5 to 10 mol.
- the reaction can be performed in the presence of a solvent.
- the solvent is preferably capable of dissolving the raw material components (fluorinated polymer containing unit (1a), hydroxylamine compound, hydrazine compound), but it is preferable to use a solvent in which the fluorinated polymer containing at least unit (1a) is dissolved.
- the solvent include a fluorine-containing solvent, an ether solvent, and an ester solvent, and can be appropriately selected according to the polarity of the raw material components.
- alcohol is as having mentioned above in the fluoropolymer.
- the fluorine-containing solvent contains fluorine and carbon, and optionally contains chlorine, oxygen, and hydrogen, and examples thereof include fluorinated alkanes, fluorinated aromatic compounds, fluoroalkyl ethers, fluorinated alkylamines, and fluoroalcohols.
- fluorinated alkane a compound having 4 to 8 carbon atoms is preferable.
- Examples of commercially available products include CF 3 CH 2 CF 2 H (HFC-245fa), CF 3 CH 2 CF 2 CH 3 (HFC-365mfc), perfluorohexane, 1H-perfluorohexane, perfluorooctane, C 6 F 13 H ( Asahi Glass Co., Ltd., Asahi Clin (registered trademark) AC-2000), C 6 F 13 C 2 H 5 (Asahi Glass Co., Ltd., Asahi Clin (registered trademark) AC-6000), C 2 F 5 CHFCHFCF 3 (manufactured by Chemers Corporation, Vertrel (registered trademark) XF) and the like.
- fluorinated aromatic compound examples include hexafluorobenzene, trifluoromethylbenzene, perfluorotoluene, and bis (trifluoromethyl) benzene.
- fluoroalkyl ether a compound having 4 to 12 carbon atoms is preferable.
- Examples of commercially available products include CF 3 CH 2 OCF 2 CF 2 H (Asahi Glass Co., Ltd., Asahi Clin (registered trademark) AE-3000), C 4 F 9 OCH 3 (manufactured by 3M, Novec (registered trademark) 7100), C 4 F 9 OC 2 H 5 (manufactured by 3M, Novec (registered trademark) 7200), C 2 F 5 CF (OCH 3 ) C 3 F 7 (manufactured by 3M, Novec (registered trademark) 7300), etc. .
- Examples of the fluorinated alkylamine include perfluorotripropylamine and perfluorotributylamine.
- fluoroalcohol examples include 2,2,3,3-tetrafluoropropanol, 2,2,2-trifluoroethanol, hexafluoroisopropanol and the like.
- Other examples include dichloropentafluoropropane (HCFC-225) and perfluoro (2-butyltetrahydrofuran).
- dichloropentafluoropropane examples include AK-225 (manufactured by Asahi Glass Co., Ltd.) as a commercial product.
- ether solvents include ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diisopropyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, and propylene glycol dimethyl ether.
- ester solvent examples include methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, and isobutyl acetate.
- the reaction is performed, for example, by dissolving the fluoropolymer containing the unit (1a) in the solvent and adding one or more compounds selected from the group consisting of hydrazine compounds and hydroxylamine compounds at 0 to 30 ° C. Do. After the addition, the desired fluoropolymer can be obtained by heating to 30 to 100 ° C. and reacting for 1 minute to 10 hours.
- the cured product formed from the fluoropolymer of the present invention can be produced using only the fluoropolymer. Moreover, it can also manufacture from the curable composition containing the said fluoropolymer (however, a solvent is not included) and the coating composition containing the said curable composition and a solvent.
- components other than the fluoropolymer in the curable composition include inorganic particles, silane coupling agents, fluoropolyether compounds, and the like.
- examples of the silane coupling agent and the fluoropolyether compound include those described in International Publication No. 2015/0987773.
- the inorganic particles metal oxides such as silica, titania, zirconia, and alumina, and various phosphor particles are preferable.
- the diameter of the inorganic particles is not particularly limited, but is preferably 1 to 100 nm, and particularly preferably 1 to 20 nm from the viewpoint of suppressing light scattering and ensuring the transparency of the composition.
- the content of the inorganic particles is preferably 20 to 200 parts by mass, preferably 50 to 100 parts by mass with respect to 100 parts by mass of the fluoropolymer, from the viewpoint of increasing the refractive index of the cured product formed from the obtained fluoropolymer. Part is particularly preferred. If content of an inorganic particle is more than the lower limit of the said range, a refractive index will be raised more. If it is below the upper limit of the said range, it is excellent in a moldability.
- the solvent in the coating composition includes alcohol and may further contain a solvent other than alcohol.
- a solvent other than alcohol those exemplified as the solvent for producing the fluoropolymer (however, excluding alcohol) are preferable.
- the solid content in the coating composition is preferably 1 to 99% by mass.
- the fluorine-containing polymer in the coating composition is preferably 1 to 99% by mass.
- the amount of solvent in the coating composition is preferably 99 to 1% by mass.
- the content of alcohol in the solvent is preferably 50 to 99% by mass.
- the cured product formed from the fluoropolymer in the present invention is produced by a method including at least one of heating and active energy ray irradiation of the fluoropolymer.
- the cured product formed from the fluorinated polymer is a molded product made of a fluorinated polymer or a molded product made of a curable composition containing the fluorinated polymer, and then the molded product is heated and subjected to active energy rays. It is preferably produced by a method comprising at least one of the irradiations.
- the cured product can be obtained at a lower temperature than when the cured product is produced by heating the molded body.
- heating can be performed before, simultaneously with, and / or after irradiation with active energy rays.
- the unit (1) when the unit (1) includes a unit in which Z 1 is NR 1 NR 2 H and a unit in which Z 1 is OR 5 , at least one of heating and active energy ray irradiation Can be cured.
- the unit (1) when the unit (1) contains a unit in which Z 1 is NR 3 OR 4 , it can be cured by irradiation with active energy rays.
- the shaped body can be produced using a curable composition or a coating composition.
- a coating composition When producing a thin film-shaped molded body or a thin film-shaped molded body integrated with a substrate, it is preferable to use a coating composition.
- a method of using the curable composition it is made to flow by heating and poured into a mold to have a predetermined shape, a method of casting on the surface of the mold to form a sheet-like or film-like molded body, extrusion molding, Examples thereof include a method of forming into a predetermined shape by transfer molding or the like, and a method of secondary processing such as cutting or bending the formed sheet or film into a predetermined shape.
- a cured product formed from a fluoropolymer integrated with a base material molding is performed using the base material as the mold, and the molded body is crosslinked without separating the molded body from the base material.
- the cured product formed from the fluoropolymer integrated with the base material can be produced by the method. It is also possible to produce a cured product formed from a fluoropolymer integrated with a base material by secondary processing such as a method of laminating a formed sheet or film on the base material and pressing it. it can. This is a method suitable for producing a thin film-shaped molded body or a thin-film molded body integrated with a base material, for example, a light-transmitted LED.
- the coating composition can be applied by spin coating, wipe coating, spray coating, squeegee coating, dip coating, die coating, ink jet, flow coating, roll coating, casting, Langmuir / Blodget Method, gravure coating method and the like.
- the heating temperature is not particularly limited, but is preferably 100 to 200 ° C, and particularly preferably 120 to 180 ° C.
- the heating time is not particularly limited, but is preferably 10 minutes to 10 hours, particularly preferably 30 minutes to 4 hours. A method of gradually raising the temperature is also effective.
- the unit (1) when the unit (1) includes a unit in which Z 1 has NR 1 NR 2 H and a unit in which Z 1 has OR 5 , the following reaction formula [I It is considered that a cross-linked structure (—Q 1 —R f1 —CONR 1 NR 2 CO—R f1 —Q 1 —) is formed. Thereby, it is considered that the fluoropolymer is crosslinked and cured. In the fluoropolymer of the present invention, it is considered that the cross-linking reaction by heating does not proceed between units in which Z 1 is OR 5 or units in which Z 1 has NR 1 NR 2 H.
- the wavelength of the active energy ray is preferably 150 to 300 nm, particularly preferably 200 to 260 nm.
- Sources of active energy rays are metal halide lamps at 250 to 300 nm, low pressure mercury lamps at 185 and 254 nm, excimer lamps at 172 and 222 nm, KrF excimer laser at 248 nm, ArF excimer laser at 193 nm, and 157 nm. Includes an F 2 laser.
- a cured product formed from the fluoropolymer By adjusting the irradiation time according to the irradiation intensity of the active energy ray, a cured product formed from the fluoropolymer can be produced.
- crosslinking can be performed by irradiating at an irradiation intensity of 0.1 to 500 mW / cm 2 for about 1 minute to 10 hours.
- the crosslinking reaction can proceed without using a photoinitiator.
- the unit (1) when the unit (1) includes a unit in which Z 1 has NR 1 NR 2 H and a unit in which Z 1 has OR 5 , the following reaction is caused by irradiation with active energy rays.
- the formula [III] it is considered that a de-COOR 5 reaction occurs and a crosslinked structure is formed in the same manner as in the reaction formula [II]. Thereby, it is considered that the fluoropolymer is crosslinked and cured.
- the unit in which Z 1 is NR 1 NR 2 H does not participate in the crosslinking reaction by irradiation with active energy rays, and bridges other units (for example, units in which Z 1 has OR 5 ) by irradiation with active energy. It is considered that the reaction is not inhibited.
- the cured product formed from the fluoropolymer has a high light transmittance of 300 to 400 nm because there is no functional group that absorbs ultraviolet light of 300 to 400 nm. Moreover, since it has a crosslinked structure, it is excellent in strength. Therefore, it is useful as a light-transmitting sealing material for UV-LEDs that can replace high-pressure mercury lamps having emission wavelengths such as 313, 365, and 405 nm. In general, since the sealing thickness of UV-LED is about 0.5 mm, the transmittance at 365 nm of a 0.5 mm thick sheet of cured product is required to be 70% or more, preferably 80% or more, and more than 90% Is particularly preferred.
- Examples 1 to 5 are examples. Each example was evaluated according to the method described below.
- the mass average molecular weight of the fluoropolymer is CF 2 ClCF 2 CHClF (trade name: AK-225cb, manufactured by Asahi Glass Co., Ltd.) for the fluoropolymer P1, and tetrahydrofuran as a solvent for the fluoropolymers Q1 and R1.
- the molecular weight was calculated as a PMMA (polymethyl methacrylate) equivalent molecular weight by gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- the fluorine-containing polymer was dissolved in AC-2000 for the fluorine-containing polymer P1, methanol for the fluorine-containing polymers P2 and P3, and monoglyme for the fluorine-containing polymers Q1, R1 and fluorine-containing polymer Q3.
- a mass% fluoropolymer solution was prepared. The solution was cast on a slide glass (manufactured by Matsunami Glass Co., Ltd., Micro Slide Glass S0313 white edge polish), and then naturally dried at room temperature for 2 hours. Subsequently, the solvent was volatilized by heating to 150 ° C. stepwise over about 3 hours to produce a film having a thickness of about 80 ⁇ m.
- the film was cut into a width of 1 cm and the peel strength was measured by a 90-degree peel test. A length of about 2 cm was peeled off at a peeling speed of 15 mm / min, and a 90-degree peel strength was determined from the average value of the portions considered to be in a steady state.
- the fluorinated polymer was dissolved in methanol to prepare a methanol solution containing 10% by mass of the fluorinated polymer.
- the solution was applied to a central portion on a 5 cm square, 1 mm thick stainless steel plate so as to form two lines having a width of 3 mm, a length of 3 cm, and an interval of 5 mm, and then naturally dried to form a coating film.
- a quartz plate of 2.5 cm ⁇ 4 cm and a thickness of 1 mm is pasted through the coating film, heated at 150 ° C. for 30 minutes, and then subjected to light intensity of 8 mW / cm 2 for 1 hour using the low-pressure mercury lamp.
- Fluoropolymer Q1 is soluble in acetone, methyl ethyl ketone, methyl acetate, tetrahydrofuran (THF), 1,2-dimethoxyethane (monoglyme), and insoluble in AK-225cb, AC-2000, hexane, methanol, and ethanol. there were.
- the fluoropolymer R1 was soluble in acetone, methyl ethyl ketone, methyl acetate, THF, and monoglyme, and insoluble in AK-225cb, AC-2000, hexane, methanol, and ethanol.
- Example 1 Production of fluoropolymer P2
- 1 g of fluoropolymer P1 was dissolved in 6 g of AC-2000, 0.12 g of a solution obtained by diluting hydrazine monohydrate (purity 79%, manufactured by Tokyo Chemical Industry Co., Ltd.) 5 times with methanol was added. And stirred vigorously. After stirring at room temperature for 1 hour, 2 g of methanol was added, and the mixture was further heated at 40 ° C. for 2 hours. A part of the reaction solution was cast on a glass plate, and the solvent was evaporated by heating at 60 ° C. to produce a film having a thickness of 10 ⁇ m.
- the obtained film was heated at 150 ° C. for 3 hours, then peeled off from the glass plate and again immersed in methanol.
- Tg glass transition temperature
- the obtained film was irradiated with UV light at a light intensity of 8 mW / cm 2 for 2 hours using a low-pressure mercury lamp (manufactured by Sen Special Light Company), and then peeled off from the glass plate.
- a low-pressure mercury lamp manufactured by Sen Special Light Company
- Example 2 Production of fluoropolymer Q2
- 1 g of fluoropolymer Q1 was dissolved in 6 g of monoglyme
- 0.08 g of a solution obtained by diluting hydrazine monohydrate (purity 79%, manufactured by Tokyo Chemical Industry Co., Ltd.) 5 times with methanol was added vigorously. Stir. After stirring at room temperature for 1 hour, the mixture was further heated at 40 ° C. for 2 hours. A part of the reaction solution was cast on a glass plate, and the solvent was evaporated by heating at 60 ° C. to produce a film having a thickness of 10 ⁇ m. An IR measurement was performed in the same manner as in Example 1.
- the obtained film was heated at 150 ° C. for 3 hours, then peeled off from the glass plate and dipped again in methanol.
- the elastic modulus was measured, a drop corresponding to Tg was observed at around 5 ° C., and a rubber-like flat portion that became almost constant up to at least 150 ° C. appeared at temperatures above Tg. Confirmed that is happening.
- the obtained film was irradiated with UV at a light intensity of 8 mW / cm 2 for 2 hours using the above-mentioned low-pressure mercury lamp, and then peeled off from the glass plate.
- a light intensity of 8 mW / cm 2 for 2 hours using the above-mentioned low-pressure mercury lamp, and then peeled off from the glass plate.
- Example 3 Production of fluoropolymer P3
- a solution obtained by diluting a 50% hydroxylamine aqueous solution obtained by Wako Pure Chemical Industries, Ltd.
- methanol 50% hydroxylamine aqueous solution (manufactured by Wako Pure Chemical Industries, Ltd.) 5 times with methanol was added and stirred vigorously.
- 3 g of methanol was added, and the mixture was further heated at 40 ° C. for 2 hours.
- a part of the reaction solution was cast on a glass plate, and the solvent was evaporated by heating at 60 ° C. to produce a film having a thickness of 10 ⁇ m.
- the obtained film was irradiated with UV at a light intensity of 8 mW / cm 2 for 2 hours using the above-mentioned low-pressure mercury lamp, then peeled off from the glass plate and immersed in methanol or AC-2000.
- a drop corresponding to Tg was observed at around 10 ° C., and a rubber-like flat portion that became almost constant up to at least 150 ° C. appeared at a temperature above Tg, so that the crosslinking reaction was caused by UV irradiation. Confirmed that it was happening.
- Example 4 Production of fluoropolymer Q3
- a 50% hydroxylamine aqueous solution manufactured by Wako Pure Chemical Industries, Ltd.
- methanol 50% hydroxylamine aqueous solution
- a part of the reaction solution was cast on a glass plate, and the solvent was evaporated by heating at 60 ° C. to produce a film having a thickness of 10 ⁇ m.
- An IR measurement was conducted in the same manner as in Example 1.
- the obtained film was irradiated with UV light at a light intensity of 8 mW / cm 2 for 2 hours using the above-mentioned low-pressure mercury lamp, then peeled off from the glass plate and immersed again in methanol or monoglyme. It was.
- the elastic modulus was measured, a decrease corresponding to Tg was observed at around 5 ° C., and a rubbery flat portion appeared at a temperature of Tg or higher, so that it was confirmed that a crosslinking reaction occurred by UV irradiation.
- Example 5 Production of fluoropolymer R3
- a solution obtained by diluting a 50% aqueous hydroxylamine solution manufactured by Wako Pure Chemical Industries, Ltd.
- methanol 50% aqueous hydroxylamine solution
- a part of the reaction solution was cast on a glass plate, and the solvent was evaporated by heating at 60 ° C. to produce a film having a thickness of 10 ⁇ m.
- An IR measurement was conducted in the same manner as in Example 1.
- the obtained film was irradiated with UV light at a light intensity of 8 mW / cm 2 for 2 hours using the above-mentioned low-pressure mercury lamp, then peeled off from the glass plate and immersed again in methanol or monoglyme. It was.
- the elastic modulus was measured, a decrease corresponding to Tg was observed at around 15 ° C., and a rubber-like flat portion appeared at a temperature of Tg or higher, and it was confirmed that a crosslinking reaction occurred by UV irradiation.
- the fluoropolymer was dissolved in methanol.
- the peel strength of the film was improved with respect to the fluoropolymer P1 and with respect to the fluoropolymer Q1 in Example 4.
- the side chain having a highly polar group such as —CONHOH group and —CONHNH 2 group is a matrix composed of a non-polar polymer main chain. It is considered that the peel strength is improved because it is difficult to be compatible with the phase and therefore it is easily present at the interface.
- Example 4 since the unit derived from TrFE is included, the —CONHOH group is easily compatible with the matrix phase composed of the main chain of the nonpolar polymer, but the —CONHOH group is added to the glass plate as the base material. It is thought that the peel strength was improved because the interaction with the existing OH groups was facilitated. In Example 1, in the evaluation of adhesiveness and chemical resistance, there was no peeling between the stainless steel plate and the quartz plate, and the adhesiveness and chemical resistance were exhibited.
- the fluorine-containing polymer which is excellent in the solubility to alcohol and can be hardened can be provided.
- the fluorine-containing polymer of the present invention is useful as an optical material, an element sealing material, an inorganic EL phosphor dispersion material, an optical waveguide material, a heat- and chemical-resistant sealing material, an adhesive, and a coating material.
- the coating composition of the present invention is useful as a mold release agent, antifouling coating material, chemical-resistant protective coating material and the like.
- the cured product formed from the fluoropolymer of the present invention is useful as a translucent sealing material for UV-LED.
- a molded article made of a cured product formed from the fluoropolymer of the present invention is useful as an optical fiber core material or cladding material, an optical waveguide core material or cladding material, or a lens material.
- a substrate provided with a cured product formed from the fluoropolymer of the present invention is useful as a light-emitting device, a semiconductor device, a solar cell device, a short-wavelength light-emitting device, and the like, and in particular, a light-emitting device and a fluoropolymer. It is useful as a light emitting device having a cured product.
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Abstract
Description
[1]下式(1)で表される単位を含み、式(1)で表される単位の少なくとも一部は、Z1がNR1NR2HまたはNR3OR4である、含フッ素重合体。
X1およびX2は、それぞれ独立に、水素原子またはフッ素原子であり、
Q1は、単結合またはエーテル性酸素原子であり、
Rf1は、フルオロアルキレン基、または炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルキレン基であり、
Z1は、NR1NR2H、NR3OR4またはOR5であり、
R1、R2、R3およびR4は、それぞれ独立に、水素原子またはアルキル基であり、
R5は、アルキル基である。)
[2]式(1)で表される単位の少なくとも一部が、-[CF2-CF(O(CF2)3CONHNH2)]-または-[CF2-CF(O(CF2)3CONHOH)]-である、[1]の含フッ素重合体。
[3]Z1がNR1NR2Hである単位とZ1がOR5である単位とを含む、[1]または[2]の含フッ素重合体。
[4]Z1がNR3OR4である単位を含む、[1]または[2]の含フッ素重合体。
[5]さらに、フルオロエチレン由来の単位を含む、[1]~[4]のいずれかの含フッ素重合体。
[6]さらに、下式(3)で表される単位(ただし、フルオロエチレン由来の単位を除く。)を含む、[1]~[5]のいずれかの含フッ素重合体。
-[CX3X4-CY1Y2]-・・・(3)
(式(3)中、
X3およびX4は、それぞれ独立に、水素原子、フッ素原子または塩素原子であり、
Y1は、水素原子、フッ素原子または塩素原子であり、
Y2は、水素原子、フルオロアルキル基、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルキル基、フルオロアルコキシ基、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルコキシ基、フルオロアルケニル基、または炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルケニル基である。)
[7]-COZ1で表される基の割合が0.1~4mmol/gである、[1]~[6]のいずれかの含フッ素重合体。
[8]前記[1]~[7]のいずれかに記載の含フッ素重合体の製造方法であって、下式(1a)で表される単位を含む含フッ素重合体と、下式(5)で表されるヒドラジン化合物および下式(6)で表されるヒドロキシルアミン化合物からなる群より選択される1以上の化合物と反応させることを特徴とする製造方法。
NHR3OR4 (6)
(式(1a)中、X1、X2、Q1、Rf1およびR5は、請求項1で定義されたとおりであり、
式(6)中、R1およびR2は、請求項1で定義されたとおりであり、
式(7)中、R3およびR4は、請求項1で定義されたとおりである。)
[9]前記[1]~[7]のいずれかの含フッ素重合体を、加熱および活性エネルギー線照射の少なくとも一方を行うことを特徴とする含フッ素重合体の硬化物の製造方法。
[10]発光素子と、[1]~[7]のいずれかの含フッ素重合体の硬化物とを備えることを特徴とする発光装置。
式(a)で表される化合物を化合物(a)と記す場合がある。他の式で表される化合物も同様に記す。式(b)で表される単位を単位(b)と記す場合がある。他の式で表される単位も同様に記す。
「透光封止」とは、光を透過させる機能と封止機能とを併有する封止であることを意味する。
重合体における「単位」とは、単量体が重合することによって形成する該単量体に由来する部分を意味する。
「フルオロエチレン」とは、テトラフルオロエチレン(CF2=CF2)の0~3個のフッ素原子が水素原子またはフッ素以外のハロゲン原子(例えば、塩素、臭素、ヨウ素)に置換された化合物を意味する。
アルキル基、フルオロアルキル基、フルオロアルキレン基、フルオロアルコキシ基、フルオロアルケニル基等の炭素原子鎖を有する基は、直鎖状であってもよく、分岐状であってもよい。
「フルオロアルキル基」は、アルキル基の水素原子の1個以上がフッ素原子に置換された基をいう。フルオロアルキル基中のフッ素原子の割合は、(フルオロアルキル基中のフッ素原子数)/(フルオロアルキル基に対応する同一炭素原子数のアルキル基中の水素原子数)×100(%)で表現した場合に50%以上であるのが好ましく、100%すなわちペルフルオロアルキル基が特に好ましい。フルオロアルキレン基、フルオロアルコキシ基、フルオロアルケニル基についても同様であり、ペルフルオロアルキレン基、ペルフルオロアルコキシ基、ペルフルオロアルケニル基であるのが好ましい。
「硬化」とは、特に言及しない限り、架橋により硬化することを意味する。
本発明の含フッ素重合体は、下式(1)で表される単位(以下、「単位(1)」とも記す。)を含み、単位(1)の少なくとも一部は、Z1がNR1NR2HまたはNR3OR4である。
X1およびX2は、それぞれ独立に、水素原子またはフッ素原子であり、
Q1は、単結合またはエーテル性酸素原子であり、
Rf1は、フルオロアルキレン基、または炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルキレン基であり、
Z1は、NR1NR2H、NR3OR4またはOR5であり、
R1、R2、R3およびR4は、それぞれ独立に、水素原子またはアルキル基であり、
R5は、アルキル基である。)
単位(1)中、Q1は、エーテル性酸素原子が好ましい。
単位(1)中、Rf1がフルオロアルキレン基である場合、炭素数は1~6が好ましく、1~4が特に好ましい。炭素数が3以上の場合には、熱安定性に優れる点から直鎖構造が好ましい。フルオロアルキレン基は、熱安定性に優れる点からペルフルオロアルキレン基が好ましい。すなわち、Rf1としては、炭素数1~6のペルフルオロアルキレン基が好ましく、炭素数1~4のペルフルオロアルキレン基が特に好ましい。
単位(1)中、Rf1が、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルキレン基である場合、炭素数は2~10が好ましく、2~6が特に好ましい。炭素数が3以上の場合には、熱安定性に優れる点から直鎖構造が好ましい。フルオロアルキレン基は、熱安定性に優れる点からペルフルオロアルキレン基が好ましい。すなわち、Rf1としては、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2~10のペルフルオロアルキレン基が好ましく、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2~6のペルフルオロアルキレン基が特に好ましい。
-[CF2-CF(O(CF2)2CONHNH2)]-
-[CF2-CF(O(CF2)2CON(CH3)NHCH3)]-
-[CF2-CF(O(CF2)2CONHOH)]-
-[CF2-CF(O(CF2)2CONHOCH3)]-
-[CF2-CF(O(CF2)3CONHNH2)]-
-[CF2-CF(O(CF2)3CON(CH3)NHCH3)]-
-[CF2-CF(O(CF2)3CONHOH)]-
-[CF2-CF(O(CF2)3CONHOCH3)]-
-[CF2-CF(O(CF2)4CONHNH2)]-
-[CF2-CF(O(CF2)4CON(CH3)NHCH3)]-
-[CF2-CF(O(CF2)4CONHOH)]-
-[CF2-CF(O(CF2)4CONHOCH3)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)2CONHNH2)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)2CON(CH3)NHCH3)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)2CONHOH)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)2CONHOCH3)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)3CONHNH2)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)3CON(CH3)NHCH3)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)3CONHOH)]-
-[CF2-CF(OCF2CF(CF3)O(CF2)3CONHOCH3)]-
-[CF2-CF(O(CF2)3O(CF2)2CONHNH2)]-
-[CF2-CF(O(CF2)3O(CF2)2CON(CH3)NHCH3)]-
-[CF2-CF(O(CF2)3O(CF2)2CONHOH)]-
-[CF2-CF(O(CF2)3O(CF2)2CONHOCH3)]-
-[CF2-CF(O(CF2)2O(CF2)2CONHNH2)]-
-[CF2-CF(O(CF2)2O(CF2)2CON(CH3)NHCH3)]-
-[CF2-CF(O(CF2)2O(CF2)2CONHOH)]-
-[CF2-CF(O(CF2)2O(CF2)2CONHOCH3)]-
-[CH2-CF(CF2OCF(CF3)CONHNH2)]-
-[CH2-CF(CF2OCF(CF3)CON(CH3)NHCH3)]-
-[CH2-CF(CF2OCF(CF3)CONHOH)]-
-[CH2-CF(CF2OCF(CF3)CONHOCH3)]-
-[CH2-CF(CF2OCF(CF3)CF2OCF(CF3)CONHNH2)]-
-[CH2-CF(CF2OCF(CF3)CF2OCF(CF3)CON(CH3)NHCH3)]-
-[CH2-CF(CF2OCF(CF3)CF2OCF(CF3)CONHOH)]-
-[CH2-CF(CF2OCF(CF3)CF2OCF(CF3)CONHOCH3)]-
入手容易の点から、単位(1)は、-[CF2-CF(O(CF2)3CONHNH2)]-または-[CF2-CF(O(CF2)3CONHOH)]-であることが特に好ましい。
CX1X2=CF-Q1-Rf1-COOR5・・・(11)
(式(11)中、X1、X2、Q1、Rf1およびOR5は、式(1)で定義されたとおりであり、例示も好ましい範囲も同様である。)
本発明の含フッ素重合体は、さらに、フルオロエチレン由来の単位(以下、「単位(2)」とも記す。)、後述する式(3)で表される単位(以下、「単位(3)」とも記す。)、その他の単位(以下、「単位(4)」とも記す。)を有していてもよい。
単位(2)の具体例としては、テトラフルオロエチレン(CF2=CF2)(TFE)、トリフルオロエチレン(CF2=CHF)(TrFE)、クロロトリフルオロエチレン(CFCl=CF2)、ビニリデンフルオリド(CF2=CH2)等に由来する単位が挙げられる。耐光性に優れる点から、TFE、TrFE、クロロトリフルオロエチレンに由来する単位が好ましい。極性の高い-COZ1基が界面に存在しやすくなることで基材に対する接着性に優れる点からは、TFEに由来する単位が特に好ましい。TFEに由来する単位ほど含フッ素重合体の結晶性が高くなく、光散乱が生じにくく、透明性が高い点からは、TrFE、クロロトリフルオロエチレンに由来する単位が特に好ましい。アルコールに対する溶解性に優れる点からは、TrFEに由来する単位が特に好ましい。
単位(3)は下式(3)で表される単位(ただし、フルオロエチレン由来の単位を除く。)である。
-[CX3X4-CY1Y2]-・・・(3)
(式(3)中、
X3およびX4は、それぞれ独立に、水素原子、フッ素原子または塩素原子であり、
Y1は、水素原子、フッ素原子または塩素原子であり、
Y2は、水素原子、フルオロアルキル基、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルキル基、フルオロアルコキシ基、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルコキシ基、フルオロアルケニル基、または炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルケニル基である。)
-[CH2-CH2]-、-[CF2-CF(CF3)]-、-[CH2-CF(CF3)]-、-[CF2-CF(OCF3)]-、-[CF2-CF(OCF2CF3)]-、-[CF2-CF(O(CF2)2CF3)]-、-[CF2-CF(O(CF2)3CF3)]-、-[CF2-CF(OCF2CF(CF3)O(CF2)2CF3)]-、-[CF2-CF((CF2)4CF=CF2)]-、-[CF2-CF((CF2)5CF=CF2)]-、-[CF2-CF((CF2)6CF=CF2)]-。
CX3X4=CY1Y2・・・(31)
(式(31)中、X3、X4、Y1およびY2は、式(3)で定義されたとおりであり、例示も好ましい範囲も同様である。)
本発明の含フッ素重合体中の-COZ1で表される基の割合は、含フッ素重合体の質量に対して、0.022~7.1mmol/gが好ましく、0.1~4mmol/gがより好ましく、0.1~3mmol/gがさらに好ましく、0.2~1mmol/gが特に好ましい。ここで、-COZ1で表される基の割合は、-CONR1NR2H、-CONR3OR4および-COOR5の合計の割合である。前記範囲の下限値以上であれば、アルコールに対する溶解性がより向上する。前記範囲の上限値以下であれば、含フッ素重合体を活性エネルギー線照射にて硬化する際に、表面のみが硬化することなく、かつ硬化物における泡の発生が抑えられる。含フッ素重合体を加熱にて硬化する際に、硬化物における泡の発生を抑えられる。
本発明の含フッ素重合体の質量平均分子量は、3,000~200,000が好ましい。このうち、含フッ素重合体の質量平均分子量が10,000以下の場合には粘度が1~10,000Pa・sで、25~100℃加熱により10Pa・s以下となり自重で流動する。質量平均分子量が10,000を超えると25℃では10,000Pa・s以上の高粘度となり、流動させるためには100~150℃の加熱が必要となる。さらに20,000を超えると0.1~10MPaの加圧により流動させる必要がある。
含フッ素重合体は、下式(1a)で表される単位(以下、「単位(1a)」とも記す。)を含む含フッ素重合体と、下式(5)で表されるヒドラジン化合物(以下、「ヒドラジン化合物」とも記す。)および下式(6)で表されるヒドロキシルアミン化合物(以下、「ヒドロキシルアミン化合物」とも記す。)からなる群より選択される1以上の化合物と反応させる方法により得られる。
NHR3OR4 (6)
(式(1a)中、X1、X2、Q1、Rf1およびR5は、式(1)で定義されたとおりであり、例示も好ましい範囲も同様であり、
式(5)中、R1およびR2は、式(1)で定義されたとおりであり、例示も好ましい範囲も同様であり、
式(6)中、R3およびR4は、式(1)で定義されたとおりであり、例示も好ましい範囲も同様である。)
(a)単位(1a)を含む含フッ素重合体とヒドラジン化合物とを反応させて、次いで、ヒドロキシルアミン化合物を反応させる
(b)単位(1a)を含む含フッ素重合体とヒドロキシルアミン化合物とを反応させて、次いで、ヒドラジン化合物を反応させる
(c)単位(1a)を含む含フッ素重合体とヒドロキシルアミン化合物とヒドラジン化合物とを反応させる
単位(1a)は、Z1がNR1NR2HおよびNR3OR4以外の単位(1)に相当する。単位(1a)を含む含フッ素重合体は、さらに、前記した単位(2)、単位(3)および単位(4)を有していてもよい。単位(1a)を含む含フッ素重合体における、単位(1a)、単位(2)、単位(3)および単位(4)の割合は、好ましいものを含め、単位(1)、単位(2)、単位(3)および単位(4)の割合について前記したとおりである。単位(1a)を含む含フッ素重合体における、-COOR5の割合は、好ましいものを含め、-COZ1の割合について前記したとおりである。
ヒドラジン化合物として、ヒドラジン、ヒドラジン・1水和物、メチルヒドラジン、1,2-ジメチルヒドラジンが挙げられ、安全性および得られる含フッ素重合体のアルコールへの溶解性がより優れる点から、ヒドラジン・1水和物が好ましい。ヒドラジン化合物は、水溶液の形態、塩の形態で、単位(1a)を含む含フッ素重合体との反応に供されてもよい。ヒドラジン化合物は、市販品を用いることができる。
ヒドロキシルアミン化合物として、ヒドロキシルアミン、N-メチルヒドロキシルアミン、N,O-ジメチルヒドロキシルアミン、イソプロピルヒドロキシルアミンが挙げられ、得られる含フッ素重合体のアルコールへの溶解性がより優れる点から、ヒドロキシルアミンが好ましい。ヒドロキシルアミン化合物は、水溶液の形態、塩の形態で、単位(1a)を含む含フッ素重合体との反応に供されてもよいが、安全性の点から水溶液の形態が好ましい。ヒドロキシルアミン化合物は、市販品を用いることができる。
ヒドラジン化合物およびヒドロキシルアミン化合物からなる群より選択される1以上の化合物は、単位(1a)を含む含フッ素重合体の-COOR5で表される基1モルに対して、所望の-COZ1の量である含フッ素重合体が得られる限り特に限定されないが、0.1~20モルが好ましく、0.3~15モルがより好ましく、0.5~10モルが特に好ましい。
フッ素化アルカンとしては、炭素数4~8の化合物が好ましい。市販品としては、たとえばCF3CH2CF2H(HFC-245fa)、CF3CH2CF2CH3(HFC-365mfc)、ペルフルオロヘキサン、1H-ペルフルオロヘキサン、ペルフルオロオクタン、C6F13H(旭硝子社製、アサヒクリン(登録商標)AC-2000)、C6F13C2H5(旭硝子社製、アサヒクリン(登録商標)AC-6000)、C2F5CHFCHFCF3(ケマーズ社製、バートレル(登録商標)XF)等が挙げられる。フッ素化芳香族化合物としては、たとえばヘキサフルオロベンゼン、トリフルオロメチルベンゼン、ペルフルオロトルエン、ビス(トリフルオロメチル)ベンゼン等が挙げられる。フルオロアルキルエーテルとしては、炭素数4~12の化合物が好ましい。市販品としては、たとえばCF3CH2OCF2CF2H(旭硝子社製、アサヒクリン(登録商標)AE-3000)、C4F9OCH3(3M社製、ノベック(登録商標)7100)、C4F9OC2H5(3M社製、ノベック(登録商標)7200)、C2F5CF(OCH3)C3F7(3M社製、ノベック(登録商標)7300)等が挙げられる。フッ素化アルキルアミンとしては、たとえばペルフルオロトリプロピルアミン、ペルフルオロトリブチルアミン等が挙げられる。フルオロアルコールとしては、たとえば2,2,3,3-テトラフルオロプロパノール、2,2,2-トリフルオロエタノール、ヘキサフルオロイソプロパノール等が挙げられる。その他、ジクロロペンタフルオロプロパン(HCFC-225)、ペルフルオロ(2-ブチルテトラヒドロフラン)等が挙げられる。ジクロロペンタフルオロプロパンは、市販品としてAK-225(旭硝子社製)が挙げられる。
本発明の含フッ素重合体から形成される硬化物は、前記含フッ素重合体のみを使用して製造できる。また、前記含フッ素重合体を含む硬化性組成物(ただし、溶媒は含まない)や、前記硬化性組成物および溶媒を含むコーティング組成物から製造することもできる。
本発明における含フッ素重合体から形成される硬化物は、含フッ素重合体を、加熱および活性エネルギー線照射の少なくとも一方を含む方法によって製造される。含フッ素重合体から形成される硬化物は、含フッ素重合体からなる成形体または含フッ素重合体を含む硬化性組成物からなる成形体を製造し、次いで該成形体を、加熱および活性エネルギー線照射の少なくとも一方を含む方法によって製造されるのが好ましい。活性エネルギー線照射する場合、成形体を加熱することで硬化物を製造する場合に比べて、より低温で硬化物を得ることができる。また、基材の上で硬化反応を行う際等において、基材の種類、特に基材の耐熱性が制限されない点で好ましい。なお、加熱および活性エネルギー線照射の両方が行われる場合、加熱は、活性エネルギー線の照射の前、同時、および/または後に行うことができる。
成形体は、硬化性組成物またはコーティング組成物を使用して製造できる。薄膜状の成形体や基材と一体化した薄膜状成形体を製造する際にはコーティング組成物を使用することが好ましい。硬化性組成物を使用する方法としては、加熱することにより流動させて、型に流し込み所定の形状とする方法、型の表面にキャストしてシート状やフィルム状の成形体する方法、押出成形、トランスファー成形等により所定の形状に成形する方法、成形されたシートやフィルムを所定の形状に切断する、折り曲げる等の二次加工する方法が挙げられる。
加熱の温度は、特に限定されないが、100~200℃が好ましく、120~180℃が特に好ましい。加熱の時間は、特に限定されないが、10分~10時間が好ましく、30分~4時間が特に好ましい。段階的に昇温する方法も効果的である。
-Q1-Rf1-CONR1NR2H +-Q1-Rf1-COOR5 → -Q1-Rf1-CONR1NR2CO-Rf1-Q1- +R5OH
活性エネルギー線の波長は、150~300nmが好ましく、200~260nmが特に好ましい。活性エネルギー線の発生源としては、250~300nmにはメタルハライドランプ、185、254nmには低圧水銀ランプ、172nm、222nmにはエキシマランプ、248nmにはKrFエキシマレーザー、193nmにはArFエキシマレーザー、157nmにはF2レーザーが挙げられる。
-Q1-Rf1-CONR3OR4 → -Q1-Rf1・+・CONR3OR4の分解物
-Q1-Rf1・+・Rf1-Q1- → -Q1-Rf1-Rf1-Q1-
-Q1-Rf1-COOR5 → -Q1-Rf1・+CO2+R5
-Q1-Rf1・+・Rf1-Q1- → -Q1-Rf1-Rf1-Q1-
含フッ素重合体から形成される硬化物は、300~400nmの紫外光を吸収する官能基が存在しないため、300~400nmの光透過性が高い。また、架橋構造を有することから強度に優れる。したがって、313、365、405nm等の発光波長を有する高圧水銀ランプに替わるUV-LEDの透光封止材として有用である。一般にUV-LEDの封止厚さは0.5mm程度であるため、硬化物の0.5mm厚さのシートの365nmにおける透過率は70%以上必要であり、80%以上が好ましく、90%以上が特に好ましい。
(質量平均分子量)
含フッ素重合体の質量平均分子量は、含フッ素重合体P1についてはCF2ClCF2CHClF(旭硝子社製、商品名:AK-225cb)を、含フッ素重合体Q1およびR1についてはテトラヒドロフランを溶媒として用いて、ゲルパーミエーションクロマトグラフィ(GPC)によりPMMA(ポリメチルメタクリレート)換算分子量として算出した。
(含フッ素重合体中の-COOCH3基含量)
含フッ素重合体中の-COOCH3基含量は、19F-NMRから求めた。
含フッ素重合体を含フッ素重合体P1についてはAC-2000、含フッ素重合体P2およびP3についてはメタノール、含フッ素重合体Q1、R1および含フッ素重合体Q3についてはモノグライムに溶解して、濃度15質量%の含フッ素重合体溶液を調整した。該溶液をスライドガラス上(松波硝子社マイクロスライドガラスS0313白縁磨)に流延した後、室温で2時間自然乾燥した。次いで、約3時間かけて150℃まで段階的に昇温して加熱することにより溶媒を揮発させて、厚さ約80μmのフィルムを製造した。該フィルムを幅1cmにカットして90度剥離試験により剥離強度を測定した。剥離速度15mm/分で約2cmの長さ部分を剥離して、定常状態となったと思われる部分の平均値から90度剥離強度を求めた。
各例で製造したフィルムを用い、日立ハイテク社製TMA/EXSTAR SS7100の粘弾性解析モードにより測定した。測定温度範囲:-40℃~150℃、昇温速度:5℃/分、周波数:0.05Hz。
メタノールの0.5gに、含フッ素重合体の含有量が5質量%となる量の含フッ素重合体を加え、温度40℃で、1時間撹拌混合した後、室温(25℃)まで冷却した。得られた混合物が、孔径0.5μm、直径25mmのPTFE(ポリテトラフルオロエチレン)製フィルタにより、混合物1mLが目詰まりせずにろ過可能かどうかで判定した。ろ過可能であれば「溶解した」とし、ろ過不可能であれば「溶解せず」とした。
含フッ素重合体をメタノールに溶解して、含フッ素重合体が10質量%であるメタノール溶液を調製した。5cm角、1mm厚さのステンレス製板上の中央部に幅3mm、長さ3cm、間隔5mmの2本の線状となるように該溶液を塗布、自然乾燥して塗膜を作成した。2.5cm×4cm、1mm厚さの石英板を、該塗膜を介して貼り付けて150℃、30分加熱した後、上記の低圧水銀ランプを用いて8mW/cm2の光強度で1時間UV照射することにより、ステンレス板と石英板を貼り合わせた複合板を3つ作製した。複合板を、60℃の水中、50℃のエタノール中、および、50℃の酢酸メチル中に、1つずつ浸漬し、24時間保持した後、ステンレス板と石英板との剥がれの有無を確認した。3つの複合板の全てにおいて剥がれが無いか、1つ以上で剥がれがあるかで判定した。3つ全てにおいて剥がれが無ければ、接着性および耐薬品性を「有する」とした。
内容積が200mLの撹拌機付きステンレス製オートクレーブに、重合開始剤としてV601(和光純薬社製)の0.1gを仕込み減圧脱気した後、CF2=CFOCF2CF2CF2COOCH3の20g、CF2=CFOCF2CF2CF3(以下、「PPVE」とも記す。)の40g、AC-2000の103gを仕込んだ。撹拌しながらテトラフルオロエチレン(TFE)の12gを圧入した後、内温を80℃まで昇温して重合を開始した。圧力が0.72MPaを維持しつつTFEを追加しながら6時間重合を行ったところ、TFEの全仕込み量は28.3gであった。
内容積が200mLの撹拌機付きステンレス製オートクレーブに、重合開始剤としてV601(和光純薬社製)の0.4gを仕込み減圧脱気した後、CF2=CFOCF2CF2CF2COOCH3の2g、PPVEの26g、AC-2000の159gを仕込んだ。撹拌しながらトリフルオロエチレン(TrFE)の13gを圧入した後、内温を70℃まで昇温して4時間重合を行ったところ、圧力が0.71MPaから0.53MPaまで低下した。
内容積が200mLの撹拌機付きステンレス製オートクレーブに、重合開始剤としてV601(和光純薬社製)の0.1gを仕込み減圧脱気した後、CF2=CFOCF2CF2CF2COOCH3の8gを仕込んだ。ヘキサフルオロプロピレン(HFP)の150gを圧入した後、撹拌しながらさらにTrFEの42gを圧入した。内温を70℃まで昇温して4時間重合を行ったところ、圧力が2.88MPaから2.85MPaまで低下した。
含フッ素重合体P1の1gをAC-2000の6gに溶解した後、ヒドラジン・1水和物(純度79%、東京化成社製)をメタノールで5倍に希釈した溶液の0.12gを添加して激しく撹拌した。室温で1時間撹拌した後、メタノールの2gを添加して、さらに40℃で2時間加熱した。反応液の一部をガラス板上に流延して60℃加熱により溶媒を揮発させて、厚さが10μmのフィルムを製造した。赤外吸収(IR)を測定したところ単位(a1)中の-COOCH3基のC=Oに基づく1,794cm-1の吸収が約1/2に減少し、-CONHNH2基のC=Oに基づく1,718cm-1の吸収が新たに生成したことから、単位(a2)の生成を確認した。反応液に製造例1の含フッ素重合体P1と同様にメタノールを添加したところ重合体は沈殿しなかったため、ヘキサンを添加したところ重合体が沈殿した。沈殿した重合体を60℃で真空乾燥し、含フッ素重合体P2の0.82gを得た。
含フッ素重合体Q1の1gをモノグライムの6gに溶解した後、ヒドラジン・1水和物(純度79%、東京化成社製)をメタノールで5倍に希釈した溶液の0.08gを添加して激しく撹拌した。室温で1時間撹拌した後、さらに40℃で2時間加熱した。反応液の一部をガラス板上に流延して60℃加熱により溶媒を揮発させて、厚さが10μmのフィルムを製造した。例1と同様にしてIR測定を行ったところ、1,794cm-1の吸収が約1/2に減少し、1,718cm-1の吸収が新たに生成したことから、単位(a2)の生成を確認した。反応液にヘキサンを添加して沈殿した重合体を60℃で真空乾燥し、含フッ素重合体Q2の0.87gを得た。
含フッ素重合体P1の1gをAC-2000の5gに溶解した後、50%ヒドロキシルアミン水溶液(和光純薬社製)をメタノールで5倍に希釈した溶液の0.30gを添加して激しく撹拌した。室温で1時間撹拌した後、メタノールの3gを添加して、さらに40℃で2時間加熱した。反応液の一部をガラス板上に流延して60℃加熱により溶媒を揮発させて、厚さ10μmのフィルムを製造した。例1と同様にしてIR測定を行ったところ、単位(a1)の-COOCH3基に基づく1,794cm-1の吸収がほぼ消失して、-CONHOH基に基づく1,740cm-1付近および1,650cm-1付近のブロードな吸収に変化したことから、単位(a1)がすべて単位(a3)に置き換わった構造を有する含フッ素重合体P3が生成したことを確認した。反応液にヘキサンを添加して沈殿した重合体を60℃で真空乾燥し、含フッ素重合体P3の0.85gを得た。
含フッ素重合体Q1の1gをモノグライムの6gに溶解した後、50%ヒドロキシルアミン水溶液(和光純薬社製)をメタノールで5倍に希釈した溶液の0.25gを添加して激しく撹拌した。室温で1時間撹拌した後、メタノールの2gを添加して、さらに40℃で2時間加熱した。反応液の一部をガラス板上に流延して60℃加熱により溶媒を揮発させて、厚さが10μmのフィルムを製造した。例1と同様にしてIR測定を行ったところ、単位(a1)の-COOCH3基に基づく1,794cm-1の吸収がほぼ消失して、-CONHOH基に基づく1,740cm-1付近および1,650cm-1付近のブロードな吸収に変化したことから、単位(a1)がすべて単位(a3)に置き換わった構造を有する含フッ素重合体Q3が生成したことを確認した。反応液にヘキサンを添加して沈殿した重合体を60℃で真空乾燥し、含フッ素重合体Q3の0.81gを得た。
含フッ素重合体R1の1gをモノグライムの6gに溶解した後、50%ヒドロキシルアミン水溶液(和光純薬社製)をメタノールで5倍に希釈した溶液の0.25gを添加して激しく撹拌した。室温で1時間撹拌した後、メタノールの2gを添加して、さらに40℃で2時間加熱した。反応液の一部をガラス板上に流延して60℃加熱により溶媒を揮発させて、厚さが10μmのフィルムを製造した。例1と同様にしてIR測定を行ったところ、単位(a1)の-COOCH3基に基づく1,794cm-1の吸収がほぼ消失して、-CONHOH基に基づく1,740cm-1付近および1,650cm-1付近のブロードな吸収に変化したことから、単位(a1)がすべて単位(a3)に置き換わった構造を有する含フッ素重合体R3が生成したことを確認した。反応液にヘキサンを添加して沈殿した重合体を60℃で真空乾燥し、含フッ素重合体R3の0.87gを得た。
例1では、接着性および耐薬品性の評価において、ステンレス板と石英板との剥がれが無く、接着性および耐薬品性を有していた。
本発明の含フッ素重合体は、光学材料、素子用封止材、無機EL蛍光体分散材、光導波路用材料、耐熱・耐薬品性のシーリング材、接着剤、コーティング材として有用である。 本発明のコーティング組成物は、離型剤、防汚コート用材料、耐薬品保護コート用材料等に有用である。
本発明の含フッ素重合体から形成される硬化物は、UV-LED用の透光封止材として有用である。
本発明の含フッ素重合体から形成される硬化物からなる成形品は、光ファイバのコア材料やクラッド材料、光導波路のコア材料やクラッド材料、レンズ用材料として有用である。
本発明の含フッ素重合体から形成される硬化物を備える基材は、発光素子、半導体素子、太陽電池素子、短波長光発光素子等として有用であり、特に、発光素子と、含フッ素重合体の硬化物とを有する、発光装置として有用である。
なお、2015年9月1日に出願された日本特許出願2015-171756号の明細書、特許請求の範囲および要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (10)
- 式(1)で表される単位の少なくとも一部が、-[CF2-CF(O(CF2)3CONHNH2)]-または-[CF2-CF(O(CF2)3CONHOH)]-である、請求項1に記載の含フッ素重合体。
- Z1がNR1NR2Hである単位とZ1がOR5である単位とを含む、請求項1または2に記載の含フッ素重合体。
- Z1がNR3OR4である単位を含む、請求項1または2に記載の含フッ素重合体。
- さらに、フルオロエチレン由来の単位を含む、請求項1~4のいずれか一項に記載の含フッ素重合体。
- さらに、下式(3)で表される単位(ただし、フルオロエチレン由来の単位を除く。)を含む、請求項1~5のいずれか一項に記載の含フッ素重合体。
-[CX3X4-CY1Y2]-・・・(3)
(式(3)中、
X3およびX4は、それぞれ独立に、水素原子、フッ素原子または塩素原子であり、
Y1は、水素原子、フッ素原子または塩素原子であり、
Y2は、水素原子、フルオロアルキル基、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルキル基、フルオロアルコキシ基、炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上のフルオロアルコキシ基、フルオロアルケニル基、または炭素-炭素原子間にエーテル性酸素原子を有する炭素数2以上フルオロアルケニル基である。) - -COZ1で表される基の割合が0.1~4mmol/gである、請求項1~6のいずれか一項に記載の含フッ素重合体。
- 請求項1~7のいずれか一項に記載の含フッ素重合体を、加熱および活性エネルギー線照射の少なくとも一方を行うことを特徴とする含フッ素重合体の硬化物の製造方法。
- 発光素子と、請求項1~7のいずれか一項に記載の含フッ素重合体の硬化物とを備えることを特徴とする発光装置。
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CN108026211B (zh) | 2020-04-24 |
US20180162974A1 (en) | 2018-06-14 |
KR20180048455A (ko) | 2018-05-10 |
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