WO2009087814A1 - 含フッ素エラストマー - Google Patents
含フッ素エラストマー Download PDFInfo
- Publication number
- WO2009087814A1 WO2009087814A1 PCT/JP2008/070701 JP2008070701W WO2009087814A1 WO 2009087814 A1 WO2009087814 A1 WO 2009087814A1 JP 2008070701 W JP2008070701 W JP 2008070701W WO 2009087814 A1 WO2009087814 A1 WO 2009087814A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluorine
- containing elastomer
- perfluoro
- mol
- vinyl ether
- Prior art date
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229920001971 elastomer Polymers 0.000 title claims abstract description 33
- 239000000806 elastomer Substances 0.000 title claims abstract description 33
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 33
- 239000011737 fluorine Substances 0.000 title claims abstract description 33
- -1 alkyl vinyl ether Chemical compound 0.000 claims abstract description 58
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 9
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000007334 copolymerization reaction Methods 0.000 claims description 20
- 239000004065 semiconductor Substances 0.000 claims description 12
- 239000003566 sealing material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 239000011256 inorganic filler Substances 0.000 claims description 6
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 abstract description 25
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 239000013585 weight reducing agent Substances 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 16
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 14
- 239000007864 aqueous solution Substances 0.000 description 14
- 239000004816 latex Substances 0.000 description 14
- 229920000126 latex Polymers 0.000 description 14
- 229920006027 ternary co-polymer Polymers 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000004073 vulcanization Methods 0.000 description 9
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 8
- YOALFLHFSFEMLP-UHFFFAOYSA-N azane;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoic acid Chemical compound [NH4+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YOALFLHFSFEMLP-UHFFFAOYSA-N 0.000 description 8
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 8
- 235000019796 monopotassium phosphate Nutrition 0.000 description 8
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 8
- 235000010265 sodium sulphite Nutrition 0.000 description 8
- 239000012153 distilled water Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 229910001629 magnesium chloride Inorganic materials 0.000 description 7
- 239000011259 mixed solution Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229920001897 terpolymer Polymers 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- 238000000862 absorption spectrum Methods 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 125000004093 cyano group Chemical group *C#N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- YPNVMKOFVMQQHI-UHFFFAOYSA-N 2-(3-ethenoxypropoxy)propanenitrile Chemical compound N#CC(C)OCCCOC=C YPNVMKOFVMQQHI-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- SFZULDYEOVSIKM-UHFFFAOYSA-N chembl321317 Chemical compound C1=CC(C(=N)NO)=CC=C1C1=CC=C(C=2C=CC(=CC=2)C(=N)NO)O1 SFZULDYEOVSIKM-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
- 229920006169 Perfluoroelastomer Polymers 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 1
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- SUTQSIHGGHVXFK-UHFFFAOYSA-N 1,2,2-trifluoroethenylbenzene Chemical compound FC(F)=C(F)C1=CC=CC=C1 SUTQSIHGGHVXFK-UHFFFAOYSA-N 0.000 description 1
- SKYXLDSRLNRAPS-UHFFFAOYSA-N 1,2,4-trifluoro-5-methoxybenzene Chemical compound COC1=CC(F)=C(F)C=C1F SKYXLDSRLNRAPS-UHFFFAOYSA-N 0.000 description 1
- GXZPMXGRNUXGHN-UHFFFAOYSA-N 1-ethenoxy-2-methoxyethane Chemical compound COCCOC=C GXZPMXGRNUXGHN-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- SELPMKPKZDLZTE-UHFFFAOYSA-N 6-ethenoxyhexanenitrile Chemical compound C=COCCCCCC#N SELPMKPKZDLZTE-UHFFFAOYSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- FTQWRYSLUYAIRQ-UHFFFAOYSA-N n-[(octadecanoylamino)methyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCNC(=O)CCCCCCCCCCCCCCCCC FTQWRYSLUYAIRQ-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1009—Fluorinated polymers, e.g. PTFE
-
- 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
- C08F214/26—Tetrafluoroethene
-
- 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
- C08F214/26—Tetrafluoroethene
- C08F214/262—Tetrafluoroethene with fluorinated vinyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
Definitions
- the present invention relates to a fluorine-containing elastomer. More specifically, it relates to a fluorine-containing elastomer used for plasma irradiation applications and the like.
- the seal for semiconductor manufacturing equipment is applied as a surface seal used in a processing chamber for processing such as etching or forming a thin film on the surface of a silicon wafer or the like which is a semiconductor substrate, and is heat resistant. And low gas permeability (low generation of dust from the seal) and the like are required.
- silicon wafer etching processing since plasma irradiation is performed in oxygen or CF 4 atmosphere, etc., gas such as oxygen or halogen is excited, and as a result, the seal for semiconductor manufacturing equipment is easily deteriorated, The surface becomes brittle, and a defect such as deterioration material or embrittlement scatters and adheres on a silicon wafer.
- a cyano group-containing perfluoroelastomer or the like which is excellent in heat resistance to the use request at a high temperature such as 300 ° C. is used.
- inorganic fillers such as silica, barium sulfate, alumina, aluminum silicate and the like has been carried out in order to improve plasma resistance, and the addition of these inorganic fillers causes weight reduction under plasma irradiation environment.
- the presence of the element itself such as titanium, barium, or aluminum may be disfavored in the semiconductor industry, and it is preferable to use a material which does not use only silica or no inorganic filler.
- fluorine-containing elastomer 53 to 79.8 mol%, preferably 64.4 to 72.6 mol%, more preferably 69.3 mol% of (A) tetrafluoroethylene, and 20 to 45 mol% of (B) perfluoro (methyl vinyl ether) is preferable.
- the fluorine-containing elastomer described in Patent Document 2 has a cyano group that crosslinks with a bisamidoxime compound as a vulcanizing agent, and the fluorine-containing elastomer composition having the vulcanizing agent blended therein is a roll. It is believed that there is no problem in processability such as kneadability, and that a vulcanized molded article satisfactory in heat resistance and solvent resistance can be obtained, and compression at conditions of 275 ° C. or 300 ° C. for 70 hours. Although the permanent strain value is measured, in view of the compression set value at 300 ° C., it can not be said that it has sufficient heat resistance to withstand use at a high temperature such as 300 ° C. used in a semiconductor manufacturing apparatus.
- An object of the present invention is to provide a fluorine-containing elastomer having a cyano group as a crosslinkable group, wherein this vulcanizate is used under plasma irradiation conditions and also when used under high temperature conditions such as 300 ° C. It is an object of the present invention to provide a fluorine-containing elastomer which suppresses weight loss due to irradiation and exhibits excellent heat resistance even under high temperature conditions of 300 ° C. or higher.
- Such objects of the present invention are: (A) 72.8 to 74.0 mol% of tetrafluoroethylene, (B) perfluoro (lower alkyl vinyl ether) or 26.8 to 24.0 mol% of perfluoro (lower alkoxy lower alkyl vinyl ether) and (C) perfluoro
- a fluorine-containing elastomer having a copolymer composition consisting of 0.2 to 3.0 mol% of an unsaturated nitrile compound.
- a fluorine-containing elastomer is compounded with 0.2 to 5 parts by weight of a bisamidoxime compound per 100 parts by weight as a vulcanizing agent to form a fluorine-containing elastomer composition.
- the fluorine-containing elastomer according to the present invention can form an effective sealing material for a semiconductor manufacturing apparatus by vulcanizing and forming a bis (amidoxime) compound as a vulcanizing agent.
- the obtained sealing material exhibits excellent heat resistance even when it does not contain an inorganic filler such as carbon black or silica, and is indicated by the compression set at 300 ° C. or higher, specifically 300 ° C. and 315 ° C. Show good high temperature heat resistance. For this reason, a sealing material such as an O-ring can maintain good sealability even under high temperature conditions of 300 ° C. or higher.
- the fluorine-containing elastomer according to the present invention comprises (A) 72.8 to 74.0 mol% of tetrafluoroethylene, (B) perfluoro (lower alkyl vinyl ether) or 26.8 to 24.0 mol% of perfluoro (lower alkoxy lower alkyl vinyl ether) and (C) It has a copolymer composition consisting of 0.2 to 3.0 mol% of a perfluoro unsaturated nitrile compound, and its Mooney viscosity ML 1 + 10 (121 ° C.) is 70 to 115.
- copolymerization ratio is included in the general description of the copolymerization ratio in the above-mentioned Patent Documents 1 to 3, it is set to a preferable copolymerization ratio range and a range which is not described in the more preferable copolymerization ratio. .
- the copolymerization ratio of tetrafluoroethylene of the component (A) is set to 72.8 to 74.0 mol%, which is close to the upper limit value of Patent Documents 1 to 3 above, and is particularly set higher than the upper limit value of the preferable range of Patent Document 1 If the copolymerization ratio is lower than this range, the heat resistance is inferior and adhesion to silicon, metal, silica glass, etc. becomes strong, while at a copolymerization ratio higher than this range, resin rather than elastomer is used. And the sealing performance is deteriorated and the processability is deteriorated.
- the copolymerization ratio of perfluoro (lower alkyl vinyl ether) or perfluoro (lower alkoxy lower alkyl vinyl ether) of the component (B) is 26.8 to 24.0 mol% and 27 to 35 mol which is a preferable range of the patent document 1 %, Lower than 30 mol% which is a further preferable copolymerization ratio of the same document, and further lower than 30 mol% which is a copolymerization ratio used in the examples of Patent Documents 2 and 3 There is. If this copolymerization ratio is lower than this, the copolymerization ratio of tetrafluoroethylene may increase relatively, and as indicated by the compression set at 300 ° C. and 315 ° C., the copolymer is a resin. And the seal performance is significantly reduced. On the other hand, if the copolymerization ratio is higher than this, particularly the tackiness will be significantly deteriorated.
- perfluoro (lower alkyl vinyl ether) of the component (B) component generally, perfluoro (methyl vinyl ether), perfluoro (ethyl vinyl ether), perfluoro (propyl vinyl ether) and the like are used. Also, as perfluoro (lower alkoxy lower alkyl vinyl ether), for example, the following may be used, Among these, those in which the C n F 2n + 1 group is a CF 3 group are particularly preferably used.
- the copolymerization amount of the perfluoro unsaturated nitrile compound of the component (C) is 0.2 to 3.0 mol%, preferably 0.5 to 2.0 mol%, which is necessary as a crosslinkable group.
- the copolymerization reaction using each of these monomers is generally carried out by charging water, a fluorine-containing emulsifier such as ammonium perfluorooctanoate and a buffer such as potassium dihydrogen phosphate in a stainless steel autoclave, After feeding fluoroethylene, perfluoro (lower alkyl vinyl ether) or perfluoro (lower alkoxy lower alkyl vinyl ether) and perfluoro unsaturated nitrile compound sequentially and raising the temperature to about 50-80 ° C., a radical generator such as ammonium persulfate And a reducing agent such as sodium sulfite.
- the reaction pressure is preferably maintained at about 0.75 to 0.85 MPa, and the reaction is carried out while adding these three types of monomer mixtures in order to raise the pressure in the reaction vessel which decreases as the reaction proceeds. It is preferred to do.
- fluorinated olefins examples include vinylidene fluoride, monofluoroethylene, trifluoroethylene, trifluoropropylene, pentafluoropropylene, hexafluoropropylene, hexafluoroisobutylene, chlorotrifluoroethylene, dichlorodifluoroethylene and the like, and vinyl
- the compound include ethylene, propylene, 1-butene, isobutylene, methyl vinyl ether, ethyl vinyl ether, butyl vinyl ether, cyclohexyl vinyl ether, vinyl acetate, vinyl propionate, vinyl chloride, vinylidene chloride, trifluorostyrene and the like.
- the bis (amidoxime) compounds represented by the following are added as a vulcanizing agent in a proportion of 0.2 to 5 parts by weight, preferably 0.5 to 2 parts by weight, per 100 parts by weight of the fluorine-containing elastomer.
- Preparation of a fluorine-containing elastomer composition containing a bisamidoxime compound as a vulcanizing agent is carried out by kneading at about 30 to 60 ° C. using a two-roll mill or the like, and its crosslinking is carried out at about 100 to 250 ° C. It is carried out by heating for about 1 to 120 minutes.
- secondary vulcanization it is carried out at about 150 to 280 ° C. in an inert gas atmosphere such as a nitrogen gas atmosphere, and oven vulcanization is carried out at stepwise temperature elevation as described in the following examples. Is preferred.
- Example 1 55 kg of distilled water, 1800 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate were charged into water in a 100 L stainless steel autoclave, and then the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction solution was sequentially charged and heated to 60.degree. C., and then added as a 5 L aqueous solution in which 70 g of ammonium persulfate and 12 g of sodium sulfite were dissolved, to start a polymerization reaction.
- TFE was added at 1.4 kg / hr, FMVE at 1.0 kg / hr, and CEPVE at a addition rate of 52 g / hr, respectively, while the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 76 kg of an aqueous latex having a solid concentration of 26% by weight.
- aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.6 kg (yield 89%) of united A was obtained.
- the rubbery terpolymer had a Mooney viscosity ML 1 + 10 (121 ° C.) of 88 and was confirmed to have the following composition from infrared absorption spectrum and NMR analysis. TFE 73.5 mol% FMVE 24.9 mol% CEPVE 1.6 mol%
- Example 2 After charging 51 kg of distilled water, 900 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate to water in a 100 L stainless steel autoclave, the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction mixture was sequentially charged, and the temperature was raised to 60.degree. C. Then, 70 g of ammonium persulfate and 12 g of sodium sulfite were added as a 5 L aqueous solution to start the polymerization reaction.
- TFE was added at 1.4 kg / hr, FMVE at 0.9 kg / hr, and CPeVE at 40 g / hr, respectively, and the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 74 kg of an aqueous latex having a solid concentration of 27% by weight.
- the obtained aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.0 kg (yield 89%) of united B were obtained.
- This rubbery terpolymer had a Mooney viscosity ML 1 + 10 (121 ° C.) of 89 and was confirmed to have the following composition from infrared absorption spectrum and NMR analysis. TFE 73.9 mol% FMVE 24.8 mol% CPeVE 1.3 mol%
- Example 3 55 kg of distilled water, 1800 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate were charged into water in a 100 L stainless steel autoclave, and then the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction solution was sequentially charged and heated to 60.degree. C., and then added as a 5 L aqueous solution in which 70 g of ammonium persulfate and 12 g of sodium sulfite were dissolved, to start a polymerization reaction.
- TFE was added at 1.3 kg / hr, FMVE at 1.1 kg / hr, and CEPVE at 30 g / hr, respectively, and the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 76 kg of an aqueous latex having a solid concentration of 26% by weight.
- aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.5 g (yield 89%) of united C was obtained.
- the rubbery terpolymer had a Mooney viscosity ML 1 + 10 (121 ° C.) of 84, and was confirmed to have the following composition from infrared absorption spectrum and NMR analysis. TFE 73.2 mol% FMVE 25.8 mol% CEPVE 1.0 mol%
- Example 4 55 kg of distilled water, 1800 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate were charged into water in a 100 L stainless steel autoclave, and then the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction solution was sequentially charged and heated to 60.degree. C., and then added as a 5 L aqueous solution in which 70 g of ammonium persulfate and 12 g of sodium sulfite were dissolved, to start a polymerization reaction.
- TFE was added at 1.3 kg / hr, FMVE at 1.1 kg / hr, and CEPVE at a addition rate of 52 g / hr, respectively, while the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 76 kg of an aqueous latex having a solid concentration of 26% by weight.
- the obtained aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.4 kg (yield 89%) of united D were obtained.
- the rubbery terpolymer had a Mooney viscosity ML 1 + 10 (121 ° C.) of 88 and was confirmed to have the following composition from infrared absorption spectrum and NMR analysis. TFE 73.3 mol% FMVE 25.1 mol% CEPVE 1.6 mol%
- Example 6 In Example 5, in place of the copolymer A, tetrafluoroethylene-perfluoro (methyl vinyl ether) -perfluoro (3-oxa-8-cyano-1-octene) [molar ratio 73.9: 24.8: 1.3] ternary compound Copolymer [copolymer B] was used.
- Example 7 In Example 5, instead of the copolymer A, tetrafluoroethylene-perfluoro (ethyl vinyl ether) -perfluoro (3,7-dioxa-8-cyano-1-nonene) [molar ratio 73.2: 25.8: 1.0].
- a ternary copolymer [copolymer C; Mooney viscosity ML 1 + 10 (121 ° C.) 84] was used.
- Example 8 In Example 5, in place of the copolymer A, tetrafluoroethylene-perfluoro (methoxyethyl vinyl ether) -perfluoro (3,7-dioxa-8-cyano-1-nonene) [molar ratio 73.3: 25.1: 1.6 A ternary copolymer [copolymer D; Mooney viscosity ML 1 + 10 (121 ° C.) 88] was used.
- Copolymer E was synthesized as follows.
- reaction solution 55 kg of distilled water, 1800 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate were charged into water in a 100 L stainless steel autoclave, and then the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction solution was sequentially charged and heated to 60.degree. C., and then added as a 5 L aqueous solution in which 70 g of ammonium persulfate and 12 g of sodium sulfite were dissolved, to start a polymerization reaction.
- TFE was added at 1.0 kg / hr, FMVE at 1.4 kg / hr, and CEPVE at a addition rate of 52 g / hr, respectively, while the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 76 kg of an aqueous latex having a solid concentration of 26% by weight.
- the obtained aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.2 kg (yield 87%) of united E were obtained.
- reaction solution 55 kg of distilled water, 1800 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate were charged into water in a 100 L stainless steel autoclave, and then the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction solution was sequentially charged and heated to 60.degree. C., and then added as a 5 L aqueous solution in which 70 g of ammonium persulfate and 12 g of sodium sulfite were dissolved, to start a polymerization reaction.
- TFE was added at 1.6 kg / hr, FMVE at 0.7 kg / hr, and CEPVE at a addition rate of 40 g / hr, while the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 76 kg of an aqueous latex having a solid concentration of 26% by weight.
- the obtained aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.5 kg (yield 93%) of united F was obtained.
- reaction solution 55 kg of distilled water, 1800 g of ammonium perfluorooctanoate and 782 g of potassium dihydrogen phosphate were charged into water in a 100 L stainless steel autoclave, and then the inside of the autoclave was purged with nitrogen and then depressurized. there, The reaction solution was sequentially charged and heated to 60.degree. C., and then added as a 5 L aqueous solution in which 70 g of ammonium persulfate and 12 g of sodium sulfite were dissolved, to start a polymerization reaction.
- TFE was added at 1.1 kg / hr, FMVE at 1.3 kg / hr, and CEPVE at 40 g / hr, respectively, and the pressure of the autoclave was maintained at 0.78 to 0.83 MPa.
- the addition was stopped 7 hours after the start of the polymerization reaction, and the condition was maintained for another 1 hour.
- the autoclave was cooled and the residual gas was purged to obtain 76 kg of an aqueous latex having a solid concentration of 26% by weight.
- the obtained aqueous latex is coagulated by adding it to a mixed solution of 80 L of a 5 wt% aqueous solution of magnesium chloride and 80 L of ethanol, followed by washing with water and drying at 80 ° C. for 70 hours to obtain a white rubbery ternary copolymer. 17.4 kg (yield 88%) of united G were obtained.
- the sealing material obtained by vulcanizing and forming a composition obtained by blending a bisamidoxime compound with the fluorine-containing elastomer according to the present invention is used for plasma irradiation applications, for example, for semiconductor manufacturing equipment.
- it is also used as an O-ring or packing for maintaining vacuum, which is applied to the surface seal of the surface treatment processing chamber of silicon wafer, for example, the connecting surface between chamber and chamber or the bonding surface between chamber and gate (door). , Is used effectively.
Abstract
Description
CF2=CF〔OCF2CF(CF3)〕xO(CF2)nCN
n:1~4
x:1~2
で表わされるパーフルオロ不飽和ニトリル化合物0.2~2モル%、好ましくは0.4~1.0モル%、さらに好ましくは0.7モル%の共重合組成を有するものが知られており、この含フッ素エラストマーはビスアミノフェノールまたは芳香族テトラミンによって硬化されるとされている。
HON=C(NH2)-(CF2)n-C(NH2)=NOH
n:1~10
で表わされるビスアミドキシム化合物を加硫剤として加硫されることが、本出願人によって提案されている。この場合に用いられる含フッ素エラストマーとしては、(A)テトラフルオロエチレン45~75モル%、(B)パーフルオロ(低級アルキルビニルエーテル)またはパーフルオロ(低級アルコキシ低級アルキルビニルエーテル)54.8~20モル%および(C)パーフルオロ不飽和ニトリル化合物0.2~5モル%よりなる共重合組成を有するものが用いられており、各実施例では(A):(B):(C)モル比がそれぞれ63.5:34.9:1.6または68.8:30.0:1.2の共重合組成を有するものが含フッ素エラストマーとして用いられている。
これらの中で、特にCnF2n+1基がCF3基であるものが好んで用いられる。
HON=C(NH2)-(CF2)n-C(NH2)=NOH
n:1~10
で表わされるビスアミドキシム化合物が加硫剤として、含フッ素エラストマー100重量部当り0.2~5重量部、好ましくは0.5~2重量部の割合で添加して用いられる。
内容積100Lのステンレス鋼製オートクレーブ中に水に、蒸留水55kg、パーフルオロオクタン酸アンモニウム1800gおよびリン酸二水素カリウム782gを仕込んだ後、オートクレーブ内を窒素で置換し、次いで減圧した。そこに、
を順次仕込み、60℃に昇温させた後、そこに過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを溶解させた5Lの水溶液として添加し、重合反応を開始させた。
TFE 73.5モル%
FMVE 24.9モル%
CEPVE 1.6モル%
内容積100Lのステンレス鋼製オートクレーブ中に水に、蒸留水51kg、パーフルオロオクタン酸アンモニウム900gおよびリン酸二水素カリウム782gを仕込んだ後、オートクレーブ内を窒素で置換し、次いで減圧した。そこに、
を順次仕込み、60℃に昇温させた後、過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを5Lの水溶液として添加し、重合反応を開始させた。
TFE 73.9モル%
FMVE 24.8モル%
CPeVE 1.3モル%
内容積100Lのステンレス鋼製オートクレーブ中に水に、蒸留水55kg、パーフルオロオクタン酸アンモニウム1800gおよびリン酸二水素カリウム782gを仕込んだ後、オートクレーブ内を窒素で置換し、次いで減圧した。そこに、
を順次仕込み、60℃に昇温させた後、そこに過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを溶解させた5Lの水溶液として添加し、重合反応を開始させた。
TFE 73.2モル%
FMVE 25.8モル%
CEPVE 1.0モル%
内容積100Lのステンレス鋼製オートクレーブ中に水に、蒸留水55kg、パーフルオロオクタン酸アンモニウム1800gおよびリン酸二水素カリウム782gを仕込んだ後、オートクレーブ内を窒素で置換し、次いで減圧した。そこに、
を順次仕込み、60℃に昇温させた後、そこに過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを溶解させた5Lの水溶液として添加し、重合反応を開始させた。
TFE 73.3モル%
FMVE 25.1モル%
CEPVE 1.6モル%
テトラフルオロエチレン-パーフルオロ(メチルビニルエーテル)-パーフルオロ(3,7-ジオキサ-8-シアノ-1-ノネン)〔モル比73.5:24.9:1.6〕3元共重合体〔共重合体A〕100重量部に、ビスアミドキシム化合物(n=4)0.7重量部を加え、2本ロールミル上で40~45℃の温度で混練した。混練物を180℃で30分間プレス加硫(一次加硫)した後、次の条件下でのオーブン加硫(二次加硫)を窒素ガス雰囲気下で行った。
90℃で4時間
90℃から204℃迄6時間かけて昇温
204℃で18時間
204℃から288℃迄6時間かけて昇温
288℃で18時間
実施例5において、共重合体Aの代わりに、テトラフルオロエチレン-パーフルオロ(メチルビニルエーテル)-パーフルオロ(3-オキサ-8-シアノ-1-オクテン) [モル比 73.9:24.8:1.3]3元共重合体〔共重合体B〕が用いられた。
実施例5において、共重合体Aの代わりに、テトラフルオロエチレン-パーフルオロ(エチルビニルエーテル)-パーフルオロ(3,7-ジオキサ-8-シアノ-1-ノネン) [モル比 73.2:25.8:1.0]3元共重合体〔共重合体C;ムーニー粘度ML1+10(121℃)84〕が用いられた。
実施例5において、共重合体Aの代わりに、テトラフルオロエチレン-パーフルオロ(メトキシエチルビニルエーテル)-パーフルオロ(3,7-ジオキサ-8-シアノ-1-ノネン) [モル比 73.3:25.1:1.6]3元共重合体〔共重合体D;ムーニー粘度ML1+10(121℃)88〕が用いられた。
常態物性:DIN53505(硬度)
DIN53503(引張試験)
圧縮永久歪:ASTM Method B;P-24 Oリングについて、300℃または315℃、70
時間の条件下で測定
プラズマ照射試験(重量減少率):アルバック社製RBH3030使用
O2プラズマ
RF出力 1500W
照射時間 6時間
真空度0.1 Torr
粘着性試験:P24 Oリングを2枚の5cm角ステンレス板(SUS板)、アルミニウム板、
シリカガラス板またはシリコン板で挟み込み、15%圧縮した状態で
80℃で15時間加熱した後、30分間室温条件下に冷却したものについ
て、これら2枚の板を速さ100mm/分の速度で引っ張ったときの最大荷
重を測定
実施例1において、共重合体Aの代りに、共重合単量体モル比TFE:FMVE:CEPVE=68.5:29.9:1.6の3元共重合体〔共重合体E;ムーニー粘度ML1+10(121℃)82〕が用いられ、同様の加硫および測定が行われた。なお、共重合体Eは、次のとおりに合成された。
を順次仕込み、60℃に昇温させた後、そこに過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを溶解させた5Lの水溶液として添加し、重合反応を開始させた。
実施例1において、共重合体Aの代りに、共重合単量体モル比TFE:FMVE:CEPVE=77.5:21.1:1.4の3元共重合体〔共重合体F;ムーニー粘度ML1+10(121℃)91〕が用いられ、同様の加硫および測定が行われた。なお、共重合体Fは、次のとおり合成された。
を順次仕込み、60℃に昇温させた後、そこに過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを溶解させた5Lの水溶液として添加し、重合反応を開始させた。
実施例2において、共重合体Aの代りに、共重合単量体モル比TFE:FMVE:CEPVE=69.9:28.8:1.3の3元共重合体〔共重合体G;ムーニー粘度ML1+10(121℃)85〕が用いられ、同様の加硫および測定が行われた。なお、共重合体Gは、次のとおり合成された。
を順次仕込み、60℃に昇温させた後、そこに過硫酸アンモニウム70gおよび亜硫酸ナトリウム12gを溶解させた5Lの水溶液として添加し、重合反応を開始させた。
Claims (9)
- (A)テトラフルオロエチレン72.8~74.0モル%、(B)パーフルオロ(低級アルキルビニルエーテル)またはパーフルオロ(低級アルコキシ低級アルキルビニルエーテル)26.8~24.0モル%および(C)パーフルオロ不飽和ニトリル化合物0.2~3.0モル%よりなる共重合組成を有する含フッ素エラストマー。
- ムーニー粘度ML1+10(121℃)が70~115である請求項1記載の含フッ素エラストマー。
- 請求項1記載の含フッ素エラストマー100重量部当り0.2~5重量部のビスアミドキシム化合物を配合してなる含フッ素エラストマー組成物。
- 請求項3記載の含フッ素エラストマー組成物を加硫成形して得られたシール材。
- プラズマ照射用途に用いられる請求項4記載のシール材。
- 半導体製造装置用として用いられる請求項5記載のシール材。
- シリコンウェハーの表面処理加工室の面シールとして用いられる請求項6記載のシール材。
- 無機充填剤を含有していない請求項5、6または7記載のシール材。
- ゲートバルブ用途に用いられる請求項5記載のシール材。
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US12/812,060 US8188176B2 (en) | 2008-01-08 | 2008-11-13 | Fluorine-containing elastomer |
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US8188176B2 (en) | 2012-05-29 |
EP2230263A4 (en) | 2015-06-17 |
CN101910221B (zh) | 2012-07-04 |
JP5292815B2 (ja) | 2013-09-18 |
CN101910221A (zh) | 2010-12-08 |
EP2230263A1 (en) | 2010-09-22 |
JP2009161662A (ja) | 2009-07-23 |
US20100286341A1 (en) | 2010-11-11 |
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