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WO2000017057A1 - Contenant moule par soufflage - Google Patents

Contenant moule par soufflage Download PDF

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Publication number
WO2000017057A1
WO2000017057A1 PCT/JP1999/005130 JP9905130W WO0017057A1 WO 2000017057 A1 WO2000017057 A1 WO 2000017057A1 JP 9905130 W JP9905130 W JP 9905130W WO 0017057 A1 WO0017057 A1 WO 0017057A1
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WO
WIPO (PCT)
Prior art keywords
container
fluorine
melt
less
molding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1999/005130
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English (en)
Japanese (ja)
Inventor
Takahiro Kitahara
Kazuo Ishiwari
Tatsuya Higuchi
Satoshi Inamoto
Takayuki Hirao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of WO2000017057A1 publication Critical patent/WO2000017057A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
    • B29C49/0006—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material for heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/04102—Extrusion blow-moulding extruding the material continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/0411—Means for defining the wall or layer thickness
    • B29C49/04114—Means for defining the wall or layer thickness for keeping constant thickness

Definitions

  • the present invention is a blow molding container having a smooth inner surface suitable for storing and transporting a high-purity chemical solution, and a melt molding particularly suitable as a material for low-temperature blow molding of the container.
  • the present invention relates to a molding material comprising a low melting point fluorine-containing resin mainly composed of possible tetrafluoroethylene.
  • the performance required for such a chemical solution container is, for example, such as the following.
  • Material side (1) It has a wide chemical resistance to various chemicals such as strong acids, strong alkalines and surfactants, and has no deterioration over time.
  • Shape surface The inner surface of the container must be smooth and free of fine particles (for example, particles having a particle size of about 0.1 m).
  • fluororesin and polyethylene are currently used in terms of material, but in terms of chemical resistance, fluorine-containing resin is used. Some attention has been paid to the resin.
  • fluorine-containing resins include tetrafluoroethylene copolymer (alkyl vinyl ether) copolymer (PFA) and tetrafluoroethylene copolymer.
  • FEP Pyrene copolymer
  • Ethylene Z tetrafluoroethylene copolymer ETFE
  • Tetrafluoroethylene-Fluoro (vinyl vinyl acetate) (Tel) Z-hexafluoropropylene copolymers and other fluorine-containing resins that can be melt-molded have been studied and some have been put into practical use. From the manufacturing perspective, the rotating (rot molding) method, the welding sheet-lining method, and the blow molding method are used. However, in the case of the roto-molding method, the cycle time required for molding is long, and the powder adheres to the mold for a long time, so that metal components may be mixed.
  • the blow molding method is a series of continuous processes, the cycle time required for molding is short, and the materials, atmosphere, and blow of the molding machine and mold are small. With strict air management, pollution can be significantly reduced.
  • the surface smoothness is as good as that of an extruded sheet, making it the most suitable method for molding highly purified chemical liquid containers.
  • the blow molding method refers to a method in which a thermoplastic resin is melted and extruded from top to bottom, and the extruded parison is not cooled. And insert air into the mold. This is a molding method in which the mold is brought into close contact with the inner wall of the mold, cooled, solidified, and then taken out as a molded product.
  • Polyethylene containers can be blow-molded into large containers exceeding 200 liter capacity, but they are used in semiconductor lamination processes.
  • High-purity chemicals containing surfactants Inferior in chemical resistance, such as easy generation of cracks against nitric acid, hydrofluoric acid, and hydrofluoric acid The contamination resistance is also insufficient.
  • the fluorine-containing resin as a material for blow molding, as described above.
  • the density of the conventional fluorine-containing resin is large, unlike a general thermoplastic resin, and the density is high. Due to the severe nature of the chemicals, a chemical container that satisfies the above performance cannot be manufactured by a small container with a capacity of at most 15 liters or by the blow molding method.
  • Hastelloy Ni group /
  • Special molding machines using such materials as C ⁇ / Mo alloy) and Halloy (Ni-based ZCo alloy, Cr or Ni-plated steel plate) are required. This is because when a fluororesin is melt-molded, corrosive gas (hydrofluoric acid) is generated by decomposition because the molding temperature and decomposition temperature are close to each other, and This is because general-purpose molding machines that use ordinary metallic materials, such as rest steel, cannot be used due to corrosion.
  • An object of the present invention is to provide a novel blow molding material made of a low-melting fluorine-containing resin capable of manufacturing a large container.
  • the present invention also provides a low-melting-point fluorocarbon resin that does not corrode ordinary metal materials during melt molding, and thus can be molded into a single piece using a general-purpose plastic molding machine.
  • An object of the present invention is to provide a molding material, and a container obtained by blow molding using the molding material. Disclosure of the invention
  • the present invention comprises a melt-moldable fluororesin having a melting point of 230 ° C or lower, and (A) melt flow at 230 ° C. Over preparative is 0. Ri Ah at l ⁇ 2 0 g, 1 0 minutes, (B) 1 9 0 ⁇ 2 6 0. Menu Le to manual down in good or to rather is 2 0 0 ⁇ 2 4 0 D C The cation is 2 to 50 gf, and (C) 190 to 260: preferably, the fluorine ion at 200 to 24 Ot: Relating to blow molding materials having a concentration of 10 ppm or less.
  • the present invention also provides a container suitable for storing and transporting a high-purity chemical obtained by low-temperature blow molding using a molding material comprising such a fluorine-containing resin, particularly A container having an inner surface having a surface roughness Ra (central average roughness) of 0.07 / m or less, preferably 0.05 / zm or less, and more preferably For large containers with a capacity of more than 20 liters.
  • the fluorine-containing resin is preferably a fluorine-containing copolymer containing 30 to 90 mol% of tetrafluoroethylene (TFE) units.
  • TFE tetrafluoroethylene
  • the blow molded container of the present invention has a multi-layered structure in which a layer obtained by blow molding a molding material made of such a fluorine-containing resin is the innermost layer. It can be a sealed container.
  • the present invention further relates to a container having an inner capacity of 20 liters or more, which is manufactured by molding using a molding material comprising the above-mentioned fluororesin. Therefore, the minimum thickness of the container is 0.1 mm or more, and the surface roughness Ra (centerline average roughness) of the inner surface of the container is 0.07; ⁇ m or less.
  • the present invention relates to a blow molded container suitable as a container for a high-purity chemical solution.
  • Such a preformed container preferably has a difference in wall thickness of the container wall of not more than 60%.
  • the container can also produce a large container having a height ratio to the maximum outer diameter of 1 or more.
  • the present invention also relates to the container containing the high-purity chemical, and a method of using the container for storing and transporting the high-purity chemical.
  • the molding material of the present invention includes the above-mentioned specific melt-in-one-rate (A), melt-tension (B), It has a specific defluoridated ion concentration (C).
  • the melting point of the present invention is 230, and the following fluorine-containing resins have a tetrafluoro port:!: Styrene (TFE) as low as 30 to 90 mol%.
  • TeFE Styrene
  • Fluorine-containing copolymers comprising at least 70 to 10 mol% of at least one other monomer are preferred.
  • Such fluorine-containing copolymers include, for example, but are not limited to, but are not limited to, those of the type described above.
  • a copolymer in which another monomer contains at least one ⁇ -age refin (1) A copolymer in which another monomer contains at least one ⁇ -age refin.
  • ⁇ -olefins include, for example, ethylene, propylene, 1-butene, etc., and in terms of strength, ethylene. Is preferred.
  • ethylene from the point of view of the improvement of the cracking property, it is necessary to include at least one vinyl compound having 2 to 12 carbon atoms other than TFE and ethylene, and a ternary or higher. It is preferable to use a copolymer of
  • vinyl compounds examples include perfluoroolefins such as hexafluoropropene (HFP), vinylidene fluoride (vinylidene fluoride), and the like.
  • CFE black mouth trifluoroethylene
  • CH 2 CF (CF 2 ) n H (n is an integer from 2 to 10)
  • Etc. are required.
  • TFE ethylenno HFP copolymer is preferred from the viewpoint of reactivity, thermal stability and chemical resistance.
  • the copolymer composition (molar% ratio) of the TFEZ ethylene HFP copolymer is 30 to 70/20 to 6555 to 30, preferably 30 to 602. 5-6 0 Roh 1 0-2 5, good or was rather, especially in Ru Oh in 3 5-6 0 / / 2 5 to 5 0 1 0 to 2 0.
  • the copolymer resin with perfluoro (alkyl vinyl ether) is usually called PFA and has a high melting point (28%). 0 to 315 X:), but in the present invention, those having a melting point of 230 or less are used.
  • the melting point of a TFE / PMVE copolymer having a perfluoro (methyl vinyl ether) (PMVE) content of 12.7 mol% is about 221.
  • VdF vinylidene fluoride
  • HFP cross-port trifluorene
  • TFEZV d FZHFP ⁇ S 0 to 60 no 30 to 60 Z 5 to 15 (mole% ratio) or TFEZV d F / CTFE 30 to 60/30 to 30 6 0 5 to 1 5
  • the fluorine-containing copolymer containing 14 to 20 mol% of HFP is preferable in terms of lowering the melting temperature.
  • the TFE / ethylene ZHFP-based copolymers are most preferred in terms of heat resistance, container strength, thermal stability, and chemical resistance.
  • a fluorine-based solvent is used, and an aqueous medium using an organic peroxide as a polymerization initiator is used.
  • the suspension polymerization in the reaction is preferred, but it can be produced by other polymerization methods such as bulk, solution, suspension, emulsification, and gas phase polymerization.
  • fluorine-based solvent there may be mentioned, for example, CH 3 CC 1 F 2 , CH 3 CC 1 2 FCF 3 CF 2 CC 1 2 H, CF 2 C 1 CF 2 CFHC 1), perfluoroalkanes (for example, no. 1 fluorocyclobutane, CF 3 CF 2 CF 2 CF 3 , CF 3 CF 2 CF 2 CF 2 CF 3 , CF 3 CF 2 CF 2 CF 2 CF 2 CF 3) can be used. Fluoroalkanes are preferred.
  • the amount of the solvent to be used is preferably 10 to 100% by weight with respect to water from the viewpoint of suspendability and economy.
  • organic peroxide which is a polymerization initiator examples include diisopropyl peroxyside, diisopropyl peroxy dicarbonate, and di-n-propyl peroxy. High-carbon organic peroxides such as sigma-carbonate are removed. In addition, the formula:
  • X is a hydrogen atom, a fluorine atom or a chlorine atom, and p is an integer of 2 to 8).
  • organic peroxide (1) examples include zipper fluoropropionyl peroxide, di ( ⁇ -hydrofluorofluorohexanol), Oxyside, di ( ⁇ -black mouth perfloor hexanoyl) peroxyde, etc.
  • the polymerization temperature is not particularly limited, but may be 0 to 100 ° C. industrially.
  • the polymerization pressure may be generally 0 to 50 kgf Zcm 2 G, and a relatively low pressure of 1 to 20 kgf Zcm 2 G is desired for the polymerization operation, and a relatively low pressure. Power is also good for safety.
  • the polymerization pressure is appropriately determined according to other polymerization conditions such as the type and amount of the solvent to be used, the vapor pressure, and the polymerization temperature.
  • a conventional chain transfer agent for example, isopentane, n-pentane, or n- is used to adjust the molecular weight. It is possible to use xanthane, cyclohexane, methanol, ethanol, carbon tetrachloride, mouth mouth foam, methylene chloride, methyl chloride, etc. it can .
  • the melt flow rate (A) at 230 ° C is 10 to 100 g / 100 minutes, and the melt flow rate is 190 to 260 minutes.
  • the TFE copolymer having a tension (B) of less than 5 gf has a melt flow rate (A) of 0.001 to 3.0 OgZlO in 230.
  • the blend may be mixed and kneaded in the form of pellets, powder, or dispersion.
  • terminal groups such as CH 3 remain, and these unstable terminal groups are thermally decomposed during melt molding to become one COF, and this —COF comes into contact with the chemical solution. When dissolved, it dissolves as a fluorine ion. Therefore, as a molding material for a chemical solution container, It is desirable to use those that have stabilized unstable terminal groups.
  • a conventionally known method can be used. For example, treatment with fluorine gas (F 2) or ammonia gas to remove the end groups —CF 3 or —CON
  • the container is formed by the blow molding method, the gas containing fluorine gas is used as the gas to be blown, and the container is formed by using a gas containing fluorine gas.
  • the unstable terminal groups in the TFE-based copolymer constituting the inner surface layer of the blow-molded container can be stabilized.
  • the blow molding material of the present invention has (A) a melt flow rate at 230 ° C. of 0.:! To 20 g / 10 min.
  • the melt tension at 190 to 260 ° C must be 2 gf or more. Fluorine-containing resins that deviate from these requirements can be used as molding materials for chemical liquid containers that require sufficient stress crack resistance and a smooth inner surface, especially for large chemical liquid containers. Can not be used. For example, if the melt flow rate is less than 0.1 g / 10 minutes, the melt fracture at the exit of the extruder die during blow molding. The surface of the molded product becomes rough and rough as a result. If the time exceeds 2 OgZ10 minutes, the sagging of the parison will increase during blow molding, and it will be extremely difficult to adjust the thickness of the molded product.
  • the melt flow rate (at 230) of the present invention is 0.:! ⁇ 20 g ZIO, preferably 0.3-10 g Z10, more preferably 0.3-5 g ZIO It is.
  • Preferred retentions (190 to 260, preferably between 200 and 240) are between 5 and 50 gf, and are more preferred. Or 10 to 50 gf.
  • the fluorine-containing resin molding material of the present invention preferably further has MwZMn of 2.0 or more.
  • M w ZM n is an index of the molecular weight distribution, and has properties such as moldability at the time of molding a single piece, sagging of a preform, and stress cracking of a molded article. It is a measure of the mechanical properties. When MwZMn is smaller than 2.0, the sagging of the preform tends to increase. Preferred MwMn is between 2.0 and 5.0.
  • the fluorine-containing resin used in the present invention has the above-mentioned melting (blowing) molding performance and the concentration of fluorine ion generated in the range of 200 to 260 is not less than 10%. It is less than ppm.
  • the fluorine-containing resin is melt-molded, it is exposed to the outside in the form of corrosive gas such as hydrofluoric gas due to thermal decomposition or the like. Since this hydrofluoric acid corrodes the metal materials (SUS, SACM-based alloys, SCM-based alloys) of general-purpose plastic molding machines, high-cost corrosion-resistant metal materials are used as described above. I had to use it. This point is also a factor that hinders the general use of fluorine-containing resins.
  • the fluoropolymer containing low melting point used in the present invention has a melting form temperature (190 to 260, preferably 200 to 240 ° C). Since the amount of fluorine ion generated is 10 ppm or less, preferably 5 ppm or less, the conventional general-purpose plastic molding machine can be used without using a corrosion-resistant metal material. It can be molded using Further, since the metal corrosion resistance is excellent, a container with little metal contamination and a small amount of metal leaching in a molded product at the time of molding can be obtained.
  • the fluorine-containing resin molding material of the present invention is particularly suitable as a material for blow molding, but is not limited to blow molding, but may be a roto-molding method or a welding method. In addition to the lining method, it is also useful as a molding material for extrusion molding, injection molding, transfer molding, and inflation film extrusion molding. .
  • the molding temperature is usually 190 to 260, preferably 200 to 2401 :.
  • the present invention also relates to a process for molding a fluororesin molding material having the above-mentioned specific melt flow rate and melt tension. Related to blow molded containers.
  • Plastic molding machines are available.
  • the protruding method used in the present invention may be any method, but the continuous extrusion method conventionally used in the manufacture of a polyethylene chemical solution container is used.
  • An extrusion or extrusion method using an accumulator head method is preferred.
  • the extrusion time of the preform is reduced by using an accumulator head, and the time required for extruding the preform is shortened.
  • Weight of preform An accumulator-head method that minimizes the amount is more preferable.
  • the smoothness of the inner surface of the shape surface is related to the molding technology, but the present invention has achieved that requirement by modifying the molding material. It is a thing.
  • the smoothness of the inner surface is necessary to reduce contamination (metal impurities, fine particles, etc.) in the container cleaning process before the high-purity chemical is filled. It is an important factor.
  • the difference in wall thickness (%) of the container wall may be 60% or less, preferably 40% or less, and more preferably 20% or less. it can .
  • the surface roughness Ra (centerline average roughness) is 0.0 or less, preferably 0.05 m or less, and more preferably 0.05 m or less.
  • a uniform container with a minimum wall thickness of 0.1 mm or less at 2 m or less, preferably 1 to 5 mm, and a wide range of 0.1 to 1000 liters Can be provided.
  • the blow-molded container of the present invention has a capacity of 20 liters or more, preferably 300 liters or more, preferably 50 liters or more, which could not be manufactured conventionally. Can be provided.
  • the container of the present invention can be used for storing and transporting various chemicals, particularly high-purity chemicals called semiconductor manufacturing grades.
  • Typical chemicals include, for example, sulfuric acid, hydrochloric acid, ammonia water, hydrogen peroxide solution, hydrofluoric acid, ammonium fluoride, zonal fluoride for semiconductor production.
  • surfactants such as fluorine-based anion surfactants and hydrocarbon-based anion surfactants can be used.
  • it is also useful as a container for storing and transporting pharmaceutical intermediates and blood.
  • the container of the present invention manufactured in this manner can be used as it is as various chemical liquid containers as it is, but is used, for example, as a chemical liquid container for semiconductor manufacturing. In some cases, it is used in a separate outer container, often referred to as a container.
  • the purpose of the container is to reinforce and transport the container inside, and it is known to be made of metal, FRP, Polyethylene, Polypropylene, etc. It is.
  • the container wall of the container is multi-layered into two or more layers, and the innermost layer is formed by a blow molding method using the above-mentioned fluorine-containing resin molding material. It can be a prepared container.
  • the material of the layers other than the innermost layer may be the same as or different from the material of the innermost layer.
  • the dissimilar materials include known fluororesins, FRP, and polyethylene which do not have the characteristics of the present invention.
  • FRP fluororesins
  • polyethylene which do not have the characteristics of the present invention.
  • pro-molding it is more economical if the upper and lower loss portions of the parison are re-ground and used as the outer layer material.
  • the multilayer structure has two layers if the innermost layer is the molding material of the present invention. Alternatively, a structure having three or more layers may be used. Further, as the molding material of the present invention constituting the innermost layer, it is preferable to use one obtained by stabilizing the above-mentioned unstable terminal group.
  • the shape of the multi-layer container is the same as that of the single-layer container. Regarding the dimensions, since the multi-layer structure improves the strength and durability of the whole container, the size can be further increased and the innermost layer can be made thinner.
  • the thickness of the container wall is about 0.1 to 10 mm in total, usually:! It is about 5 mm.
  • the thickness of the innermost TFE-based copolymer layer can be about 0.05 to 2 mm, preferably about 0.1 to 1 mm. The weight can also be reduced.
  • the characteristics adopted in the present invention were measured by the following methods.
  • the defluoridated ion concentration was calculated by the following equation. Fluorine ion measurement value X 20
  • the sample surface is obtained by a diamond pick-up with a stylus tip 2 // mR. 2.5 mm is automatically measured at a pick-up speed of 0.3 mm Z seconds.
  • the surface roughness Ra is the center line average roughness specified in JIS B0601-19802.
  • mm Maximum wall thickness
  • a blow molding device that pushes out a parison from the top of the mold and blows air or the like from the bottom of the mold.
  • the lower part of the parison is sandwiched by a mold to form the mouth of the container, and the upper part of the nose is used as the bottom of the container.
  • the part is the thinnest, and the upper part of the body of the container is the thickest. Therefore, the thickness difference is calculated by measuring the thickness of each of these parts. (Chemical resistance crack resistance)
  • test temperature is 60: The number of test samples n is 5, and the number of cracks on the samples 5 days later is visually examined.
  • the sample holder shall be made of Polytetrafluoroethylene, and the test container shall be made of TFE no-perfluoro (alkyl vinyl ether) copolymer (PFA).
  • test metal sample (3 cm square, 1 mm thick) and 100 g of the test resin sample in an aluminum container, and place nitrogen in an oven at the molding temperature. Visually inspect the surface condition of the metal sample after exposure to airflow for 100 hours.
  • a blow molding machine one-time operation for an accumulator
  • a container set the injection time at 30 to 30 seconds and set the container to 20 liters in capacity (maximum outer diameter 300 mm, height
  • the appearance of the obtained container was good, the surface roughness Ra of the inner surface was 0.02 ⁇ m, the minimum wall thickness was 2.3 mm, and the wall thickness difference was 19.3%. there were.
  • Example 2 Polymerization was performed in the same manner as in Example 1 except that the amount of hexane at the mouth was changed to 350 g to obtain a copolymer powder, which was then pelletized to produce a molding material for comparison. did .
  • the various physical properties of this product were as follows.
  • Molding material of the present invention obtained in Example 3 ⁇ 4.
  • Example 1 The molding material of the present invention obtained in Example 1 and the chemical resistance of 110 to £ used in Example 2 were examined in accordance with 13 K 7 11 14.
  • Each molding material was punched into a dumbbell-shaped sample of ASTMD 638 Type 5 (3.5 mm in width, 25.4 mm in length, and 1.0 mm in thickness). It was immersed in the same chemical solution as at room temperature (at 23). After soaking for one month, the sample was taken out, washed thoroughly with water, wiped with dry gauze, weighed immediately, and weighed after soaking. The weight change rate (%) was calculated by the following equation (average of 5 samples). Weight after immersion (g)-Weight before immersion (g)
  • Example 3 The test temperature in Example 3 was set at 60, and the chemicals were hydrofluoric acid (50%), nitric acid (60%), sulfuric acid (98%), and hydrogen peroxide (30%). The rate of change in weight (%) and the rate of residual elongation (%) after immersion were measured.
  • SACM 645 + Nitriding Nitriding of aluminum, chromium, and molybdenum steel materials of type 645.
  • SCM 440 Chromium-Mollibden steel material 440
  • the defluoridation ion concentration of the used PFII (at a melting measurement temperature of 370) was 49.2 ppm.
  • Example 1 The container having an internal volume of 20 liters obtained in Example 1 was sufficiently washed with hydrofluoric acid (50%, manufactured by Daikin Industries, Ltd.), and then the metal concentration of the container was reduced to 0.1 lppb. After filling 15 kg of the following 50% hydrofluoric acid and leaving it to stand at room temperature for 1 power month, 1 liter sampling was performed, and the dielectric coupled plasma mass spectrometry CP-MS) device (manufactured by Seiko Denshi Kogyo KK). The measured metals are Fe, Na, Ni, Cu, Cr, Zn,
  • Tamper made by CHEMICAL was replaced with 0.1 N nitric acid, and the concentration ratio was set to 100 times.
  • Table 5 shows the metal leaching concentration (ppb, detection limit of 0.1 lppb) after standing for one month.
  • a large blow-molded container made of a fluororesin containing a smooth inner surface can be formed at a relatively low temperature. It can be provided at the molding temperature.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

L'invention concerne un contenant de grande taille, moulé par soufflage, possédant une surface intérieure lisse et une épaisseur de paroi régulière, à utiliser pour le stockage/transport de produits chimiques liquides très purs; et un matériau de moulage par soufflage, comprenant un copolymère de tétrafluoroéthylène possédant un point de fusion de 230 °C ou moins. Le contenant est produit par moulage soufflage du matériau de moulage comprenant la fluororésine moulable par soufflage possédant (A) un indice de fluidité à 230 °C de 0,1 à 20 g/10 min, (B) une tension de fusion à 190 à 260 °C de 2 à 50 gf, et (C) une concentration d'ions fluor libérés à 190 à 260 °C de 10 ppm ou moins.
PCT/JP1999/005130 1998-09-24 1999-09-21 Contenant moule par soufflage Ceased WO2000017057A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP26982598 1998-09-24
JP10/269825 1998-09-24

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WO2000017057A1 true WO2000017057A1 (fr) 2000-03-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014112176A (ja) * 2012-10-31 2014-06-19 Fujifilm Corp 化学増幅型レジスト膜のパターニング用有機系処理液、及び、化学増幅型レジスト膜のパターニング用有機系処理液の収容容器、並びに、これらを使用したパターン形成方法、電子デバイスの製造方法、及び、電子デバイス
JP2015007807A (ja) * 2012-10-31 2015-01-15 富士フイルム株式会社 化学増幅型レジスト膜のパターニング用有機系処理液、及び、化学増幅型レジスト膜のパターニング用有機系処理液の収容容器、並びに、これらを使用したパターン形成方法、電子デバイスの製造方法、及び、電子デバイス
WO2024195541A1 (fr) 2023-03-22 2024-09-26 東ソー株式会社 Contenant en résine de polyéthylène pour produit chimique de haute pureté
JP2025083595A (ja) * 2019-02-21 2025-05-30 ダイキン工業株式会社 ハロゲン化アルケン化合物及びフッ化アルキン化合物の製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433583A (en) * 1977-08-19 1979-03-12 Asahi Glass Co Ltd Ethylene-tetrafluoroethylene copolymer and its preparation
JPS5686748A (en) * 1979-12-18 1981-07-14 Toppan Printing Co Ltd Multilayer hollow vessel
JPS63281945A (ja) * 1987-05-06 1988-11-18 Mitsubishi Petrochem Co Ltd 輸液用容器
EP0457255B1 (fr) * 1990-05-14 1994-11-23 Daikin Industries, Limited Copolymère de tétrafluoréthylène et son procédé de préparation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433583A (en) * 1977-08-19 1979-03-12 Asahi Glass Co Ltd Ethylene-tetrafluoroethylene copolymer and its preparation
JPS5686748A (en) * 1979-12-18 1981-07-14 Toppan Printing Co Ltd Multilayer hollow vessel
JPS63281945A (ja) * 1987-05-06 1988-11-18 Mitsubishi Petrochem Co Ltd 輸液用容器
EP0457255B1 (fr) * 1990-05-14 1994-11-23 Daikin Industries, Limited Copolymère de tétrafluoréthylène et son procédé de préparation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014112176A (ja) * 2012-10-31 2014-06-19 Fujifilm Corp 化学増幅型レジスト膜のパターニング用有機系処理液、及び、化学増幅型レジスト膜のパターニング用有機系処理液の収容容器、並びに、これらを使用したパターン形成方法、電子デバイスの製造方法、及び、電子デバイス
JP2015007807A (ja) * 2012-10-31 2015-01-15 富士フイルム株式会社 化学増幅型レジスト膜のパターニング用有機系処理液、及び、化学増幅型レジスト膜のパターニング用有機系処理液の収容容器、並びに、これらを使用したパターン形成方法、電子デバイスの製造方法、及び、電子デバイス
US10705428B2 (en) 2012-10-31 2020-07-07 Fujifilm Corporation Organic processing liquid for patterning chemical amplification resist film, container for organic processing liquid for patterning chemical amplification resist film, and pattern forming method, method of manufacturing electronic device, and electronic device using the same
JP2025083595A (ja) * 2019-02-21 2025-05-30 ダイキン工業株式会社 ハロゲン化アルケン化合物及びフッ化アルキン化合物の製造方法
WO2024195541A1 (fr) 2023-03-22 2024-09-26 東ソー株式会社 Contenant en résine de polyéthylène pour produit chimique de haute pureté
EP4685064A1 (fr) 2023-03-22 2026-01-28 Tosoh Corporation Contenant en résine de polyéthylène pour produit chimique de haute pureté

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