CA2261114A1 - Materials for production of containers - Google Patents
Materials for production of containers Download PDFInfo
- Publication number
- CA2261114A1 CA2261114A1 CA002261114A CA2261114A CA2261114A1 CA 2261114 A1 CA2261114 A1 CA 2261114A1 CA 002261114 A CA002261114 A CA 002261114A CA 2261114 A CA2261114 A CA 2261114A CA 2261114 A1 CA2261114 A1 CA 2261114A1
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- CA
- Canada
- Prior art keywords
- purity
- polyethylene
- chemicals
- specific density
- storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the use of polyethylene materials for the production of solid storage and transportation containers, and also for the production of lined storage and transportation containers for chemicals, and in particular for transportation and storage of high-purity, liquid chemicals for the electronics industry. The invention also relates to the use of said materials for producing equipment which is required to remove the chemicals from said containers.
Description
CA 02261114 l999-01-lS
.,~. . .~ , 4~
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Materials for the manufacture of transport containers The invention relates to the use of polyethylene materials for the manufacture of massive transport and storage containers and also for the manufacture of lined transport and storage containers for chemicals, especially for the transport and storage of high-purity liquid chemicals for the electronics industry. The invention further relates to the use of these materials for the manufacture of the equipment required to dis-charge the chemicals from the transport containers and tofill said containers.
In many instances the manufacture of electronic components requires liquid chemicals which are subject to the strictest purity standards. This is particularly the case for the manufacture of large-scale integrated microchips. On the one hand, the purity of these chemi-cals is at a level where it is not sufficient just to manufacture the chemicals to the purity demanded; it is also necessary to ensure that no further impurities enter the product during shipping or during storage and handl-ing. On the other hand, the storage and transport safety must be guaranteed because the aggressive properties of some of these chemicals makes them difficult to handle and store. In many cases they are also toxicologically harmful or have hazardous chemical properties. An accidental spillage, e.g. due to damage to the transport container or leaks, caused by the aggressive properties of some of these chemicals, must be ruled out with a high degree of certainty.
Because of the demands on the chemicals to be shipped, the choice of material for such transport containers must be governed primarily by the exclusion of any impurities. This demand is normally satisfied by containers made of fluorinated or perfluorinated materials or containers lined with such materials.
According to demands, these transport and storage containers are manufactured as the pressureless version or as pressure containers.
Pressureless containers must not be exposed to any internal pressure applied from outside.
Similarly, the liquid chemicals must be dis-charged from such containers without the application of pressure, i.e. with the aid of pumps. These pumps necessarily have moving parts, so the possibility of impurities due to wear occurring in the region of the pumps cannot be completely ruled out.
However, especially where pressure resistant con-tainers are used, it is known to discharge chemicals byintroducing pressurized inert gases through dip tubes so that no pumps are required and no wear can thus occur.
DE 36 36 886 has disclosed a transport container for high-purity liquid chemicals which has a double-shell inner container, the innermost lining of which consists of a fluorinated plastic. The multi-shell design of this transport container is such that it can be pressurized.
The disadvantages, however, are on the one hand that the only materials suitable for the manufacture of such inner linings are special fluorinated plastics which have to be produced in elaborate and therefore expensive processes, and on the other hand that the processability of these plastics is made more difficult by the fact that, because of the high purity demands on the chemicals to be shipped, not just any processing aids can be added to the plastic and contamination by tools and environmental factors has to be extensively minimized.
As regards the choice of material for the manu-facture of massive transport containers, the polymer material must have not only resistance to possible leaching and embrittlement by chemicals to be shipped, but also an adequate rigidity as well as a degree of elasticity, so that containers made of the material are insensitive and stable to pressure and impact and do not tend to deform or crack. Furthermore, these material properties must be durable so that, even during prolonged storage, both the purity of the chemicals to be shipped and the properties of the container are preserved.
One object of the invention is therefore to CA 02261114 1999-01-1~
provide a suitable material for the manufacture of transport containers for high-purity liquid chemicals, and the associated e~uipment, which is economic to produce, is obtained in high purity during synthesis, contains only a very low concentration of polymerization catalysts, if any, and can be processed easily, if possible without the addition of processing aids or with the addition only of processing aids which do not have a detrimental effect in use or which are not leached out of the material by the chemicals to be shipped. Another object of the invention is to provide a suitable polymer material from which it is possible to manufacture both massive storage and transport containers for high-purity liquid chemicals, and linings for corresponding con-tainers which can be pressurized.
The object is achieved according to the inventionby the use of HD polyethylene (HD = high density) for the manufacture of massive storage and transport containers for high-purity liquid chemicals for the electronics industry, and the associated equipment, and for the manufacture of linings for corresponding containers which can be pressurized, and the associated equipment. The object is achieved in particular by the use of HD
polyethylene with a specific density of 0.940 - 0.970 25 g/cm3, especially 0.942 - 0.961 g/cm3.
According to current opinion, the only suitable materials for containers which are to be used for ship-ping high-purity acids or bases are plastics based on fluorinated hydrocarbons. Examples of such materials are polytetrafluoroethylene (PTFE), perfluoroalkoxy polymers (PFA), polyvinylidene fluorides (PVDF) or poly(ethylene/chlorotrifluoroethylene) (ECTFE), whichare described in general usage by the well-known trademark "Teflon". For those skilled in the art, plastics described as Teflon are insensitive to the effect of aggressive chemicals such as particularly strong acids or bases, and also to the effects of temperature. These plastics are expensive and therefore uneconomic materials.
. ~ .
CA 0226lll4 l999-Ol-l~
Experiments have now shown, surprisingly, that non-fluorinated plastics can also be used for the manu-facture of high-quality transport containers and the associated equipment, e.g. dip tubes, pump parts and 5 hoses, for high-purity liquid chemicals for the elec-tronics industry. Selected HD polyethylenes (high density polyethylenes), namely polyethylenes with a specific density in the range 0. 940 - 0.970 g/cm3, espec-ially 0. 942 - 0.961 g/cm3, have proved to be particularly suitable materials for the desired use. Furthermore, these polyethylene grades are distinguished analytically by a particularly low content of catalyst residues.
Therefore, compared with other materials, these materials release particularly small amounts of ionic impurities 15 when in contact with both basic and acidic high-purity chemicals. Also, when in contact with chemicals, com-paratively few particles are produced due to interactions between the chemicals and the material. This is particu-larly important with regard to use of the material in the 20 manufacture of the equipment for filling the containers and discharging the chemicals. Surprisingly, these materials are suitable both for the manufacture of dip tubes and for the manufacture of pumps which are required for discharging the high-purity chemicals from 25 pressureless transport containers and conveying them to the processing site.
This was particularly surprising because other corresponding polyethylene materials which for many years have been used successfully for the transport of hazard-30 OUS goods are suitable as unsuitable for the transportand storage of high-purity liquid chemicals. When tested, these plastics were found to release too many particles and an unacceptable amount of ionic impurities.
Polyethylene materials marketed by BASF under the 35 trademark Lupolen have proved to be particularly suitable materials for said purpose. In storage tests, the material grades commercially available under the names Lupolen 6021 D, Lupolen 5021 D, Lupolen 4261 A Q 149 and Lupolen 4261 A Q 135 have proved to be particularly CA 02261114 1999-01-1~
suitable from this group of polyethylene specifications.
These materials are particularly suitable for the use according to the invention because they are extrudab-le but can also be welded without a loss of quality.
This affords the possibility of manufacturing almost any size of container by welding appropriate slabs of this material. By means of textile fabric applied to one side of these slabs and anchored in the material, it is possible to prefabricate relatively thin-walled inner containers. By the application of glass fibre-reinforced polyester resin, it is possible to manufacture containers which are stable per se and which, when designed appro-priately, comply with the regulations governing pressure containers. Structurally these containers consequently have a double-shell design.- In particular, said struc-ture comprises shells which are joined together, the inner shell consisting of the HD polyethylene selected according to the invention and the outer shell consisting of a glass fibre-reinforced polyester resin. There is the further possibility of modifying the surface of the manufactured containers by methods known to those skilled in the art, for example by painting, backing or disper-sion coating with suitable barrier polymers or by covering with thin metal foil. Barrier polymers suitable for this purpose are polyamide, polyester, polyvinylidene difluoride or polymers based on acrylonitrile. The permeability to gases, vapours and liquids can be reduced in this way.
The values given in the following Tables will explain the invention in greater detail but are not intended to limit the invention to said Lupolen poly-ethylene materials studied.
.
CA 0226lll4 l999-Ol-l~
Table 1 Release of cationic impurities from polyethylene materials in the presence of high-purity chemicals Values Lupolen Lupolen Lupolen LLDPE LLDPE VEPE
found in 5021 D 6031 M 6060 D Neste Neste Scair-ng/g 1st 1st 1stNCPE NCPE link pelletelution elution elution a682 8682 8000 G
Time: 7Time: 7 Time: 7 1st 2nd 5 days days days Chemical: Chemical: Chemical: elution 1st elution HCl 35% HCl 35%HCl 35% Time: 7 Time: 7 Time: 7 40 ~C40 ~C 40 ~C days days days Chemical: Chemical: Chemical:
HF 49~~F 49% HF 49%
40 ~C 40 ~C 40 ~C
Aluminimum 16 170 8 218 238 815 Antimony - - - - - -1 0 Arsenic aarium - - - 3 - 3 Beryllium i3ismuth - - - 72 84 18 50ron Cadmium Calcium 6.6 60 1797 110 147 Chromium 4 0.3 45 Cobalt Copper Gallium Germanium Gold Indium Iron 18 24 13 52 17 86 Lead - - - - - -Lithium Magnesium1.5 39 - 62 38 82 Manganese Molybdenum Nickel Platinum - - - - - -Potassium 3 - _ 30 45 94 Silicon Silver Sodium 20 - 16 110 150 300 Strontium Thallium Tin - - - - - 1.5 Titanium - 30 - 86 5 16 Vanadium - - - - - 3 Zinc 0.9 3.6 8 4800 714 72 Zirconium . .
CA 0226lll4 l999-Ol-l~
Table 2 Release of cationic impurities from other polyethylene materials in the presence of high-purity chemicals Values Hostalen Hostalen Lupolen Lupolen Lupolen Lupolen found in GM6255 GM6255 4261A 5261Z 5261Z 6021 D
ng/g 1st 1st Q135 Q135Q445 1st pelletelution elution 1st lse 1st elution Time: 6 Time: 26 elution elution elution Time: 7 days days Time: 7 Time: 7Time: 7 days Chemical: Chemlcal: daysdays days Chemical:
HF 49% HF 49% Chemical: Chemical: Chemical: HCl 35S
25 ~C 25 ~C HCl 35%HCl 35%HCl 35% 40 ~C
40 ~C 40 ~C 40 ~C
Aluminimum 60 0.5 60 1040 110 17 Antimony - - - - - -1 0 Arsenic - Barium 1.5 - - - - -Beryllium - - - - - --Bismuth - - - - 84 Boron 15 Cadmium Calcium 90 0.8 10 33 45 3.6 Chromium 13 1.3 70 110 147 3.6 Cobalt Copper 4 - 1.5 20 Gallium Germanium Gold Indium Iron 80 2 63 33 33 6.3 25 Lead 0.5 Lithium Magnesium 26 - 1.5 3 4.5 Manganese 1.3 - 0.3 Molybdenum 30 Nickel 2 - 1.5 Platinum - - - - - -Potassium 10 - 30 2 1.5 6.3 Silicon Silver 35 Sodium 7 - 16 36 24 24 Strontium Thallium Tin Titanium - 5 2.5 40 Vanadium Zinc29 - 1.5 0.3 2.4 Zirconium
.,~. . .~ , 4~
- r~
Materials for the manufacture of transport containers The invention relates to the use of polyethylene materials for the manufacture of massive transport and storage containers and also for the manufacture of lined transport and storage containers for chemicals, especially for the transport and storage of high-purity liquid chemicals for the electronics industry. The invention further relates to the use of these materials for the manufacture of the equipment required to dis-charge the chemicals from the transport containers and tofill said containers.
In many instances the manufacture of electronic components requires liquid chemicals which are subject to the strictest purity standards. This is particularly the case for the manufacture of large-scale integrated microchips. On the one hand, the purity of these chemi-cals is at a level where it is not sufficient just to manufacture the chemicals to the purity demanded; it is also necessary to ensure that no further impurities enter the product during shipping or during storage and handl-ing. On the other hand, the storage and transport safety must be guaranteed because the aggressive properties of some of these chemicals makes them difficult to handle and store. In many cases they are also toxicologically harmful or have hazardous chemical properties. An accidental spillage, e.g. due to damage to the transport container or leaks, caused by the aggressive properties of some of these chemicals, must be ruled out with a high degree of certainty.
Because of the demands on the chemicals to be shipped, the choice of material for such transport containers must be governed primarily by the exclusion of any impurities. This demand is normally satisfied by containers made of fluorinated or perfluorinated materials or containers lined with such materials.
According to demands, these transport and storage containers are manufactured as the pressureless version or as pressure containers.
Pressureless containers must not be exposed to any internal pressure applied from outside.
Similarly, the liquid chemicals must be dis-charged from such containers without the application of pressure, i.e. with the aid of pumps. These pumps necessarily have moving parts, so the possibility of impurities due to wear occurring in the region of the pumps cannot be completely ruled out.
However, especially where pressure resistant con-tainers are used, it is known to discharge chemicals byintroducing pressurized inert gases through dip tubes so that no pumps are required and no wear can thus occur.
DE 36 36 886 has disclosed a transport container for high-purity liquid chemicals which has a double-shell inner container, the innermost lining of which consists of a fluorinated plastic. The multi-shell design of this transport container is such that it can be pressurized.
The disadvantages, however, are on the one hand that the only materials suitable for the manufacture of such inner linings are special fluorinated plastics which have to be produced in elaborate and therefore expensive processes, and on the other hand that the processability of these plastics is made more difficult by the fact that, because of the high purity demands on the chemicals to be shipped, not just any processing aids can be added to the plastic and contamination by tools and environmental factors has to be extensively minimized.
As regards the choice of material for the manu-facture of massive transport containers, the polymer material must have not only resistance to possible leaching and embrittlement by chemicals to be shipped, but also an adequate rigidity as well as a degree of elasticity, so that containers made of the material are insensitive and stable to pressure and impact and do not tend to deform or crack. Furthermore, these material properties must be durable so that, even during prolonged storage, both the purity of the chemicals to be shipped and the properties of the container are preserved.
One object of the invention is therefore to CA 02261114 1999-01-1~
provide a suitable material for the manufacture of transport containers for high-purity liquid chemicals, and the associated e~uipment, which is economic to produce, is obtained in high purity during synthesis, contains only a very low concentration of polymerization catalysts, if any, and can be processed easily, if possible without the addition of processing aids or with the addition only of processing aids which do not have a detrimental effect in use or which are not leached out of the material by the chemicals to be shipped. Another object of the invention is to provide a suitable polymer material from which it is possible to manufacture both massive storage and transport containers for high-purity liquid chemicals, and linings for corresponding con-tainers which can be pressurized.
The object is achieved according to the inventionby the use of HD polyethylene (HD = high density) for the manufacture of massive storage and transport containers for high-purity liquid chemicals for the electronics industry, and the associated equipment, and for the manufacture of linings for corresponding containers which can be pressurized, and the associated equipment. The object is achieved in particular by the use of HD
polyethylene with a specific density of 0.940 - 0.970 25 g/cm3, especially 0.942 - 0.961 g/cm3.
According to current opinion, the only suitable materials for containers which are to be used for ship-ping high-purity acids or bases are plastics based on fluorinated hydrocarbons. Examples of such materials are polytetrafluoroethylene (PTFE), perfluoroalkoxy polymers (PFA), polyvinylidene fluorides (PVDF) or poly(ethylene/chlorotrifluoroethylene) (ECTFE), whichare described in general usage by the well-known trademark "Teflon". For those skilled in the art, plastics described as Teflon are insensitive to the effect of aggressive chemicals such as particularly strong acids or bases, and also to the effects of temperature. These plastics are expensive and therefore uneconomic materials.
. ~ .
CA 0226lll4 l999-Ol-l~
Experiments have now shown, surprisingly, that non-fluorinated plastics can also be used for the manu-facture of high-quality transport containers and the associated equipment, e.g. dip tubes, pump parts and 5 hoses, for high-purity liquid chemicals for the elec-tronics industry. Selected HD polyethylenes (high density polyethylenes), namely polyethylenes with a specific density in the range 0. 940 - 0.970 g/cm3, espec-ially 0. 942 - 0.961 g/cm3, have proved to be particularly suitable materials for the desired use. Furthermore, these polyethylene grades are distinguished analytically by a particularly low content of catalyst residues.
Therefore, compared with other materials, these materials release particularly small amounts of ionic impurities 15 when in contact with both basic and acidic high-purity chemicals. Also, when in contact with chemicals, com-paratively few particles are produced due to interactions between the chemicals and the material. This is particu-larly important with regard to use of the material in the 20 manufacture of the equipment for filling the containers and discharging the chemicals. Surprisingly, these materials are suitable both for the manufacture of dip tubes and for the manufacture of pumps which are required for discharging the high-purity chemicals from 25 pressureless transport containers and conveying them to the processing site.
This was particularly surprising because other corresponding polyethylene materials which for many years have been used successfully for the transport of hazard-30 OUS goods are suitable as unsuitable for the transportand storage of high-purity liquid chemicals. When tested, these plastics were found to release too many particles and an unacceptable amount of ionic impurities.
Polyethylene materials marketed by BASF under the 35 trademark Lupolen have proved to be particularly suitable materials for said purpose. In storage tests, the material grades commercially available under the names Lupolen 6021 D, Lupolen 5021 D, Lupolen 4261 A Q 149 and Lupolen 4261 A Q 135 have proved to be particularly CA 02261114 1999-01-1~
suitable from this group of polyethylene specifications.
These materials are particularly suitable for the use according to the invention because they are extrudab-le but can also be welded without a loss of quality.
This affords the possibility of manufacturing almost any size of container by welding appropriate slabs of this material. By means of textile fabric applied to one side of these slabs and anchored in the material, it is possible to prefabricate relatively thin-walled inner containers. By the application of glass fibre-reinforced polyester resin, it is possible to manufacture containers which are stable per se and which, when designed appro-priately, comply with the regulations governing pressure containers. Structurally these containers consequently have a double-shell design.- In particular, said struc-ture comprises shells which are joined together, the inner shell consisting of the HD polyethylene selected according to the invention and the outer shell consisting of a glass fibre-reinforced polyester resin. There is the further possibility of modifying the surface of the manufactured containers by methods known to those skilled in the art, for example by painting, backing or disper-sion coating with suitable barrier polymers or by covering with thin metal foil. Barrier polymers suitable for this purpose are polyamide, polyester, polyvinylidene difluoride or polymers based on acrylonitrile. The permeability to gases, vapours and liquids can be reduced in this way.
The values given in the following Tables will explain the invention in greater detail but are not intended to limit the invention to said Lupolen poly-ethylene materials studied.
.
CA 0226lll4 l999-Ol-l~
Table 1 Release of cationic impurities from polyethylene materials in the presence of high-purity chemicals Values Lupolen Lupolen Lupolen LLDPE LLDPE VEPE
found in 5021 D 6031 M 6060 D Neste Neste Scair-ng/g 1st 1st 1stNCPE NCPE link pelletelution elution elution a682 8682 8000 G
Time: 7Time: 7 Time: 7 1st 2nd 5 days days days Chemical: Chemical: Chemical: elution 1st elution HCl 35% HCl 35%HCl 35% Time: 7 Time: 7 Time: 7 40 ~C40 ~C 40 ~C days days days Chemical: Chemical: Chemical:
HF 49~~F 49% HF 49%
40 ~C 40 ~C 40 ~C
Aluminimum 16 170 8 218 238 815 Antimony - - - - - -1 0 Arsenic aarium - - - 3 - 3 Beryllium i3ismuth - - - 72 84 18 50ron Cadmium Calcium 6.6 60 1797 110 147 Chromium 4 0.3 45 Cobalt Copper Gallium Germanium Gold Indium Iron 18 24 13 52 17 86 Lead - - - - - -Lithium Magnesium1.5 39 - 62 38 82 Manganese Molybdenum Nickel Platinum - - - - - -Potassium 3 - _ 30 45 94 Silicon Silver Sodium 20 - 16 110 150 300 Strontium Thallium Tin - - - - - 1.5 Titanium - 30 - 86 5 16 Vanadium - - - - - 3 Zinc 0.9 3.6 8 4800 714 72 Zirconium . .
CA 0226lll4 l999-Ol-l~
Table 2 Release of cationic impurities from other polyethylene materials in the presence of high-purity chemicals Values Hostalen Hostalen Lupolen Lupolen Lupolen Lupolen found in GM6255 GM6255 4261A 5261Z 5261Z 6021 D
ng/g 1st 1st Q135 Q135Q445 1st pelletelution elution 1st lse 1st elution Time: 6 Time: 26 elution elution elution Time: 7 days days Time: 7 Time: 7Time: 7 days Chemical: Chemlcal: daysdays days Chemical:
HF 49% HF 49% Chemical: Chemical: Chemical: HCl 35S
25 ~C 25 ~C HCl 35%HCl 35%HCl 35% 40 ~C
40 ~C 40 ~C 40 ~C
Aluminimum 60 0.5 60 1040 110 17 Antimony - - - - - -1 0 Arsenic - Barium 1.5 - - - - -Beryllium - - - - - --Bismuth - - - - 84 Boron 15 Cadmium Calcium 90 0.8 10 33 45 3.6 Chromium 13 1.3 70 110 147 3.6 Cobalt Copper 4 - 1.5 20 Gallium Germanium Gold Indium Iron 80 2 63 33 33 6.3 25 Lead 0.5 Lithium Magnesium 26 - 1.5 3 4.5 Manganese 1.3 - 0.3 Molybdenum 30 Nickel 2 - 1.5 Platinum - - - - - -Potassium 10 - 30 2 1.5 6.3 Silicon Silver 35 Sodium 7 - 16 36 24 24 Strontium Thallium Tin Titanium - 5 2.5 40 Vanadium Zinc29 - 1.5 0.3 2.4 Zirconium
Claims (13)
1. Use of HD polyethylene (HD = high density) for the production of solid storage and transport containers for high-purity, liquid chemicals for the electronics industry, characterized in that the polyethylene has a specific density of 0.940 -0.970 g/cm3 which, in contact with both high-purity basic and acidic chemicals, releases ionic impurities as follows:
Al = 60 ng/g, Ca = 60 ng/g Fe = 63 ng/g Mg = 16 ng/g Ti = 4.0 ng/g Zn = 6 ng/g Mn = 0.3 ng/g and Cu = 1.5 ng/g.
Al = 60 ng/g, Ca = 60 ng/g Fe = 63 ng/g Mg = 16 ng/g Ti = 4.0 ng/g Zn = 6 ng/g Mn = 0.3 ng/g and Cu = 1.5 ng/g.
2. Use according to Claim 1, characterized in that the HD polyethylene contains no polymerization catalyst.
3. Use of HD polyethylene (HD = high density) for the production of solid storage and transport containers for high-purity, liquid chemicals for the electronics industry, characterized in that, without addition of processing auxilliaries, the polyethylene has a specific density of 0.940 -0.970 g/cm3 which, in contact with high-purity, liquid chemicals, releases particularly small amounts of particles as impurities.
4. Use according to Claims 1-3, characterized in that the polyethylene has a specific density of 0.942 -0.961.
5. Use according to Claims 1-4 of HD polyethylene for the production of linings for storage and transport containers for high-purity, liquid chemicals for the electronics industry.
6. Use according to Claims 1-4 of HD polyethylene for the production of equipment, in particular submerged tubes, and liquid-conveying pumps, for storage and transport containers for high-purity, liquid chemicals for the electronics industry.
7. Use according to Claim 5, characterized in that the lining of the storage and transport container is a two-shell inner container whose inner shell is made from an HD polyethylene having a particularly low content of polymerization catalyst and a specific density of 0.940 -0.970 g/cm3, in particular a specific density of 0.942 - 0.961, which, both in contact with high-purity basic and acidic chemicals, releases particularly small amounts of ionic impurities and particularly small amounts of particles, which is surrounded by a glass-fibre-reinforced outer shell.
8. Use according to Claims 1-7, characterized in that the HD polyethylene is from the group consisting of Lupolen 6021 D, Lupolen 5021 D, Lupolen 4261 A
Q149 and Lupolen 4261 A Q 135.
Q149 and Lupolen 4261 A Q 135.
9. Use according to Claims 1-7, characterized in that the HD polyethylene is Lupolen 4261 A Q149.
10. Storage and transport containers for high-purity, liquid chemicals for the electronics industry, made from HD polyethylene having a specific density of 0.940 - 0.970 g/cm3, in particular a specific density of 0.942 - 0.961, which, both in contact with high-purity basic and acidic chemicals, releases ionic impurities as follows:
Al 60 ng/g, Ca 60 ng/g, Fe 63 ng/g, Mg 16 ng/g, Ti = 4.0 ng/g, Zn - 6.0 ng/g, Mn =
0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
Al 60 ng/g, Ca 60 ng/g, Fe 63 ng/g, Mg 16 ng/g, Ti = 4.0 ng/g, Zn - 6.0 ng/g, Mn =
0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
11. Linings for storage and transport containers for high-purity, liquid chemicals for the electronics industry, made from HD polyethylene having a specific density of 0.940 - 0.970 g/cm3, in particular a specific density of 0.942 - 0.961, which, both in contact with high-purity basic and acidic chemicals, releases ionic impurities as follows: Al = 60 ng/g, Ca = 60 ng/g, Fe = 63 ng/g, Mg = 16 ng/g, Ti = 4.0 ng/g, Zn = 6.0 ng/g, Mn =
0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
12. Submerged tubes for use in storage and transport containers for high-purity, liquid chemicals for the electronics industry, made from HD
polyethylene having a specific density of 0.940 -0.970 g/cm3, in particular a specific density of 0.942 - 0.961, which, both in contact with high-purity basic and acidic chemicals, releases ionic impurities as follows: Al = 60 ng/g, Ca = 60 ng/g, Fe = 63 ng/g, Mn = 16 ng/g, Ti = 4.0 ng/g, Zn =
6.0 ng/g, Mn = 0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
polyethylene having a specific density of 0.940 -0.970 g/cm3, in particular a specific density of 0.942 - 0.961, which, both in contact with high-purity basic and acidic chemicals, releases ionic impurities as follows: Al = 60 ng/g, Ca = 60 ng/g, Fe = 63 ng/g, Mn = 16 ng/g, Ti = 4.0 ng/g, Zn =
6.0 ng/g, Mn = 0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
13. Liquid-conveying pumps for high-purity, liquid chemicals fox the electronics industry, made from HD polyethylene having a specific density of 0.940 - 0.970 g/cm3, in particular a specific density of 0.942 - 0.961, which, both in contact with high-purity basic and acidic chemicals, releases ionic impurities as follows: Al = 60 ng/g, Ca = 60 ng/g, Fe = 63 ng/g, Mg = 16 ng/g, Ti = 4.0 ng/g, Zn =
6.0 ng/g, Mn = 0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
6.0 ng/g, Mn = 0.3 ng/g and Cu = 1.5 ng/g, and simultaneously releases particularly small amounts of particles.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19628643.3 | 1996-07-16 | ||
| DE19628643A DE19628643A1 (en) | 1996-07-16 | 1996-07-16 | Materials for the manufacture of transport containers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2261114A1 true CA2261114A1 (en) | 1998-01-22 |
Family
ID=7799963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002261114A Abandoned CA2261114A1 (en) | 1996-07-16 | 1997-07-04 | Materials for production of containers |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0918708A1 (en) |
| JP (1) | JP2000514487A (en) |
| KR (1) | KR20000023789A (en) |
| AU (1) | AU3443197A (en) |
| CA (1) | CA2261114A1 (en) |
| DE (1) | DE19628643A1 (en) |
| ID (1) | ID17644A (en) |
| TW (1) | TW342376B (en) |
| WO (1) | WO1998002368A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5840737A (en) | 1996-01-04 | 1998-11-24 | The Curators Of The University Of Missouri | Omeprazole solution and method for using same |
| US6489346B1 (en) | 1996-01-04 | 2002-12-03 | The Curators Of The University Of Missouri | Substituted benzimidazole dosage forms and method of using same |
| DE29722382U1 (en) * | 1997-12-18 | 1998-03-12 | Ottensteiner Kunststoff Gmbh | Item with a protective layer made of polyethylene |
| DE19821827A1 (en) * | 1998-05-15 | 1999-11-18 | Elenac Gmbh | Large hollow body made of polyethylene |
| DE19905765A1 (en) | 1999-02-11 | 2000-08-31 | Riedel De Haen Gmbh | Multi-layer device for storing and transporting chemicals |
| DE19924650A1 (en) | 1999-05-28 | 2000-12-14 | Riedel De Haen Gmbh | Multi-layer device for storing and transporting chemicals |
| US8993599B2 (en) | 2003-07-18 | 2015-03-31 | Santarus, Inc. | Pharmaceutical formulations useful for inhibiting acid secretion and methods for making and using them |
| AU2005201785B2 (en) * | 2004-04-28 | 2011-01-20 | Nite-Glo Innovations Pty. Ltd. | Dip tube |
| US8906940B2 (en) | 2004-05-25 | 2014-12-09 | Santarus, Inc. | Pharmaceutical formulations useful for inhibiting acid secretion and methods for making and using them |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712711A (en) * | 1982-03-05 | 1987-12-15 | Occidental Chemical Corporation | Container for transporting hazardous chemicals |
| JPH01208115A (en) * | 1988-02-16 | 1989-08-22 | Mitsubishi Kasei Corp | Large-sized vessel for high-purity chemical |
| DE8904366U1 (en) * | 1989-04-07 | 1989-05-24 | Riedel - De Haen Ag, 3016 Seelze, De | |
| DE9015191U1 (en) * | 1990-11-05 | 1991-01-17 | Riedel - De Haen Ag, 3016 Seelze, De | |
| DE9301152U1 (en) * | 1993-01-28 | 1993-03-18 | Riedel - De Haen Ag, 3016 Seelze, De | |
| DE9405113U1 (en) * | 1994-03-25 | 1994-05-26 | Mauser Werke Gmbh | Plastic container |
| DE29509003U1 (en) * | 1995-05-31 | 1995-08-31 | Mauser Werke Gmbh | container |
-
1996
- 1996-07-16 DE DE19628643A patent/DE19628643A1/en not_active Withdrawn
-
1997
- 1997-07-04 AU AU34431/97A patent/AU3443197A/en not_active Abandoned
- 1997-07-04 EP EP97930503A patent/EP0918708A1/en not_active Ceased
- 1997-07-04 JP JP10505571A patent/JP2000514487A/en active Pending
- 1997-07-04 WO PCT/EP1997/003534 patent/WO1998002368A1/en not_active Application Discontinuation
- 1997-07-04 CA CA002261114A patent/CA2261114A1/en not_active Abandoned
- 1997-07-10 ID IDP972401A patent/ID17644A/en unknown
- 1997-07-14 TW TW086109906A patent/TW342376B/en active
-
1999
- 1999-01-15 KR KR1019997000271A patent/KR20000023789A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0918708A1 (en) | 1999-06-02 |
| WO1998002368A1 (en) | 1998-01-22 |
| ID17644A (en) | 1998-01-15 |
| TW342376B (en) | 1998-10-11 |
| AU3443197A (en) | 1998-02-09 |
| KR20000023789A (en) | 2000-04-25 |
| DE19628643A1 (en) | 1998-01-22 |
| JP2000514487A (en) | 2000-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |