CN1041190A - 用于闪蒸纺织聚合物丛丝的卤化烃 - Google Patents
用于闪蒸纺织聚合物丛丝的卤化烃 Download PDFInfo
- Publication number
- CN1041190A CN1041190A CN89107885A CN89107885A CN1041190A CN 1041190 A CN1041190 A CN 1041190A CN 89107885 A CN89107885 A CN 89107885A CN 89107885 A CN89107885 A CN 89107885A CN 1041190 A CN1041190 A CN 1041190A
- Authority
- CN
- China
- Prior art keywords
- chloro
- solution
- halogenated hydrocarbon
- pressure
- hfc
- 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.)
- Pending
Links
- 150000008282 halocarbons Chemical class 0.000 title claims abstract description 87
- 238000009941 weaving Methods 0.000 title claims description 25
- 229920000642 polymer Polymers 0.000 title description 31
- 238000007701 flash-distillation Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 42
- 229920000098 polyolefin Polymers 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 36
- -1 polyethylene Polymers 0.000 claims description 68
- 239000004698 Polyethylene Substances 0.000 claims description 54
- 229920000573 polyethylene Polymers 0.000 claims description 54
- 238000009987 spinning Methods 0.000 claims description 38
- 210000003205 muscle Anatomy 0.000 claims description 36
- 239000004753 textile Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 18
- 239000006184 cosolvent Substances 0.000 claims description 17
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 11
- UHCBBWUQDAVSMS-UHFFFAOYSA-N fluoroethane Chemical compound CCF UHCBBWUQDAVSMS-UHFFFAOYSA-N 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 10
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- BHNZEZWIUMJCGF-UHFFFAOYSA-N 1-chloro-1,1-difluoroethane Chemical compound CC(F)(F)Cl BHNZEZWIUMJCGF-UHFFFAOYSA-N 0.000 claims description 6
- PFEOZHBOMNWTJB-UHFFFAOYSA-N 3-methylpentane Chemical compound CCC(C)CC PFEOZHBOMNWTJB-UHFFFAOYSA-N 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- ATEBGNALLCMSGS-UHFFFAOYSA-N 2-chloro-1,1-difluoroethane Chemical compound FC(F)CCl ATEBGNALLCMSGS-UHFFFAOYSA-N 0.000 claims description 5
- 206010061592 cardiac fibrillation Diseases 0.000 claims description 5
- 230000002600 fibrillogenic effect Effects 0.000 claims description 5
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000003963 dichloro group Chemical group Cl* 0.000 claims 2
- 239000002904 solvent Substances 0.000 description 34
- 239000000203 mixture Substances 0.000 description 24
- 238000012360 testing method Methods 0.000 description 13
- 238000009835 boiling Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000011877 solvent mixture Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000000326 ultraviolet stabilizing agent Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- YACLCMMBHTUQON-UHFFFAOYSA-N 1-chloro-1-fluoroethane Chemical class CC(F)Cl YACLCMMBHTUQON-UHFFFAOYSA-N 0.000 description 1
- 125000001340 2-chloroethyl group Chemical class [H]C([H])(Cl)C([H])([H])* 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000006704 dehydrohalogenation reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical class FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- BHAROVLESINHSM-UHFFFAOYSA-N toluene Chemical compound CC1=CC=CC=C1.CC1=CC=CC=C1 BHAROVLESINHSM-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/11—Flash-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23844288A | 1988-08-30 | 1988-08-30 | |
| US238,442 | 1988-08-30 | ||
| US37929189A | 1989-07-18 | 1989-07-18 | |
| US379,291 | 1989-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1041190A true CN1041190A (zh) | 1990-04-11 |
Family
ID=26931678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89107885A Pending CN1041190A (zh) | 1988-08-30 | 1989-08-30 | 用于闪蒸纺织聚合物丛丝的卤化烃 |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0361684B1 (fr) |
| JP (1) | JP2756489B2 (fr) |
| KR (1) | KR0136110B1 (fr) |
| CN (1) | CN1041190A (fr) |
| AU (1) | AU627488B2 (fr) |
| CA (1) | CA1338407C (fr) |
| DE (1) | DE68909880T2 (fr) |
| MX (1) | MX171962B (fr) |
| RU (1) | RU2002861C1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107849740A (zh) * | 2015-06-11 | 2018-03-27 | 纳幕尔杜邦公司 | 闪蒸纺丝方法 |
| CN111286790A (zh) * | 2020-03-05 | 2020-06-16 | 上海青昀新材料科技有限公司 | 一种安全的溶液纺丝方法 |
| CN112609334A (zh) * | 2020-11-30 | 2021-04-06 | 浙江青昀新材料科技有限公司 | 闪蒸无纺布及其制备方法 |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU643386B2 (en) * | 1988-08-30 | 1993-11-11 | E.I. Du Pont De Nemours And Company | Non-ozone depleting halocarbons for flash-spinning polymeric plexifilaments |
| US5032326A (en) * | 1988-08-31 | 1991-07-16 | E. I. Du Pont De Nemours And Company | Flash-spinning of polymeric plexifilaments |
| TW204377B (fr) * | 1989-07-12 | 1993-04-21 | Asahi Chemical Ind | |
| EP0517693B1 (fr) * | 1990-02-26 | 1997-05-02 | E.I. Du Pont De Nemours And Company | Halocarbones destines au flash-spinning de filaments acryliques de polyethylene |
| US5459188A (en) * | 1991-04-11 | 1995-10-17 | Peach State Labs, Inc. | Soil resistant fibers |
| US5286422A (en) * | 1991-08-03 | 1994-02-15 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for producing three-dimensional fiber using a halogen group solvent |
| US5279776A (en) * | 1991-09-17 | 1994-01-18 | E. I. Du Pont De Nemours And Company | Method for making strong discrete fibers |
| US5672307A (en) * | 1996-03-08 | 1997-09-30 | E. I. Du Pont De Nemours And Company | Flash spinning process |
| US5874036A (en) * | 1996-03-08 | 1999-02-23 | E. I. Du Pont De Nemours And Company | Flash-spinning process |
| US5977237A (en) * | 1996-03-08 | 1999-11-02 | E. I. Du Pont De Nemours And Company | Flash-spinning solution |
| US5985196A (en) * | 1998-01-20 | 1999-11-16 | E. I. Du Pont De Nemours And Company | Flash spinning process and flash spinning solution |
| US6524492B2 (en) | 2000-12-28 | 2003-02-25 | Peach State Labs, Inc. | Composition and method for increasing water and oil repellency of textiles and carpet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3018519A (en) | 1958-03-06 | 1962-01-30 | Coats & Clark | Apparatus for molding plastic insert in threaded lock nut blanks |
| US3081519A (en) * | 1962-01-31 | 1963-03-19 | Fibrillated strand | |
| NL300881A (fr) * | 1962-11-23 | |||
| US4528300A (en) * | 1984-01-31 | 1985-07-09 | The Dow Chemical Company | Process for producing dimensionally stable polyolefin foams using environmentally acceptable blowing agent systems |
-
1989
- 1989-08-29 MX MX017337A patent/MX171962B/es unknown
- 1989-08-29 RU SU894614935A patent/RU2002861C1/ru active
- 1989-08-29 DE DE89308701T patent/DE68909880T2/de not_active Expired - Fee Related
- 1989-08-29 AU AU40853/89A patent/AU627488B2/en not_active Ceased
- 1989-08-29 EP EP89308701A patent/EP0361684B1/fr not_active Expired - Lifetime
- 1989-08-30 JP JP1221847A patent/JP2756489B2/ja not_active Expired - Fee Related
- 1989-08-30 CN CN89107885A patent/CN1041190A/zh active Pending
- 1989-08-30 CA CA000609848A patent/CA1338407C/fr not_active Expired - Fee Related
- 1989-08-30 KR KR1019890012661A patent/KR0136110B1/ko not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107849740A (zh) * | 2015-06-11 | 2018-03-27 | 纳幕尔杜邦公司 | 闪蒸纺丝方法 |
| CN113046850A (zh) * | 2015-06-11 | 2021-06-29 | 纳幕尔杜邦公司 | 闪蒸纺丝方法 |
| CN111286790A (zh) * | 2020-03-05 | 2020-06-16 | 上海青昀新材料科技有限公司 | 一种安全的溶液纺丝方法 |
| CN112609334A (zh) * | 2020-11-30 | 2021-04-06 | 浙江青昀新材料科技有限公司 | 闪蒸无纺布及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0361684B1 (fr) | 1993-10-13 |
| JPH02160909A (ja) | 1990-06-20 |
| AU627488B2 (en) | 1992-08-27 |
| RU2002861C1 (ru) | 1993-11-15 |
| DE68909880T2 (de) | 1994-05-05 |
| MX171962B (es) | 1993-11-25 |
| JP2756489B2 (ja) | 1998-05-25 |
| CA1338407C (fr) | 1996-06-18 |
| KR0136110B1 (ko) | 1998-04-28 |
| KR900003435A (ko) | 1990-03-26 |
| AU4085389A (en) | 1990-03-08 |
| EP0361684A1 (fr) | 1990-04-04 |
| DE68909880D1 (de) | 1993-11-18 |
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Legal Events
| Date | Code | Title | Description |
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