CA1172009A - Elastomeres renforces, moules par injection- reaction - Google Patents
Elastomeres renforces, moules par injection- reactionInfo
- Publication number
- CA1172009A CA1172009A CA000384333A CA384333A CA1172009A CA 1172009 A CA1172009 A CA 1172009A CA 000384333 A CA000384333 A CA 000384333A CA 384333 A CA384333 A CA 384333A CA 1172009 A CA1172009 A CA 1172009A
- Authority
- CA
- Canada
- Prior art keywords
- reaction
- polyol
- stream
- injection molded
- inert filler
- 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.)
- Expired
Links
- 238000002347 injection Methods 0.000 title claims abstract description 6
- 239000007924 injection Substances 0.000 title claims abstract description 6
- 239000000806 elastomer Substances 0.000 title abstract description 15
- 229920001971 elastomer Polymers 0.000 title abstract description 14
- 229920005862 polyol Polymers 0.000 claims abstract description 32
- 150000003077 polyols Chemical class 0.000 claims abstract description 32
- 239000012948 isocyanate Substances 0.000 claims abstract description 21
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 10
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical group C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 27
- 239000005056 polyisocyanate Substances 0.000 claims description 22
- 229920001228 polyisocyanate Polymers 0.000 claims description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 4
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 4
- 230000000704 physical effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 16
- 239000003054 catalyst Substances 0.000 description 10
- 238000010107 reaction injection moulding Methods 0.000 description 10
- 229920006389 polyphenyl polymer Polymers 0.000 description 7
- -1 propylene, butylene Chemical group 0.000 description 7
- 238000009472 formulation Methods 0.000 description 6
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000004970 Chain extender Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 150000002009 diols Chemical class 0.000 description 5
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- ZMSQJSMSLXVTKN-UHFFFAOYSA-N 4-[2-(2-morpholin-4-ylethoxy)ethyl]morpholine Chemical compound C1COCCN1CCOCCN1CCOCC1 ZMSQJSMSLXVTKN-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000001414 amino alcohols Chemical class 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012263 liquid product Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 125000005702 oxyalkylene group Chemical group 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- FTTATHOUSOIFOQ-UHFFFAOYSA-N 1,2,3,4,6,7,8,8a-octahydropyrrolo[1,2-a]pyrazine Chemical compound C1NCCN2CCCC21 FTTATHOUSOIFOQ-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- ICLCCFKUSALICQ-UHFFFAOYSA-N 1-isocyanato-4-(4-isocyanato-3-methylphenyl)-2-methylbenzene Chemical compound C1=C(N=C=O)C(C)=CC(C=2C=C(C)C(N=C=O)=CC=2)=C1 ICLCCFKUSALICQ-UHFFFAOYSA-N 0.000 description 1
- DTZHXCBUWSTOPO-UHFFFAOYSA-N 1-isocyanato-4-[(4-isocyanato-3-methylphenyl)methyl]-2-methylbenzene Chemical compound C1=C(N=C=O)C(C)=CC(CC=2C=C(C)C(N=C=O)=CC=2)=C1 DTZHXCBUWSTOPO-UHFFFAOYSA-N 0.000 description 1
- AXFVIWBTKYFOCY-UHFFFAOYSA-N 1-n,1-n,3-n,3-n-tetramethylbutane-1,3-diamine Chemical compound CN(C)C(C)CCN(C)C AXFVIWBTKYFOCY-UHFFFAOYSA-N 0.000 description 1
- QZWKEPYTBWZJJA-UHFFFAOYSA-N 3,3'-Dimethoxybenzidine-4,4'-diisocyanate Chemical compound C1=C(N=C=O)C(OC)=CC(C=2C=C(OC)C(N=C=O)=CC=2)=C1 QZWKEPYTBWZJJA-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- CQQXCSFSYHAZOO-UHFFFAOYSA-L [acetyloxy(dioctyl)stannyl] acetate Chemical compound CCCCCCCC[Sn](OC(C)=O)(OC(C)=O)CCCCCCCC CQQXCSFSYHAZOO-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- PMMYEEVYMWASQN-IMJSIDKUSA-N cis-4-Hydroxy-L-proline Chemical compound O[C@@H]1CN[C@H](C(O)=O)C1 PMMYEEVYMWASQN-IMJSIDKUSA-N 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- GIWKOZXJDKMGQC-UHFFFAOYSA-L lead(2+);naphthalene-2-carboxylate Chemical compound [Pb+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 GIWKOZXJDKMGQC-UHFFFAOYSA-L 0.000 description 1
- DSSXKBBEJCDMBT-UHFFFAOYSA-M lead(2+);octanoate Chemical compound [Pb+2].CCCCCCCC([O-])=O DSSXKBBEJCDMBT-UHFFFAOYSA-M 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 150000003003 phosphines Chemical group 0.000 description 1
- 150000003142 primary aromatic amines Chemical class 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18582680A | 1980-09-10 | 1980-09-10 | |
| US185,826 | 1980-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1172009A true CA1172009A (fr) | 1984-08-07 |
Family
ID=22682598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000384333A Expired CA1172009A (fr) | 1980-09-10 | 1981-08-20 | Elastomeres renforces, moules par injection- reaction |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS591731B2 (fr) |
| BR (1) | BR8105235A (fr) |
| CA (1) | CA1172009A (fr) |
| DE (1) | DE3134491A1 (fr) |
| ES (1) | ES505343A0 (fr) |
| FR (1) | FR2495624A1 (fr) |
| GB (1) | GB2083484B (fr) |
| IT (1) | IT1139957B (fr) |
| MX (1) | MX166357B (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474900A (en) * | 1983-06-08 | 1984-10-02 | Texaco Inc. | Reaction injection molded elastomers |
| GB9102025D0 (en) * | 1991-01-30 | 1991-03-13 | Recon Dev | Improvements relating to moulding of artificial stone |
| US5240969A (en) * | 1992-07-16 | 1993-08-31 | Basf Corporation | Low-density RRIM using mineral fiber filler |
| US5208269A (en) * | 1992-07-16 | 1993-05-04 | Basf Corporation | Low-density RRIM using mineral fiber filler |
| JPH0644091U (ja) * | 1992-11-08 | 1994-06-10 | 明 水上 | 電磁調理用鍋 |
| US5427853A (en) * | 1993-12-20 | 1995-06-27 | General Motors Corporation | Reinforcement preform, method of making same and reinforced composite made therefrom |
| US5681867A (en) * | 1996-07-03 | 1997-10-28 | Basf Corporation | Low-density RRIM having improved coefficient of linear thermal expansion and heat deflection properties |
| WO1999057184A1 (fr) * | 1998-05-04 | 1999-11-11 | Huntsman Ici Chemicals Llc | Diminution de la viscosite d'un constituant de polyol charge |
| EP1178063A1 (fr) * | 2000-08-01 | 2002-02-06 | Huntsman International Llc | Procédé pour la préparation d'un polyuréthane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1227124A (fr) * | 1968-04-03 | 1971-04-07 |
-
1981
- 1981-07-24 GB GB8122959A patent/GB2083484B/en not_active Expired
- 1981-08-05 MX MX026642A patent/MX166357B/es unknown
- 1981-08-17 BR BR8105235A patent/BR8105235A/pt unknown
- 1981-08-20 CA CA000384333A patent/CA1172009A/fr not_active Expired
- 1981-09-01 DE DE19813134491 patent/DE3134491A1/de not_active Withdrawn
- 1981-09-08 JP JP56140454A patent/JPS591731B2/ja not_active Expired
- 1981-09-09 IT IT23868/81A patent/IT1139957B/it active
- 1981-09-09 ES ES505343A patent/ES505343A0/es active Granted
- 1981-09-09 FR FR8117076A patent/FR2495624A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| MX166357B (es) | 1992-12-30 |
| ES8206582A1 (es) | 1982-08-16 |
| JPS5778411A (en) | 1982-05-17 |
| GB2083484B (en) | 1983-12-21 |
| DE3134491A1 (de) | 1982-05-27 |
| ES505343A0 (es) | 1982-08-16 |
| FR2495624B1 (fr) | 1984-12-14 |
| IT1139957B (it) | 1986-09-24 |
| JPS591731B2 (ja) | 1984-01-13 |
| IT8123868A0 (it) | 1981-09-09 |
| GB2083484A (en) | 1982-03-24 |
| BR8105235A (pt) | 1982-04-27 |
| FR2495624A1 (fr) | 1982-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |