CS221936B2 - Method of making the styrene resins modified by rubber - Google Patents
Method of making the styrene resins modified by rubber Download PDFInfo
- Publication number
- CS221936B2 CS221936B2 CS807377A CS737780A CS221936B2 CS 221936 B2 CS221936 B2 CS 221936B2 CS 807377 A CS807377 A CS 807377A CS 737780 A CS737780 A CS 737780A CS 221936 B2 CS221936 B2 CS 221936B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- polymerization
- styrene
- parts
- weight
- stage
- Prior art date
Links
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 229920005989 resin Polymers 0.000 title claims abstract description 36
- 239000011347 resin Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229920001971 elastomer Polymers 0.000 title abstract description 27
- 239000005060 rubber Substances 0.000 title abstract description 27
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 94
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 35
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- 150000003440 styrenes Chemical class 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 44
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 7
- 238000010528 free radical solution polymerization reaction Methods 0.000 claims description 6
- 238000010924 continuous production Methods 0.000 claims description 4
- 239000007870 radical polymerization initiator Substances 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000004793 Polystyrene Substances 0.000 abstract description 13
- 229920002223 polystyrene Polymers 0.000 abstract description 12
- KAKZBPTYRLMSJV-UHFFFAOYSA-N butadiene group Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000379 polymerizing effect Effects 0.000 abstract 2
- 229920002959 polymer blend Polymers 0.000 abstract 1
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 14
- 238000012360 testing method Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- HIBWGGKDGCBPTA-UHFFFAOYSA-N C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 Chemical class C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 HIBWGGKDGCBPTA-UHFFFAOYSA-N 0.000 description 3
- -1 benzoylperoxy Chemical group 0.000 description 3
- 239000001273 butane Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 229920002857 polybutadiene Polymers 0.000 description 3
- 229920005990 polystyrene resin Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- ZQMIGQNCOMNODD-UHFFFAOYSA-N diacetyl peroxide Chemical compound CC(=O)OOC(C)=O ZQMIGQNCOMNODD-UHFFFAOYSA-N 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- MYOQALXKVOJACM-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy pentaneperoxoate Chemical compound CCCCC(=O)OOOC(C)(C)C MYOQALXKVOJACM-UHFFFAOYSA-N 0.000 description 1
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 description 1
- RIPYNJLMMFGZSX-UHFFFAOYSA-N (5-benzoylperoxy-2,5-dimethylhexan-2-yl) benzenecarboperoxoate Chemical compound C=1C=CC=CC=1C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C1=CC=CC=C1 RIPYNJLMMFGZSX-UHFFFAOYSA-N 0.000 description 1
- BLKRGXCGFRXRNQ-SNAWJCMRSA-N (z)-3-carbonoperoxoyl-4,4-dimethylpent-2-enoic acid Chemical compound OC(=O)/C=C(C(C)(C)C)\C(=O)OO BLKRGXCGFRXRNQ-SNAWJCMRSA-N 0.000 description 1
- NALFRYPTRXKZPN-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane Chemical compound CC1CC(C)(C)CC(OOC(C)(C)C)(OOC(C)(C)C)C1 NALFRYPTRXKZPN-UHFFFAOYSA-N 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- QUBBAXISAHIDNM-UHFFFAOYSA-N 1-ethyl-2,3-dimethylbenzene Chemical group CCC1=CC=CC(C)=C1C QUBBAXISAHIDNM-UHFFFAOYSA-N 0.000 description 1
- HYFLWBNQFMXCPA-UHFFFAOYSA-N 1-ethyl-2-methylbenzene Chemical compound CCC1=CC=CC=C1C HYFLWBNQFMXCPA-UHFFFAOYSA-N 0.000 description 1
- HQOVXPHOJANJBR-UHFFFAOYSA-N 2,2-bis(tert-butylperoxy)butane Chemical compound CC(C)(C)OOC(C)(CC)OOC(C)(C)C HQOVXPHOJANJBR-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- JGBAASVQPMTVHO-UHFFFAOYSA-N 2,5-dihydroperoxy-2,5-dimethylhexane Chemical compound OOC(C)(C)CCC(C)(C)OO JGBAASVQPMTVHO-UHFFFAOYSA-N 0.000 description 1
- YKTNISGZEGZHIS-UHFFFAOYSA-N 2-$l^{1}-oxidanyloxy-2-methylpropane Chemical group CC(C)(C)O[O] YKTNISGZEGZHIS-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- AFSSYGZIYMAAOC-UHFFFAOYSA-N 2-butylperoxy-2-ethylhexanoic acid Chemical compound CCCCOOC(CC)(C(O)=O)CCCC AFSSYGZIYMAAOC-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- KRDXTHSSNCTAGY-UHFFFAOYSA-N 2-cyclohexylpyrrolidine Chemical compound C1CCNC1C1CCCCC1 KRDXTHSSNCTAGY-UHFFFAOYSA-N 0.000 description 1
- MIRQGKQPLPBZQM-UHFFFAOYSA-N 2-hydroperoxy-2,4,4-trimethylpentane Chemical compound CC(C)(C)CC(C)(C)OO MIRQGKQPLPBZQM-UHFFFAOYSA-N 0.000 description 1
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 1
- FCYVWWWTHPPJII-UHFFFAOYSA-N 2-methylidenepropanedinitrile Chemical compound N#CC(=C)C#N FCYVWWWTHPPJII-UHFFFAOYSA-N 0.000 description 1
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 1
- CARSMBZECAABMO-UHFFFAOYSA-N 3-chloro-2,6-dimethylbenzoic acid Chemical compound CC1=CC=C(Cl)C(C)=C1C(O)=O CARSMBZECAABMO-UHFFFAOYSA-N 0.000 description 1
- CEBRPXLXYCFYGU-UHFFFAOYSA-N 3-methylbut-1-enylbenzene Chemical compound CC(C)C=CC1=CC=CC=C1 CEBRPXLXYCFYGU-UHFFFAOYSA-N 0.000 description 1
- CAMBAGZYTIDFBK-UHFFFAOYSA-N 3-tert-butylperoxy-2-methylpropan-1-ol Chemical compound CC(CO)COOC(C)(C)C CAMBAGZYTIDFBK-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 229920001890 Novodur Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 241000526145 Psylla Species 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- SPTHWAJJMLCAQF-UHFFFAOYSA-M ctk4f8481 Chemical compound [O-]O.CC(C)C1=CC=CC=C1C(C)C SPTHWAJJMLCAQF-UHFFFAOYSA-M 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- QUPCNWFFTANZPX-UHFFFAOYSA-N hydrogen peroxide;1-methyl-4-propan-2-ylcyclohexane Chemical compound OO.CC(C)C1CCC(C)CC1 QUPCNWFFTANZPX-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000000707 stereoselective effect Effects 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- JZFHXRUVMKEOFG-UHFFFAOYSA-N tert-butyl dodecaneperoxoate Chemical compound CCCCCCCCCCCC(=O)OOC(C)(C)C JZFHXRUVMKEOFG-UHFFFAOYSA-N 0.000 description 1
- GSECCTDWEGTEBD-UHFFFAOYSA-N tert-butylperoxycyclohexane Chemical compound CC(C)(C)OOC1CCCCC1 GSECCTDWEGTEBD-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
- Polymerisation Methods In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54140466A JPS5919576B2 (ja) | 1979-11-01 | 1979-11-01 | ゴム変性スチレン系樹脂の製造方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS221936B2 true CS221936B2 (en) | 1983-04-29 |
Family
ID=15269246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS807377A CS221936B2 (en) | 1979-11-01 | 1980-10-31 | Method of making the styrene resins modified by rubber |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4378452A (ro) |
| EP (1) | EP0028517B2 (ro) |
| JP (1) | JPS5919576B2 (ro) |
| CA (1) | CA1150440A (ro) |
| CS (1) | CS221936B2 (ro) |
| IN (1) | IN151962B (ro) |
| MX (1) | MX155668A (ro) |
| RO (1) | RO82204A (ro) |
| WO (1) | WO1981001291A1 (ro) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883008A (ja) * | 1981-11-13 | 1983-05-18 | Dainippon Ink & Chem Inc | スチレン系樹脂の製造方法 |
| JPS6042414A (ja) * | 1983-08-18 | 1985-03-06 | Mitsui Toatsu Chem Inc | ゴム変性耐衝撃性樹脂の連続的製造方法 |
| JPS6147367A (ja) * | 1984-08-10 | 1986-03-07 | エヌ・ゼツト・フオ−レスト・プロダクツ・リミテツド | キウイフル−ツの包装方法、手段および配置 |
| JPS61136890U (ro) * | 1985-02-15 | 1986-08-26 | ||
| JPS62194585U (ro) * | 1986-05-29 | 1987-12-10 | ||
| JP2895119B2 (ja) * | 1989-12-25 | 1999-05-24 | 三井化学株式会社 | ゴム変性スチレン系樹脂の製造方法 |
| US7754817B2 (en) * | 2005-10-31 | 2010-07-13 | Fina Technology, Inc. | Low temperature initiators for improving the rubber phase volume of HIPS formulations |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3243481A (en) * | 1962-01-08 | 1966-03-29 | Dow Chemical Co | Process for making graft copolymers of vinyl aromatic compounds and stereospecific rubbers |
| GB1165052A (en) * | 1967-06-16 | 1969-09-24 | Denki Kagaku Kogyo Kk | Process for the preparation of Polymers of Styrene and Polybutadiene |
| US3945976A (en) * | 1968-09-30 | 1976-03-23 | Standard Oil Company | Process for producing impact resistant polymer |
| JPS4926951B1 (ro) * | 1970-12-25 | 1974-07-13 | ||
| JPS5229793B2 (ro) * | 1972-10-06 | 1977-08-04 | ||
| US3903202A (en) * | 1973-09-19 | 1975-09-02 | Monsanto Co | Continuous mass polymerization process for polyblends |
| JPS51115591A (en) * | 1975-04-03 | 1976-10-12 | Japan Synthetic Rubber Co Ltd | Preparation of rubber-modified thermoplastic resins |
| JPS5917726B2 (ja) * | 1975-04-10 | 1984-04-23 | 三井東圧化学株式会社 | ゴム変性耐衝撃性重合体の製造方法 |
| US4012462A (en) * | 1975-05-15 | 1977-03-15 | Arco Polymers, Inc. | High impact graft copolymers |
| DE2613352B2 (de) * | 1976-03-29 | 1980-08-07 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von schlagfest modifizierten Styrolpolymerisaten |
| US4187261A (en) * | 1978-05-23 | 1980-02-05 | Standard Oil Company (Indiana) | Vinyl aromatic polymerization process |
| US4254236A (en) * | 1979-03-07 | 1981-03-03 | Monsanto Company | Process for the continuous mass polymerization of polyblends having a bimodal rubber particle size |
| US4255315A (en) * | 1979-03-23 | 1981-03-10 | United States Steel Corporation | Method of making a high impact polystyrene |
-
1979
- 1979-11-01 JP JP54140466A patent/JPS5919576B2/ja not_active Expired
-
1980
- 1980-10-23 IN IN1198/CAL/80A patent/IN151962B/en unknown
- 1980-10-30 RO RO80104330A patent/RO82204A/ro unknown
- 1980-10-30 US US06/269,011 patent/US4378452A/en not_active Expired - Fee Related
- 1980-10-30 WO PCT/JP1980/000270 patent/WO1981001291A1/ja not_active Ceased
- 1980-10-31 CS CS807377A patent/CS221936B2/cs unknown
- 1980-10-31 CA CA000363785A patent/CA1150440A/en not_active Expired
- 1980-10-31 EP EP80303886A patent/EP0028517B2/en not_active Expired
- 1980-10-31 MX MX184580A patent/MX155668A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO82204A (ro) | 1983-08-03 |
| US4378452A (en) | 1983-03-29 |
| WO1981001291A1 (fr) | 1981-05-14 |
| IN151962B (ro) | 1983-09-10 |
| EP0028517B1 (en) | 1984-05-09 |
| EP0028517A1 (en) | 1981-05-13 |
| JPS5919576B2 (ja) | 1984-05-07 |
| JPS5665014A (en) | 1981-06-02 |
| CA1150440A (en) | 1983-07-19 |
| EP0028517B2 (en) | 1989-10-18 |
| MX155668A (es) | 1988-04-12 |
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