SU1225489A3 - Способ получени 1,4-дикето-пирроло-(3,4-с)-пирролов - Google Patents
Способ получени 1,4-дикето-пирроло-(3,4-с)-пирролов Download PDFInfo
- Publication number
- SU1225489A3 SU1225489A3 SU833595551A SU3595551A SU1225489A3 SU 1225489 A3 SU1225489 A3 SU 1225489A3 SU 833595551 A SU833595551 A SU 833595551A SU 3595551 A SU3595551 A SU 3595551A SU 1225489 A3 SU1225489 A3 SU 1225489A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mixture
- ester
- formula
- mol
- succinic acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 12
- QKWILNTYPDJSME-UHFFFAOYSA-N pyrrolo[3,4-c]pyrrole-3,6-dione Chemical class C1=NC(=O)C2=C1C(=O)N=C2 QKWILNTYPDJSME-UHFFFAOYSA-N 0.000 title 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 26
- 150000002148 esters Chemical class 0.000 claims description 15
- 239000001384 succinic acid Substances 0.000 claims description 11
- -1 methylmercapto Chemical class 0.000 claims description 10
- 150000002825 nitriles Chemical class 0.000 claims description 8
- 125000001424 substituent group Chemical group 0.000 claims description 5
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004305 biphenyl Substances 0.000 claims description 3
- 235000010290 biphenyl Nutrition 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- 125000002541 furyl group Chemical group 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 125000005032 thiofuranyl group Chemical group S1C(=CC=C1)* 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims 3
- 150000001340 alkali metals Chemical class 0.000 claims 3
- 125000004093 cyano group Chemical group *C#N 0.000 claims 3
- 239000002585 base Substances 0.000 claims 2
- 125000004432 carbon atom Chemical group C* 0.000 claims 2
- 230000007062 hydrolysis Effects 0.000 claims 2
- 238000006460 hydrolysis reaction Methods 0.000 claims 2
- 125000001246 bromo group Chemical group Br* 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims 1
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 claims 1
- 150000007524 organic acids Chemical class 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 claims 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- 125000004076 pyridyl group Chemical group 0.000 claims 1
- 150000003333 secondary alcohols Chemical class 0.000 claims 1
- 150000003509 tertiary alcohols Chemical class 0.000 claims 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 57
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 42
- MSXVEPNJUHWQHW-UHFFFAOYSA-N 2-methylbutan-2-ol Chemical compound CCC(C)(C)O MSXVEPNJUHWQHW-UHFFFAOYSA-N 0.000 description 41
- 239000000203 mixture Substances 0.000 description 39
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 37
- 239000000049 pigment Substances 0.000 description 29
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 22
- 229960000583 acetic acid Drugs 0.000 description 17
- 239000011541 reaction mixture Substances 0.000 description 17
- 238000001035 drying Methods 0.000 description 16
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 239000012362 glacial acetic acid Substances 0.000 description 15
- 239000000725 suspension Substances 0.000 description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 10
- 229910052708 sodium Inorganic materials 0.000 description 10
- 239000011734 sodium Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000003756 stirring Methods 0.000 description 7
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 150000002976 peresters Chemical class 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- GOORECODRBZTKF-UHFFFAOYSA-N ditert-butyl butanedioate Chemical compound CC(C)(C)OC(=O)CCC(=O)OC(C)(C)C GOORECODRBZTKF-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- FRDAATYAJDYRNW-UHFFFAOYSA-N 3-methylpentanol-3 Natural products CCC(C)(O)CC FRDAATYAJDYRNW-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BMTAFVWTTFSTOG-UHFFFAOYSA-N Butylate Chemical compound CCSC(=O)N(CC(C)C)CC(C)C BMTAFVWTTFSTOG-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N butyl alcohol Substances CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000004808 2-ethylhexylester Substances 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- MMOGNQIXGGUHEZ-UHFFFAOYSA-N C(C)(=O)OCCCC.[K].[K] Chemical compound C(C)(=O)OCCCC.[K].[K] MMOGNQIXGGUHEZ-UHFFFAOYSA-N 0.000 description 1
- FKLJPTJMIBLJAV-UHFFFAOYSA-N Compound IV Chemical compound O1N=C(C)C=C1CCCCCCCOC1=CC=C(C=2OCCN=2)C=C1 FKLJPTJMIBLJAV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000030555 Pygmy Diseases 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- MWBPRDONLNQCFV-UHFFFAOYSA-N Tri-allate Chemical group CC(C)N(C(C)C)C(=O)SCC(Cl)=C(Cl)Cl MWBPRDONLNQCFV-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- JMLFOZVZGFQYOT-UHFFFAOYSA-N butanedioic acid;sulfuric acid Chemical compound OS(O)(=O)=O.OC(=O)CCC(O)=O JMLFOZVZGFQYOT-UHFFFAOYSA-N 0.000 description 1
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 1
- PJZURRKQOJYGAU-UHFFFAOYSA-N dibutan-2-yl butanedioate Chemical compound CCC(C)OC(=O)CCC(=O)OC(C)CC PJZURRKQOJYGAU-UHFFFAOYSA-N 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- YPLYFEUBZLLLIY-UHFFFAOYSA-N dipropan-2-yl butanedioate Chemical compound CC(C)OC(=O)CCC(=O)OC(C)C YPLYFEUBZLLLIY-UHFFFAOYSA-N 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- LAQPNDIUHRHNCV-UHFFFAOYSA-N isophthalonitrile Chemical compound N#CC1=CC=CC(C#N)=C1 LAQPNDIUHRHNCV-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- VWBWQOUWDOULQN-UHFFFAOYSA-N nmp n-methylpyrrolidone Chemical compound CN1CCCC1=O.CN1CCCC1=O VWBWQOUWDOULQN-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N perisophthalic acid Natural products OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- LCZVKKUAUWQDPX-UHFFFAOYSA-N tert-butyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]ethyl]amino]acetate Chemical compound CC(=O)OC1=CC=CC=C1CN(CC(=O)OC(C)(C)C)CCN(CC(=O)OC(C)(C)C)CC1=CC=CC=C1OC(C)=O LCZVKKUAUWQDPX-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH305482 | 1982-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1225489A3 true SU1225489A3 (ru) | 1986-04-15 |
Family
ID=4247575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833595551A SU1225489A3 (ru) | 1982-05-17 | 1983-05-16 | Способ получени 1,4-дикето-пирроло-(3,4-с)-пирролов |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS58210084A (enrdf_load_stackoverflow) |
| CS (1) | CS236794B2 (enrdf_load_stackoverflow) |
| HU (1) | HU190489B (enrdf_load_stackoverflow) |
| SU (1) | SU1225489A3 (enrdf_load_stackoverflow) |
| ZA (1) | ZA833468B (enrdf_load_stackoverflow) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659775A (en) * | 1984-11-07 | 1987-04-21 | Ciba-Geigy Corporation | Process for the preparation of pyrrolo[3,4-c]pyrroles, and novel pyrrolo[3,4-c]pyrroles |
| US4632704A (en) * | 1985-02-06 | 1986-12-30 | Ciba-Geigy Corporation | Process for the preparation of high yield pigments |
| JP4489196B2 (ja) * | 1998-11-26 | 2010-06-23 | 新日鐵化学株式会社 | 赤色カラーレジストインキ |
| TWI290164B (en) * | 1999-08-26 | 2007-11-21 | Ciba Sc Holding Ag | DPP-containing conjugated polymers and electroluminescent devices |
| JP2006342167A (ja) * | 2000-01-06 | 2006-12-21 | Toray Ind Inc | ジケトピロロ［３，４−ｃ］ピロール誘導体 |
| US20010015154A1 (en) * | 2000-01-27 | 2001-08-23 | Roman Lenz | Ternary pigment compositions |
| AU2002342633A1 (en) * | 2001-09-11 | 2003-03-24 | Ciba Specialty Chemicals Holding Inc. | Process for the preparation of diketopyrrolopyrroles |
| BRPI0415831A (pt) * | 2003-10-23 | 2007-01-02 | Ciba Sc Holding Ag | misturas de pigmento de dicetopirrolopirrol estáveis ao calor |
| JP5082318B2 (ja) * | 2006-07-24 | 2012-11-28 | 東洋インキＳｃホールディングス株式会社 | α型結晶変態ジクロロジケトピロロピロール顔料の製造方法、該方法で製造されたα型結晶変態ジクロロジケトピロロピロール顔料、およびそれを用いた着色組成物 |
| CN101374914B (zh) | 2006-10-06 | 2013-08-14 | 东洋油墨制造株式会社 | α型二酮吡咯并吡咯颜料、使用其的着色组合物、及红色着色膜 |
| WO2008044302A1 (fr) * | 2006-10-12 | 2008-04-17 | Toyo Ink Mfg. Co., Ltd. | Transistor organique |
| KR20100093137A (ko) | 2007-12-26 | 2010-08-24 | 도요 잉키 세이조 가부시끼가이샤 | 적색 칼라필터용 안료 조성물, 그의 제조방법, 그것을 사용한 착색 조성물, 및 컬러필터 |
| JP5331468B2 (ja) | 2008-03-07 | 2013-10-30 | 富士フイルム株式会社 | アゾ顔料組成物、アゾ顔料組成物の製造方法、アゾ顔料組成物を含む分散物、着色組成物及びインクジェット記録用インク |
| JP5292039B2 (ja) | 2008-03-07 | 2013-09-18 | 富士フイルム株式会社 | アゾ顔料組成物、アゾ顔料組成物の製造方法、アゾ顔料組成物を含む分散物、着色組成物及びインクジェット記録用インク |
| US8172910B2 (en) | 2008-09-29 | 2012-05-08 | Fujifilm Corporation | Azo pigment, process for producing azo pigment, and dispersion and coloring composition containing azo pigment |
| JP5481177B2 (ja) | 2008-12-09 | 2014-04-23 | 富士フイルム株式会社 | アゾ顔料、アゾ顔料の製造方法、アゾ顔料を含む分散物、及び着色組成物 |
| CN102597126B (zh) | 2009-08-27 | 2014-12-24 | 富士胶片株式会社 | 二氯二酮吡咯并吡咯颜料、含有所述二氯二酮吡咯并吡咯颜料的着色材料分散体及其制备方法 |
| CN102482511B (zh) | 2009-09-04 | 2013-09-18 | 富士胶片株式会社 | 水性颜料分散体和喷墨记录用水性墨水 |
| KR101587078B1 (ko) | 2009-09-04 | 2016-01-20 | 후지필름 가부시키가이샤 | 수계 안료 분산물 및 잉크젯 기록용 수성 잉크 |
| EP2390283A1 (en) | 2010-05-31 | 2011-11-30 | FUJIFILM Corporation | Azo pigment or tautomer thereof, process for producing same, pigment dispersion, coloring composition, inkjet recording ink, coloring composition for color filter, and color filter |
| KR101942407B1 (ko) | 2011-01-28 | 2019-01-28 | 토요잉크Sc홀딩스주식회사 | 컬러필터용 디케토피롤로피롤계 안료 조성물, 컬러필터용 착색 조성물 및 컬러필터 |
| CA2843396A1 (en) | 2011-07-29 | 2013-02-07 | Fujifilm Corporation | Azo pigment, method for preparing azo pigment, dispersion including azo pigment, coloring composition, and inkjet recording ink |
| JP5712166B2 (ja) | 2011-07-29 | 2015-05-07 | 富士フイルム株式会社 | アゾ顔料を含む分散物、着色組成物及びインクジェット記録用インク並びに分散物の製造方法 |
| CN108239421A (zh) * | 2017-12-25 | 2018-07-03 | 先尼科化工（上海）有限公司 | 一种具有高耐候性橙色二酮吡咯并吡咯颜料及其制备方法 |
-
1983
- 1983-05-13 CS CS337483A patent/CS236794B2/cs unknown
- 1983-05-16 HU HU170683A patent/HU190489B/hu unknown
- 1983-05-16 SU SU833595551A patent/SU1225489A3/ru active
- 1983-05-16 ZA ZA833468A patent/ZA833468B/xx unknown
- 1983-05-17 JP JP58086487A patent/JPS58210084A/ja active Granted
Non-Patent Citations (1)
| Title |
|---|
| Tetrahedron Letters, 1974, 2549-52. * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0425273B2 (enrdf_load_stackoverflow) | 1992-04-30 |
| JPS58210084A (ja) | 1983-12-07 |
| CS236794B2 (cs) | 1985-05-15 |
| HU190489B (hu) | 1986-09-29 |
| ZA833468B (en) | 1984-02-29 |
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