DE2009047A1 - - Google Patents
Info
- Publication number
- DE2009047A1 DE2009047A1 DE19702009047 DE2009047A DE2009047A1 DE 2009047 A1 DE2009047 A1 DE 2009047A1 DE 19702009047 DE19702009047 DE 19702009047 DE 2009047 A DE2009047 A DE 2009047A DE 2009047 A1 DE2009047 A1 DE 2009047A1
- Authority
- DE
- Germany
- Prior art keywords
- esters
- acids
- unsaturated
- fatty acid
- lower alkanol
- 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.)
- Granted
Links
- 150000002148 esters Chemical class 0.000 claims description 39
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 28
- 229930195729 fatty acid Natural products 0.000 claims description 28
- 239000000194 fatty acid Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 28
- 239000004593 Epoxy Substances 0.000 claims description 21
- 239000002253 acid Substances 0.000 claims description 20
- 150000004665 fatty acids Chemical class 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 150000007513 acids Chemical class 0.000 claims description 15
- -1 fatty acid esters Chemical class 0.000 claims description 13
- 238000004821 distillation Methods 0.000 claims description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 238000006735 epoxidation reaction Methods 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 238000005809 transesterification reaction Methods 0.000 claims description 8
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 5
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims 2
- 102000014160 PTEN Phosphohydrolase Human genes 0.000 claims 1
- 108010011536 PTEN Phosphohydrolase Proteins 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 1
- 229940072033 potash Drugs 0.000 claims 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 1
- 235000015320 potassium carbonate Nutrition 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000004702 methyl esters Chemical class 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 235000014593 oils and fats Nutrition 0.000 description 4
- 239000012074 organic phase Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 235000015278 beef Nutrition 0.000 description 3
- 150000002118 epoxides Chemical class 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003760 tallow Substances 0.000 description 3
- IMYZYCNQZDBZBQ-UHFFFAOYSA-N (+-)-8-(cis-3-octyl-oxiranyl)-octanoic acid Natural products CCCCCCCCC1OC1CCCCCCCC(O)=O IMYZYCNQZDBZBQ-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- MVLVMROFTAUDAG-UHFFFAOYSA-N ethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC MVLVMROFTAUDAG-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 235000019197 fats Nutrition 0.000 description 2
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 2
- 238000004508 fractional distillation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 150000004671 saturated fatty acids Chemical class 0.000 description 2
- 235000003441 saturated fatty acids Nutrition 0.000 description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- BMTAFVWTTFSTOG-UHFFFAOYSA-N Butylate Chemical compound CCSC(=O)N(CC(C)C)CC(C)C BMTAFVWTTFSTOG-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- LVGKNOAMLMIIKO-UHFFFAOYSA-N Elaidinsaeure-aethylester Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC LVGKNOAMLMIIKO-UHFFFAOYSA-N 0.000 description 1
- 239000004165 Methyl ester of fatty acids Substances 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 235000004347 Perilla Nutrition 0.000 description 1
- 244000124853 Perilla frutescens Species 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- QYDYPVFESGNLHU-UHFFFAOYSA-N elaidic acid methyl ester Natural products CCCCCCCCC=CCCCCCCCC(=O)OC QYDYPVFESGNLHU-UHFFFAOYSA-N 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- VLHZUYUOEGBBJB-UHFFFAOYSA-N hydroxy stearic acid Natural products OCCCCCCCCCCCCCCCCCC(O)=O VLHZUYUOEGBBJB-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000005830 nonesterified fatty acids Chemical class 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 235000021003 saturated fats Nutrition 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/38—Compounds containing oxirane rings with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D303/40—Compounds containing oxirane rings with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals by ester radicals
- C07D303/42—Acyclic compounds having a chain of seven or more carbon atoms, e.g. epoxidised fats
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Epoxy Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702009047 DE2009047C2 (de) | 1970-02-26 | 1970-02-26 | Verfahren zur Herstellung von Epoxystearinsäureestern |
| CH1869670A CH567009A5 (enrdf_load_stackoverflow) | 1970-02-26 | 1970-12-17 | |
| NL7100320A NL171705C (nl) | 1970-02-26 | 1971-01-11 | Werkwijze voor het bereiden van epoxystearinezuuresters. |
| BE763422A BE763422A (fr) | 1970-02-26 | 1971-02-24 | Procede pour la preparation d'esters d'acides gras epoxydes |
| AT161871A AT305962B (de) | 1970-02-26 | 1971-02-25 | Verfahren zur Herstellung von Epoxyfettsäureestern |
| FR7106801A FR2079133A5 (enrdf_load_stackoverflow) | 1970-02-26 | 1971-02-26 | |
| CA106405A CA933938A (en) | 1970-02-26 | 1971-02-26 | Process for producing esters of epoxy fatty acids |
| GB2203571A GB1341623A (en) | 1970-02-26 | 1971-04-19 | Production of esters of epoyidised stearic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702009047 DE2009047C2 (de) | 1970-02-26 | 1970-02-26 | Verfahren zur Herstellung von Epoxystearinsäureestern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2009047A1 true DE2009047A1 (enrdf_load_stackoverflow) | 1971-09-02 |
| DE2009047C2 DE2009047C2 (de) | 1982-04-08 |
Family
ID=5763464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702009047 Expired DE2009047C2 (de) | 1970-02-26 | 1970-02-26 | Verfahren zur Herstellung von Epoxystearinsäureestern |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT305962B (enrdf_load_stackoverflow) |
| BE (1) | BE763422A (enrdf_load_stackoverflow) |
| CA (1) | CA933938A (enrdf_load_stackoverflow) |
| CH (1) | CH567009A5 (enrdf_load_stackoverflow) |
| DE (1) | DE2009047C2 (enrdf_load_stackoverflow) |
| FR (1) | FR2079133A5 (enrdf_load_stackoverflow) |
| GB (1) | GB1341623A (enrdf_load_stackoverflow) |
| NL (1) | NL171705C (enrdf_load_stackoverflow) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19542933A1 (de) * | 1995-11-17 | 1997-05-22 | Buna Sow Leuna Olefinverb Gmbh | Glycidester-ester, Verfahren zu ihrer Herstellung und ihre Verwendung |
| BR0215581A (pt) * | 2002-12-06 | 2004-12-21 | Cognis Brasil Ltda | Composições plastificantes para resinas baseadas em nitrocelulose |
| BR0215977C1 (pt) | 2002-12-06 | 2008-06-24 | Cognis Imp Acao E Com Oleoquim | composição de poli(cloreto de vinila) plastificado |
| KR20160030328A (ko) | 2008-02-15 | 2016-03-16 | 유니온 카바이드 케미칼즈 앤드 플라스틱스 테크날러지 엘엘씨 | 프탈레이트-가소화된 조성물을 위한 대체 가소제 시스템 |
| US9422418B2 (en) | 2009-09-30 | 2016-08-23 | Dow Global Technologies Llc | Acetylated monoglyceride of 12-hydroxystearic acid and blends with epoxidized fatty acid esters |
| KR101770005B1 (ko) | 2009-09-30 | 2017-08-21 | 다우 글로벌 테크놀로지스 엘엘씨 | 에폭시화 지방산 에스테르 가소제를 함유하는 열 안정화 중합체 조성물 |
| US8552098B2 (en) | 2009-09-30 | 2013-10-08 | Dow Global Technologies Llc | Purified acetylated derivatives of castor oil and compositions including same |
| BR112012007266B1 (pt) | 2009-09-30 | 2021-03-09 | Dow Global Technologies Llc | composição, composição polimérica e condutor revestido |
| EP2513276A4 (en) | 2009-12-17 | 2016-09-07 | Npc Indústrias Químicas Ltda | METHOD FOR MODIFYING PLANT OILS AND PRIMARY PLASTICIZER FOR VINYL POLYMERS |
| MX2012013102A (es) | 2010-05-10 | 2012-12-17 | Dow Global Technologies Llc | Composiciones de pvc flexibles con plastificantes derivados de fuentes renovables. |
| TW201209168A (en) | 2010-07-28 | 2012-03-01 | Dow Global Technologies Llc | Plasticizers made from oil extracted from microorganisms and polar polymeric compositions comprising the same |
| CA2861332C (en) | 2012-02-08 | 2020-05-05 | Manish Mundra | Plasticizer compositions and methods for making plasticizer compositions |
| MX369103B (es) | 2012-06-22 | 2019-10-29 | Dow Global Technologies Llc | Plastificantes de hidroxiesterearato de poliol acetilado y composiciones poliméricas plastificadas. |
| EP2864406B1 (en) | 2012-06-26 | 2017-03-08 | Dow Global Technologies LLC | Plasticizers and plasticized polymeric compositions |
| US9850366B2 (en) | 2012-10-18 | 2017-12-26 | Dow Global Technologies Llc | Epdxidized fatty acid alkyl ester plasticizers and methods for making epdxidized fatty acid alkyl ester plasticizers |
| JP6189967B2 (ja) | 2012-11-12 | 2017-08-30 | ダウ グローバル テクノロジーズ エルエルシー | エポキシ化脂肪酸アルキルエステルを作製するための方法 |
| MX378691B (es) | 2012-11-12 | 2025-03-11 | Dow Global Technologies Llc | Plastificantes de ester de alquilo de acido graso epoxidado y metodos para fabricar plastificantes de ester de alquilo de acido graso epoxidado. |
| CN103319439A (zh) * | 2013-04-12 | 2013-09-25 | 常州南京大学高新技术研究院 | 一种制备环氧脂肪酸环己酯的方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1030347B (de) * | 1950-08-23 | 1958-05-22 | Fmc Corp | Verfahren zum Epoxydieren von ungesaettigten aliphatischen Saeuren, Estern und Alkoholen |
| DE1135895B (de) * | 1957-11-13 | 1962-09-06 | Union Carbide Corp | Verfahren zur Herstellung eines 2, 3-Epoxyalkancarbonsaeureesters eines Alkenols |
| US3321493A (en) * | 1962-12-20 | 1967-05-23 | British Celanese | Epoxidation |
| US3377304A (en) * | 1959-04-22 | 1968-04-09 | Swift & Co | High oxirane fatty esters |
-
1970
- 1970-02-26 DE DE19702009047 patent/DE2009047C2/de not_active Expired
- 1970-12-17 CH CH1869670A patent/CH567009A5/xx not_active IP Right Cessation
-
1971
- 1971-01-11 NL NL7100320A patent/NL171705C/xx not_active IP Right Cessation
- 1971-02-24 BE BE763422A patent/BE763422A/xx not_active IP Right Cessation
- 1971-02-25 AT AT161871A patent/AT305962B/de not_active IP Right Cessation
- 1971-02-26 FR FR7106801A patent/FR2079133A5/fr not_active Expired
- 1971-02-26 CA CA106405A patent/CA933938A/en not_active Expired
- 1971-04-19 GB GB2203571A patent/GB1341623A/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1030347B (de) * | 1950-08-23 | 1958-05-22 | Fmc Corp | Verfahren zum Epoxydieren von ungesaettigten aliphatischen Saeuren, Estern und Alkoholen |
| DE1135895B (de) * | 1957-11-13 | 1962-09-06 | Union Carbide Corp | Verfahren zur Herstellung eines 2, 3-Epoxyalkancarbonsaeureesters eines Alkenols |
| US3377304A (en) * | 1959-04-22 | 1968-04-09 | Swift & Co | High oxirane fatty esters |
| US3321493A (en) * | 1962-12-20 | 1967-05-23 | British Celanese | Epoxidation |
Non-Patent Citations (1)
| Title |
|---|
| Fette, Seife, Anstrichmittel, 67, 1965, 190-194 * |
Also Published As
| Publication number | Publication date |
|---|---|
| NL171705B (nl) | 1982-12-01 |
| BE763422A (fr) | 1971-08-24 |
| GB1341623A (en) | 1973-12-25 |
| AT305962B (de) | 1973-03-26 |
| NL7100320A (enrdf_load_stackoverflow) | 1971-08-30 |
| CH567009A5 (enrdf_load_stackoverflow) | 1975-09-30 |
| DE2009047C2 (de) | 1982-04-08 |
| FR2079133A5 (enrdf_load_stackoverflow) | 1971-11-05 |
| CA933938A (en) | 1973-09-18 |
| NL171705C (nl) | 1983-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| 8126 | Change of the secondary classification |
Ipc: C07D301/14 |
|
| D2 | Grant after examination | ||
| 8339 | Ceased/non-payment of the annual fee |