SU822756A3 - Способ получени поли-п-фенилентерефталамида - Google Patents
Способ получени поли-п-фенилентерефталамида Download PDFInfo
- Publication number
- SU822756A3 SU822756A3 SU762324504A SU2324504A SU822756A3 SU 822756 A3 SU822756 A3 SU 822756A3 SU 762324504 A SU762324504 A SU 762324504A SU 2324504 A SU2324504 A SU 2324504A SU 822756 A3 SU822756 A3 SU 822756A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- calcium chloride
- reaction
- poly
- phenylene terephthalamide
- methylpyrrolidone
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- WRDNCFQZLUCIRH-UHFFFAOYSA-N 4-(7-azabicyclo[2.2.1]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=C1C=C2 WRDNCFQZLUCIRH-UHFFFAOYSA-N 0.000 title claims abstract description 18
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 29
- 239000001110 calcium chloride Substances 0.000 claims abstract description 29
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 29
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- LXEJRKJRKIFVNY-UHFFFAOYSA-N terephthaloyl chloride Chemical compound ClC(=O)C1=CC=C(C(Cl)=O)C=C1 LXEJRKJRKIFVNY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011541 reaction mixture Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 abstract description 7
- 239000002904 solvent Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 18
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 4
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- -1 polyp-phenylene terephthalamide Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000012429 reaction media Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- HIKUCVORZZXYNF-UHFFFAOYSA-L calcium;1-methylpyrrolidin-2-one;dichloride Chemical compound Cl[Ca]Cl.CN1CCCC1=O HIKUCVORZZXYNF-UHFFFAOYSA-L 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 235000014366 other mixer Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- ONSIBMFFLJKTPT-UHFFFAOYSA-L zinc;2,3,4,5,6-pentachlorobenzenethiolate Chemical compound [Zn+2].[S-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl.[S-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl ONSIBMFFLJKTPT-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/32—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids from aromatic diamines and aromatic dicarboxylic acids with both amino and carboxylic groups aromatically bound
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7502060,A NL157327C (nl) | 1975-02-21 | 1975-02-21 | Werkwijze ter bereiding van poly-p-fenyleentereftaalamide. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU822756A3 true SU822756A3 (ru) | 1981-04-15 |
Family
ID=19823227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762324504A SU822756A3 (ru) | 1975-02-21 | 1976-02-20 | Способ получени поли-п-фенилентерефталамида |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4308374A (enExample) |
| JP (1) | JPS6048537B2 (enExample) |
| BR (1) | BR7601070A (enExample) |
| DE (2) | DE2661036C2 (enExample) |
| FR (1) | FR2301548A1 (enExample) |
| GB (1) | GB1547802A (enExample) |
| IT (1) | IT1055364B (enExample) |
| NL (1) | NL157327C (enExample) |
| SU (1) | SU822756A3 (enExample) |
Families Citing this family (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910894B2 (ja) * | 1975-11-04 | 1984-03-12 | ユニチカ株式会社 | ホウコウゾクポリアミドハクマクノブツリテキセイシツノ カイリヨウホウ |
| JPS53294A (en) * | 1976-06-23 | 1978-01-05 | Teijin Ltd | Preparation of aromatic polyamide with high degree of polymerization |
| JPS5311994A (en) * | 1976-07-19 | 1978-02-02 | Borisobuichi Sokorofu Refu | Method of making ppphenylene terephthalamide polymer |
| FR2417518A2 (fr) * | 1978-02-20 | 1979-09-14 | Rhone Poulenc Textile | Procede d'obtention en continu de polyamides derives de la paraphenylenediamine |
| FR2388844A1 (fr) * | 1977-04-27 | 1978-11-24 | Rhone Poulenc Textile | Procede d'obtention en discontinu de polymeres derives de para-phenylenediamine |
| US4297479A (en) | 1977-04-27 | 1981-10-27 | Rhone-Poulenc-Textile | Process for the continuous production of aromatic polyamides in a mixture of calcium chloride and N-methylpyrrolidone-2 |
| US4389521A (en) * | 1979-03-26 | 1983-06-21 | Teijin Limited | Process for preparing a cyclic amide polar solvent composition |
| DE2940447C2 (de) * | 1979-10-05 | 1982-03-18 | Forschungsinstitut Berghof GmbH, 7400 Tübingen | Integralasymmetrische Ultrafiltrationsmembran |
| US4511709A (en) * | 1981-10-20 | 1985-04-16 | Korea Advanced Institute Of Science And Technology | Wholly aromatic or aliphatic aromatic block copolyamides and process therefor |
| US4514310A (en) * | 1982-08-31 | 1985-04-30 | Mobil Oil Corporation | High temperature stable fluids for wellbore treatment containing non-aqueous solvents |
| US4498994A (en) * | 1982-08-31 | 1985-02-12 | Mobil Oil Corporation | High temperature stable drilling fluids containing non-aqueous solvents |
| NL8402192A (nl) * | 1984-07-11 | 1986-02-03 | Akzo Nv | Werkwijze voor het vervaardigen van draden uit aromatische polyamiden. |
| NL8601159A (nl) * | 1986-05-06 | 1987-12-01 | Akzo Nv | Vezels en garens uit een mengsel van aromatische polyamiden. |
| US4921900A (en) * | 1988-12-14 | 1990-05-01 | E. I. Du Pont De Nemours And Company | Stable solutions of poly(paraphenylene terephthalamide) acid crumb |
| US5094913A (en) | 1989-04-13 | 1992-03-10 | E. I. Du Pont De Nemours And Company | Oriented, shaped articles of pulpable para-aramid/meta-aramid blends |
| US5202184A (en) * | 1989-06-05 | 1993-04-13 | E. I. Du Pont De Nemours And Company | Method and apparatus for producing para-aramid pulp and pulp produced thereby |
| US5247056A (en) * | 1989-11-03 | 1993-09-21 | E. I. Du Pont De Nemours And Company | Para-phenylene diamine polymer color improvement |
| US5057602A (en) * | 1989-11-03 | 1991-10-15 | E. I. Dupont De Nemours And Company | Para-phenylene diamine polymer color improvement with sequestering agent |
| JP2986210B2 (ja) * | 1991-02-14 | 1999-12-06 | イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー | Ｃａ▲上＋▼▲上＋▼およびＣｌ▲上−▼の含有量の低いパラ−アラミドの製造方法 |
| WO1992016589A1 (en) * | 1991-03-25 | 1992-10-01 | E.I. Du Pont De Nemours And Company | Electroless plated aramid surfaces |
| US5302415A (en) * | 1992-12-08 | 1994-04-12 | E. I. Du Pont De Nemours And Company | Electroless plated aramid surfaces and a process for making such surfaces |
| MX9603317A (es) * | 1994-02-11 | 1997-02-28 | Akzo Nobel Nv | Procedimiento para la preparacion intermitente de poli-p-fenilentereftalamida. |
| US5581998A (en) * | 1994-06-22 | 1996-12-10 | Craig; Joe D. | Biomass fuel turbine combuster |
| US5666890A (en) * | 1994-06-22 | 1997-09-16 | Craig; Joe D. | Biomass gasification system and method |
| AU704883B2 (en) * | 1995-03-03 | 1999-05-06 | Akzo Nobel N.V. | Centrifugal spinning process for spinnable solutions |
| US5945054A (en) * | 1995-10-24 | 1999-08-31 | Akzo Nobel N.V. | Process for manufacturing filaments from an optically anisotropic spinning solution |
| NL1002882C2 (nl) * | 1996-04-17 | 1997-10-21 | Akzo Nobel Nv | Zwavelhoudend p-aramide garen. |
| DE69701071T2 (de) * | 1996-08-09 | 2000-07-06 | Akzo Nobel N.V., Arnheim/Arnhem | Garn aus para-aromatischem Polyamid mit niedriger linearer Dichte und Verfahren zu seiner Herstellung |
| US6534426B1 (en) | 2000-01-14 | 2003-03-18 | E. I. Du Pont De Nemours And Company | Knife-stab-resistant composite |
| US6610617B2 (en) | 2001-04-12 | 2003-08-26 | E. I. Du Pont De Nemours And Company | Ballistic resistant article |
| US6669741B2 (en) | 2001-09-21 | 2003-12-30 | E. I. Du Pont De Nemours And Company | Process for restoring the natural appearance of para-aramid clothing |
| US6626963B2 (en) | 2001-09-21 | 2003-09-30 | E. I. Du Pont De Nemours And Company | Process for restoring the appearance of pigmented or dyed para-aramid fabric |
| RU2220157C2 (ru) * | 2001-10-04 | 2003-12-27 | Иванов Владимир Михайлович | Способ получения поли-парафенилентерефталамида и его сополимеров |
| JP4786546B2 (ja) * | 2003-11-21 | 2011-10-05 | テイジン・アラミド・ビー．ブイ． | Ｄａｐｂｉ含有アラミドクラムを製造する方法 |
| US20060113700A1 (en) * | 2004-12-01 | 2006-06-01 | Hartzler Jon D | Continuous processes for making composite fibers |
| RU2382126C2 (ru) * | 2005-07-05 | 2010-02-20 | Колон Индастриз, Инк. | Способ получения нити из ароматического полиамида |
| KR100749964B1 (ko) * | 2005-07-06 | 2007-08-16 | 주식회사 코오롱 | 전방향족 폴리아미드 필라멘트 및 그의 제조방법 |
| US20070060712A1 (en) * | 2005-09-15 | 2007-03-15 | General Electric Company | Thermoplastic composition with improved wear properties and method for making thereof |
| BRPI0816562A2 (pt) * | 2007-10-19 | 2015-04-07 | Du Pont | Composição de poliacetal, método para a fabricação da composição de polímero de poliacetal e artigo moldado |
| US20090142567A1 (en) * | 2007-12-03 | 2009-06-04 | E.I. Du Pont De Nemours And Company | Thermally conductive aramid-based dielectric substrates for printed circuit boards and integrated circuit chip packaging |
| CN104479128B (zh) * | 2014-12-17 | 2016-07-13 | 清华大学 | 一种利用乳液法由对苯二胺和对苯二酰氯缩聚制备对位芳纶的方法 |
| US11618996B2 (en) | 2016-10-27 | 2023-04-04 | Dupont Safety & Construction, Inc. | Fabric having a cut-resistant coating comprising para-aramid particles |
| WO2019195689A1 (en) | 2018-04-06 | 2019-10-10 | E. I. Du Pont De Nemours And Company | Additive manufacturing compositions |
| US11078627B2 (en) | 2018-08-14 | 2021-08-03 | Dupont Safety & Construction, Inc. | High tensile strength paper suitable for use in electrochemical cells |
| CN112201903A (zh) * | 2019-11-26 | 2021-01-08 | 中蓝晨光化工研究设计院有限公司 | 一种基于高性能聚芳酰胺锂电池隔膜涂层聚合溶液及其制备方法和应用 |
| US20210296685A1 (en) | 2020-03-17 | 2021-09-23 | Dupont Safety & Construction, Inc. | Solid-state composite electrolytes comprising aramid polymer fibrils |
| US11578461B2 (en) | 2020-03-17 | 2023-02-14 | Dupont Safety & Construction, Inc. | Papers comprising aerogel powder and aramid polymer fibrils |
| WO2022031302A1 (en) | 2020-08-04 | 2022-02-10 | Dupont Safety & Construction, Inc. | Paper comprising aramid pulp suitable for electrochemical cells, and electrochemical cells made therefrom |
| CN112940246B (zh) * | 2021-04-15 | 2022-09-06 | 中芳特纤股份有限公司 | 一种聚对苯二甲酰对苯二胺树脂的高效节能洗涤方法 |
| EP4413202A1 (en) | 2021-10-07 | 2024-08-14 | DuPont Safety & Construction, Inc. | Nonwoven sheet material comprising a substrate and applied fibril covering |
| CN114316257B (zh) * | 2021-12-17 | 2023-12-01 | 山东聚芳新材料股份有限公司 | 一种改性对位芳纶原液及其制备方法和应用 |
| CN116023653B (zh) * | 2023-03-29 | 2023-06-16 | 中化高性能纤维材料有限公司 | 一种连续化制备对位芳纶聚合体的方法和系统 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL108288C (enExample) * | 1957-02-28 | |||
| US3063966A (en) * | 1958-02-05 | 1962-11-13 | Du Pont | Process of making wholly aromatic polyamides |
| BE565269A (enExample) * | 1957-03-27 | |||
| NL128614C (enExample) * | 1962-09-11 | |||
| NL128396C (enExample) * | 1962-09-11 | |||
| US3354125A (en) * | 1963-07-29 | 1967-11-21 | Monsanto Co | Polymers from diaminobenzanilides |
| CA928440A (en) | 1967-12-27 | 1973-06-12 | I. Bair Thomas | Fibres of aromatic para-oriented polyterephthalamides |
| US3817941A (en) * | 1967-12-27 | 1974-06-18 | Du Pont | Wholly aromatic carbocyclic poly-carbonamide fiber having initial modulus in excess of 170 gpd and orientation angle of up to 40 grad |
| JPS5012006B1 (enExample) * | 1968-06-12 | 1975-05-08 | ||
| GB1283065A (en) | 1968-06-12 | 1972-07-26 | Du Pont | Aromatic polyamide fibers |
| US3673143A (en) * | 1970-06-24 | 1972-06-27 | Du Pont | Optically anisotropic spinning dopes of polycarbonamides |
| IL39187A (en) * | 1971-04-28 | 1976-02-29 | Du Pont | Polyamide fibers and films and their preparation |
| US3944522A (en) * | 1971-07-02 | 1976-03-16 | Toray Industries, Inc. | Aromatic polyhydrazide fiber of high modulus and high tenacity |
| US3869429A (en) * | 1971-08-17 | 1975-03-04 | Du Pont | High strength polyamide fibers and films |
| DE2229429A1 (de) * | 1972-06-16 | 1974-01-10 | Basf Ag | Lineare aromatische polyamide |
| US3850888A (en) * | 1972-12-07 | 1974-11-26 | Du Pont | Process for producing poly-p-phenylene terephthalamide from solution of p-phenylene diamine and molten terephthaloyl chloride |
| JPS49122594A (enExample) | 1973-03-29 | 1974-11-22 | ||
| JPS5344957B2 (enExample) * | 1973-12-28 | 1978-12-02 | ||
| JPS5130896A (en) * | 1974-09-09 | 1976-03-16 | Sumitomo Chemical Co | Hokozokuhoriamido no seizohoho |
| DE2556883C2 (de) * | 1974-12-27 | 1981-11-26 | Teijin Ltd., Osaka | Aromatische Copolyamide und deren Verwendung zur Herstellung von Fasern, Fäden, Filmen und Folien |
| JPS53294A (en) * | 1976-06-23 | 1978-01-05 | Teijin Ltd | Preparation of aromatic polyamide with high degree of polymerization |
| US4169932A (en) * | 1976-07-26 | 1979-10-02 | Petrukhin Vyacheslav S | Method of producing poly-p-phenyleneterephthalamide or its copolymers |
| JPS54130493A (en) | 1978-03-31 | 1979-10-09 | Sumitomo Precision Prod Co | Ozonizer |
-
1975
- 1975-02-21 NL NLAANVRAGE7502060,A patent/NL157327C/xx not_active IP Right Cessation
-
1976
- 1976-02-12 DE DE2661036A patent/DE2661036C2/de not_active Expired
- 1976-02-12 DE DE2605531A patent/DE2605531C2/de not_active Expired
- 1976-02-19 GB GB6542/76A patent/GB1547802A/en not_active Expired
- 1976-02-19 IT IT20343/76A patent/IT1055364B/it active
- 1976-02-19 FR FR7604576A patent/FR2301548A1/fr active Granted
- 1976-02-20 JP JP51017849A patent/JPS6048537B2/ja not_active Expired
- 1976-02-20 BR BR7601070A patent/BR7601070A/pt unknown
- 1976-02-20 SU SU762324504A patent/SU822756A3/ru active
-
1979
- 1979-11-15 US US06/094,589 patent/US4308374A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE2605531A1 (de) | 1976-09-02 |
| DE2605531C2 (de) | 1986-03-13 |
| NL157327C (nl) | 1984-05-16 |
| FR2301548B1 (enExample) | 1980-09-26 |
| GB1547802A (en) | 1979-06-27 |
| FR2301548A1 (fr) | 1976-09-17 |
| JPS6048537B2 (ja) | 1985-10-28 |
| US4308374A (en) | 1981-12-29 |
| JPS51109099A (enExample) | 1976-09-27 |
| DE2661036C2 (de) | 1992-07-23 |
| NL157327B (nl) | 1978-07-17 |
| NL7502060A (nl) | 1976-08-24 |
| BR7601070A (pt) | 1976-09-14 |
| IT1055364B (it) | 1981-12-21 |
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