GB1585879A - Heterocyclic aromatic polymers of the polymidazopyrrolone class their prepolymers and their preparation - Google Patents
Heterocyclic aromatic polymers of the polymidazopyrrolone class their prepolymers and their preparation Download PDFInfo
- Publication number
- GB1585879A GB1585879A GB3448377A GB3448377A GB1585879A GB 1585879 A GB1585879 A GB 1585879A GB 3448377 A GB3448377 A GB 3448377A GB 3448377 A GB3448377 A GB 3448377A GB 1585879 A GB1585879 A GB 1585879A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prepolymer
- group
- groups
- polyimidazopyrrolone
- radical
- 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
- 229920000642 polymer Polymers 0.000 title claims description 32
- 238000002360 preparation method Methods 0.000 title claims description 28
- 125000006615 aromatic heterocyclic group Chemical group 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims description 36
- 239000000178 monomer Substances 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 15
- -1 polytetrafluoroethylene Polymers 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 12
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 11
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 239000002783 friction material Substances 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 6
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- 238000005984 hydrogenation reaction Methods 0.000 claims description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
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- 125000003277 amino group Chemical group 0.000 claims description 4
- 125000000623 heterocyclic group Chemical group 0.000 claims description 4
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- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 claims description 3
- 125000002252 acyl group Chemical group 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 125000005843 halogen group Chemical group 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 3
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- 125000006239 protecting group Chemical group 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 2
- 125000002947 alkylene group Chemical group 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims description 2
- 150000003840 hydrochlorides Chemical class 0.000 claims description 2
- 125000006551 perfluoro alkylene group Chemical group 0.000 claims description 2
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- 238000006068 polycondensation reaction Methods 0.000 claims description 2
- 230000003763 resistance to breakage Effects 0.000 claims description 2
- 230000004580 weight loss Effects 0.000 claims description 2
- 150000003254 radicals Chemical class 0.000 claims 11
- SLRMQYXOBQWXCR-UHFFFAOYSA-N 2154-56-5 Chemical group [CH2]C1=CC=CC=C1 SLRMQYXOBQWXCR-UHFFFAOYSA-N 0.000 claims 2
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- 239000000047 product Substances 0.000 description 27
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 18
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 16
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 15
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- 238000007254 oxidation reaction Methods 0.000 description 14
- 230000003647 oxidation Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 239000010408 film Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 9
- 238000006722 reduction reaction Methods 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 8
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 7
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- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 238000010531 catalytic reduction reaction Methods 0.000 description 5
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 5
- YCOXTKKNXUZSKD-UHFFFAOYSA-N 3,4-xylenol Chemical compound CC1=CC=C(O)C=C1C YCOXTKKNXUZSKD-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- ZEMNPBSGWVIXTF-UHFFFAOYSA-N 3,4-dinitrobenzoyl chloride Chemical compound [O-][N+](=O)C1=CC=C(C(Cl)=O)C=C1[N+]([O-])=O ZEMNPBSGWVIXTF-UHFFFAOYSA-N 0.000 description 3
- HRMCXDSWURAYFR-UHFFFAOYSA-N 3-phenoxyphthalic acid Chemical compound OC(=O)C1=CC=CC(OC=2C=CC=CC=2)=C1C(O)=O HRMCXDSWURAYFR-UHFFFAOYSA-N 0.000 description 3
- CZGCEKJOLUNIFY-UHFFFAOYSA-N 4-Chloronitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(Cl)C=C1 CZGCEKJOLUNIFY-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000006640 acetylation reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
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- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 3
- 239000012362 glacial acetic acid Substances 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000012286 potassium permanganate Substances 0.000 description 3
- 239000012429 reaction media Substances 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 150000003334 secondary amides Chemical class 0.000 description 3
- VPUPTYYQKWVBMY-UHFFFAOYSA-N 4-(3,4-diacetamidobenzoyl)phthalic acid Chemical compound C1=C(NC(C)=O)C(NC(=O)C)=CC=C1C(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 VPUPTYYQKWVBMY-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 2
- 230000021736 acetylation Effects 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000008064 anhydrides Chemical group 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
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- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
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- XMVJITFPVVRMHC-UHFFFAOYSA-N roxarsone Chemical group OC1=CC=C([As](O)(O)=O)C=C1[N+]([O-])=O XMVJITFPVVRMHC-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
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- SMJAYIGEZAXVIF-UHFFFAOYSA-N (3,4-dimethylphenyl)-(3,4-dinitrophenyl)methanone Chemical compound C1=C(C)C(C)=CC=C1C(=O)C1=CC=C([N+]([O-])=O)C([N+]([O-])=O)=C1 SMJAYIGEZAXVIF-UHFFFAOYSA-N 0.000 description 1
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- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- NYEQKVYBWYJQEG-UHFFFAOYSA-N 3,4-dinitrobenzene-1,2-dicarbonyl chloride Chemical compound [N+](=O)([O-])C1=C(C(C(=O)Cl)=CC=C1[N+](=O)[O-])C(=O)Cl NYEQKVYBWYJQEG-UHFFFAOYSA-N 0.000 description 1
- ZZNPKRPPRPCNND-UHFFFAOYSA-N 4-(3,4-diaminobenzoyl)phthalic acid Chemical compound C1=C(N)C(N)=CC=C1C(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ZZNPKRPPRPCNND-UHFFFAOYSA-N 0.000 description 1
- QNBAODSRRPJGBA-UHFFFAOYSA-N 4-(3,4-dinitrobenzoyl)phthalic acid Chemical compound C1=C(C(O)=O)C(C(=O)O)=CC=C1C(=O)C1=CC=C([N+]([O-])=O)C([N+]([O-])=O)=C1 QNBAODSRRPJGBA-UHFFFAOYSA-N 0.000 description 1
- MWRVRCAFWBBXTL-UHFFFAOYSA-N 4-hydroxyphthalic acid Chemical compound OC(=O)C1=CC=C(O)C=C1C(O)=O MWRVRCAFWBBXTL-UHFFFAOYSA-N 0.000 description 1
- YJDUJNZZWJMRJT-UHFFFAOYSA-N 5-amino-2-benzofuran-1,3-dione Chemical compound NC1=CC=C2C(=O)OC(=O)C2=C1 YJDUJNZZWJMRJT-UHFFFAOYSA-N 0.000 description 1
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
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- CSMWJXBSXGUPGY-UHFFFAOYSA-L sodium dithionate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)S([O-])(=O)=O CSMWJXBSXGUPGY-UHFFFAOYSA-L 0.000 description 1
- 229940075931 sodium dithionate Drugs 0.000 description 1
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- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 1
- 150000000000 tetracarboxylic acids Chemical class 0.000 description 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000005406 washing Methods 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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0666—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0672—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0683—Polycondensates containing six-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0694—Polycondensates containing six-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only two nitrogen atoms in the ring, e.g. polyquinoxalines
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7625201A FR2362181A1 (fr) | 1976-08-19 | 1976-08-19 | Nouveaux polymeres aromatiques heterocycliques de la classe des polyimidazopyrrolones, prepolymeres de ceux-ci et leur preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1585879A true GB1585879A (en) | 1981-03-11 |
Family
ID=9176998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3448377A Expired GB1585879A (en) | 1976-08-19 | 1977-08-17 | Heterocyclic aromatic polymers of the polymidazopyrrolone class their prepolymers and their preparation |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2737522C2 (enExample) |
| FR (1) | FR2362181A1 (enExample) |
| GB (1) | GB1585879A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023347A1 (en) * | 1999-09-29 | 2001-04-05 | Novo Nordisk A/S | Novel aromatic compounds |
| US6590118B1 (en) | 1999-09-29 | 2003-07-08 | Novo Nordisk A/S | Aromatic compounds |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE658494A (enExample) * | 1964-01-20 | 1965-07-19 |
-
1976
- 1976-08-19 FR FR7625201A patent/FR2362181A1/fr active Granted
-
1977
- 1977-08-17 GB GB3448377A patent/GB1585879A/en not_active Expired
- 1977-08-19 DE DE19772737522 patent/DE2737522C2/de not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023347A1 (en) * | 1999-09-29 | 2001-04-05 | Novo Nordisk A/S | Novel aromatic compounds |
| US6590118B1 (en) | 1999-09-29 | 2003-07-08 | Novo Nordisk A/S | Aromatic compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2737522C2 (de) | 1982-03-11 |
| FR2362181B1 (enExample) | 1979-03-02 |
| FR2362181A1 (fr) | 1978-03-17 |
| DE2737522A1 (de) | 1978-02-23 |
| DE2737522B1 (de) | 1981-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |