DE2235401A1 - Verfahren zum vulkanisieren von kautschuk - Google Patents
Verfahren zum vulkanisieren von kautschukInfo
- Publication number
- DE2235401A1 DE2235401A1 DE19722235401 DE2235401A DE2235401A1 DE 2235401 A1 DE2235401 A1 DE 2235401A1 DE 19722235401 DE19722235401 DE 19722235401 DE 2235401 A DE2235401 A DE 2235401A DE 2235401 A1 DE2235401 A1 DE 2235401A1
- Authority
- DE
- Germany
- Prior art keywords
- sulfur
- vulcanization
- rubber
- vulcanizing
- nitroso
- 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.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims description 49
- 239000005060 rubber Substances 0.000 title claims description 49
- 238000000034 method Methods 0.000 title claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 54
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 53
- 239000011593 sulfur Substances 0.000 claims description 53
- 238000004073 vulcanization Methods 0.000 claims description 53
- 125000000018 nitroso group Chemical group N(=O)* 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 22
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010059 sulfur vulcanization Methods 0.000 claims description 14
- 244000043261 Hevea brasiliensis Species 0.000 claims description 12
- 229920003052 natural elastomer Polymers 0.000 claims description 12
- 229920001194 natural rubber Polymers 0.000 claims description 12
- JSTCPNFNKICNNO-UHFFFAOYSA-N 4-nitrosophenol Chemical compound OC1=CC=C(N=O)C=C1 JSTCPNFNKICNNO-UHFFFAOYSA-N 0.000 claims description 11
- 239000007795 chemical reaction product Substances 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 6
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 239000002274 desiccant Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000004636 vulcanized rubber Substances 0.000 claims description 3
- 150000001721 carbon Chemical class 0.000 claims description 2
- 239000003575 carbonaceous material Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 17
- 239000006229 carbon black Substances 0.000 description 12
- 125000005442 diisocyanate group Chemical group 0.000 description 12
- ROEBHPYGKGTXKM-UHFFFAOYSA-N ethyl n-isocyanatocarbamate Chemical compound CCOC(=O)NN=C=O ROEBHPYGKGTXKM-UHFFFAOYSA-N 0.000 description 12
- 239000012948 isocyanate Substances 0.000 description 12
- 150000002513 isocyanates Chemical class 0.000 description 12
- 125000003118 aryl group Chemical group 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 9
- 239000011787 zinc oxide Substances 0.000 description 9
- 230000002195 synergetic effect Effects 0.000 description 8
- 235000021355 Stearic acid Nutrition 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 7
- 239000008117 stearic acid Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- -1 Thiuram Sulphide Dithiocarbamates Chemical class 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 4
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 150000003573 thiols Chemical class 0.000 description 3
- 229960002447 thiram Drugs 0.000 description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 241001441571 Hiodontidae Species 0.000 description 2
- VLENVEGZSVNZDD-UHFFFAOYSA-N NC(=O)OCC.[S] Chemical compound NC(=O)OCC.[S] VLENVEGZSVNZDD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000012990 dithiocarbamate Substances 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000006232 furnace black Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000002832 nitroso derivatives Chemical class 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical class C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 1
- MHURFZVFYYDDNL-UHFFFAOYSA-N 2,3-dimethyl-4-nitrosophenol Chemical compound CC1=C(C)C(N=O)=CC=C1O MHURFZVFYYDDNL-UHFFFAOYSA-N 0.000 description 1
- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 description 1
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 description 1
- SEEZWGFVHCMHJF-UHFFFAOYSA-N 2-nitrosophenol Chemical class OC1=CC=CC=C1N=O SEEZWGFVHCMHJF-UHFFFAOYSA-N 0.000 description 1
- XGCZABZDVJOWTL-UHFFFAOYSA-N 3-methyl-4-nitrosophenol Chemical compound CC1=CC(O)=CC=C1N=O XGCZABZDVJOWTL-UHFFFAOYSA-N 0.000 description 1
- CUARLQDWYSRQDF-UHFFFAOYSA-N 5-Nitroacenaphthene Chemical compound C1CC2=CC=CC3=C2C1=CC=C3[N+](=O)[O-] CUARLQDWYSRQDF-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- GFQRVGKVOSEDJX-UHFFFAOYSA-N CCCCCCCCCCCCCCCCCC(O)=O.[O-2].O.S.[Zn+2] Chemical compound CCCCCCCCCCCCCCCCCC(O)=O.[O-2].O.S.[Zn+2] GFQRVGKVOSEDJX-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 244000287680 Garcinia dulcis Species 0.000 description 1
- 241001358279 Malaya Species 0.000 description 1
- DDNRCFPUXYQECR-UHFFFAOYSA-J N,N-dimethylcarbamodithioate tin(4+) Chemical compound [Sn+4].CN(C)C([S-])=S.CN(C)C([S-])=S.CN(C)C([S-])=S.CN(C)C([S-])=S DDNRCFPUXYQECR-UHFFFAOYSA-J 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XAQHXGSHRMHVMU-UHFFFAOYSA-N [S].[S] Chemical compound [S].[S] XAQHXGSHRMHVMU-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- VAAVYQQCYYPTGJ-UHFFFAOYSA-L bis(carbamothioylsulfanyl)lead Chemical compound [Pb+2].NC([S-])=S.NC([S-])=S VAAVYQQCYYPTGJ-UHFFFAOYSA-L 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- RJLZSKYNYLYCNY-UHFFFAOYSA-N ethyl carbamate;isocyanic acid Chemical compound N=C=O.CCOC(N)=O RJLZSKYNYLYCNY-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000002923 oximes Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000006235 reinforcing carbon black Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- ABBFTEOOAGLOID-UHFFFAOYSA-J tris(carbamothioylsulfanyl)stannyl carbamodithioate Chemical compound [Sn+4].NC([S-])=S.NC([S-])=S.NC([S-])=S.NC([S-])=S ABBFTEOOAGLOID-UHFFFAOYSA-J 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/32—Compounds containing nitrogen bound to oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3384371A GB1402852A (en) | 1971-07-19 | 1971-07-19 | Vulcanizing rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2235401A1 true DE2235401A1 (de) | 1973-02-08 |
Family
ID=10358165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722235401 Pending DE2235401A1 (de) | 1971-07-19 | 1972-07-19 | Verfahren zum vulkanisieren von kautschuk |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS4834953A (enExample) |
| AU (1) | AU4455972A (enExample) |
| BE (1) | BE786472A (enExample) |
| DE (1) | DE2235401A1 (enExample) |
| FR (1) | FR2146794A5 (enExample) |
| GB (1) | GB1402852A (enExample) |
| IT (1) | IT962902B (enExample) |
| SU (1) | SU515464A3 (enExample) |
-
1971
- 1971-07-19 GB GB3384371A patent/GB1402852A/en not_active Expired
-
1972
- 1972-07-14 AU AU44559/72A patent/AU4455972A/en not_active Expired
- 1972-07-15 IT IT2706172A patent/IT962902B/it active
- 1972-07-18 JP JP7195872A patent/JPS4834953A/ja active Pending
- 1972-07-18 FR FR7225806A patent/FR2146794A5/fr not_active Expired
- 1972-07-19 SU SU1812198A patent/SU515464A3/ru active
- 1972-07-19 DE DE19722235401 patent/DE2235401A1/de active Pending
- 1972-07-19 BE BE786472A patent/BE786472A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE786472A (fr) | 1972-11-16 |
| JPS4834953A (enExample) | 1973-05-23 |
| IT962902B (it) | 1973-12-31 |
| GB1402852A (en) | 1975-08-13 |
| FR2146794A5 (enExample) | 1973-03-02 |
| AU4455972A (en) | 1974-01-17 |
| SU515464A3 (ru) | 1976-05-25 |
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