JPS6230211B2 - - Google Patents
Info
- Publication number
- JPS6230211B2 JPS6230211B2 JP56209314A JP20931481A JPS6230211B2 JP S6230211 B2 JPS6230211 B2 JP S6230211B2 JP 56209314 A JP56209314 A JP 56209314A JP 20931481 A JP20931481 A JP 20931481A JP S6230211 B2 JPS6230211 B2 JP S6230211B2
- Authority
- JP
- Japan
- Prior art keywords
- granular
- resin
- weight
- formaldehyde
- hydrochloric acid
- 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
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 139
- 229920005989 resin Polymers 0.000 claims description 121
- 239000011347 resin Substances 0.000 claims description 121
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 99
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 72
- 150000002989 phenols Chemical class 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 57
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 46
- 238000006243 chemical reaction Methods 0.000 claims description 43
- 238000010521 absorption reaction Methods 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000002245 particle Substances 0.000 claims description 38
- WTDFFADXONGQOM-UHFFFAOYSA-N formaldehyde;hydrochloride Chemical compound Cl.O=C WTDFFADXONGQOM-UHFFFAOYSA-N 0.000 claims description 36
- 239000007864 aqueous solution Substances 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 31
- 239000000243 solution Substances 0.000 claims description 30
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 27
- 239000007787 solid Substances 0.000 claims description 25
- 238000000862 absorption spectrum Methods 0.000 claims description 17
- 239000011164 primary particle Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 15
- 229920001568 phenolic resin Polymers 0.000 claims description 15
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 12
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 10
- 238000004811 liquid chromatography Methods 0.000 claims description 9
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 230000004927 fusion Effects 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- 229920001477 hydrophilic polymer Polymers 0.000 claims description 5
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 claims description 5
- 238000000691 measurement method Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 claims description 4
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 2
- YXVFYQXJAXKLAK-UHFFFAOYSA-N biphenyl-4-ol Chemical compound C1=CC(O)=CC=C1C1=CC=CC=C1 YXVFYQXJAXKLAK-UHFFFAOYSA-N 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 125000002256 xylenyl group Chemical class C1(C(C=CC=C1)C)(C)* 0.000 claims description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims 2
- 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 claims 1
- 229940100630 metacresol Drugs 0.000 claims 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 150000002894 organic compounds Chemical class 0.000 claims 1
- 239000000047 product Substances 0.000 description 75
- 238000003756 stirring Methods 0.000 description 31
- 230000009102 absorption Effects 0.000 description 27
- 229920003986 novolac Polymers 0.000 description 23
- 229920003987 resole Polymers 0.000 description 17
- 239000000463 material Substances 0.000 description 15
- 239000000843 powder Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 13
- 239000007795 chemical reaction product Substances 0.000 description 12
- 238000001723 curing Methods 0.000 description 9
- 239000008187 granular material Substances 0.000 description 9
- 239000004312 hexamethylene tetramine Substances 0.000 description 9
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 9
- 239000000835 fiber Substances 0.000 description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 230000009257 reactivity Effects 0.000 description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000012456 homogeneous solution Substances 0.000 description 6
- 239000003377 acid catalyst Substances 0.000 description 5
- 239000010425 asbestos Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000012778 molding material Substances 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 229930040373 Paraformaldehyde Natural products 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 235000013312 flour Nutrition 0.000 description 4
- -1 nitrogen-containing compound Chemical class 0.000 description 4
- 238000000879 optical micrograph Methods 0.000 description 4
- 229920002866 paraformaldehyde Polymers 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000004566 IR spectroscopy Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000000921 elemental analysis Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000013638 trimer Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- UKYGKNHLXAIOQN-UHFFFAOYSA-N 6-methylidenecyclohexa-2,4-dien-1-ol Chemical group OC1C=CC=CC1=C UKYGKNHLXAIOQN-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000010533 azeotropic distillation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011973 solid acid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20931481A JPS58111822A (ja) | 1981-12-25 | 1981-12-25 | 粒状ないし粉末状フエノ−ル・ホルムアルデヒド系樹脂及びその製造法 |
| DE8282111645T DE3273070D1 (en) | 1981-12-25 | 1982-12-15 | Granular or powdery phenol-aldehyde resin and process for production thereof |
| EP82111645A EP0083029B1 (fr) | 1981-12-25 | 1982-12-15 | Résine phénol-aldéhyde granulaire ou pulvérulente et procédé pour sa préparation |
| CA000418105A CA1183636A (fr) | 1981-12-25 | 1982-12-20 | Resine granulaire ou poudreuse de phenol-aldehyde, et methode d'obtention |
| US06/452,833 US4454298A (en) | 1981-12-25 | 1982-12-23 | Granular or powdery phenol-aldehyde resin and process for production thereof |
| KR8205809A KR860002051B1 (ko) | 1981-12-25 | 1982-12-24 | 과립 또는 분말상 포름 알데히드계 수지의 제조방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20931481A JPS58111822A (ja) | 1981-12-25 | 1981-12-25 | 粒状ないし粉末状フエノ−ル・ホルムアルデヒド系樹脂及びその製造法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58111822A JPS58111822A (ja) | 1983-07-04 |
| JPS6230211B2 true JPS6230211B2 (fr) | 1987-07-01 |
Family
ID=16570897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20931481A Granted JPS58111822A (ja) | 1981-12-25 | 1981-12-25 | 粒状ないし粉末状フエノ−ル・ホルムアルデヒド系樹脂及びその製造法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58111822A (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999049530A1 (fr) * | 1998-03-20 | 1999-09-30 | Osaka Gas Company Limited | Separateur pour element a combustible et son procede de production |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516940B (zh) | 2006-10-20 | 2013-03-27 | 爱沃特株式会社 | 粒状酚醛树脂及其制造方法以及粒状酚醛树脂分散液 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133294A (fr) * | 1974-03-23 | 1975-10-22 | ||
| JPS53143963A (en) * | 1977-05-20 | 1978-12-14 | Oki Engineering Kk | Separating method of masked capacitor element |
| JPS54149791A (en) * | 1978-05-17 | 1979-11-24 | Sumitomo Bakelite Co Ltd | Preparation of phenol-formaldehyde resin |
| JPS6230210A (ja) * | 1985-05-17 | 1987-02-09 | ボ−シユ アンド ロ−ムインコ−ポレイテイド | クランク／リンク機構を持つズ−ム式顕微鏡 |
-
1981
- 1981-12-25 JP JP20931481A patent/JPS58111822A/ja active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133294A (fr) * | 1974-03-23 | 1975-10-22 | ||
| JPS53143963A (en) * | 1977-05-20 | 1978-12-14 | Oki Engineering Kk | Separating method of masked capacitor element |
| JPS54149791A (en) * | 1978-05-17 | 1979-11-24 | Sumitomo Bakelite Co Ltd | Preparation of phenol-formaldehyde resin |
| JPS6230210A (ja) * | 1985-05-17 | 1987-02-09 | ボ−シユ アンド ロ−ムインコ−ポレイテイド | クランク／リンク機構を持つズ−ム式顕微鏡 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999049530A1 (fr) * | 1998-03-20 | 1999-09-30 | Osaka Gas Company Limited | Separateur pour element a combustible et son procede de production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58111822A (ja) | 1983-07-04 |
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