DE2422682A1 - Verfahren zur gewinnung von feststoffen aus polymerisat-latex - Google Patents
Verfahren zur gewinnung von feststoffen aus polymerisat-latexInfo
- Publication number
- DE2422682A1 DE2422682A1 DE2422682A DE2422682A DE2422682A1 DE 2422682 A1 DE2422682 A1 DE 2422682A1 DE 2422682 A DE2422682 A DE 2422682A DE 2422682 A DE2422682 A DE 2422682A DE 2422682 A1 DE2422682 A1 DE 2422682A1
- Authority
- DE
- Germany
- Prior art keywords
- latex
- paste
- solids
- polymer
- mixture
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 30
- 239000004816 latex Substances 0.000 title claims description 26
- 239000007787 solid Substances 0.000 title claims description 19
- 238000011084 recovery Methods 0.000 title description 5
- 229920000126 latex Polymers 0.000 claims description 30
- 239000006072 paste Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 16
- 150000002825 nitriles Chemical class 0.000 claims description 15
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 claims description 9
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- 239000004615 ingredient Substances 0.000 claims description 5
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 239000000606 toothpaste Substances 0.000 claims description 2
- 229940034610 toothpaste Drugs 0.000 claims description 2
- 239000000047 product Substances 0.000 description 39
- 229920000642 polymer Polymers 0.000 description 34
- 239000002245 particle Substances 0.000 description 21
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 16
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 14
- 229920003002 synthetic resin Polymers 0.000 description 14
- 239000000057 synthetic resin Substances 0.000 description 14
- 239000000178 monomer Substances 0.000 description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 6
- 239000012736 aqueous medium Substances 0.000 description 6
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 6
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000003995 emulsifying agent Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 150000001993 dienes Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- -1 ethyl isopropenyl Chemical group 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000000379 polymerizing effect Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- OVGRCEFMXPHEBL-UHFFFAOYSA-N 1-ethenoxypropane Chemical compound CCCOC=C OVGRCEFMXPHEBL-UHFFFAOYSA-N 0.000 description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 239000004711 α-olefin Substances 0.000 description 3
- SDJHPPZKZZWAKF-UHFFFAOYSA-N 2,3-dimethylbuta-1,3-diene Chemical compound CC(=C)C(C)=C SDJHPPZKZZWAKF-UHFFFAOYSA-N 0.000 description 2
- WWUVJRULCWHUSA-UHFFFAOYSA-N 2-methyl-1-pentene Chemical compound CCCC(C)=C WWUVJRULCWHUSA-UHFFFAOYSA-N 0.000 description 2
- MHNNAWXXUZQSNM-UHFFFAOYSA-N 2-methylbut-1-ene Chemical compound CCC(C)=C MHNNAWXXUZQSNM-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920003244 diene elastomer Polymers 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 1
- OYUNTGBISCIYPW-UHFFFAOYSA-N 2-chloroprop-2-enenitrile Chemical compound ClC(=C)C#N OYUNTGBISCIYPW-UHFFFAOYSA-N 0.000 description 1
- DDXZFLFMKZXQOT-UHFFFAOYSA-N 2-fluoroprop-2-enenitrile Chemical compound FC(=C)C#N DDXZFLFMKZXQOT-UHFFFAOYSA-N 0.000 description 1
- YOWQWFMSQCOSBA-UHFFFAOYSA-N 2-methoxypropene Chemical compound COC(C)=C YOWQWFMSQCOSBA-UHFFFAOYSA-N 0.000 description 1
- TVONJMOVBKMLOM-UHFFFAOYSA-N 2-methylidenebutanenitrile Chemical compound CCC(=C)C#N TVONJMOVBKMLOM-UHFFFAOYSA-N 0.000 description 1
- OAOZZYBUAWEDRA-UHFFFAOYSA-N 3,4-dimethylidenehexane Chemical compound CCC(=C)C(=C)CC OAOZZYBUAWEDRA-UHFFFAOYSA-N 0.000 description 1
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 1
- IGLWCQMNTGCUBB-UHFFFAOYSA-N 3-methylidenepent-1-ene Chemical compound CCC(=C)C=C IGLWCQMNTGCUBB-UHFFFAOYSA-N 0.000 description 1
- WVLIQUPRRVSTGK-UHFFFAOYSA-N 6-(1,3-dioxopropan-2-yl)pyridine-2-carboxylic acid Chemical compound OC(=O)C1=CC=CC(C(C=O)C=O)=N1 WVLIQUPRRVSTGK-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- XMRUJYGYYCLRGJ-UHFFFAOYSA-N azanium;2-[2-[2-[2-(4-nonylphenoxy)ethoxy]ethoxy]ethoxy]ethyl sulfate Chemical compound [NH4+].CCCCCCCCCC1=CC=C(OCCOCCOCCOCCOS([O-])(=O)=O)C=C1 XMRUJYGYYCLRGJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical class CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- LNMQRPPRQDGUDR-UHFFFAOYSA-N hexyl prop-2-enoate Chemical compound CCCCCCOC(=O)C=C LNMQRPPRQDGUDR-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- AWJZTPWDQYFQPQ-UHFFFAOYSA-N methyl 2-chloroprop-2-enoate Chemical compound COC(=O)C(Cl)=C AWJZTPWDQYFQPQ-UHFFFAOYSA-N 0.000 description 1
- JFHJOMSTWVDDHW-UHFFFAOYSA-N methyl prop-2-enoate;prop-2-enenitrile Chemical compound C=CC#N.COC(=O)C=C JFHJOMSTWVDDHW-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- ULDDEWDFUNBUCM-UHFFFAOYSA-N pentyl prop-2-enoate Chemical compound CCCCCOC(=O)C=C ULDDEWDFUNBUCM-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical class C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical class CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/22—Coagulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S528/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S528/931—Physical treatment of natural rubber or natural rubber containing material or chemical treatment of non-rubber portion thereof, e.g. extraction of rubber from milk weed
- Y10S528/934—Latex
- Y10S528/936—Coagulating
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00229508A US3821348A (en) | 1972-02-25 | 1972-02-25 | Process for recovering nitrile polymer solids from latex |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2422682A1 true DE2422682A1 (de) | 1975-12-11 |
Family
ID=22861541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2422682A Withdrawn DE2422682A1 (de) | 1972-02-25 | 1974-05-10 | Verfahren zur gewinnung von feststoffen aus polymerisat-latex |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3821348A (OSRAM) |
| AT (1) | AT343887B (OSRAM) |
| BE (1) | BE814873A (OSRAM) |
| CH (1) | CH579600A5 (OSRAM) |
| DE (1) | DE2422682A1 (OSRAM) |
| FR (1) | FR2270076B1 (OSRAM) |
| GB (1) | GB1458593A (OSRAM) |
| LU (1) | LU70026A1 (OSRAM) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4006211A (en) * | 1974-02-01 | 1977-02-01 | Standard Oil Company | Method for improving impact strength in high nitrile polymers by stretching and heat setting |
| US3954910A (en) * | 1974-04-12 | 1976-05-04 | The Standard Oil Company | Process for removal and recovery of unreacted monomers from resinous polymers |
| US4007248A (en) * | 1974-09-06 | 1977-02-08 | DSO "Neftochim" | Method of producing delustered polyacrylonitrile fibers |
| DE2917321A1 (de) * | 1979-04-28 | 1980-11-13 | Roehm Gmbh | Verfahren zum abtrennen des polymeren aus einem waessrigen latex |
| US4299952A (en) * | 1980-03-24 | 1981-11-10 | The Dow Chemical Company | Method for recovering synthetic resinous latex solids |
| US4399253A (en) * | 1981-11-23 | 1983-08-16 | The Goodyear Tire & Rubber Company | Novel method of removing residual acrylonitrile from latex systems |
| DE19654169A1 (de) | 1996-12-23 | 1998-06-25 | Basf Ag | Verfahren zur kontinuierlichen Koagulation von wäßrigen Pfropfkautschukdispersionen und Vorrichtung dafür |
| DE19855459A1 (de) | 1998-12-01 | 2000-06-08 | Basf Ag | Verfahren zur Koagulation von Kunststoffdispersionen unter Verwendung einer Vorrichtung mit Scherelementen |
| CN111234051A (zh) * | 2019-08-05 | 2020-06-05 | 海南医学院 | 天然胶乳的一种凝固方法 |
-
1972
- 1972-02-25 US US00229508A patent/US3821348A/en not_active Expired - Lifetime
- 1972-08-31 CH CH1287072A patent/CH579600A5/xx not_active IP Right Cessation
-
1974
- 1974-04-26 GB GB1836474A patent/GB1458593A/en not_active Expired
- 1974-05-08 FR FR7415946A patent/FR2270076B1/fr not_active Expired
- 1974-05-09 LU LU70026A patent/LU70026A1/xx unknown
- 1974-05-10 DE DE2422682A patent/DE2422682A1/de not_active Withdrawn
- 1974-05-10 BE BE144194A patent/BE814873A/xx unknown
- 1974-05-29 AT AT443974A patent/AT343887B/de active
Also Published As
| Publication number | Publication date |
|---|---|
| ATA443974A (de) | 1977-10-15 |
| CH579600A5 (OSRAM) | 1976-09-15 |
| US3821348A (en) | 1974-06-28 |
| LU70026A1 (OSRAM) | 1976-04-13 |
| FR2270076A1 (OSRAM) | 1975-12-05 |
| GB1458593A (en) | 1976-12-15 |
| BE814873A (fr) | 1974-11-12 |
| AT343887B (de) | 1978-06-26 |
| FR2270076B1 (OSRAM) | 1978-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8130 | Withdrawal |