DE1694673C3 - Verfahren zur Herstellung von feinteiligen organischen thermoplastischen Polymerisaten - Google Patents
Verfahren zur Herstellung von feinteiligen organischen thermoplastischen PolymerisatenInfo
- Publication number
- DE1694673C3 DE1694673C3 DE1694673A DEN0028060A DE1694673C3 DE 1694673 C3 DE1694673 C3 DE 1694673C3 DE 1694673 A DE1694673 A DE 1694673A DE N0028060 A DEN0028060 A DE N0028060A DE 1694673 C3 DE1694673 C3 DE 1694673C3
- Authority
- DE
- Germany
- Prior art keywords
- water
- zone
- polymer
- dispersing
- dispersion
- 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
- 238000000034 method Methods 0.000 title claims description 21
- 229920001169 thermoplastic Polymers 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 229920000642 polymer Polymers 0.000 claims description 42
- 239000006185 dispersion Substances 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 description 32
- 239000002245 particle Substances 0.000 description 31
- 239000000047 product Substances 0.000 description 30
- 239000002002 slurry Substances 0.000 description 29
- -1 polyoxypropylene Polymers 0.000 description 24
- 238000005406 washing Methods 0.000 description 20
- 239000004698 Polyethylene Substances 0.000 description 19
- 229920000573 polyethylene Polymers 0.000 description 19
- 238000000926 separation method Methods 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 14
- 239000005977 Ethylene Substances 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000001035 drying Methods 0.000 description 12
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229920001400 block copolymer Polymers 0.000 description 8
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- 239000000706 filtrate Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000012527 feed solution Substances 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 4
- 210000000056 organ Anatomy 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 229920013716 polyethylene resin Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 229920006163 vinyl copolymer Polymers 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- RNDVGJZUHCKENF-UHFFFAOYSA-N 5-hexen-2-one Chemical compound CC(=O)CCC=C RNDVGJZUHCKENF-UHFFFAOYSA-N 0.000 description 1
- 229920005682 EO-PO block copolymer Polymers 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229920002319 Poly(methyl acrylate) Polymers 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- WNMORWGTPVWAIB-UHFFFAOYSA-N ethenyl 2-methylpropanoate Chemical compound CC(C)C(=O)OC=C WNMORWGTPVWAIB-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- HVAMZGADVCBITI-UHFFFAOYSA-M pent-4-enoate Chemical compound [O-]C(=O)CCC=C HVAMZGADVCBITI-UHFFFAOYSA-M 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/16—Powdering or granulating by coagulating dispersions
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43369065A | 1965-02-18 | 1965-02-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1694673A1 DE1694673A1 (de) | 1971-07-01 |
| DE1694673B2 DE1694673B2 (de) | 1977-12-29 |
| DE1694673C3 true DE1694673C3 (de) | 1978-08-31 |
Family
ID=23721175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1694673A Expired DE1694673C3 (de) | 1965-02-18 | 1966-02-16 | Verfahren zur Herstellung von feinteiligen organischen thermoplastischen Polymerisaten |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3432483A (cg-RX-API-DMAC7.html) |
| BE (1) | BE676722A (cg-RX-API-DMAC7.html) |
| CH (1) | CH473178A (cg-RX-API-DMAC7.html) |
| DE (1) | DE1694673C3 (cg-RX-API-DMAC7.html) |
| FR (1) | FR1469751A (cg-RX-API-DMAC7.html) |
| GB (1) | GB1062364A (cg-RX-API-DMAC7.html) |
| NL (1) | NL6602120A (cg-RX-API-DMAC7.html) |
| SE (1) | SE329001B (cg-RX-API-DMAC7.html) |
Families Citing this family (49)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3627733A (en) * | 1964-06-10 | 1971-12-14 | Asahi Chemical Ind | Method for particularizing thermoplastic polyesters |
| US3879324A (en) * | 1968-04-29 | 1975-04-22 | Robert D Timmons | Solvent-free, aqueous resin dispersion |
| US3879327A (en) * | 1969-04-18 | 1975-04-22 | Exxon Research Engineering Co | Formation of a latex from an organic solvent dispersion of a water insoluble polymer |
| US3622555A (en) * | 1969-06-02 | 1971-11-23 | Dow Chemical Co | Method for producing low bulk density, free-flowing polymer powders |
| JPS497095B1 (cg-RX-API-DMAC7.html) * | 1970-09-25 | 1974-02-18 | ||
| JPS5116533B1 (cg-RX-API-DMAC7.html) * | 1971-06-01 | 1976-05-25 | ||
| BE789808A (fr) * | 1971-10-12 | 1973-04-06 | Crown Zellerbach Int Inc | Pate a papier de polyolefine ayant de meilleures proprietes d'egouttageet procede pour la produire |
| US3968067A (en) * | 1972-02-15 | 1976-07-06 | Exxon Research And Engineering Company | Process for preparing high polymer latices from organic solvent dispersions |
| US4166091A (en) * | 1973-04-17 | 1979-08-28 | E. I. Du Pont De Nemours And Company | Production of plexifilament strands |
| US4037040A (en) * | 1974-08-14 | 1977-07-19 | Celanese Corporation | Refluxing water-in-oil emulsion process for preparing water-soluble polyelectrolyte particles |
| US4123403A (en) * | 1977-06-27 | 1978-10-31 | The Dow Chemical Company | Continuous process for preparing aqueous polymer microsuspensions |
| US4104453A (en) * | 1977-07-05 | 1978-08-01 | National Distillers And Chemical Corporation | Melt dispersion saponification of ethylene-vinyl acetate polymer |
| US4151135A (en) * | 1977-08-15 | 1979-04-24 | National Distillers And Chemical Corporation | Processes for producing dry powders from tacky polymers via dispersion of same in water with dispersants convertible to parting agents |
| JPS55105517A (en) * | 1979-02-06 | 1980-08-13 | Du Pont | Method of melting and cutting ethylene polymer |
| US4252969A (en) * | 1979-09-27 | 1981-02-24 | National Distillers And Chemical Corp. | Process for regulating particle size of finely divided thermoplastic resins |
| DE3037575C2 (de) * | 1980-10-04 | 1982-12-02 | Basf Farben + Fasern Ag, 2000 Hamburg | Verfahren zum Herstellen von wäßrigen Kunstharzdispersionen |
| US4389506A (en) * | 1981-06-29 | 1983-06-21 | E. I. Du Pont De Nemours And Company | Polyvinyl alcohol dust suppression by admixing polyglycol |
| US5338609A (en) * | 1991-10-30 | 1994-08-16 | Quantum Chemical Corporation | Fractional melt flow rate polymer powders and process for their preparation |
| US5209977A (en) * | 1991-11-26 | 1993-05-11 | Quantum Chemical Corporation | Crosslinkable ethylene copolymer powders and processes |
| US5246779A (en) * | 1992-08-10 | 1993-09-21 | Quantum Chemical Corporation | Microfine propylene polymer powders and process for their preparation |
| EP0814485B1 (en) | 1996-06-21 | 2002-09-25 | PIRELLI CAVI E SISTEMI S.p.A. | Water tree resistant insulating composition |
| US6451265B1 (en) | 1997-01-21 | 2002-09-17 | Alfonso M. Misuraca | Polymer activation assembly with self compensating high shear activation nozzle |
| US6281155B1 (en) | 1999-11-19 | 2001-08-28 | Equistar Chemicals, L.P. | Supported olefin polymerization catalysts |
| GB0004898D0 (en) * | 2000-03-02 | 2000-04-19 | Ici Plc | Extrusion process |
| US6793866B2 (en) * | 2001-10-23 | 2004-09-21 | Equistar Chemicals, Lp | Process for producing bonded activated carbon structures and articles |
| US6835311B2 (en) | 2002-01-31 | 2004-12-28 | Koslow Technologies Corporation | Microporous filter media, filtration systems containing same, and methods of making and using |
| US6914097B2 (en) * | 2002-12-17 | 2005-07-05 | Equistar Chemicals Lp | Process for producing acid functionalized polyolefins and products |
| US20040249071A1 (en) * | 2003-06-05 | 2004-12-09 | Mcfaddin Douglas C. | Adhesive blend powders |
| US7456241B2 (en) * | 2003-06-05 | 2008-11-25 | Equistar Chemicals, Lp | Microfine adhesive powders and process |
| US8722787B2 (en) | 2003-08-25 | 2014-05-13 | Dow Global Technologies Llc | Coating composition and articles made therefrom |
| US8946329B2 (en) | 2003-08-25 | 2015-02-03 | Dow Global Technologies Llc | Coating compositions |
| US7763676B2 (en) | 2003-08-25 | 2010-07-27 | Dow Global Technologies Inc. | Aqueous polymer dispersions and products from those dispersions |
| US7803865B2 (en) | 2003-08-25 | 2010-09-28 | Dow Global Technologies Inc. | Aqueous dispersion, its production method, and its use |
| US8349929B2 (en) * | 2003-08-25 | 2013-01-08 | Dow Global Technologies Llc | Coating composition and articles made therefrom |
| US8158711B2 (en) * | 2003-08-25 | 2012-04-17 | Dow Global Technologies Llc | Aqueous dispersion, its production method, and its use |
| US8357749B2 (en) * | 2003-08-25 | 2013-01-22 | Dow Global Technologies Llc | Coating composition and articles made therefrom |
| US9169406B2 (en) | 2003-08-25 | 2015-10-27 | Dow Global Technologies Llc | Coating compositions |
| US8779053B2 (en) | 2003-08-25 | 2014-07-15 | Dow Global Technologies Llc | Coating compositions |
| JP2005068203A (ja) * | 2003-08-28 | 2005-03-17 | Nitto Denko Corp | ポリオレフィン系樹脂発泡体用組成物とその発泡体、および発泡体の製造方法 |
| US7691953B2 (en) * | 2007-06-27 | 2010-04-06 | H R D Corporation | System and process for production of polyvinyl chloride |
| US20090166291A1 (en) * | 2007-12-26 | 2009-07-02 | Jackson Paul H | Filtration of an aqueous process stream in polymer based particle production |
| WO2009091893A1 (en) * | 2008-01-16 | 2009-07-23 | Penn Color, Inc. | Production of toner for use in printing applications |
| US8652745B2 (en) | 2008-01-16 | 2014-02-18 | Penn Color, Inc. | Ink toner particles with controlled surface morphology |
| US8129032B2 (en) | 2008-02-01 | 2012-03-06 | Exxonmobil Oil Corporation | Coating compositions, coated substrates and hermetic seals made therefrom having improved low temperature sealing and hot tack properties |
| WO2010054197A2 (en) | 2008-11-07 | 2010-05-14 | H R D Corporation | High shear process for producing micronized waxes |
| WO2014105464A1 (en) | 2012-12-28 | 2014-07-03 | Dow Global Technologies Llc | Coating compositions |
| CN105026502B (zh) | 2012-12-28 | 2020-12-04 | 陶氏环球技术有限责任公司 | 涂料组合物和由其制成的物品 |
| US9291925B2 (en) | 2013-03-08 | 2016-03-22 | Xerox Corporation | Phase immersion emulsification process and apparatus |
| CN114369263A (zh) * | 2022-01-14 | 2022-04-19 | 诺一迈尔（苏州）医学科技有限公司 | 一种聚己内酯微球及其制备方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2995533A (en) * | 1961-08-08 | Coatings for masonry building units | ||
| US2947715A (en) * | 1955-07-13 | 1960-08-02 | Exxon Research Engineering Co | Two-step creaming process for the preparation of emulsion latices from hydrocarbon polymer |
| US2921920A (en) * | 1956-07-03 | 1960-01-19 | Union Carbide Corp | Polyethylene telomer-polyalkylene oxide block copolymer and method of preparing same |
| US3322720A (en) * | 1964-08-12 | 1967-05-30 | Avisun Corp | Process for altering the particle size distribution of alpha mono-olefin polymers |
-
1965
- 1965-02-18 US US433690A patent/US3432483A/en not_active Expired - Lifetime
-
1966
- 1966-02-03 GB GB4857/66A patent/GB1062364A/en not_active Expired
- 1966-02-14 FR FR46943A patent/FR1469751A/fr not_active Expired
- 1966-02-16 DE DE1694673A patent/DE1694673C3/de not_active Expired
- 1966-02-17 CH CH228666A patent/CH473178A/de not_active IP Right Cessation
- 1966-02-18 NL NL6602120A patent/NL6602120A/xx unknown
- 1966-02-18 BE BE676722D patent/BE676722A/xx unknown
- 1966-02-18 SE SE02134/66A patent/SE329001B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1694673B2 (de) | 1977-12-29 |
| DE1694673A1 (de) | 1971-07-01 |
| CH473178A (de) | 1969-05-31 |
| FR1469751A (fr) | 1967-02-17 |
| SE329001B (cg-RX-API-DMAC7.html) | 1970-09-28 |
| US3432483A (en) | 1969-03-11 |
| NL6602120A (cg-RX-API-DMAC7.html) | 1966-08-19 |
| GB1062364A (en) | 1967-03-22 |
| BE676722A (cg-RX-API-DMAC7.html) | 1966-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |