RO83586B - Process for preparing acrylamide-based flocculation polymers - Google Patents
Process for preparing acrylamide-based flocculation polymersInfo
- Publication number
- RO83586B RO83586B RO105236A RO10523681A RO83586B RO 83586 B RO83586 B RO 83586B RO 105236 A RO105236 A RO 105236A RO 10523681 A RO10523681 A RO 10523681A RO 83586 B RO83586 B RO 83586B
- Authority
- RO
- Romania
- Prior art keywords
- acrylamide
- preparing acrylamide
- polymers
- based flocculation
- flocculation polymers
- Prior art date
Links
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 title abstract 5
- 229920000642 polymer Polymers 0.000 title abstract 2
- 230000016615 flocculation Effects 0.000 title 1
- 238000005189 flocculation Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000001179 sorption measurement Methods 0.000 abstract 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 238000002144 chemical decomposition reaction Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 238000006703 hydration reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000638 solvent extraction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/52—Amides or imides
- C08F20/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F20/56—Acrylamide; Methacrylamide
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a polimerilor floculanti pe baza de acrilamida, prin reactia de hidratare catalitica a acrilonitrilului cu apa în prezenta de cupru drept catalizator la pH = 4...10, la temperatura de 50...150 degree C si presiune cuprinsa între presiunea atmosferica si circa 10 kgf/cm2 dupa care solutia de acrilamida bruta, astfel obtinuta continînd pîna la 10 ppm fata de acrilamida, N-acrilamida prin adsorbtie fizica, adsorbtie reactiva, descompunere chimica si extractie cu solventi, aceste produse utilizîndu-se singure sau combinate si, în final, acrilamida astfel purificata se supune reactiei de polimerizare în mod cunoscut.The invention relates to a process for the preparation of acrylamide-based flocculating polymers by the catalytic hydration reaction of acrylonitrile with water in the presence of copper as a catalyst at pH = 4 ... 10 at a temperature of 50 ... 150 ° C and a pressure comprised between atmospheric pressure and about 10 kgf / cm2, whereupon the crude acrylamide solution thus obtained containing up to 10 ppm of acrylamide, N-acrylamide by physical adsorption, reactive adsorption, chemical decomposition and solvent extraction, these products utilizing either alone or combined, and finally the thus purified acrylamide is subjected to the known polymerization reaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121743A JPS5747309A (en) | 1980-09-04 | 1980-09-04 | Preparation of acrylamide cationic high polymeric coagulant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO83586A RO83586A (en) | 1984-04-02 |
| RO83586B true RO83586B (en) | 1984-04-30 |
Family
ID=14818774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO105236A RO83586B (en) | 1980-09-04 | 1981-09-04 | Process for preparing acrylamide-based flocculation polymers |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5747309A (en) |
| KR (1) | KR860001550B1 (en) |
| AT (1) | AT370747B (en) |
| AU (1) | AU543111B2 (en) |
| CA (1) | CA1223700A (en) |
| DD (1) | DD202036A5 (en) |
| DE (1) | DE3135149A1 (en) |
| ES (1) | ES504916A0 (en) |
| FI (1) | FI70032C (en) |
| FR (1) | FR2489338B1 (en) |
| GB (1) | GB2083053B (en) |
| IT (1) | IT1139422B (en) |
| NL (1) | NL186165C (en) |
| RO (1) | RO83586B (en) |
| ZA (1) | ZA815194B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3801736A1 (en) * | 1988-01-21 | 1989-07-27 | Nitrokemia Ipartelepek | METHOD FOR PRODUCING ACRYLIC ACID AMID / ACRYLIC ACID COPOLYMERS OF HIGH MOLECULAR WEIGHT |
| MX18620A (en) * | 1988-12-19 | 1993-10-01 | American Cyanamid Co | HIGH PERFORMANCE POLYMERIC FLOCULANT, PROCESS FOR ITS PREPARATION, METHOD FOR THE RELEASE OF WATER FROM A DISPERSION OF SUSPENDED SOLIDS AND FLOCULATION METHOD OF A DISPERSION OF SUSPENDED SOLIDS |
| JPH03119011A (en) * | 1989-10-03 | 1991-05-21 | Mitsui Toatsu Chem Inc | Production of cationic high molecular-weight polymer |
| KR100318327B1 (en) * | 1995-12-16 | 2002-04-22 | 구광시 | Manufacturing method of emulsion type polymer coagulant |
| DE10041392A1 (en) * | 2000-08-23 | 2002-03-07 | Stockhausen Chem Fab Gmbh | Water-soluble homopolymers and copolymers with improved environmental compatibility |
| JP3996535B2 (en) * | 2003-03-20 | 2007-10-24 | Ｎｅｃ液晶テクノロジー株式会社 | Liquid crystal display |
| DE102004032766A1 (en) * | 2004-07-06 | 2006-02-09 | Röhm GmbH & Co. KG | Concentrated aqueous methacrylamide solution with the addition of methacrylic acid |
| CN116023587B (en) * | 2022-10-31 | 2024-05-07 | 中国矿业大学(北京) | A kind of iron-based hybrid flocculant and its preparation method and application |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130229A (en) * | 1961-02-06 | 1964-04-21 | Dow Chemical Co | Method for the manufacture of acrylamide |
| AU407356B2 (en) * | 1965-12-31 | 1970-10-22 | Process for the preparation of aqueous solutions of flocculating agents of the poly-acrylic amide type having high molecular weight | |
| DE2255391C3 (en) * | 1972-11-11 | 1982-05-13 | Bayer Ag, 5090 Leverkusen | Process for the production of high molecular weight cationic copolymers |
| JPS5082011A (en) * | 1973-11-22 | 1975-07-03 | ||
| JPS5083323A (en) * | 1973-11-29 | 1975-07-05 | ||
| JPS5291819A (en) * | 1976-01-28 | 1977-08-02 | Mitsui Toatsu Chem Inc | Purification of aqueous solutions of acrylamide |
| GB2059952B (en) * | 1979-09-13 | 1983-07-20 | Mitsui Toatsu Chemicals | Purifying aqueous acrylamide solutions |
-
1980
- 1980-09-04 JP JP55121743A patent/JPS5747309A/en active Granted
-
1981
- 1981-07-28 AU AU73501/81A patent/AU543111B2/en not_active Ceased
- 1981-07-28 ZA ZA815194A patent/ZA815194B/en unknown
- 1981-08-12 FI FI812485A patent/FI70032C/en not_active IP Right Cessation
- 1981-08-24 ES ES504916A patent/ES504916A0/en active Granted
- 1981-08-24 NL NLAANVRAGE8103925,A patent/NL186165C/en not_active IP Right Cessation
- 1981-08-25 CA CA000384593A patent/CA1223700A/en not_active Expired
- 1981-09-02 DD DD81232976A patent/DD202036A5/en not_active IP Right Cessation
- 1981-09-03 AT AT0381681A patent/AT370747B/en not_active IP Right Cessation
- 1981-09-03 GB GB8126731A patent/GB2083053B/en not_active Expired
- 1981-09-03 IT IT23767/81A patent/IT1139422B/en active
- 1981-09-04 RO RO105236A patent/RO83586B/en unknown
- 1981-09-04 DE DE19813135149 patent/DE3135149A1/en active Granted
- 1981-09-04 FR FR8116859A patent/FR2489338B1/en not_active Expired
- 1981-09-04 KR KR1019810003294A patent/KR860001550B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2489338B1 (en) | 1987-04-30 |
| AU7350181A (en) | 1982-09-23 |
| NL186165C (en) | 1990-10-01 |
| AU543111B2 (en) | 1985-04-04 |
| KR830007738A (en) | 1983-11-07 |
| GB2083053A (en) | 1982-03-17 |
| FI70032B (en) | 1986-01-31 |
| ES8300344A1 (en) | 1982-11-01 |
| FR2489338A1 (en) | 1982-03-05 |
| NL186165B (en) | 1990-05-01 |
| CA1223700A (en) | 1987-06-30 |
| RO83586A (en) | 1984-04-02 |
| JPS5747309A (en) | 1982-03-18 |
| FI812485L (en) | 1982-03-05 |
| ES504916A0 (en) | 1982-11-01 |
| NL8103925A (en) | 1982-04-01 |
| AT370747B (en) | 1983-04-25 |
| ATA381681A (en) | 1982-09-15 |
| ZA815194B (en) | 1982-07-28 |
| IT1139422B (en) | 1986-09-24 |
| KR860001550B1 (en) | 1986-10-04 |
| GB2083053B (en) | 1984-09-12 |
| DD202036A5 (en) | 1983-08-24 |
| DE3135149A1 (en) | 1982-04-08 |
| FI70032C (en) | 1986-09-12 |
| DE3135149C2 (en) | 1991-05-08 |
| IT8123767A0 (en) | 1981-09-03 |
| JPH0260682B2 (en) | 1990-12-18 |
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