RO78872B - PROCEDEU SI INSTALATIE DE PREPARARE A UNUI COPOLIMER SOLUBIL îN APA - Google Patents
PROCEDEU SI INSTALATIE DE PREPARARE A UNUI COPOLIMER SOLUBIL îN APAInfo
- Publication number
- RO78872B RO78872B RO98241A RO9824179A RO78872B RO 78872 B RO78872 B RO 78872B RO 98241 A RO98241 A RO 98241A RO 9824179 A RO9824179 A RO 9824179A RO 78872 B RO78872 B RO 78872B
- Authority
- RO
- Romania
- Prior art keywords
- column
- solution
- manomer
- subjected
- aqueous solution
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2321—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by moving liquid and gas in counter current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2322—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles using columns, e.g. multi-staged columns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
- B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
- B01F23/237612—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
- B01F23/23765—Nitrogen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/20—Positioning, supporting, modifying or maintaining the physical state of objects being observed or treated
- H01J2237/2001—Maintaining constant desired temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/20—Positioning, supporting, modifying or maintaining the physical state of objects being observed or treated
- H01J2237/2002—Controlling environment of sample
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/26—Electron or ion microscopes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymerisation Methods In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Procedeul de preparare a unui copolimer solubil în apa cu proprietati de floculant, caracterizat prin aceea ca, o solutie apoasa de acilamida, metacrilamida, acid acrilic, acid metacrilic, sarurile si esterii acestora, acrilatii si metacrilati, cuaternati de aminoalchil si glicerina cu concentratiea în manomer cuprinsa între 30....90% în greutate, saturata cu aoxigen, este adusa în contact cu o solutie apoasa de hidroxid de sodiu, de potasiu, de amoniu sau sarurile alcaline si un initiator de polimerizare, astfel încît sa rezulte o solutie cu cuntinut de fotoinitiator de 0,005...1% în greutate cu pH de 4...13 si un continut de oxigen sub 0,01%, la o temperatura cuprinsa între temperatura camerei si 75 degree C, anestecarea fiind realizata prin introducerea de gaz inert pe la baza coloanei, apoi solutia de manomer rezultata în partea inferioara a coloanei este evacuata în strat subtire si este supusa iradierii cu raze ultraviolete, apoi produsul rezultat este supus uscarii si macinarii în mod cunoscut. Instalatia pentru realizarea procedeului, este alcatuita dintr-o coloana cu diametrul de 14 cm, avînd pereti opaci cu gauri de vizitare, care contin doua straturi de umplutura, cu elemente de umplutura din sticla sustinute de cîte o grila cu diametrul de peste 0,5 mm si care este prevazuta la partea superioara cu o conducra de alimentare..........
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7822883A FR2431876A2 (fr) | 1978-07-24 | 1978-07-24 | Procede de preparation de solutions aqueuses de monomeres olefiniques en vue d'une photopolymerisation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO78872A RO78872A (ro) | 1983-02-15 |
| RO78872B true RO78872B (ro) | 1983-02-28 |
Family
ID=9211509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO98241A RO78872B (ro) | 1978-07-24 | 1979-07-21 | PROCEDEU SI INSTALATIE DE PREPARARE A UNUI COPOLIMER SOLUBIL îN APA |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4294676A (ro) |
| EP (1) | EP0008246A1 (ro) |
| JP (1) | JPS584687B2 (ro) |
| AT (1) | AT369391B (ro) |
| AU (1) | AU532382B2 (ro) |
| BR (1) | BR7904697A (ro) |
| CA (1) | CA1123375A (ro) |
| DK (1) | DK309279A (ro) |
| ES (1) | ES482758A1 (ro) |
| FI (1) | FI65267C (ro) |
| FR (1) | FR2431876A2 (ro) |
| HU (1) | HU182660B (ro) |
| NO (1) | NO792432L (ro) |
| RO (1) | RO78872B (ro) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508687A (en) * | 1983-06-20 | 1985-04-02 | Houghton Richard W | Degassing/brine tank for pool chlorinating system |
| US5358611A (en) * | 1993-05-17 | 1994-10-25 | Rohm And Haas Company | Method of reducing impurities in aqueous monomer solutions |
| US6423235B1 (en) * | 1999-08-18 | 2002-07-23 | Nittetu Chemical Engineering Ltd. | Column gas-liquid contacting apparatus and its use thereof |
| US7879267B2 (en) | 2001-08-02 | 2011-02-01 | J&J Vision Care, Inc. | Method for coating articles by mold transfer |
| US7485672B2 (en) * | 2001-08-02 | 2009-02-03 | Johnson & Johnson Vision Care, Inc. | Process for the synthesis of soluble, high molecular weight polymers |
| GB0202990D0 (en) * | 2002-02-08 | 2002-03-27 | Ciba Spec Chem Water Treat Ltd | Apparatus and method for degassing liquids |
| DE10235643A1 (de) * | 2002-08-02 | 2004-02-19 | Cognis Deutschland Gmbh & Co. Kg | Überwachung der Stabilität von vinylogen Verbindungen |
| JP4713167B2 (ja) * | 2005-01-21 | 2011-06-29 | 株式会社日本触媒 | 吸水性樹脂の製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912607A (en) * | 1969-10-22 | 1975-10-14 | Rhone Progil | Process for obtaining high molecular weight water-soluble acrylic polymers and copolymers using radiation |
| DE2545290A1 (de) * | 1975-10-09 | 1977-04-21 | Roehm Gmbh | Verfahren zum polymerisieren mittels uv-licht |
| DE2546279A1 (de) * | 1975-10-16 | 1977-04-21 | Bayer Ag | Verfahren und vorrichtung zum loesen von feststoffen in loesungsmitteln |
| FR2348227A1 (fr) * | 1976-04-14 | 1977-11-10 | Rhone Poulenc Ind | Perfectionnement aux procedes de preparation de polymeres acryliques hydrosolubles par photopolymerisation |
-
1978
- 1978-07-24 FR FR7822883A patent/FR2431876A2/fr active Granted
-
1979
- 1979-06-26 EP EP79400423A patent/EP0008246A1/fr not_active Withdrawn
- 1979-07-10 US US06/056,337 patent/US4294676A/en not_active Expired - Lifetime
- 1979-07-19 AU AU49059/79A patent/AU532382B2/en not_active Ceased
- 1979-07-20 JP JP54091725A patent/JPS584687B2/ja not_active Expired
- 1979-07-21 RO RO98241A patent/RO78872B/ro unknown
- 1979-07-23 DK DK309279A patent/DK309279A/da not_active Application Discontinuation
- 1979-07-23 NO NO792432A patent/NO792432L/no unknown
- 1979-07-23 FI FI792298A patent/FI65267C/fi not_active IP Right Cessation
- 1979-07-23 BR BR7904697A patent/BR7904697A/pt unknown
- 1979-07-23 ES ES482758A patent/ES482758A1/es not_active Expired
- 1979-07-23 HU HU79RO1031A patent/HU182660B/hu unknown
- 1979-07-23 AT AT0507079A patent/AT369391B/de not_active IP Right Cessation
- 1979-07-23 CA CA332,346A patent/CA1123375A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| HU182660B (en) | 1984-02-28 |
| AT369391B (de) | 1982-12-27 |
| US4294676A (en) | 1981-10-13 |
| FR2431876A2 (fr) | 1980-02-22 |
| FI65267C (fi) | 1984-04-10 |
| EP0008246A1 (fr) | 1980-02-20 |
| FI65267B (fi) | 1983-12-30 |
| JPS584687B2 (ja) | 1983-01-27 |
| BR7904697A (pt) | 1980-05-27 |
| FI792298A7 (fi) | 1980-01-25 |
| AU4905979A (en) | 1980-01-31 |
| RO78872A (ro) | 1983-02-15 |
| NO792432L (no) | 1980-01-25 |
| CA1123375A (fr) | 1982-05-11 |
| DK309279A (da) | 1980-01-25 |
| FR2431876B2 (ro) | 1982-02-12 |
| JPS5562903A (en) | 1980-05-12 |
| ATA507079A (de) | 1982-05-15 |
| AU532382B2 (en) | 1983-09-29 |
| ES482758A1 (es) | 1980-07-01 |
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