NO983613L - Process for producing polyacrylamide particles - Google Patents
Process for producing polyacrylamide particlesInfo
- Publication number
- NO983613L NO983613L NO983613A NO983613A NO983613L NO 983613 L NO983613 L NO 983613L NO 983613 A NO983613 A NO 983613A NO 983613 A NO983613 A NO 983613A NO 983613 L NO983613 L NO 983613L
- Authority
- NO
- Norway
- Prior art keywords
- temperature
- gel particles
- particles
- processes
- aqueous
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 239000002245 particle Substances 0.000 title abstract 2
- 229920002401 polyacrylamide Polymers 0.000 title abstract 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract 3
- 239000007863 gel particle Substances 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 2
- 108700023418 Amidases Proteins 0.000 abstract 1
- 102000005922 amidase Human genes 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000002360 preparation method Methods 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
- C08F6/00—Post-polymerisation treatments
- C08F6/006—Removal of residual monomers by chemical reaction, e.g. scavenging
Landscapes
- Chemical & Material Sciences (AREA)
- General 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)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Prosesser for fremstilling av hovedsakelig tørt polyakrylamidpulver hvori nivåene hvor rest-akrylamidmonomer er vesentlig redusert, er tilveiebrakt. Disse prosesser er særlig egnet for bruk i en industriell eller fabrikkmessig skala. En prosess omfatter tilveiebringelse av vandige polyalkrylamid-gelpartikler forurenset med akrylamidmonomer, amidaseenzym påføres på de vandige gelpartikler mens disse befinner seg ved en temperatur på 50-95°C og hovedsakelig umiddelbart føres de vandige gelpartikler til et tørketrinn og underkastes i dette trinn for en temperatur på minst 60°C. De endelige nivåer for rest-akrylamid kan reduseres ennå mer med innføringen av et kort oppholdstrinn på ikke mer enn 30 minutter ved en temperatur på 20-70°C før partiklene føres til tørking.Processes for the preparation of substantially dry polyacrylamide powder in which the levels at which residual acrylamide monomer is substantially reduced are obtained. These processes are particularly suitable for use on an industrial or factory scale. A process comprises providing aqueous polyalkrylamide gel particles contaminated with acrylamide monomer, amidase enzyme is applied to the aqueous gel particles while at a temperature of 50-95 ° C and substantially immediately the aqueous gel particles are fed to a drying stage and subjected to a temperature in this step. at least 60 ° C. The final levels of residual acrylamide can be reduced even further with the introduction of a short residence step of no more than 30 minutes at a temperature of 20-70 ° C before the particles are brought to drying.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9602415.3A GB9602415D0 (en) | 1996-02-07 | 1996-02-07 | Polyacrylamide particles |
| PCT/GB1997/000317 WO1997029136A1 (en) | 1996-02-07 | 1997-02-04 | Processes for the production of polyacrylamide particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO983613D0 NO983613D0 (en) | 1998-08-06 |
| NO983613L true NO983613L (en) | 1998-10-07 |
Family
ID=10788230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO983613A NO983613L (en) | 1996-02-07 | 1998-08-06 | Process for producing polyacrylamide particles |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0879252A1 (en) |
| JP (1) | JP2000504057A (en) |
| AU (1) | AU1610997A (en) |
| BR (1) | BR9707271A (en) |
| GB (1) | GB9602415D0 (en) |
| MX (1) | MX9806357A (en) |
| NO (1) | NO983613L (en) |
| PL (1) | PL328372A1 (en) |
| WO (1) | WO1997029136A1 (en) |
| ZA (1) | ZA971021B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9716764D0 (en) * | 1997-08-07 | 1997-10-15 | Allied Colloids Ltd | Acrylamidase enzymes |
| GB9716767D0 (en) * | 1997-08-07 | 1997-10-15 | Allied Colloids Ltd | Polymer purification processes |
| AUPS166702A0 (en) * | 2002-04-10 | 2002-05-16 | Life Therapeutics Limited | Polyacrylamide hydrogels |
| GB0416285D0 (en) | 2004-07-21 | 2004-08-25 | Ciba Spec Chem Water Treat Ltd | Method of treating polymers |
| CA2723335C (en) * | 2009-12-16 | 2013-04-30 | Rohm And Haas Company | Low odor compositions and low odor coating compositions |
| AU2024273020A1 (en) * | 2023-05-18 | 2025-12-04 | Bl Technologies, Inc. | Method for producing polymers with low residual acrylamide and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8803064D0 (en) * | 1988-02-10 | 1988-03-09 | Allied Colloids Ltd | Polymeric compositions & their production |
| GB8908874D0 (en) * | 1989-04-19 | 1989-06-07 | Ici Plc | Method for the production of amidase enzyme |
| GB9020081D0 (en) * | 1990-09-14 | 1990-10-24 | Allied Colloids Ltd | Polymerisation processes |
| US6146861A (en) * | 1995-08-09 | 2000-11-14 | Ciba Specialty Chemicals Water Treatment Limited | Processes for the production of amidase |
-
1996
- 1996-02-07 GB GBGB9602415.3A patent/GB9602415D0/en active Pending
-
1997
- 1997-02-04 PL PL97328372A patent/PL328372A1/en unknown
- 1997-02-04 BR BR9707271A patent/BR9707271A/en unknown
- 1997-02-04 JP JP9528270A patent/JP2000504057A/en active Pending
- 1997-02-04 EP EP97902470A patent/EP0879252A1/en not_active Withdrawn
- 1997-02-04 WO PCT/GB1997/000317 patent/WO1997029136A1/en not_active Ceased
- 1997-02-04 AU AU16109/97A patent/AU1610997A/en not_active Abandoned
- 1997-02-07 ZA ZA9701021A patent/ZA971021B/en unknown
-
1998
- 1998-08-06 MX MX9806357A patent/MX9806357A/en unknown
- 1998-08-06 NO NO983613A patent/NO983613L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU1610997A (en) | 1997-08-28 |
| NO983613D0 (en) | 1998-08-06 |
| WO1997029136A1 (en) | 1997-08-14 |
| JP2000504057A (en) | 2000-04-04 |
| MX9806357A (en) | 1998-10-31 |
| GB9602415D0 (en) | 1996-04-03 |
| ZA971021B (en) | 1998-02-09 |
| EP0879252A1 (en) | 1998-11-25 |
| BR9707271A (en) | 1999-04-13 |
| PL328372A1 (en) | 1999-01-18 |
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