MX9806357A - Processes for the production of polyacrylamide particles. - Google Patents
Processes for the production of polyacrylamide particles.Info
- Publication number
- MX9806357A MX9806357A MX9806357A MX9806357A MX9806357A MX 9806357 A MX9806357 A MX 9806357A MX 9806357 A MX9806357 A MX 9806357A MX 9806357 A MX9806357 A MX 9806357A MX 9806357 A MX9806357 A MX 9806357A
- Authority
- MX
- Mexico
- Prior art keywords
- processes
- degree
- temperature
- gel particles
- stage
- Prior art date
Links
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
Processes are provided for production of substantially dry polyacrylamide powder in which levels of residual acrylamide monomer are significantly reduced. These processes are particularly suitable for use on an industrial or plant scale. One process comprises providing aqueous polyacrylamide gel particles contaminated with acrylamide monomer, applying amidase enzyme to the aqueous gel particles whilst they are at a temperature of from 50 to 95 degree C and substantially immediately passing the aqueous gel particles to a drying stage and subjecting them in that stage to a temperature at least 60 degree C. The final levels of residual acrylamide can be even further reduced with the introduction of a short holding stage of not more than 30 minutes at a temperature of 20 to 70 degree C before passing the particles to drying.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9602415.3A GB9602415D0 (en) | 1996-02-07 | 1996-02-07 | Polyacrylamide particles |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9806357A true MX9806357A (en) | 1998-10-31 |
Family
ID=10788230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9806357A MX9806357A (en) | 1996-02-07 | 1998-08-06 | Processes for the production of 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 (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9716767D0 (en) * | 1997-08-07 | 1997-10-15 | Allied Colloids Ltd | Polymer purification processes |
GB9716764D0 (en) * | 1997-08-07 | 1997-10-15 | Allied Colloids Ltd | Acrylamidase enzymes |
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 |
JP5156821B2 (en) * | 2009-12-16 | 2013-03-06 | ローム アンド ハース カンパニー | Low odor composition and low odor coating composition |
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 |
JPH11510392A (en) * | 1995-08-09 | 1999-09-14 | アライド コロイド リミテッド | Method for producing amidase |
-
1996
- 1996-02-07 GB GBGB9602415.3A patent/GB9602415D0/en active Pending
-
1997
- 1997-02-04 JP JP9528270A patent/JP2000504057A/en active Pending
- 1997-02-04 WO PCT/GB1997/000317 patent/WO1997029136A1/en not_active Application Discontinuation
- 1997-02-04 BR BR9707271A patent/BR9707271A/en unknown
- 1997-02-04 PL PL97328372A patent/PL328372A1/en unknown
- 1997-02-04 AU AU16109/97A patent/AU1610997A/en not_active Abandoned
- 1997-02-04 EP EP97902470A patent/EP0879252A1/en not_active Withdrawn
- 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 |
---|---|
BR9707271A (en) | 1999-04-13 |
ZA971021B (en) | 1998-02-09 |
EP0879252A1 (en) | 1998-11-25 |
PL328372A1 (en) | 1999-01-18 |
JP2000504057A (en) | 2000-04-04 |
GB9602415D0 (en) | 1996-04-03 |
NO983613L (en) | 1998-10-07 |
AU1610997A (en) | 1997-08-28 |
WO1997029136A1 (en) | 1997-08-14 |
NO983613D0 (en) | 1998-08-06 |
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