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
Application number
MX9806357A
Other languages
Spanish (es)
Inventor
Jonathan Hughes
Yvonne Christine Armitage
Kenneth Charles Symes
Anthony Paul Brooke
Original Assignee
Allied Colloids Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Allied Colloids Ltd filed Critical Allied Colloids Ltd
Publication of MX9806357A publication Critical patent/MX9806357A/en

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.
MX9806357A 1996-02-07 1998-08-06 Processes for the production of polyacrylamide particles. MX9806357A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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