GB1461476A - Drying of acrylamide polymers - Google Patents

Drying of acrylamide polymers

Info

Publication number
GB1461476A
GB1461476A GB2986974A GB2986974A GB1461476A GB 1461476 A GB1461476 A GB 1461476A GB 2986974 A GB2986974 A GB 2986974A GB 2986974 A GB2986974 A GB 2986974A GB 1461476 A GB1461476 A GB 1461476A
Authority
GB
United Kingdom
Prior art keywords
acrylamide
copolymer
drying
copolymers
thiourea
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2986974A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1461476A publication Critical patent/GB1461476A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • 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
    • C08F6/06—Treatment of polymer solutions
    • C08F6/12—Separation of polymers from solutions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/24—Homopolymers or copolymers of amides or imides
    • C08J2333/26—Homopolymers or copolymers of acrylamide or methacrylamide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

1461476 Drying acrylamide polymers SUMITOMO CHEMICAL CO Ltd 5 July 1974 [10 July 1973] 29869/74 Heading C3P Acrylamide polymers are dried by mixing the wet polymer with a thiourea compound in an amount of at least 0À01 wt. per cent based on the weight of dry polymer, and thereafter drying the polymer in the presence of said compound. Polymers which may be treated are polyacrylamide, acrylamide / acrylonitrile copolymer, acrylamide / methacrylamide copolymer, acrylamide / styrene copolymer, acrylamide/ acrylic acid salt copolymers, acrylamide/ammonium acrylate copolymer, acrylamide/vinyl sulphonate copolymers, acrylamide/itaconate copolymers, cationically modified polyacrylamides, acrylamide/dialkylaminoethyl acrylate copolymers, and acrylamide/vinyl pyridine copolymer. The thiourea compound may be thiourea itself, or a substituted thiourea such as trimethyl-, triethyl-, tetramethyl- or tetraethylthiourea. In the examples, the drying is effected by heating at atmospheric pressure.
GB2986974A 1973-07-10 1974-07-05 Drying of acrylamide polymers Expired GB1461476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7818073A JPS5027849A (en) 1973-07-10 1973-07-10

Publications (1)

Publication Number Publication Date
GB1461476A true GB1461476A (en) 1977-01-13

Family

ID=13654755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2986974A Expired GB1461476A (en) 1973-07-10 1974-07-05 Drying of acrylamide polymers

Country Status (5)

Country Link
JP (1) JPS5027849A (en)
DE (1) DE2432409A1 (en)
FR (1) FR2236880A1 (en)
GB (1) GB1461476A (en)
IT (1) IT1014498B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050808B2 (en) * 1975-08-20 1985-11-11 三菱レイヨン株式会社 Method for producing acrylamide polymer powder

Also Published As

Publication number Publication date
IT1014498B (en) 1977-04-20
FR2236880A1 (en) 1975-02-07
DE2432409A1 (en) 1975-01-30
JPS5027849A (en) 1975-03-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee