GB1474232A - Production of a gel of a water-soluble polymer - Google Patents

Production of a gel of a water-soluble polymer

Info

Publication number
GB1474232A
GB1474232A GB1925774A GB1925774A GB1474232A GB 1474232 A GB1474232 A GB 1474232A GB 1925774 A GB1925774 A GB 1925774A GB 1925774 A GB1925774 A GB 1925774A GB 1474232 A GB1474232 A GB 1474232A
Authority
GB
United Kingdom
Prior art keywords
gel
polymerization
vessel
water
monomer
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
GB1925774A
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.)
Nitto Chemical Industry Co Ltd
Original Assignee
Nitto Chemical Industry 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
Priority claimed from JP4950873A external-priority patent/JPS5432176B2/ja
Priority claimed from JP7672273A external-priority patent/JPS533427B2/ja
Priority claimed from JP8699273A external-priority patent/JPS5035282A/ja
Priority claimed from JP8699373A external-priority patent/JPS5146553B2/ja
Application filed by Nitto Chemical Industry Co Ltd filed Critical Nitto Chemical Industry Co Ltd
Publication of GB1474232A publication Critical patent/GB1474232A/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
    • C08J3/12—Powdering or granulating
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/04—Polymerisation in solution
    • C08F2/10—Aqueous solvent
    • 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
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels

Landscapes

  • 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)
  • Polymerisation Methods In General (AREA)

Abstract

1474232 Polymerization of water-soluble monomers into gels; recovering gels from reaction vessels NITTO KAGAKU KOGYO KK 2 May 1974 [2 May 1973 7 July 1973 2 Aug 1973 (2)] 19257/74 Heading C3P An aqueous solution of a water-soluble monomer is polymerized to form a gel by a process wherein: (i) the mass of gel is unagitated during polymerization, (ii) the temperature of the gel is permitted to rise due to the heat of polymerization, (iii) heat is supplied to the polymerization vessel to compensate for the heat sink properties of the vessel and auxiliaries and provide uniform temperature throughout, and (iv) the weight ratio of the monomer to the water is chosen so that the final gel will fall out of the polymerization vessel under its own weight. After polymerization the vessel is upended and the mass of gel is caused to collide with a rigid bar disposed between the vessel and a receptor for the gel so that the bar absorbs the energy of falling of the gel. The preferred monomer is acrylamide.
GB1925774A 1973-05-02 1974-05-02 Production of a gel of a water-soluble polymer Expired GB1474232A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP4950873A JPS5432176B2 (en) 1973-05-02 1973-05-02
JP7672273A JPS533427B2 (en) 1973-07-07 1973-07-07
JP8699273A JPS5035282A (en) 1973-08-02 1973-08-02
JP8699373A JPS5146553B2 (en) 1973-08-02 1973-08-02

Publications (1)

Publication Number Publication Date
GB1474232A true GB1474232A (en) 1977-05-18

Family

ID=27462364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1925774A Expired GB1474232A (en) 1973-05-02 1974-05-02 Production of a gel of a water-soluble polymer

Country Status (3)

Country Link
DE (1) DE2421076C3 (en)
FR (1) FR2228075B1 (en)
GB (1) GB1474232A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4283517A (en) * 1979-07-16 1981-08-11 Milchem Incorporated Continuous process for solution polymerization of acrylamide
CA1268732A (en) * 1984-12-27 1990-05-08 Akira Yada Radiation-polymerizing water-soluble cast vinyl monomer layer and forming particles

Also Published As

Publication number Publication date
FR2228075A1 (en) 1974-11-29
DE2421076C3 (en) 1978-12-14
DE2421076B2 (en) 1978-04-06
FR2228075B1 (en) 1976-06-25
DE2421076A1 (en) 1974-11-21

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Legal Events

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

Effective date: 19930502