GB708844A - Improvements in or relating to the production of granular polymers - Google Patents

Improvements in or relating to the production of granular polymers

Info

Publication number
GB708844A
GB708844A GB2244051A GB2244051A GB708844A GB 708844 A GB708844 A GB 708844A GB 2244051 A GB2244051 A GB 2244051A GB 2244051 A GB2244051 A GB 2244051A GB 708844 A GB708844 A GB 708844A
Authority
GB
United Kingdom
Prior art keywords
solution
boiling point
polyvinyl
aqueous solution
sodium salt
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
GB2244051A
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.)
SAMUEL AARON MILLER
BOC Group Ltd
Original Assignee
SAMUEL AARON MILLER
British Oxigen 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 SAMUEL AARON MILLER, British Oxigen Ltd filed Critical SAMUEL AARON MILLER
Priority to GB2244051A priority Critical patent/GB708844A/en
Publication of GB708844A publication Critical patent/GB708844A/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
    • C08J3/16—Powdering or granulating by coagulating dispersions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • 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
    • C08J2357/00—Characterised by the use of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

A polyvinyl resin such as polyvinyl acetate, polystyrene and polymethylmethacrylate in solution in an organic solvent of boiling point below 100 DEG C. or one forming azeotropes with water which boil below 100 DEG C., is injected into a dilute aqueous solution of a dispersing agent at a temperature sufficient to vaporize the solvent and cooled with constant stirring so as to produce the polymer in granular form. The solution is preferably injected as one or several streams under the surface of the stirred aqueous solution of dispersing agent which is maintained at a temperature above the boiling point of the organic solvent. Specified dispersing agents are polyvinyl alcohol, ethylhydroxyethyl cellulose, the sodium salt of carboxymethyl cellulose, sodium alginate and the sodium salt of the copolymer of styrene and maleic anhydride. Specified organic solvents are benzene, methyl alcohol, and methyl acetate.
GB2244051A 1951-09-25 1951-09-25 Improvements in or relating to the production of granular polymers Expired GB708844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2244051A GB708844A (en) 1951-09-25 1951-09-25 Improvements in or relating to the production of granular polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2244051A GB708844A (en) 1951-09-25 1951-09-25 Improvements in or relating to the production of granular polymers

Publications (1)

Publication Number Publication Date
GB708844A true GB708844A (en) 1954-05-12

Family

ID=10179393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2244051A Expired GB708844A (en) 1951-09-25 1951-09-25 Improvements in or relating to the production of granular polymers

Country Status (1)

Country Link
GB (1) GB708844A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1026074B (en) * 1955-04-06 1958-03-13 Wacker Chemie Gmbh Process for the radical polymerization of polymerizable unsaturated organic compounds in aqueous suspension or emulsion
US4119687A (en) * 1976-03-18 1978-10-10 Bayer Aktiengesellschaft Process for the production of powder-form hydrolyzed ethylene/vinyl acetate copolymers
EP0077561A1 (en) * 1981-10-20 1983-04-27 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Process for isolating polymer
GB2204873A (en) * 1987-04-09 1988-11-23 David Charlesworth Polymer coagulation methods and apparatus therefor: tubular prostheses

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1026074B (en) * 1955-04-06 1958-03-13 Wacker Chemie Gmbh Process for the radical polymerization of polymerizable unsaturated organic compounds in aqueous suspension or emulsion
US4119687A (en) * 1976-03-18 1978-10-10 Bayer Aktiengesellschaft Process for the production of powder-form hydrolyzed ethylene/vinyl acetate copolymers
EP0077561A1 (en) * 1981-10-20 1983-04-27 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Process for isolating polymer
GB2204873A (en) * 1987-04-09 1988-11-23 David Charlesworth Polymer coagulation methods and apparatus therefor: tubular prostheses
GB2204873B (en) * 1987-04-09 1991-08-07 David Charlesworth Method and apparatus for making polymer material
US5132066A (en) * 1987-04-09 1992-07-21 Newtec V.P. Limited Method of forming a bio-compatible vascular prosthesis

Similar Documents

Publication Publication Date Title
GB708844A (en) Improvements in or relating to the production of granular polymers
GB855888A (en) A process for the production of polymers of acrolein or ª‡-alkyl acroleins
SE7705211L (en) PROCEDURE FOR THE PREPARATION OF ROUGH-OXIMETHYLENE POLYMERS
GB855153A (en) Spin-dyeing of acrylonitrile polymers
CH277992A (en) Process for the preparation of rubber hydrohalides in the form of aqueous dispersions.
GB612530A (en) Evaporating caustic soda solutions
JPS5227455A (en) Process for preparing a high polymer material having water absorption properties
GB899667A (en) Crystalline griseofulvin
GB369725A (en) Improvements in the manufacture and production of conversion products of rubber
JPS53134032A (en) Production of easy dispersion granular pigment
GB649474A (en) Compositions comprising acrylonitrile polymers
JPS5340038A (en) Preparation of microhydrogel
GB641310A (en) New, solid, glass-like polymers
GB985070A (en) Improvements in or relating to the manufacture of 2,3-dichlorobutadiene
GB621651A (en) Improvements in and relating to the manufacture of tablets having a gelatinous base
GB1168388A (en) Process for the preparation of Vulcanizable, Modified, Synthetic, Conjugated-Diene Polymers
GB1084075A (en) Improvements in or relating to the preparation of anhydrous lithium peroxide
GB852756A (en) Improved pelleting process
GB627248A (en) Improvements in or relating to the manufacture of expanded plastic materials
GB806269A (en) Process for the conversion of polyethylene terephthalate into dimethyl terephthalate
GB647433A (en) Production of dichlorodiphenyltrichloroethane
GB653772A (en) Process for the manufacture of an alkyl-cellulose composition in a finely pulverulent form
GB600227A (en) Improvements in the manufacture of insecticides
GB712998A (en) Improvements in the production and use of acrylonitrile polymer solutions
GB626503A (en) Process for preparing light magnesium hydroxide