GB686579A - Extraction process for polymer treatment - Google Patents

Extraction process for polymer treatment

Info

Publication number
GB686579A
GB686579A GB4028/51A GB402851A GB686579A GB 686579 A GB686579 A GB 686579A GB 4028/51 A GB4028/51 A GB 4028/51A GB 402851 A GB402851 A GB 402851A GB 686579 A GB686579 A GB 686579A
Authority
GB
United Kingdom
Prior art keywords
poly
styrene
polyvinyl
vinyl
methyl
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
GB4028/51A
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.)
Beazer East Inc
Original Assignee
Koppers Co Inc
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 Koppers Co Inc filed Critical Koppers Co Inc
Publication of GB686579A publication Critical patent/GB686579A/en
Expired legal-status Critical Current

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
    • C08F6/24—Treatment of polymer suspensions

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)

Abstract

Polymer particles, e.g. beads, granules, powder, are separated from removable components, e.g. purified, by forming a suspension, preferably with agitation and at raised temperature, of the polymer and a suspension stabilizer in a liquid which is a non-solvent for the polymer but a solvent for the removable components and separating the extracted polymer particles from the liquid. The suspension stabilizer may be added to the liquid as a coating on the polymer particles. Specified stabilizers are zinc oxide, tricalcium phosphate, magnesium, barium or aluminium phosphate, calcium carbonate, calcium fluoride, polyvinyl alcohol, sodium carboxy methyl cellulose, talc, kaolin, kieselguhr, aluminium oxide, barium sulphate, magnesium carbonate, ferric carbonate, magnesium silicate and bentonite. The liquid may be methanol, ethanol, propanol or isopropanol. The polymers mentioned are polystyrene, polyvinyl naphthalene, polyvinyl diphenyl, poly-o-, m-, and p-methyl-or ethyl-styrene, poly-dimethyl styrene, poly-isopropyl-styrene, poly-p-cyclohexyl styrene, poly-p-phenyl styrene, poly-methoxystyrene, poly-halo- and dihalo-styrenes, poly-halo-alkyl-styrenes, poly-monocyano and dicyano-styrenes, poly-cyano-alkyl styrenes, poly-acrylic, alpha-methacrylic and alpha-chloroacrylic acids and their esters, e.g. methyl esters, amides and nitriles, polyvinyl chloride, polyvinyl fluoride, polyvinylidene chloride and fluoride, polythene, polyisobutylene, polyvinyl acetate, polyvinyl propionate, polyvinyl benzoate, polydivinyl ether, polyvinyl isopropenyl ether, polyvinyl methyl ether, polyvinyl ethyl ether, polydivinyl ketone, polymethyl vinyl ketone, polyvinyl ethyl ketone, polyacrylophenone, poly N-vinyl amides, poly N-vinyl acetamide, poly N-vinyl succinimide, poly N-vinyl phthalimide, poly N-vinyl maleimide, poly N-vinyl caprolactam and copolymers of mixtures of the above monomers. Specified copolymers are those derived from styrene, alpha-methyl styrene and divinyl benzene; styrene, vinyl naphthalene, alpha-methyl styrene and divinyl benzene; styrene, vinylidene chloride and vinyl acetate; vinylidene chloride, acrylonitrile and vinyl acetate; vinylidene chloride, styrene, methacrylamide and methyl vinyl ketone; vinylidene chloride, methyl methacrylate, acrylonitrile, styrene and methacrylamide; methyl methacrylate, acrylonitrile, styrene, maleic anhydride and dimethyl maleate. The process is useful for determining the quantities of plasticizers, dyes and stabilizers present in polymeric materials.
GB4028/51A 1950-02-21 1951-02-19 Extraction process for polymer treatment Expired GB686579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US686579XA 1950-02-21 1950-02-21

Publications (1)

Publication Number Publication Date
GB686579A true GB686579A (en) 1953-01-28

Family

ID=22083924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4028/51A Expired GB686579A (en) 1950-02-21 1951-02-19 Extraction process for polymer treatment

Country Status (1)

Country Link
GB (1) GB686579A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129552A (en) * 1976-03-10 1978-12-12 Compagnie General d'Electricite S.A. Insulation material for high voltage electric power cable
EP0598388A1 (en) * 1992-11-16 1994-05-25 Eastman Kodak Company Limited coalescence process
GB2408264A (en) * 2003-10-29 2005-05-25 Bespak Plc Cleaning or purifying polymers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129552A (en) * 1976-03-10 1978-12-12 Compagnie General d'Electricite S.A. Insulation material for high voltage electric power cable
EP0598388A1 (en) * 1992-11-16 1994-05-25 Eastman Kodak Company Limited coalescence process
GB2408264A (en) * 2003-10-29 2005-05-25 Bespak Plc Cleaning or purifying polymers

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