GB801399A - Method of enlarging solid cross-linked polymer bodies - Google Patents

Method of enlarging solid cross-linked polymer bodies

Info

Publication number
GB801399A
GB801399A GB2941355A GB2941355A GB801399A GB 801399 A GB801399 A GB 801399A GB 2941355 A GB2941355 A GB 2941355A GB 2941355 A GB2941355 A GB 2941355A GB 801399 A GB801399 A GB 801399A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
styrene
divinylbenzene
benzene
polymer
ethylvinylbenzene
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
GB2941355A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F257/00Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00
    • C08F257/02Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00 on to polymers of styrene or alkyl-substituted styrenes

Abstract

Slightly cross-linked polymer bodies are enlarged by swelling to between 5 and 30 times their initial volume with at least one monomeric vinylidene compound and polymerizing the monomer present in the swollen polymer while the latter is immersed in a liquid medium which is not a solvent for the monomer or polymer. Optionally the swelling process may be conducted in the presence of the non-solvent. The polymer may be polystyrene cross-linked by electron bombardment; copolymers of styrene, ar-ethylvinylbenzene and divinylbenzene; ar-chlorostyrene, ethylvinylbenzene and divinyl-benzene; ar-vinyltoluene and divinylbenzene; vinyltoluene, ethylvinyl benzene and divinyl-benzene; styrene and butadiene-1,3; styrene and isoprene; vinyltoluene and butadiene; a -methyl styrene, styrene, ethylvinylbenzene and divinylbenzene; or methyl methacrylate, ethyl-vinylbenzene and divinylbenzene. Specified monomers are vinyl acetate, styrene, chloro-styrene, vinyl toluene, methyl methacrylate, acrylonitrile, optionally with minor proportions of a polyolefinic compound, e.g. divinyl benzene or butadiene. Catalysts, e.g. benzoyl and lauroyl peroxides, and a ,a 1-azo-bisisobutyronitrile, dyes, lubricants and plasticisers may be added to the monomers. The swollen polymer bodies may be suspended in water in the presence of starch, methyl cellulose, bentonite, copper sulphate and a water-soluble urea-ethylene oxide-formaldehyde reaction product, and the suspension stirred to prevent bonding. The process may be repeated to further enlarge the bodies.
GB2941355A 1954-11-12 1955-10-14 Method of enlarging solid cross-linked polymer bodies Expired GB801399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US801399X true 1954-11-12 1954-11-12

Publications (1)

Publication Number Publication Date
GB801399A true true GB801399A (en) 1958-09-10

Family

ID=22155506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2941355A Expired GB801399A (en) 1954-11-12 1955-10-14 Method of enlarging solid cross-linked polymer bodies

Country Status (1)

Country Link
GB (1) GB801399A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421185A1 (en) * 1978-03-27 1979-10-26 Labofina Sa Process for the preparation of styrenic resins reinforced with rubber and resins obtained by this method
EP0448391A2 (en) * 1990-03-22 1991-09-25 Rohm And Haas Company Process for making controlled uniform-sized polymer particles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421185A1 (en) * 1978-03-27 1979-10-26 Labofina Sa Process for the preparation of styrenic resins reinforced with rubber and resins obtained by this method
EP0448391A2 (en) * 1990-03-22 1991-09-25 Rohm And Haas Company Process for making controlled uniform-sized polymer particles
EP0448391A3 (en) * 1990-03-22 1992-03-18 Rohm And Haas Company Process for making controlled uniform-sized polymer particles

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