RO83333B1 - Process for aqueous suspension non-discontinuous polymerization of styrene - Google Patents

Process for aqueous suspension non-discontinuous polymerization of styrene

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Publication number
RO83333B1
RO83333B1 RO105399A RO10539981A RO83333B1 RO 83333 B1 RO83333 B1 RO 83333B1 RO 105399 A RO105399 A RO 105399A RO 10539981 A RO10539981 A RO 10539981A RO 83333 B1 RO83333 B1 RO 83333B1
Authority
RO
Romania
Prior art keywords
peroxide
butyl
styrene
triethyl
initiators
Prior art date
Application number
RO105399A
Other languages
Romanian (ro)
Other versions
RO83333A2 (en
Inventor
Dumitru Tudor
Mihaela Popescu
Alexandru Dimian
Raul Mihail
Ion Deaconescu
Gheorghe Mancas
Petre Marcu
Original Assignee
Institutul De Cercetari Chimice-Centrul De Cercetari Pentru Materiale Plastice
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 Institutul De Cercetari Chimice-Centrul De Cercetari Pentru Materiale Plastice filed Critical Institutul De Cercetari Chimice-Centrul De Cercetari Pentru Materiale Plastice
Priority to RO105399A priority Critical patent/RO83333B1/en
Publication of RO83333A2 publication Critical patent/RO83333A2/en
Publication of RO83333B1 publication Critical patent/RO83333B1/en

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Abstract

Inventia se refera la un procedeu de polimerizare discontinua în suspensie apoasa a stirenului în prezenta de sisteme de stabilizare a suspensiei constituite din agenti de dispersare organici, anorganici sau amestecuri ale acestora cu stabilizatori de suspensie, sisteme de initiere constituite dintr-un amestec de doi initiatori pentru temperaturi joase constînd din azo-di-izobutironitril, peroxid de lauroil, peroxid de decanoil, peroxid de ortometil benzoil, peroxid de nonanoil, peroxid de 3,5, 5-trimetilhexanol, peroxid de 2,4-diclorbenzoil, perpivalat de tertbutil, peroxid de caprilil, sau peroxid de propionil si pentru temperaturi medii reprezentati de per-2-etilhexanoat de tertbutil, peroxid de benzoil, peroxi-izo-butirat de tertbutil, sau peroxid de para-clorbenzoil, lubrefianti constînd din parafina, alcooli grasi, acid stearic, cîte unul sau în amestec si plastifianti pe baza de adipat de di-n-butil, sau acetil-trietil, fosfat de trietil, trifenil, tricrezil, sau alchil-aril, ftalat de dimetil, dietil, dibutil sau dioctil, stearat de butil sau etilenglicol monobutil prin care, în scopul reducerii duratei de reactie la 6...8,5h si al îmbunatatirii caracteristicilor fizico-mecanice ale polistirenului se utilizeaza 0,05...0,5% si, de preferinta, 0,1...0,35% în greutate fata de monomer, initiatori pentru temperaturi joase cu un timp de înjumatatire de 30....120 min....The invention relates to a batch polymerization process in aqueous suspension of styrene in the presence of suspension stabilization systems consisting of inorganic organic dispersing agents or mixtures thereof with suspension stabilizers, initiation systems consisting of a mixture of two initiators for low temperatures consisting of azo-di-isobutyronitrile, lauroyl peroxide, decanoyl peroxide, orthoethyl benzoyl peroxide, nonanoyl peroxide, 3,5,5,5-trimethylhexanol peroxide, 2,4-dichlorobenzoyl peroxide, tertbutyl perpivalate, caprylic peroxide or propionyl peroxide and for medium temperatures represented by tert-butyl per-2-ethylhexanoate, benzoyl peroxide, tert-butyl peroxy-isobutyrate or para-chlorobenzoyl peroxide, paraffin-based lubricants, fatty alcohols, stearic, either one or a mixture, and di-n-butyl or acetyl-triethyl adipate, triethyl, triphenyl, tricrezyl, or alkyl-a dimethyl, diethyl, dibutyl or dioctyl phthalate, butyl stearate or ethylene glycol monobutyl, in which 0.05 is used to reduce the reaction time to 6 to 8.5 hours and to improve the physic-mechanical characteristics of polystyrene. .0.5% and preferably 0.1 ... 0.35% by weight of the monomer, initiators for low temperatures with a 30 ... 120 min.

RO105399A 1981-09-25 1981-09-25 Process for aqueous suspension non-discontinuous polymerization of styrene RO83333B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO105399A RO83333B1 (en) 1981-09-25 1981-09-25 Process for aqueous suspension non-discontinuous polymerization of styrene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO105399A RO83333B1 (en) 1981-09-25 1981-09-25 Process for aqueous suspension non-discontinuous polymerization of styrene

Publications (2)

Publication Number Publication Date
RO83333A2 RO83333A2 (en) 1984-04-02
RO83333B1 true RO83333B1 (en) 1984-04-30

Family

ID=20110480

Family Applications (1)

Application Number Title Priority Date Filing Date
RO105399A RO83333B1 (en) 1981-09-25 1981-09-25 Process for aqueous suspension non-discontinuous polymerization of styrene

Country Status (1)

Country Link
RO (1) RO83333B1 (en)

Also Published As

Publication number Publication date
RO83333A2 (en) 1984-04-02

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