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Machine translation
1. (WO1980002029) METHOD OF PREPARING SPHERICAL POROUS BEAD-TYPE POLYMERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002029    International Application No.:    PCT/US1980/000154
Publication Date: 02.10.1980 International Filing Date: 04.02.1980
IPC:
C08F 2/20 (2006.01)
Applicants:
Inventors:
Priority Data:
21399 19.03.1979 US
Title (EN) METHOD OF PREPARING SPHERICAL POROUS BEAD-TYPE POLYMERS
(FR) METHODE DE PREPARATION DE POLYMERES DU TYPE A PERLES POREUSES, SPHERIQUES
Abstract: front page image
(EN)New and improved quiescent polymerization process which produces spherical beads of polymer having excellent porosity and unusually high bulk density. The process comprises polymerizing discrete droplets of liquid monomer containing a monomer-soluble free radical type catalyst while suspended in an aqueous mucilage having plastic flow properties and in the presence of a noionic surfactant having the proper Hydrophile-Lipophile Balance (HLB), such as, for example, sorbitan monooleate. The porous bead polymers have the advantage of providing for lower cost bulk shipping, better extrusion feed, and for easy monomer stripping.
(FR)Nouveau procede ameliore de polymerisation servant a produire des perles spheriques d"un polymere ayant une excellente porosite et une haute densite en vrac peu commune. Le procede consiste en une polymerisation discrete de gouttelettes d"un monomere liquide contenant un catalyseur du type a radical insoluble dans un monomere tout en etant suspendu dans un mucilage aqueux ayant des proprietes d"ecoulement plastique et en presence d"un agent tensio-actif non-ionique ayant l"equilibre hydrophile-lypophile approprie (HLB), tel que, par exemple, le sorbitan monooleate. Les polymeres en forme de perles poreuses ont l"avantage de reduire les couts de transport en vrac, ont une meilleure avance d"extrusion, ainsi qu"un depouillage plus facile du monomere.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)