Divinylbenzene in expandable beads for cup molding

Details Divinylbenzene in expandable beads for cup molding Divinylbenzene in expandable beads for cup molding

C - Chemistry, Metallurgy

08

F

403/80

C08F 212/08 (2006.01) C08J 9/18 (2006.01)

Patent

CA 1281847

ABSTRACT OF THE DISCLOSURE Copolymer beads made by suspension copolymeriza- tion of styrenic monomer with divinylbenzene under condi- tions such that the products had defined solubility, gel content, molecular weight and bead size characteristics which enabled their use (after impregnation with a blowing agent and pre-expansion) in molding into foamed cups over a much broader range of time and temperature and the resultant cups are stiffer per given weight than cups made from conventional polystyrenes utilized for making foamed cups. These advantages are realized without any sacrifice in cup appearance.

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