Method of making expandable styrene-type polymer beads

Details Method of making expandable styrene-type polymer beads Method of making expandable styrene-type polymer beads

C - Chemistry, Metallurgy

08

J

403/72, 403/80

C08J 9/18 (2006.01) C08L 25/04 (2006.01)

Patent

CA 1191000

. ABSTRACT OF THE DISCLOSURE Expandable styrene-type polymer beads having a short cooling time are obtained by a method wherein styrene-type polymer beads are impregnated with a blowing agent preferably as a step separate and independent of the polymerization step or in the same suspension polymerization reactor after a substantial completion of the polymerization, in an aqueous suspension comprising styrene- type polymer beads, a blowing agent, a suspending agent, at least 0.0001% of a halide salt of a transition metal selected from the group consisting of iron, titanium, vanadium, chromium, manganese, cobalt, nickel and copper, or a mixture thereof, and at least 0.001% of glycerol mono-, di-, or tri-ester of a fatty acid having 12-30 carbon atoms or a mixture thereof, said halide being bromide, chloride or iodide, and said percentages being based on the total weight of polymer beads subjected to the impregnation, with the proviso that if said glycerol ester is a tri-ester, there must be present at least 0.0001% of a bromide salt of said transition metal or a mixture thereof.

407890

Affiliated with

Also associated with

Rating

Method of making expandable styrene-type polymer beads does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making expandable styrene-type polymer beads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making expandable styrene-type polymer beads will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1194747