TY - PAT
T1 - Water expendable polymer beads
AU - Ghurmallah, Ghamdi
AU - Jansen, Martijn A.G.
AU - Nelissen, Laurent N.I.H.
PY - 2012/9/4
Y1 - 2012/9/4
N2 - The present invention relates to a process for the emulsifier-free preparation of water expendable polymer beads, which process comprises the steps of a) providing an emulsifier-free starting composition comprising styrene and a polyphenylene ether resin, b) prepolymerizing the starting composition to obtain a prepolymer composition, c) adding an aqueous dispersion of a modifier-free nanoclay to the prepolymer composition to obtain an inverse emulsion, d) suspending the inverse emulsion obtained by step c) in an aqueous medium to yield an an aqueous suspension of suspended droplets and e) polymerizing the monomers in the droplets of the suspension obtained by step d) to obtain the water expendable polymer beas.
AB - The present invention relates to a process for the emulsifier-free preparation of water expendable polymer beads, which process comprises the steps of a) providing an emulsifier-free starting composition comprising styrene and a polyphenylene ether resin, b) prepolymerizing the starting composition to obtain a prepolymer composition, c) adding an aqueous dispersion of a modifier-free nanoclay to the prepolymer composition to obtain an inverse emulsion, d) suspending the inverse emulsion obtained by step c) in an aqueous medium to yield an an aqueous suspension of suspended droplets and e) polymerizing the monomers in the droplets of the suspension obtained by step d) to obtain the water expendable polymer beas.
UR - https://worldwide.espacenet.com/patent/search/family/046796525/publication/WO2013034276A1?q=WO%202013034276
M3 - Patent publication
M1 - WO2013/034276
Y2 - 2012/09/04
ER -