Production of polystyrene reflector beads

Details Production of polystyrene reflector beads Production of polystyrene reflector beads

1980-05-05

1981-12-01

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

521 56, 521 60, 526346, 528489, C08F 624

Patent

active

043037844

ABSTRACT:
Many reflector beads have been made from plastics more costly then polystyrene. By the present invention, water white, crystal clear polystyrene beads are prepared from styrene by polymerization in an aqueous solution having a concentration of from about 2.5 to about 6 molar inorganic solute, at conditions corresponding to production of uniformly sized polystyrene beads of the type ordinarily used as precursor for expandable polystyrene beads. The thus produced beads are rinsed with water and then dried to provide reflector beads.

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