Production of monodisperse, polymeric microspheres

Details Production of monodisperse, polymeric microspheres Production of monodisperse, polymeric microspheres

1986-04-28

1990-05-29

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing electrical energy

264 5, 264 9, 264 13, B28B 910

Patent

active

049294008

ABSTRACT:
Very small, individual polymeric microspheres with very precise size and a wide variation in monomer type and properties are produced by deploying a precisely formed liquid monomer droplet, suitably an acrylic compound such as hydroxyethyl methacrylate into a containerless environment. The droplet which assumes a spheroid shape is subjected to polymerizing radiation such as ultraviolet or gamma radiation as it travels through the environment. Polymeric microspheres having precise diameters varying no more than plus or minus 5 percent from an average size are recovered. Many types of fillers including magnetic fillers may be dispersed in the liquid droplet.

REFERENCES:
patent: 4267234 (1981-05-01), Rembaum
patent: 4267235 (1981-05-01), Rembaum et al.
patent: 4339337 (1982-07-01), Tricot et al.
patent: 4438239 (1984-03-01), Rembaum et al.
patent: 4553917 (1985-11-01), Lee
patent: 4623706 (1986-11-01), Timm et al.

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