Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1979-07-23
1981-06-16
Wong, Jr., Harry
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
20415922, 250531, B32B 516
Patent
active
042738318
ABSTRACT:
Apparatus for producing polymers in powdered form is disclosed, including means for forming a finely divided solvent-free spray of a liquid monomer of the polymer which is to be produced, or of a reactive unsaturated polymer. The spray passes through a high energy electron beam in an inert atmosphere in order to polymerize the monomer or reactive unsaturated polymer of the spray while in the spray form and produce a powdered polymer product. The preferred apparatus develops a charge on the particles of the finely divided spray and passes the charged spray through a similarly charged yoke to ensure particle separation and to compress the pattern of the spray prior to passage through the electron beam, which is preferably in the form of a curtain. In a preferred embodiment, a polymerized powdered paint is produced by this apparatus, and the liquid monomer and/or reactive unsaturated polymer may be compounded with color, initiators, pigments or other materials prior to polymerization of a finely divided spray of that liquid.
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Modern Plastics, Jan. 1979, pp. 72-74, "New Electron Systems Do More Jobs Faster, and With Big Energy Savings".
Kemtec, Inc.
Wong, Jr. Harry
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