Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1978-09-01
1979-10-30
Turer, Richard
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415914, 20415915, 20415916, 20415919, 250492B, 428402, C08F 246
Patent
active
041727762
ABSTRACT:
A method for producing polymers in powdered form is disclosed, including the formation of a finely divided solvent-free spray of a liquid monomer of the polymer which is to be produced, or of a reactive unsaturated polymer, and the passage of that spray 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 method develops a charge in the particles of the finely divided spray and passes the charged spray through a charged yoke to ensure particle separation and 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 method, 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. Furthermore, the polymerized powdered products produced by this method are also disclosed.
REFERENCES:
patent: 3132966 (1964-05-01), Hughes et al.
patent: 3440084 (1969-04-01), Turner
patent: 3522226 (1970-07-01), Wright
patent: 3644305 (1972-02-01), Frisque et al.
patent: 4020256 (1977-04-01), Zweigle et al.
Kemtec, Inc.
Turer Richard
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