Process for producing particulate silicon encapsulated products

Details Process for producing particulate silicon encapsulated products Process for producing particulate silicon encapsulated products

1991-05-06

1992-10-20

Lovering, Richard D.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

2523151, 264 43, 264 433, 264 47, 424 70, 424 71, 507902, 514965, 525936, 526922, A61K 7075, B01J 1318

Patent

active

051569140

ABSTRACT:
This invention relates to an anhydrous, liquid phase process for entrapping droplets of a silicon compound in an organic polymer which involves precharging a reactor at between about 50.degree. and about 80.degree. C. with a polymerization initiator and a non-polar solvent in which the silicon compound is soluble; adding to the precharged reactor, silicon compound under vigorous agitation and gradually introducing from about 50 to about 99 wt. %, based on silicon compound, of a polymerizably precipitatable, aliphatically unsaturated monomer at a controlled rate; continuously polymerizing the monomer component, under vigorous agitation with the silicon compound, at between about 50.degree. and about 165.degree. C. while maintaining a desired monomer level of not more than 10% in the reactor and recovering a solid particulate product of silicon droplets entrapped in said polymerized monomer.

REFERENCES:
patent: 3551346 (1970-12-01), Breen et al.
patent: 3704264 (1972-11-01), Gorman
patent: 4097404 (1978-06-01), Brown
patent: 4677003 (1987-06-01), Redlich et al.
patent: 4798691 (1989-01-01), Kasai et al.
patent: 4880617 (1989-11-01), Chromcek et al.

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