Method of manufacturing modified particles
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United States of America Patent
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Feb 27, 2001
Grant Date -
N/A
app pub date -
Nov 12, 1998
filing date -
Nov 14, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In the present method of manufacturing modified particles, a saturated vapor of a monomer B is produced in a condensing chamber, and then particles containing a monomer A, which differs from the monomer B and is polymerizable therewith, are introduced, along with an inert gas, into the condensing chamber through a particle intake. Then, a super-saturated vapor of the monomer B is created by reducing pressure using a pressurizing/depressurizing opening, thereby condensing the monomer B on the surface of the particles, and causing a polymerization reaction between the monomer A and the monomer B. With this method, spherical modified particles of uniform diameter, which include a polymer of the monomers A and B, can be obtained in a short time, by means of simple operations.
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