Monodisperse polymer particles and dispersions thereof
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United States of America Patent
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Jul 10, 1984
Issued Date -
N/A
app pub date -
Mar 30, 1982
filing date -
Feb 21, 1978
priority date (Note) -
Expired
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Abstract
The invention provides monodisperse polymer particles and dispersions thereof, said particles having a diameter of preferably 5 .mu.m or more. Such polymer dispersions are prepared by in a first step preparing a dispersion of smaller monodisperse polymer particles containing one or more materials having a very low solubility in water, and a relatively low molecular weight, then in a second step adding a partly water-soluble monomer which diffuses into the particles from the first step, and then effecting polymerization.
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