Polymer latexes with core-shell morphology
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United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
Mar 25, 1999
filing date -
Mar 25, 1999
priority date (Note) -
Expired
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Abstract
The present invention is a polymer latex that includes polymer particles having a core portion and a shell portion. The core portion contains polymerized hydrophobic ethylenically unsaturated monomers with a water solubility less than 1% at room temperature. The shell portion contains polymerized monomers defined by formula (I) ##STR1## wherein X is O or NH, or NCH.sub.3, R.sub.1 and R.sub.2 are H, CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, or C.sub.4 H.sub.9, R.sub.3 and R.sub.4 are H or CH.sub.3, n1 and n2 are integers, n1 is from 1 to 4, n2 is from 1 to 20. The polymer particles having a size of less than 50 nm.
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