Polymer latexes with core-shell morphology
US6203973A · kind A · utility
18Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/36
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.