Polymer microspheres containing latent colorants and method of preparation
US7148280B2 · kind B2 · utility
2Cited by
15References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0097
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a polymer microsphere comprising at least one polymer and at least one bound latent colorant, wherein the microsphere is stabilized by at least one stabilizing polymer. The invention also includes a method of preparing polymer microspheres comprising combining latent colorant, ethylenically unsaturated monomer, stabilizing polymer, and an initiator in solvent and initiating polymerization to form a polymeric microsphere stabilized by a stabilizing polymer bound to the surface of the polymeric microsphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.