Polymerizable dye-monomer conjugates for encapsulating pigment particles
US7868059B2 · kind B2 · utility
1Cited by
41References
13Claims
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Key dates
| Filing date | Jul 27, 2007 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Jul 27, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymeric colorant comprises a polymer-encapsulated pigment, wherein the polymer has a molecular weight in the range of 2,000 to 2,000,000 g/mole (2 to 2,000 kDa) and is a polymerization product of at least one dye-monomer conjugate. In some instances, a comonomer is added. The polymeric colorant is made by a method that comprises polymerizing at least one dye-monomer conjugate in a mixture containing pigment particles, to produce a polymerization product wherein the pigment particles are encapsulated by the polymerization product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.