Back to results
US 2007/0181037 A1Published application
Modified pigment-based inks and method of making modified pigment-based inks
AssigneeHewlett-Packard Development Compan, L.P.
InventorSundar Vasudevan
Life of this patent
Estimating the term…
Abstract
Briefly described, embodiments of this disclosure include chemicals, modified pigments, and methods of preparing a modified pigment.
Claims9
A modified pigment having a structure
- wherein R1 is selected from a group consisting of NHR2 and
- and wherein R2 is selected from the group consisting of a hydrogen atom, a polymer, S-ethylthiopsuedourea, an amino acid, an oligopeptide and
A method of preparing a modified pigment, comprising:
- (a) providing a chemical having Structure Q2:
- where R1 is NO2;
- (b) substituting Br with
- where R2 is an alkyl selected from methyl, ethyl, benzyl, an alkyl with 1 to 30 carbon atoms, and combinations thereof;
- (c) converting R1 to NH2;
- (d) coupling the structure resulting from step (c) to a pigment through diazonium chemistry to yield Structure K
3 more elements
A method of preparing a modified pigment, comprising:
- (a) providing a chemical having structure E
- (b) producing a composition from structure E by substituting one hydrogen atom in each —NH2 group with a
- (c) producing a chemical having Structure H by coupling the structure resulting from step (b) to a pigment using diazonium chemistry
A method of preparing a modified pigment, comprising:
- (a) providing a chemical having structure F
- where R1 is a hydrogen atom;
- (b) producing a composition from structure F by coupling structure F to a pigment using diazonium chemistry;
- (c) making a substitution in the structure resulting from step (b) so that R1 is
1 more element
Dependencies are inferred from the claim text.