US 9,725,598 B2 · Modified colorants and inkjet ink compositions comprising modified colorants

Abstract

The present invention relates to a modified colorant comprising a colorant having at least one polymer attached or adsorbed thereto. The polymer comprises at least one functional group, and various embodiments of the functional group are disclosed. For each of these embodiments, preferably the functional group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions. Thus, the present invention further relates to an inkjet ink composition comprising a) a liquid vehicle, b) at least one colorant, and c) at least one polymer comprising at least one functional group as described herein.

Claims27

Dependent claims

A modified colorant comprising a pigment having attached at least one polymeric group, wherein the polymeric group comprises a polymer having at least one functional group having a calcium index value greater than a calcium binding index value of phenylphosphonic acid,

wherein the at least one functional group comprises at least two phosphonic acid groups, partial esters thereof, or salts thereof, and wherein the at least one functional group is selected from:
at least one geminal bisphosphonic acid group;
at least one group having the formula —N—[(CH2)m(PO3H2)]2, wherein m, which can be the same or different, is 1 to 3;
and at least one group having the formula —CR═C(PO3H2)2, wherein R is H, a C1-C6 alkyl group, or an aryl group.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

11/590,170Filed 31 Oct 2006 · us provisional application

Priority

31 Oct 2005

Published

US 2007/0100023 A13 May 2007

Granted

8 Aug 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification40 codes

C09B 68/41
Characterised by the chemical nature of the attached groups: polymers attached to the pigment surface
B82Y 30/00
Nanotechnology for materials or surface science
C08K 5/0041
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: optical brightening agents, organic pigments
C09B 67/0001
Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents…

Family

Application60/731,721Us provisional application · filed 31 Oct 2005

Application60/815,305Us provisional application · filed 21 Jun 2006

Application60/815,327Us provisional application · filed 21 Jun 2006

Application60/815,326Us provisional application · filed 21 Jun 2006

US 2007/0100023 A1Pre-grant publication · published 3 May 2007

US 9,725,598 B2This patent

From the US filing history. Foreign family members aren’t listed.

Modified colorants and inkjet ink compositions comprising modified colorants

Life of this patent

Modified colorants and inkjet ink compositions comprising modified colorants

Life of this patent

Abstract

Claims27