Title of Invention	MODIFIED COLORED PIGMENTS AND INK JET INKS, INKS AND COATINGS CONTAINING MODIFIED COLORED PIGMENTS
Abstract	A modified colored pigment is described which comprises colored pigment having attached at least one organic group. The organic group comprises a) at least one aromatic group or a C<SUB>1-C<SUB>12 alkyl group and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group. The aromatic group or the C<SUB>1-C<SUB>12 alkyl group of the organic group is directly attached to the pigment and the organic group is present at a treatment level of from about 0.10 to about 4.0 micromoles/m<SUP>2 of the carbon used based on nitrogen surface area of the carbon. Also described are aqueous and non-aqueous inks and coatings and ink jet ink compositions containing the modified colored pigment. A method to increase the flow of an ink, as measured by glass plate flow, by incorporating the modified colored pigment as part of the ink is also disclosed as well as a method to improve the waterfastness of a print imaged by an ink compositon.

Title of Invention

MODIFIED COLORED PIGMENTS AND INK JET INKS, INKS AND COATINGS CONTAINING MODIFIED COLORED PIGMENTS

Abstract

A modified colored pigment is described which comprises colored pigment having attached at least one organic group. The organic group comprises a) at least one aromatic group or a C1-C12 alkyl group and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group. The aromatic group or the C1-C12 alkyl group of the organic group is directly attached to the pigment and the organic group is present at a treatment level of from about 0.10 to about 4.0 micromoles/m2 of the carbon used based on nitrogen surface area of the carbon. Also described are aqueous and non-aqueous inks and coatings and ink jet ink compositions containing the modified colored pigment. A method to increase the flow of an ink, as measured by glass plate flow, by incorporating the modified colored pigment as part of the ink is also disclosed as well as a method to improve the waterfastness of a print imaged by an ink compositon.

Full Text

Documents:

1285-mas-1997 abstract.pdf

1285-mas-1997 claims granted.pdf

1285-mas-1997 correspondence others.pdf

1285-mas-1997 correspondence po.pdf

1285-mas-1997 description (complete) granted.pdf

1285-mas-1997 form-19.pdf

1285-mas-1997 form-2.pdf

1285-mas-1997 form-4.pdf

1285-mas-1997 petitions.pdf

1285-mas-1997 power of attorney.pdf

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Patent Number

217232

Indian Patent Application Number

1285/MAS/1997

PG Journal Number

21/2008

Publication Date

23-May-2008

Grant Date

26-Mar-2008

Date of Filing

13-Jun-1997

Name of Patentee

CABOT CORPORATION

Applicant Address

75 STATE STREET, BOSTON, MASSACHUSETTS 02109 - 1806,

Inventors:

#	Inventor's Name	Inventor's Address
1	JOSEPH E JOHNSON	9 AYER STREET, NASHUA, NEW HAMPSHIRE 03060,
2	JAMES A BELMONT	8 CONANT STREET, ACTON, MASSACHUSETTS 07120,

PCT International Classification Number

C 09 D 11/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	08/783,411	1997-01-14	U.S.A.
2	08/663,707	1996-06-14	U.S.A.