Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
1999-04-28
2001-03-13
Klemanski, Helene (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031470, C106S031490, C106S031590, C106S031750, C106S031770, C106S031780, C106S031890
Reexamination Certificate
active
06200369
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is directed to ink compositions. More specifically, the present invention is directed to compositions suitable for use in ink jet printing processes. One embodiment of the present invention is directed to an ink composition which comprises (a) water; (b) a colorant; and (c) an additive selected from the group consisting of (1) diamido quaternary dialkyl ammonium salts of the formula
wherein R
1
and R
2
each, independently of the other, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from 10 to about 26 carbon atoms, R
3
and R
4
each, independently of the other, are alkyl groups with from 1 to about 6 carbon atoms, alkoxy groups with from 1 to about 6 carbon atoms, or benzyl groups, R
5
and R
6
are each, independently of the other, an alkylene group with from 1 to about 3 carbon atoms, and X is an anion, wherein n represents the charge on the anion; (2) bitail quaternary tetraalkyl ammonium salts of the formula
wherein R
1
and R
2
each, independently of the other, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms, R
3
and R
4
each, independently of the other, are benzyl groups, alkyl groups, or substituted alkyl groups with from 1 to about 6 carbon atoms, and X is an anion, wherein n represents the charge on the anion; (3) bitail imidazolium salts of the formula
wherein R
1
and R
2
each, independently of the other, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms, R
3
is an alkylene group with from 1 to about 3 carbon atoms, R
4
is a hydrogen atom, a methyl group, or an ethyl group, and X is an anion, wherein n represents the charge on the anion; (4) bitail biomimetic phospholipid salts of the formula
wherein each R, independent of the other is an alkyl group with from about 12 to about 24 carbon atoms, an arylalkyl group with from about 14 to about 26 carbon atoms, an alkylamidopropyl group with from about 8 to about 24 carbon atoms, a perfluoroalkyl group with from about 8 to about 24 carbon atoms, an arylperfluoroalkyl group with from about 10 to about 26 carbon atoms, or a perfluoroalkylamidopropyl group with from about 8 to about 24 carbon atoms, G is a cation, and A is an anion; (5) bisquaternary salts of the formula
wherein each R
1
, independently of the other, is an alkyl group with from about 12 to about 24 carbon atoms, each R
2
, independently of the others, is —CH
3
or —CH
2
CH
2
OH, B is
and X is an anion, wherein n represents the charge on the anion; (6) bisquaternary salts of the formula
wherein R
1
, R
2
, R
3
, and R
4
each, independently of the others, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms, R
5
and R
6
each, independently of the other, are alkyl groups or substituted alkyl groups with from 1 to about 4 carbon atoms, m, p, q, and r are each integers representing the number of repeat units, and are each from 1 to about 10, A is an alkylene group with from 1 to about 4 carbon atoms, and X is an anion, wherein n represents the charge on the anion; (7) bisquaternary salts of the formula
wherein R
1
is an alkyl group with from about 12 to about 24 carbon atoms, an arylalkyl group With from about 14 to about 26 carbon atoms, a perfluoroalkyl group with from about 8 to about 24 carbon atoms, or an arylperfluoroalkyl group with from about 10 to about 26 carbon atoms, A is an alkylene group with from 1 to about 6 carbon atoms, and X is an anion, wherein n represents the charge on the anion; (8) bisquaternary salts of the formula
wherein R
1
and R
2
each, independently of the others, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms, R
3
and R
4
each, independently of the other, are alkyl groups or substituted alkyl groups with from 1 to about 4 carbon atoms, A is an alkylene group with from 1 to about 3 carbon atoms, and X is an anion, wherein n represents the charge on the anion; (9) -hydroxyethyl ethylene diamine fatty acids of the formulae
wherein R
1
, R
2
, and R
3
each, independently of the others, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms; (10) polyammonium salts of the formula
wherein R
1
is an alkyl group or a substituted alkyl group with from about 12 to about 26 carbon atoms, an arylalkyl group with from about 14 to about 26 carbon atoms, a perfluoroalkyl group with from about 8 to about 24 carbon atoms, or an arylperfluoroalkyl group with from about 10 to about 26 carbon atoms, R
2
, R
3
, R
4
, R
5
, and R
6
each, independently of the others, is a methyl group or a hydroxyethyl group, m is an integer representing the number of repeating (—CH
2
) units, and is from about 2 to about 6, p is an integer representing the number of repeating ammonium groups, and is from about 1 to about 5, and X is an anion, wherein n represents the charge on the anion; (11) ethoxylated polyamine compounds of the formula
wherein R
1
and R
2
each, independently of the others, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms, m is an integer representing the number of repeating (—CH
2
) units, and is from 1 to about 4, and n is an integer representing the number of repeating amine units, and is from 1 to about 4; (12) biquaternary pyridinium salts of the formula
wherein R
1
and R
2
each, independently of the others, are alkyl groups with from about 12 to about 24 carbon atoms, arylalkyl groups with from about 14 to about 26 carbon atoms, perfluoroalkyl groups with from about 8 to about 24 carbon atoms, or arylperfluoroalkyl groups with from about 10 to about 26 carbon atoms, A is an alkylene group with from 1 to about 6 carbon atoms, and X is an anion, wherein n represents the charge on the anion; (13) aminofunctional polyorganosiloxanes of the general formula
wherein R is an alkyl or arylalkyl group and p and n are each integers representing the number of repeat monomer units; and (14) mixtures thereof.
Ink jet printing systems generally are of two types: continuous stream and drop-on-demand. In continuous stream ink jet systems, ink is emitted in a continuous stream under pressure through at least one orifice or nozzle. The stream is perturbed, causing it to break up into droplets at a fixed distance from the orifice. At the break-up point, the droplets are charged in accordance with digital data signals and passed through an electrostatic field which adjusts the trajectory of each droplet in order to direct it to a gutter for recirculation or a specific location on a recording medium. In drop-on-demand systems, a droplet is expelled from an orifice directly to a position on a recording medium in accordance with digital data signals. A droplet is not formed or expelled unless it is to be placed on the recording medium.
Since drop-on-deman
Byorick Judith L.
Klemanski Helene
Xerox Corporation
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