US20030195291A1
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US
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Process for preparing modified pigments
Assignee: Cabot Corp
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Filing: 2002-04-12
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Granted: —
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Expires: 2022-04-12
Abstract
Abstract A process for preparing a modified pigment having attached at least one organic group is described. This process comprises the step of reacting a dried mixture comprising a pigment having attached at least one reactive group and a modifying agent. The dried mixture is reacted under high intensity mixing conditions for a time and temperature sufficient to form the modified pigment.
Inventors
- 👤 Melanie Lamprey
- 👤 John Mathew
- 👤 Paul Palumbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:22
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2006/00; C01P2006/22
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
54 words
1 . A process for preparing a modified pigment having attached at least one organic group comprising the step of reacting a dried mixture comprising a pigment having attached at least one reactive group and a modifying agent under high intensity mixing conditions for a time and temperature sufficient to form the modified pigment.
Claim 2
Dependent Claim
54 words
1 . A process for preparing a modified pigment having attached at least one organic group comprising the step of reacting a dried mixture comprising a pigment having attached at least one reactive group and a modifying agent under high intensity mixing conditions for a time and temperature sufficient to form the modified pigment.
Claim 3
Dependent Claim
20 words
2 . The process of claim 1 , wherein the dried mixture has a viscosity of greater than 10,000 centipoise.
Claim 4
Dependent Claim
15 words
3 . The process of claim 2 , wherein the dried mixture is a powder.
Claim 5
Dependent Claim
47 words
4 . The process of claim 1 , wherein the dried mixture is prepared by: i) combining, in any order, a dispersion comprising the pigment having attached at least one reactive group and the modifying agent to produce a wet mixture, and ii) drying the wet mixture.
Claim 6
Dependent Claim
15 words
5 . The process of claim 4 , wherein the dispersion is an aqueous dispersion.
Claim 7
Dependent Claim
15 words
6 . The process of claim 4 , wherein the dispersion is a non-aqueous dispersion.
Claim 8
Dependent Claim
17 words
7 . The process of claim 4 , wherein the modifying agent is in a liquid form.
Claim 9
Dependent Claim
17 words
8 . The process of claim 4 , wherein the modifying agent is in a solid form.
Claim 10
Dependent Claim
52 words
9 . The process of claim 1 , wherein the dried mixture is prepared by: i) combining, in any order, a dry form of the pigment having attached at least one reactive group and a liquid form of the modifying agent to form a wet mixture, and ii) drying the wet mixture.
Claim 11
Dependent Claim
40 words
10 . The process of claim 1 , wherein the dried mixture is prepared by combining, in any order, a dry form of the pigment having attached at least one reactive group and a solid form of the modifying agent.
Claim 12
Dependent Claim
48 words
11 . The process of claim 1 , wherein the pigment comprises a blue pigment, a black pigment, a brown pigment, a cyan pigment, a green pigment, a white pigment, a violet pigment, a magenta pigment, a red pigment, an orange pigment, a yellow pigment, or mixtures thereof.
Claim 13
Dependent Claim
14 words
12 . The process of claim 1 , wherein the pigment is carbon black.
Claim 14
Dependent Claim
16 words
13 . The process of claim 1 , wherein the reactive group comprises a nucleophilic group.
Claim 15
Dependent Claim
16 words
14 . The process of claim 1 , wherein the reactive group comprises an electrophilic group.
Claim 16
Dependent Claim
60 words
15 . The process of claim 1 , wherein the reactive group comprises at least one carboxylic acid or ester, acid chloride, sulfonyl chloride, acyl azide, isocyanate, ketone, aldehyde, anhydride, amide, imide, imine, α,β-unsaturated ketone, aldehyde, or sulfone, alkyl halide, epoxide, alkyl sulfonate or sulfate, amine, hydrazine, alcohol, thiol, hydrazide, oxime, triazene, carbanion, aromatic compound, or salts or derivatives thereof.
Claim 17
Dependent Claim
23 words
16 . The process of claim 1 , wherein the reactive group comprises at least one ionic group, ionizable group, or mixtures thereof.
Claim 18
Dependent Claim
24 words
17 . The process of claim 1 , wherein the reactive group comprises a carboxylic acid group, an alkyl sulfate group, or salts thereof.
Claim 19
Dependent Claim
19 words
18 . The process of claim 1 , wherein the reactive group comprises an amine group or salt thereof.
Claim 20
Dependent Claim
19 words
19 . The process of claim 18 , wherein the amine group is a benzylamine, phenyethylamine, phenyleneamine, or aminoalkylamine.
Claim 21
Dependent Claim
16 words
20 . The process of claim 1 , wherein the reactive group is a polymeric group.
Claim 22
Dependent Claim
32 words
21 . The process of claim 20 , wherein the polymeric group is a polyamine group, a polyalkylene oxide group, a polyol group, a polyacid group, or a salt or derivative thereof.
Claim 23
Dependent Claim
33 words
22 . The process of claim 21 , wherein the polyacid group is an polyacrylic acid group, a polymethacrylic acid group, a poly(styrene-acrylic acid) group, a poly(styrene-methacrylic acid) group, or styrene-maleic acid group.
Claim 24
Dependent Claim
23 words
23 . The process of claim 21 , wherein the polyamine group is a polyethyleneimine group, a pentaethylenehexamine group, or a polyamidoamine group.
Claim 25
Dependent Claim
61 words
24 . The process of claim 1 , where in the modifying agent comprises at least one carboxylic acid or ester, acid chloride, sulfonyl chloride, acyl azide, isocyanate, ketone, aldehyde, anhydride, amide, imide, imine, α,β-unsaturated ketone, aldehyde, or sulfone, alkyl halide, epoxide, alkyl sulfonate or sulfate, amine, hydrazine, alcohol, thiol, hydrazide, oxime, triazene, carbanion, aromatic compound, or salts or derivatives thereof.
Claim 26
Dependent Claim
22 words
25 . The process of claim 24 , wherein the modifying agent comprises a carboxylic acid, an amine, or a salt thereof.
Claim 27
Dependent Claim
15 words
26 . The process of claim 1 , wherein the modifying agent is a polymer.
Claim 28
Dependent Claim
27 words
27 . The process of claim 26 , wherein the polymer is a polyamine, a polyalkylene oxide, a polyol, a polyacid, or a salt or derivative thereof.
Claim 29
Dependent Claim
14 words
28 . The process of claim 26 , wherein the polymer is a polyamine.
Claim 30
Dependent Claim
14 words
29 . The process of claim 26 , wherein the polymer is a polyacid.
Claim 31
Dependent Claim
20 words
30 . The process of claim 26 , wherein the polymer is a copolymer of acrylic acid or methacrylic acid.
Claim 32
Dependent Claim
56 words
31 . The process of claim 1 , wherein the modified pigment is prepared in a high intensity mixer selected from the group consisting of: single or double planetary mixers, dual shaft planetary mixers, helical mixers, double arm kneading mixers, high intensity mixers, two roll mixers, three roll mixers, single screw extruders, and twin screw extruders.
Claim 33
Dependent Claim
26 words
32 . The process of claim 1 , wherein the time sufficient to form the modified pigment is between about 0.1 minutes and about 300 minutes.
Claim 34
Dependent Claim
26 words
33 . The process of claim 1 , wherein the temperature sufficient to form the modified pigment is between about 25° C. and about 250° C.
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