US4468255A
Expired / Lapsed
US
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Rheology modifiers for arylide yellow pigment dispersions and pigment dispersions containing same
Assignee: Sun Chemical Corp
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Filing: 1983-08-10
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Granted: 1984-08-28
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Expires: 2003-08-10
Abstract
Abstract The flow and handling characteristics of arylide yellow and orange pigment dispersions are improved by incorporating in them a small amount of a rheology modifier that is the product obtained by reacting an arylide yellow or orange pigment with a primary diamine and a glycidyl ether.
Inventors
- 👤 Russell J. Schwartz
- 👤 Theodore Sulzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:51
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0046
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
72 words
A compound having the structural formula ##STR8## or the structural formula ##STR9## wherein X represents a divalent aliphatic group having 4 to 54 carbon atoms; an aromatic group; or ##STR10## wherein R' represents hydrogen, alkyl, or aralkyl and m is an integer in the range of 4 to 40; W, Y, and Z each represents an aromatic group; and R represents an aliphatic or aromatic group having 4 to 30 carbon atoms.
Claim 2
Dependent Claim
72 words
A compound having the structural formula ##STR8## or the structural formula ##STR9## wherein X represents a divalent aliphatic group having 4 to 54 carbon atoms; an aromatic group; or ##STR10## wherein R' represents hydrogen, alkyl, or aralkyl and m is an integer in the range of 4 to 40; W, Y, and Z each represents an aromatic group; and R represents an aliphatic or aromatic group having 4 to 30 carbon atoms.
Claim 3
Dependent Claim
20 words
The compound of claim 1 that has the structural formula ##STR11## wherein X, Z, and R have the aforementioned significance.
Claim 4
Dependent Claim
21 words
The compound of claim 1 that has the structural formula ##STR12## wherein W, X, Z, and R have the aforementioned significance.
Claim 5
Dependent Claim
36 words
A composition that comprises the compound of claim 2 and a small amount of a compound having the structural formula A═N--X--N═A wherein A represents the residue of a monoarylide pigment and X has the aforementioned significance.
Claim 6
Dependent Claim
51 words
A composition that comprises the compound of claim 3 and a small amount of an oligomeric product having the structural formula ##STR13## wherein B represents the residue of a diarylide pigment, p is an integer in the range of 1 to 4, and R, W, and X have the aforementioned significance.
Claim 7
Dependent Claim
96 words
A process for the production of the compounds of claim 1 that comprises the steps of (a) heating equivalent amounts of an arylide yellow pigment with a primary diamine at a temperature in the range of about 80° C. to 250° C. until substantially all of the water evolved during the reaction has been removed from the reaction mixture and then (b) heating the reaction mixture with an equivalent amount of a glycidyl ether at a temperature in the range of about 100° C. to 220° C. until substantially all of the glycidyl ether has reacted.
Claim 8
Dependent Claim
15 words
The process of claim 6 wherein the arylide yellow pigment is a monarylide yellow pigment.
Claim 9
Dependent Claim
15 words
The process of claim 6 wherein the arylide yellow pigment is a diarylide yellow pigment.
Claim 10
Dependent Claim
27 words
The process of claim 6 wherein the reaction of step (a) is carried out at a temperature in the range of about 150° C. to 190° C.
Claim 11
Dependent Claim
22 words
The process of claim 6 wherein the reaction of step (a) is carried out in the presence of an inert organic solvent.
Claim 12
Dependent Claim
19 words
The process of claim 6 wherein the reaction of step (a) is carried out in the presence of xylene.
Claim 13
Dependent Claim
60 words
A pigment dispersion having improved rheological properties that comprises 10 percent to 70 percent by weight of an arylide yellow or orange pigment, 20 percent to 85 percent by weight of an organic vehicle, and 1.5 percent to 15 percent by weight of rheology modifier that is a compound having one of the structural formulas set forth in claim 1.
Claim 14
Dependent Claim
20 words
The pigment dispersion of claim 12 wherein the rheology modifier is a compound having the structural formula of claim 2.
Claim 15
Dependent Claim
20 words
The pigment dispersion of claim 12 wherein the rheolgoy modifier is a compound having the structural formula of claim 3.
Claim 16
Dependent Claim
81 words
A method of improving the rheological properties of an arylide yellow or orange pigment dispersion that comprises about 10 percent to 70 percent by weight of an arylide pigment and about 20 percent to 85 percent by weight of an organic vehicle that comprises incorporating in the pigment dispersion about 3 percent to 10 percent, based on the weight of pigment in the dispersion, of a rheology modifier that is a compound having one of the structural formulas of claim 1.
Claim 17
Dependent Claim
19 words
The method of claim 15 wherein the rheology modifier is a compound having the structural formula of claim 2.
Claim 18
Dependent Claim
19 words
The method of claim 15 wherein the rheology modifier is a compound having the structural formula of claim 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |