US4836851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyes containing polyhydroxyl groups for ink-jet printing inks
Assignee: HP Inc
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Filing: 1988-02-11
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Granted: 1989-06-06
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Expires: 2008-02-11
Abstract
Abstract A dye used in ink compositions for ink-jet printing comprises an aromatic dye molecule having attached to the backbone thereof from one to four polyhydroxyl-substituted groups having the formula selected from the group consisting of: (a) CH 2 OH-(CHOH) n CH 2 O-, where n=2 to 10; (b) O n-1 C n H 2n-1 -O-, where n=5 to 7; and (c) C 6n H 5n+1 O 5n -O-, where n=1 to about 100. These dyes have improved water solubility and improved interaction with paper.
Inventors
- 👤 Norman E. Pawlowski
- 👤 Steven J. Bares
- 👤 Loren E. Johnson
- 👤 Suraj L. Hindagolla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:43
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/08; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
An ink composition suitable for use in ink-jet printing comprising: (a) a vehicle comprising about 96 to 50 percent water and about 4 to 50 percent water-miscible organic solvent; and (b) a dye comprising an aromatic dye molecule having attached to the backbone thereof from one to four polyhydroxyl-substituted groups having the formula selected from the group consisting of: (1) CH 2 OH-(CHOH) n CH 2 O--, where n=2 to 10; (2) O n-1 C n H 2n-1 --O--, where n5 to 7; and (3) C 6n H 5n+1 O 5n --O--, where n=1 to about 100.
Claim 2
Dependent Claim
97 words
An ink composition suitable for use in ink-jet printing comprising: (a) a vehicle comprising about 96 to 50 percent water and about 4 to 50 percent water-miscible organic solvent; and (b) a dye comprising an aromatic dye molecule having attached to the backbone thereof from one to four polyhydroxyl-substituted groups having the formula selected from the group consisting of: (1) CH 2 OH-(CHOH) n CH 2 O--, where n=2 to 10; (2) O n-1 C n H 2n-1 --O--, where n5 to 7; and (3) C 6n H 5n+1 O 5n --O--, where n=1 to about 100.
Claim 3
Dependent Claim
25 words
The ink composition of claim 1 wherein said dye is present in the amount of about 2 to 12 percent by weight of said vehicle.
Claim 4
Dependent Claim
72 words
The ink composition of claim 1 wherein said dye comprises an aromatic dye molecule selected from the group consisting of Reactive Black 1, Reactive Black 31, Black MX-CWA, Solvent Black 2, Direct Black 19, C.I. Reactive Blue 19, Reactive Blue 4, Reactive Blue 7, Reactive Blue 81, Reactive Red 1, Reactive Red 4, Reactive Red 17, Reactive Red 24, Reactive Yellow 1, Reactive Yellow 2, Reactive Yellow 3, and Acid Yellow 66.
Claim 5
Dependent Claim
40 words
The ink composition of claim 1 wherein said polyhydroxyl-substituted group is derived from a compound selected from the group consisting of sorbitol, mannitol, adonitol, arabitol, threitol, erythritol, inositol, ribitol, glucose, fructose, sucrose, trehalose, raffinose, gluconic acid, glucaric acid, and amylopectin.
Claim 6
Dependent Claim
36 words
The ink composition of claim 1 wherein said organic solvent is selected from the group consisting of diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, monomethyl ether, 1,2-dimethoxypropane, methanol, formamide, sulfolane, N-methyl-2pyrrolidone, propylene carbonate, and oxidipropionitrile.
Claim 7
Dependent Claim
19 words
The ink composition of claim 1 wherein said organic solvent and said water are present in substantially equal proportions.
Claim 8
Dependent Claim
31 words
An ink composition of claim 1 wherein the polyhydroxyl-substituted groups on the backbone of the dye molecule have the formula CH 2 OH-(CHOH) n CH 2 O--, where n=2 to 10.
Claim 9
Dependent Claim
31 words
An ink composition of claim 1 wherein the polyhydroxyl-substituted groups on the backbone of the dye molecule have the formula O n-1 C n H 2n-1 --O--, where n=5 to 7.
Claim 10
Dependent Claim
27 words
An ink composition of claim 1 wherein the polyhydroxyl-substituted groups on the backbone of the dye molecule have the formula C 6n H 5n+1 O 5n--O-- .
References Cited (Backward Citations)
US4666519A
Cited
US4703113A
Cited
US4735657A
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US4738721A
Cited
US4726844A
Cited
US4705567A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |