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US6040358A
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Ink jet inks containing linear polymer additives
Assignee: EIDP Inc
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Filing: 1996-12-27
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Granted: 2000-03-21
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Expires: 2016-12-27
Abstract
Abstract Inks for ink jet printers contain an aqueous carrier medium; a colorant that is insoluble in the aqueous carrier, a polymer dispersant; and a linear polymer additive selected from the group consisting of an water soluble, elastomeric ABA block polymer comprising an elastomeric B block and non-elastomeric A blocks; anionic polymers selected from neutralized acrylic and methacrylic acid polymers; cationic polymers selected from neutralized or quaternized amine polymers; water-dispersible β-diketone containing polymers and ethylene oxide containing polymers.
Inventors
- 👤 Loretta Ann Grezzo Page
- 👤 Harry Joseph Spinelli
- 👤 Waifong Liew Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:38
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
An ink jet ink comprising: (a) an aqueous carrier medium; (b) an aqueous carrier medium insoluble colorant (c) a polymer dispersant; and (d) a linear polymer additive selected from the group consisting of: (i) water soluble, elastomeric ABA block polymers wherein the B block comprises an elastomeric polymer having a Tg of <0° C. and a degree of polymerization of >10, and wherein the A block comprises a non-elastomeric acrylic or methacrylic polymer having a Tg >10° C. and a degree of polymerization of <20; and (ii) water-dispersible β-diketone polymers wherein the linear polymer additive is present in the amount of 0.5 to 20% by weight.
Claim 2
Dependent Claim
106 words
An ink jet ink comprising: (a) an aqueous carrier medium; (b) an aqueous carrier medium insoluble colorant (c) a polymer dispersant; and (d) a linear polymer additive selected from the group consisting of: (i) water soluble, elastomeric ABA block polymers wherein the B block comprises an elastomeric polymer having a Tg of <0° C. and a degree of polymerization of >10, and wherein the A block comprises a non-elastomeric acrylic or methacrylic polymer having a Tg >10° C. and a degree of polymerization of <20; and (ii) water-dispersible β-diketone polymers wherein the linear polymer additive is present in the amount of 0.5 to 20% by weight.
Claim 3
Dependent Claim
64 words
The ink composition of claim 1 wherein the linear polymer additive is a water soluble, elastomeric ABA block polymer wherein the B block comprises an elastomeric polymer having a Tg of <0° C. and a degree of polymerization of >10, and wherein the A block comprises a non-elastomeric acrylic or methacrylic polymer having a Tg >10° C. and a degree of polymerization of <20.
Claim 4
Dependent Claim
47 words
The ink composition of claim 2 wherein the B block has a Tg of -50 to -80° C. and a degree of polymerization of 20 to 40 and wherein the A block has a Tg of 50 to 100° C. and a degree of polymerization of 5-10.
Claim 5
Dependent Claim
43 words
The ink composition of claim 2 wherein the ABA block polymer is selected from the group consisting of (a) n-butyl methacrylate//methacrylic acid/2-ethoxytriethylene glycol methacrylate//n-butyl methacrylate (5//3/30//5); (b) benzyl methacrylate//methacrylic acid/2-ethoxytriethylene glycol methacrylate//benzyl methacrylate (5//3/30//5); and (c) n-butyl methacrylate//demthylaminoethyl methacrylate/2-ethoxytriethylene glycol methacrylate//n-butyl methacrylate (5//5/30//5).
Claim 6
Dependent Claim
82 words
The ink composition of claim 1 wherein the linear polymer additive comprises: (a) 55 to 80% by weight of an alkyl methacrylate or alkyl acrylate, wherein the alkyl has 1 to 12 carbon atoms, a polymerizable vinyl aromatic monomer, vinyl pyrrolidone or mixtures thereof, (b) 5 to 40% by weight of acetoacetoxy ethyl methacrylate or acrylate; and (c) 5 to 15% by weight of acrylic or methacrylic acid; wherein the acrylic polymer has a weight average molecular weight of 5000 to 30,000.
Claim 7
Dependent Claim
31 words
The ink composition of claim 1 wherein the linear polymer additive is present in the amount of 1 to 12% by weight, based on the total weight of the ink composition.
Claim 8
Dependent Claim
47 words
The ink composition of claim 1 wherein the ink composition comprises approximately 0.1 to 8% aqueous carrier medium insoluble colorant, 0.1 to 8% polymer dispersant, 70 to 99.8% aqueous carrier medium and 0.5 to 20% linear polymer additive, based upon the total weight of the ink composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-21 | 2003-09-20 | 2004-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-21 | 2007-09-20 | 2008-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-21 | 2011-09-20 | 2012-03-21 | $7700.00 | Window Closed / Lapsed |