US5519085A
Expired / Lapsed
US
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Aqueous dispersions containing ABC triblock polymer dispersants
Assignee: EIDP Inc
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Filing: 1995-08-07
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Granted: 1996-05-21
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Expires: 2015-08-07
Abstract
Abstract Aqueous dispersions having improved stability and which are particularly well suited for use as aqueous ink jet ink compositions comprise an aqueous carrier medium which comprises water or a mixture of water and at least one organic component; a particulate solid, preferably a pigment; and an ABC triblock polymer comprising an A block which is a hydrophilic polymer, a B block which is a polymer capable of binding to the particulate solid, a C block, different from the A and B block, which is a hydrophobic or hydrophilic polymer; and wherein the A and C blocks are end blocks.
Inventors
- 👤 Sheau-Hwa Ma
- 👤 Ira B. Dicker
- 👤 Walter R. Hertler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:02
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; C09D11/326; C08; C08L; C08L53/00; C09D17/00; C09D17/004; C09D7/00; C09D7/40; C09D7/45
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
122 words
An aqueous dispersion comprising: (a) an aqueous carrier medium comprising water and at least one water soluble organic component; (b) a particulate solid having functional groups on the surface thereof; and (c) an ABC triblock polymer wherein (1) the A block is an end block and is a water soluble hydrophilic polymer, (2) the B block is a polymer having functional groups, and (3) the C block is an end block, different from the A block and the B block, and is a polymer which is soluble in the at least one water soluble organic component in the aqueous carrier medium; wherein the functional groups on the surface of the particulate solid are bound to the functional groups on the B block.
Claim 2
Dependent Claim
122 words
An aqueous dispersion comprising: (a) an aqueous carrier medium comprising water and at least one water soluble organic component; (b) a particulate solid having functional groups on the surface thereof; and (c) an ABC triblock polymer wherein (1) the A block is an end block and is a water soluble hydrophilic polymer, (2) the B block is a polymer having functional groups, and (3) the C block is an end block, different from the A block and the B block, and is a polymer which is soluble in the at least one water soluble organic component in the aqueous carrier medium; wherein the functional groups on the surface of the particulate solid are bound to the functional groups on the B block.
Claim 3
Dependent Claim
44 words
The aqueous dispersion of claim 1, wherein the bonding between the functional groups on the surface of the particulate solid and the functional groups on the B block is selected from the group consisting of hydrophobic attraction, aromatic interactions, ionic bonding and covalent bonding.
Claim 4
Dependent Claim
24 words
The dispersion of claim 1, wherein the particulate solid is a pigment and wherein said aqueous carrier medium comprises water and an organic solvent.
Claim 5
Dependent Claim
25 words
The dispersion of claim 1, wherein the A block is selected from the group consisting of poly(vinyl alcohol), acrylic homopolymer, acrylic copolymer, and polyethylene oxide.
Claim 6
Dependent Claim
20 words
The dispersion of claim 4, wherein the A block is an acrylic homopolymer or copolymer prepared from a water-soluble monomer.
Claim 7
Dependent Claim
14 words
The dispersion of claim 5, wherein the monomer is neutralized with a neutralizing agent.
Claim 8
Dependent Claim
27 words
The dispersion of claim 5, wherein the monomer is in the range of 10 to 100% by weight based on the total weight of the A block.
Claim 9
Dependent Claim
28 words
The dispersion of claim 1, wherein the content of the A block is approximately 10 to 90% by weight based on the total weight of the block polymer.
Claim 10
Dependent Claim
20 words
The dispersion of claim 1 or 2, wherein the B block is bound to the particulate solid through hydrophobic attractions.
Claim 11
Dependent Claim
12 words
The dispersion of claim 9, wherein the B block is poly(n-butyl methacrylate).
Claim 12
Dependent Claim
20 words
The dispersion of claim 1 or 3, wherein the B block is bound to the particulate solid through aromatic interactions.
Claim 13
Dependent Claim
17 words
The dispersion of claim 11, wherein the B block is a homopolymer or copolymer of benzyl methacrylate.
Claim 14
Dependent Claim
17 words
The dispersion of claim 11, wherein the B block is a homopolymer or copolymer of 2-phenylethyl methacrylate.
Claim 15
Dependent Claim
20 words
The dispersion of claim 1 or 3, wherein the B block is bound to the particulate solid through ionic bonds.
Claim 16
Dependent Claim
20 words
The dispersion of claim 14, wherein the B block comprises basic groups and wherein the particulate solid comprises acidic groups.
Claim 17
Dependent Claim
20 words
The dispersion of claim 1 or 3, wherein the B block is bound to the particulate solid through covalent bonding.
Claim 18
Dependent Claim
13 words
The dispersion of claim 1 or 3, wherein the C block is hydrophilic.
Claim 19
Dependent Claim
13 words
The dispersion of claim 1 or 3, wherein the C block is hydrophobic.
Claim 20
Dependent Claim
27 words
The dispersion of claim 1 or 3, wherein the C block is prepared from monomers selected from the group consisting of butyl methacrylate and ethoxytriethylene glycol methacrylate.
Claim 21
Dependent Claim
37 words
The dispersion of claim 1, wherein the ABC triblock is prepared from monomers selected from the group consisting of methacrylates, acrylates, vinylaromatics, diene hydrocarbons, lactones, lactams, oxazolines, epoxides, oxetanes, thioepoxides, alkyl vinyl ethers, and trialkylsilyl vinyl ethers.
Claim 22
Dependent Claim
43 words
The dispersion of claim 1 or 3, wherein the ABC triblock is prepared from monomers having oligoether moieties of the structure: CH.sub.2 :CRC(O)O(CH.sub.2 CH.sub.2 O).sub.n R.sub.1 where R=H or methyl; R 1 =alkyl of 1 to 4 carbon atoms or phenyl; and n=1-20.
Claim 23
Dependent Claim
25 words
The dispersion of claim 21, wherein said monomers are selected from the group consisting of ethoxyethyl methacrylate, butoxyethyl methacrylate, ethoxytriethylene methacrylate and methoxypolyethylene glycol methacrylate.
Claim 24
Dependent Claim
18 words
The dispersion of claim 1 or 3, wherein the ABC triblock is methacrylic acid//phenylethyl methacrylate//ethoxytriethylene glycol methacrylate (13//10//4).
Claim 25
Dependent Claim
18 words
The dispersion of claim 1 or 3, wherein the ABC triblock is methacrylic acid//phenylethyl methacrylate/dimethylaminoethyl methacrylate//ethoxytriethylene glycol methacrylate(13//8/2//4).
Claim 26
Dependent Claim
18 words
The dispersion of claim 1 or 3, wherein the ABC triblock is dimethylaminoethyl methacrylate/methyl methacrylate//phenylethyl methacrylate//ethoxytriethylene glycol methacrylate(7.5/5//10//4).
Claim 27
Dependent Claim
21 words
The dispersion of claim 3, wherein the organic solvent is a water soluble organic solvent having at least one hydroxyl group.
Claim 28
Dependent Claim
20 words
The dispersion of claim 1 or 3, wherein the particulate solid has a size of approximately 0.01 to 5 microns.
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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) | 1999-05-21 | 1999-11-20 | 2000-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-21 | 2003-11-20 | 2004-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-21 | 2007-11-20 | 2008-05-21 | $7700.00 | Window Closed / Lapsed |