US4963188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel water-based ink composition
Assignee: Union Camp Corp
•
Filing: 1988-09-30
•
Granted: 1990-10-16
•
Expires: 2008-09-30
Abstract
Abstract Novel water-based ink compositions, suitable as flexographic and gravure inks, are disclosed which incorporate high molecular weight resin acid-maleic anhydride polymers. The ink compositions of this invention comprise a coloring agent and a resin vehicle which comprises an aqueous solution of the reaction product of rosin and maleic anhydride in the presence of a free radical polymerization initiator.
Inventors
- 👤 David W. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
79 words
An ink composition comprising a coloring agent and a resin vehicle which comprises an aqueous solution of a resin acid-maleic anhydride polymer, said polymer being produced by the copolymerization of maleic anhydride reactive resin acids present in rosin, or esters thereof, and maleic anhydride, in the presence of a free-radical initiator, said polymer having a peak molecular weight of at least about 1500 as measured by gel permeation chromatography with retention times references to polystyrene of known molecular weights.
Claim 2
Dependent Claim
79 words
An ink composition comprising a coloring agent and a resin vehicle which comprises an aqueous solution of a resin acid-maleic anhydride polymer, said polymer being produced by the copolymerization of maleic anhydride reactive resin acids present in rosin, or esters thereof, and maleic anhydride, in the presence of a free-radical initiator, said polymer having a peak molecular weight of at least about 1500 as measured by gel permeation chromatography with retention times references to polystyrene of known molecular weights.
Claim 3
Dependent Claim
25 words
The ink composition of claim 1 where said resin acid-maleic anhydride polymer has a peak molecular weight in the range of about 3000 to 8000.
Claim 4
Dependent Claim
25 words
The ink composition of claim 1 where said resin acid-maleic anhydride polymer further comprises one or more additional monomers capable of polymerizing with maleic anhydride.
Claim 5
Dependent Claim
23 words
The ink composition of claim 3 where said one or more additional monomers comprise up to about 25 mole % of said polymer.
Claim 6
Dependent Claim
22 words
The ink composition of claim 3 in which said one or more additional monomers are selected from styrene, beta-pinene, beta-phellandrene and isoterpinolene.
Claim 7
Dependent Claim
15 words
The ink composition of claim 1 in which said polymer is esterified with an alcohol.
Claim 8
Dependent Claim
30 words
The ink composition of claim 6 in which said polymer is esterified with a compound selected from ethanol, n-propanol, n-butanol, diethylene glycol monomethyl ether, ethylene glycol n-butyl ether and dimethylaminoethanol.
Claim 9
Dependent Claim
17 words
The ink composition according to claim 1 in which the polymer is reacted with an amine compound.
Claim 10
Dependent Claim
19 words
The ink composition according to claim 8 in which the polymer is reacted with a primary or secondary amine.
Claim 11
Dependent Claim
22 words
The ink composition according to claim 8 in which the polymer is reacted with a compound selected from butylamine, morpholine, and monoethanolamine.
Claim 12
Dependent Claim
33 words
The ink composition of claim 1 in which said resin vehicle further comprises an amount of base sufficient to bring the pH of said vehicle within the range of about 8.0 to 10.0.
Claim 13
Dependent Claim
33 words
The ink composition of claim 11 in which said resin vehicle further comprises an amount of base sufficient to bring the pH of said vehicle within the range of about 8.5 to 9.0.
Claim 14
Dependent Claim
24 words
The ink composition of claim 11 in which said base is selected from the group consisting of ammonia, water-soluble amines, and alkali metal hydroxides.
Claim 15
Dependent Claim
35 words
An ink composition comprising a coloring agent and a resin vehicle which comprises an aqueous solution of the reaction product of rosin and maleic anhydride prepared in the presence of a free radical polymerization initiator.
Claim 16
Dependent Claim
35 words
An ink composition comprising a coloring agent and a resin vehicle which comprises an aqueous solution of the reaction product of rosin and maleic anhydride prepared in the presence of a free radical polymerization initiator.
Claim 17
Dependent Claim
37 words
The ink composition of claim 1 in which said free radical polymerization initiator is 2,2,'-azobis(2-methylpropanenitrile) and is present in an amount of about 0.1 to 2 weight percent, based on total weight of rosin and maleic anhydride.
Claim 18
Dependent Claim
29 words
The ink composition of claim 14 in which said reaction product comprises resin acid-maleic anhydride polymer having a peak molecular weight in the range of about 3000 to 8000.
Claim 19
Dependent Claim
21 words
The ink composition of claim 14 in which about 10 to 60 weight % of said reaction product comprises said polymer.
Claim 20
Dependent Claim
21 words
The ink composition of claim 17 in which about 20 to 45 weight % of said reaction product comprises said polymer.
Claim 21
Dependent Claim
20 words
The ink composition of claim 14 in which said reaction product is modified by reaction with an alcohol or amine.
Claim 22
Dependent Claim
33 words
The ink composition of claim 14 in which said resin vehicle further comprises an amount of base sufficient to bring the pH of said vehicle within the range of about 8.0 to 10.0.
Claim 23
Dependent Claim
20 words
The ink composition of claim 14 in which said base is selected from ammonia, water-soluble amines and alkali metal hydroxides.
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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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |