Patent US3619356A successfully refreshed from Google Patents.
US3619356A
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Fixing of anionic dyestuffs to cellulosic fibers with cationic polymeric fatty acid polyalkylene polyamines
Assignee: General Mills Inc
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Filing: 1968-03-25
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Granted: 1971-11-09
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Expires: 1988-03-25
Abstract
Abstract Cellulosic fibers are dyed by treatment with an anionic dye such as Calcocid Blue 2G (a tri-phenyl methane dye, color Index 42090) and a polyamine derived from polymeric fat acids such as the polyamine obtained by hydrogenating, in the presence of ammonia, the reaction product of ammonia and tall oil fatty acids. Paper is prepared by adding such dye and polyamine to the aqueous fiber dispersion prior to the formation of sheets.
Inventors
- 👤 James L Keen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:24
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/28; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/919
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
17 words
The process of claim 1 where in the polyamine is selected from those of the following formulae:
Claim 2
Dependent Claim
37 words
The process of claim 1 wherein the polyamine has the formula: H2N-CH2-D-CH2-NH2 where D is the divalent hydrocarbon radical of dimerized fat acids derived from ethylenically unsaturated aliphatic monobasic carboxylic acids of 16 to 22 carbon atoms.
Claim 3
Dependent Claim
45 words
The process of claim 1 wherein the polyamine has the formula: where m is an integer of 3 or 4 and D is the divalent hydrocarbon radical of dimerized fat acids derived from ethylenically unsaturated aliphatic monobasic carboxylic acids of 16 to 22 carbon atoms.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the ethylenically unsaturated aliphatic monobasic carboxylic acids contain 18 carbon atoms.
Claim 5
Dependent Claim
18 words
The process of claim 5 wherein the 18 carbon atom acids comprise a mixture rich in linoleic acid.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the polyamine is added to the fibers as an aqueous solution.
Claim 7
Dependent Claim
29 words
The process of claim 1 wherein the polyamine is used in an amount of about 0.05 to 1.0 percent by weight based on the dry weight of the fibers.
Claim 8
Dependent Claim
13 words
The process of claim 8 wherein the anionic dye is an acid dye.
Claim 9
Dependent Claim
36 words
The process of claim 9 wherein the polyamine has the formula: where D Is the divalent hydrocarbon radical derived from a mixture of 18 carbon atom ethylenically unsaturated aliphatic monobasic carboxylic acids rich in linoleic acid.
Claim 10
Dependent Claim
85 words
In the process of preparing colored paper from an aqueous dispersion of cellulosic fibers and an anionic dye, the improvement comprising adding a polyamine having at least two primary amine groups and at least one polyvalent hydrocarbon group of polymerized fat acids derived from ethylenically unsaturated aliphatic monobasic carboxylic acids of 16 to 22 carbon atoms to the dispersion before forming the dispersion into sheets, said polyamine being used in an amount sufficient to increase the retention of the anionic dye by the cellulosic fibers.
Claim 11
Dependent Claim
25 words
The process of claim 11 wherein both the anionic dye and the polyamine are added to the fiber dispersion as dilute aqueous dispersions or solutions.
Claim 12
Dependent Claim
16 words
The process of claim 12 wherein the polyamine is selected from those of the following formulae:
Claim 13
Dependent Claim
41 words
The process of claim 13 wherein the anionic dye is an acid dye and the polyamine is used in an amount of about 0.05 to 1.0 percent by weight based on the dry weight of the fibers and has the formula
Claim 14
Dependent Claim
30 words
The process of claim 14 wherein D is the divalent hydrocarbon radical derived from a mixture of 18 carbon atom ethylenically unsaturated aliphatic monobasic carboxylic acids rich in linoleic acid.
Claim 15
Dependent Claim
9 words
The product prepared by the process of claim 1.
Claim 16
Dependent Claim
10 words
The paper product prepared by the process of claim 11.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |