Patent US4178422A successfully refreshed from Google Patents.
US4178422A
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Ethylsulfonate-alkylamine copolymers as colorant backbones
Assignee: Dynapol Shareholders Liquidating Trust
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Filing: 1978-04-19
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Granted: 1979-12-11
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Expires: 1998-04-19
Abstract
Abstract Ethylsulfonate-alkylamine copolymers are disclosed. These copolymers find special application as intermediates in the preparation of new water-soluble polymeric colorants which are also disclosed, especially water-soluble polymeric colorants for edibles.
Inventors
- 👤 Kenneth M. Otteson
- 👤 Daniel J. Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:03
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/10; A; A23; A23L; A23L5/00; A23L5/40; A23L5/42; A23L5/47; C08; C08F; C08F8/00; Y; Y10; Y10S; Y10S534/00; Y10S534/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
51 words
A copolymer comprising a plurality of ethylsulfonate and 2 to 6 carbon atom lower alkylamine groups, the sum of the number of ethylsulfonate groups and lower alkylamine groups being from 20 to 8000 and the number of lower alkylamine groups being from 0.4 to 2.5 times the number of ethylsulfonate groups.
Claim 2
Dependent Claim
51 words
A copolymer comprising a plurality of ethylsulfonate and 2 to 6 carbon atom lower alkylamine groups, the sum of the number of ethylsulfonate groups and lower alkylamine groups being from 20 to 8000 and the number of lower alkylamine groups being from 0.4 to 2.5 times the number of ethylsulfonate groups.
Claim 3
Dependent Claim
114 words
The copolymer of claim 1 wherein said copolymer is represented by the structural formula: ##STR29## wherein R 1 and R 2 are independently selected from the group consisting of hydrogen and 1 to 4 carbon saturated alkyls, R 3 is a 1 to 4 carbon saturated alkyl, R 4 is selected from the group of carbon-nitrogen single bond and 1 to 4 carbon lower saturated alkyls and R 1 , R 2 , R 3 , and R 4 together contain not more than 5 carbon atoms; n and m are integers, n+m is equal to 20 to 8000, n is from 0.4 to 2.5 n and M + is an alkali metal cation.
Claim 4
Dependent Claim
45 words
The copolymer of claim 1 wherein the lower alkyl amine is ethylamine, the sum of units of ethylamine and ethylsulfonate is from 20 to 8000 and the number of units of ethyl sulfonate is from 0.6 to 1.5 times the number of units of ethylamine.
Claim 5
Dependent Claim
11 words
The copolymer of claim 3 wherein the alkali metal is sodium.
Claim 6
Dependent Claim
26 words
A polymeric colorant comprising the copolymer of claim 3 having units of chromophoric group covalently bonded to from 30% to 70% of the units of ethylamine.
Claim 7
Dependent Claim
19 words
The polymeric colorant of claim 5 wherein said chromophoric group is selected from the anthraquinone and azo chromophoric groups.
Claim 8
Dependent Claim
46 words
The copolymer of claim 1 wherein the lower alkylamine is 3-methylpiperidine and the sum of units of 3-methylpiperidine and ethyl sulfonate is from 20 to 8000 and the number of units of ethyl sulfonate is from 0.6 to 1.5 times the number of units of 3-methylpiperidine.
Claim 9
Dependent Claim
70 words
A polymeric colorant comprising a copolymer having a plurality of ethylsulfonate and 2 to 6 carbon atom lower alkylamine groups, the sum of the number of ethylsulfonate groups and lower alkylamine groups being from 20 to 8000 and the number of lower alkylamine groups being from 0.4 to 2.5 times the number of ethylsulfonate groups having a plurality of chromophoric group units covalently bonded thereto through said lower alkylamine groups.
Claim 10
Dependent Claim
70 words
A polymeric colorant comprising a copolymer having a plurality of ethylsulfonate and 2 to 6 carbon atom lower alkylamine groups, the sum of the number of ethylsulfonate groups and lower alkylamine groups being from 20 to 8000 and the number of lower alkylamine groups being from 0.4 to 2.5 times the number of ethylsulfonate groups having a plurality of chromophoric group units covalently bonded thereto through said lower alkylamine groups.
Claim 11
Dependent Claim
19 words
The polymeric colorant of claim 8 wherein said chromophoric groups is selected from the anthraquinone and azo chromophoric groups.
Claim 12
Dependent Claim
146 words
A polymeric colorant comprising a copolymer having a plurality of repeating units of ethylsulfonate and ethylamine the sum of the number of units of ethylsulfonate and ethylamine being from 20 to 8000 and the number of ethylamine units being from 0.5 to 2.5 times the number of ethylsulfonate units and having units of chromophoric group covalently bonded to from 30% to 70% of the units of ethylamine; said chromophoric group having the structure ##STR30## wherein R 1 is selected from the group consisting of hydrogen, a saturated alkyl of from 1 to 4 carbon atoms inclusive, and about 6 carbon aryls; R 2 is selected from the group consisting of 1 to 4 carbon inclusive saturated alkyls, 1 to 4 carbon inclusive alkoxies and about 6 carbon aryls; and R 3 is selected from the group consisting of hydrogen and 1 to 4 carbon saturated alkyls.
Claim 13
Dependent Claim
146 words
A polymeric colorant comprising a copolymer having a plurality of repeating units of ethylsulfonate and ethylamine the sum of the number of units of ethylsulfonate and ethylamine being from 20 to 8000 and the number of ethylamine units being from 0.5 to 2.5 times the number of ethylsulfonate units and having units of chromophoric group covalently bonded to from 30% to 70% of the units of ethylamine; said chromophoric group having the structure ##STR30## wherein R 1 is selected from the group consisting of hydrogen, a saturated alkyl of from 1 to 4 carbon atoms inclusive, and about 6 carbon aryls; R 2 is selected from the group consisting of 1 to 4 carbon inclusive saturated alkyls, 1 to 4 carbon inclusive alkoxies and about 6 carbon aryls; and R 3 is selected from the group consisting of hydrogen and 1 to 4 carbon saturated alkyls.
Claim 14
Dependent Claim
20 words
The polymeric colorant of claim 10 wherein R 1 is hydrogen, R 2 is methyl and R 3 is methyl.
Claim 15
Dependent Claim
20 words
The polymeric colorant of claim 10 wherein R 1 is hydrogen, R 2 is ethoxy and R 3 is methyl.
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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) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |