Patent US4166080A successfully refreshed from Google Patents.
US4166080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nylon 6 having improved affinity for cationic dyes
Assignee: Akzona Inc
•
Filing: 1978-09-01
•
Granted: 1979-08-28
•
Expires: 1998-09-01
Abstract
Abstract Nylon 6 containing a metal salt of a copolymer of a vinyl ether and 2-acrylamido-2-methylpropanesulfonic acid to improve its affinity for cationic dyes is provided.
Inventors
- 👤 Neal E. Franks
- 👤 Carol L. Drinnan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:43
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
52 words
A polycaproamide receptive to cationic dyes containing about 1 to about 5 percent by weight of a metal salt of a vinyl ether copolymer of 2-acrylamido-2-methylpropanesulfonic acid said metal being selected from Group Ia of the Periodic Table, said copolymer comprising from 17 to 47 mole percent of said vinyl ether monomer.
Claim 2
Dependent Claim
52 words
A polycaproamide receptive to cationic dyes containing about 1 to about 5 percent by weight of a metal salt of a vinyl ether copolymer of 2-acrylamido-2-methylpropanesulfonic acid said metal being selected from Group Ia of the Periodic Table, said copolymer comprising from 17 to 47 mole percent of said vinyl ether monomer.
Claim 3
Dependent Claim
18 words
The polycaproamide of claim 1 containing from about 1 to about 5 percent by weight of the copolymer.
Claim 4
Dependent Claim
25 words
The polycaproamide of claim 1 wherein the said copolymer is a copolymer of a vinyl ether containing 4 to 20 carbon atoms and 2-acrylamido-2-methylpropanesulfonic acid.
Claim 5
Dependent Claim
13 words
The polycaproamide of claim 1 wherein the polycaproamide is shaped as a fiber.
Claim 6
Dependent Claim
18 words
The polycaproamide of claim 1 wherein the vinyl ether copolymerized with 2-acrylamido-2-methylpropanesulfonic acid is a butyl vinyl ether.
Claim 7
Independent Claim
60 words
A method for improving the receptivity of a polycaproamide to cationic dyes which comprises mixing with the polycaproamide about 1 to about 5 percent by weight of a metal salt of a copolymer containing from 17 to 47 mole percent of a vinyl ether and the remainder 2-acrylamido-2-methylpropanesulfonic acid, said metal being selected from Group Ia of the Periodic Table.
Claim 8
Independent Claim
60 words
A method for improving the receptivity of a polycaproamide to cationic dyes which comprises mixing with the polycaproamide about 1 to about 5 percent by weight of a metal salt of a copolymer containing from 17 to 47 mole percent of a vinyl ether and the remainder 2-acrylamido-2-methylpropanesulfonic acid, said metal being selected from Group Ia of the Periodic Table.
Claim 9
Dependent Claim
23 words
The method of claim 6 wherein from about 1 to about 5 percent by weight of the copolymer is mixed with the polycaproamide.
Claim 10
Dependent Claim
24 words
The method of claim 6 wherein the copolymer is a copolymer of a vinyl ether containing 4 to 20 carbon atoms and 2-acrylamido-2-methylpropanesulfonic acid.
Claim 11
Dependent Claim
11 words
The method of claim 6 wherein the polycaproamide is a fiber.
Claim 12
Dependent Claim
14 words
The method of claim 6 wherein the vinyl ether is a butyl vinyl ether.
Claim 13
Independent Claim
61 words
A method for making a polycaproamide fiber having improved affinity for cationic dyes which comprises mixing with the polycaproamide about 1 to about 5 percent by weight of a metal salt of a copolymer containing from 17 to 47 mole percent of a vinyl ether and the remainder 2-acrylamido-2-methylpropanesulfonic acid, said metal being selected from Group Ia of the Periodic Table.
Claim 14
Independent Claim
61 words
A method for making a polycaproamide fiber having improved affinity for cationic dyes which comprises mixing with the polycaproamide about 1 to about 5 percent by weight of a metal salt of a copolymer containing from 17 to 47 mole percent of a vinyl ether and the remainder 2-acrylamido-2-methylpropanesulfonic acid, said metal being selected from Group Ia of the Periodic Table.
References Cited (Backward Citations)
US3865900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-27 | 1983-02-26 | 1983-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-27 | 1987-02-26 | 1987-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-27 | 1991-02-26 | 1991-08-28 | $7700.00 | Window Closed / Lapsed |