US3874847A
Expired / Lapsed
US
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Process for dyeing acid-modified polyester fibers and novel thiazoleazo-type cationic dyes
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1973-08-21
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Granted: 1975-04-01
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Expires: 1993-08-21
Abstract
Abstract A process for dyeing acid-modified polyester fibers comprising contacting the fibers with a dye bath containing a thiazoleazotype cationic dye of the formula (I); wherein R1 and R3 are each a C1 - C2 alkyl group, R2 is a hydrogen atom, a C1 - C2 alkyl group or a C1 - C2 alkoxy group, R4 is a hydrogen atom or a C1 - C2 alkyl group, R5 is a hydroxyl group or a C1 - C2 alkoxy group, and X is an anion. The dye compounds of the formula (I) dye acid-modified polyester fibers a bright shade and with good light fastness. The dye compounds of the Formula (I) wherein R2 is a hydrogen atom or a methoxy or ethoxy group are novel dye compounds.
Inventors
- 👤 Masaaki Ohkawa
- 👤 Seizo Konishi
- 👤 Sadaharu Abeta
- 👤 Tetuo Okaniwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:17
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10; C09B44/20; C09B26/00; C09B26/02; C09B26/04; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/927
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
29 words
A PROCESS FOR DYEING ACID-MODIFIED POLYESTER FIBERS WITH A CATIONIC DYE, COMPRISING CONTACTING SAID POLYESTER FIBERS WITH A DYE BATH CONTAINING A CATIONIC DYE COMPOUND OF THE FORMULA (1),
Claim 2
Dependent Claim
29 words
A PROCESS FOR DYEING ACID-MODIFIED POLYESTER FIBERS WITH A CATIONIC DYE, COMPRISING CONTACTING SAID POLYESTER FIBERS WITH A DYE BATH CONTAINING A CATIONIC DYE COMPOUND OF THE FORMULA (1),
Claim 3
Dependent Claim
19 words
The process according to claim 1, wherein said dye bath is at a temperature of from 110* to 130*C.
Claim 4
Dependent Claim
22 words
The process according to claim 1, wherein the dyeing is carried out in a dye bath additionally containing a non-ionic type carrier.
Claim 5
Dependent Claim
48 words
The process according to claim 1, wherein in said compound of the Formula (I) R1 is an ethyl group, R2 is a hydrogen atom or a methyl group, R3 is an ethyl group, R4 is a hydrogen atom and R5 is a hydroxyl group or a methoxy group.
Claim 6
Dependent Claim
14 words
The process according to claim 4, wherein said compound of the formula (I) is
Claim 7
Dependent Claim
14 words
The process according to claim 4, wherein said compound of the Formula (I) is,
Claim 8
Dependent Claim
14 words
The process according to claim 4, wherein said compound of the Formula (I) is,
Claim 9
Dependent Claim
11 words
Acid-modified polyester fibers dyed by the process according to claim 1.
References Cited (Backward Citations)
US3504997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |