US3622263A
Expired / Lapsed
US
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Process for the dyeing of polyamide textiles with metal phthalocyanine dyestuffs
Assignee: Bayer AG
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Filing: 1968-07-05
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Granted: 1971-11-23
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Expires: 1988-07-05
Abstract
Abstract The process for dyeing synthetic super polyamides with metal phthalocyanine sulfonic acids wherein the improvement comprises applying a phthalocyanine containing 2-3 sulfonic acid groups in the 4- or 5-position of their benzene nuclei to provide dyeings of improved light-fastness.
Inventors
- 👤 Manfred Groll
- 👤 Hans-Samuel Bien
- 👤 Ernst-Robert Fritze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:56
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/06; C09B47/065; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
Process according to claim 1 wherein the benzene nuclei of the phthalocyanine may contain a further substituent selected from the group consisting of sulfonamide and C1-4 alkyl sulfonamide and the benzene nuclei which do not contain the sulfonic acid groups may contain one or two substituents selected from the group consisting of halogen, lower alkyl, and lower alkoxy.
Claim 2
Dependent Claim
25 words
Process according to claim 2 wherein said phthalocyanine is a nickel-phthalocyanine, containing 2 or 3 sulfonic acid groups in the 4-position of their benzene nucleus.
Claim 3
Dependent Claim
11 words
Process according to claim 2 wherein said phthalocyanine is copper-phthalocyanine-(4,4'''')-disulfonic acid.
Claim 4
Dependent Claim
11 words
Process according to claim 2 wherein said phthalocyanine is copper-phthalocyanine-(4,4'',4'''')-trisulfonic acid.
Claim 5
Dependent Claim
11 words
Process according to claim 2 wherein said phthalocyanine is nickel-phthalocyanine-(4,4'''')-disulfonic acid.
Claim 6
Dependent Claim
11 words
Process according to claim 2 wherein said phthalocyanine is nickel-phthalocyanine-(4,4'',4'''')-trisulfonic acid.
Claim 7
Dependent Claim
11 words
Process according to claim 2 wherein said phthalocyanine is 4-mono-methoxy-copper-phthalocyanine-(4'',4'''',4'''''')-trisulfonic acid.
Claim 8
Dependent Claim
11 words
Process according to claim 2 wherein said phthalocyanine is 4,5-dichloro-copper-phthalocyanine-(4'',4'''',4'''''')-tri-sulfonic acid.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |