US4051099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dyeing of thermoplastics in the melt
Assignee: Novartis Corp
•
Filing: 1976-03-30
•
Granted: 1977-09-27
•
Expires: 1996-03-30
Abstract
Abstract Process for the dyeing of thermoplastics in the melt, which process comprises the use of dyestuffs of the formula ##STR1## wherein X 1 - X 4 represents H-atoms or halogen atoms, or one or two of the radicals X 1 - X 4 represent alkyl, alkoxy, phenyl or phenoxy groups, and those remaining represent H-atoms, R 1 and R 2 represent radicals of methylene-active compounds, or radicals of the formula ═N--A wherein A stands for the radical of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, whereby, provided that R 1 and R 2 represent radicals of the formula ═N--A, one A represents a heterocyclic radical containing N-atoms, optionally together with O- or S-atoms.
Inventors
- 👤 Jost VON DER Crone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C08K5/3442; C08K5/3445; C08K5/3447; C09; C09B; C09B57/00; C09B57/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
Process for the dyeing of thermoplastics in the melt, which process comprises the use of dyestuffs of the formula ##STR18## wherein X 1 - X 4 represents H-atoms or halogen atoms, or one or two of the radicals X 1 - X 4 represent alkyl, alkoxy, phenyl or phenoxy groups, and those remaining represent H-atoms, R 1 and R 2 represent radicals of methylene-active compounds, or radicals of the formula ═N--A wherein A stands for the radical of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, whereby, provided that R 1 and R 2 represent radicals of the formula ═N--A, one A represents a heterocyclic radical containing N-atoms, optionally together with O- or S-atoms.
Claim 2
Dependent Claim
116 words
Process for the dyeing of thermoplastics in the melt, which process comprises the use of dyestuffs of the formula ##STR18## wherein X 1 - X 4 represents H-atoms or halogen atoms, or one or two of the radicals X 1 - X 4 represent alkyl, alkoxy, phenyl or phenoxy groups, and those remaining represent H-atoms, R 1 and R 2 represent radicals of methylene-active compounds, or radicals of the formula ═N--A wherein A stands for the radical of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, whereby, provided that R 1 and R 2 represent radicals of the formula ═N--A, one A represents a heterocyclic radical containing N-atoms, optionally together with O- or S-atoms.
Claim 3
Dependent Claim
75 words
Process according to claim 1, which process comprises the use of dyestuffs of the formula ##STR19## wherein R 3 and R 4 represent cyano, acyl, alkoxycarbonyl, carbamoyl or sulphamoyl groups, or radicals of the formula ##STR20## wherein V represents an O- or S-atom or an imino group, or an alkylimino group containing 1 - 4C-atoms, Y 1 and Y 2 represent H-atoms or halogen atoms, or alkyl or alkoxy groups containing 1 - 4 C-atoms.
Claim 4
Dependent Claim
121 words
Process according to claim 2, which process comprises the use of dyestuffs of the formula ##STR21## wherein Y 1 and Y 2 have the meaning given in claim 2, Y 3 represents a H-atom or halogen atom, an alkyl or alkoxy group optionally substituted by alkoxy groups having 1 - 4 C-atoms, or by phenoxy or phenyl groups, an alkanoylamino or alkylsulphonyl group having 1- 4 C-atoms, an alkoxycarbonyl group having 2 - 6 C-atoms, a nitro, trifluoromethyl or cyano group, or a phenoxy group optionally substituted by halogen atoms or by alkyl or alkoxy groups having 1 - 4 C-atoms, Y 4 and Y 5 represent H-atoms or halogen atoms, or alkyl or alkoxy groups having 1 - 4 C-atoms.
Claim 5
Dependent Claim
35 words
Process according to claim 1, which process comprises the use of dyestuffs of the formula ##STR22## wherein R 3 has the meaning given in claim 2, and R 5 represents an aromatic or heterocyclic radical.
Claim 6
Dependent Claim
53 words
Process according to claim 4, which process comprises the use of dyestuffs of the formula ##STR23## wherein Y 1 and Y 2 have the meaning given in claim 2, R 6 represents a radical of the formula ##STR24## and Y 1 - Y 5 have the meaning given in claims 2 and 3.
Claim 7
Dependent Claim
17 words
Process according to claim 5, which process comprises the use of a dyestuff of the formula ##STR25##
Claim 8
Dependent Claim
17 words
Process according to claim 5, which process comprises the use of a dyestuff of the formula ##STR26##
Claim 9
Dependent Claim
12 words
Process according to claim 1, wherein the thermoplastics dyed are spinning fibres.
Claim 10
Dependent Claim
12 words
Process according to claim 1, wherein the thermoplastics dyed are linear polyesters.
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |