US4405734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for mass coloring thermoplastic plastics
Assignee: Hoechst AG
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Filing: 1982-09-03
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Granted: 1983-09-20
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Expires: 2002-09-03
Abstract
Abstract The invention relates to a process for coloring water-insoluble thermoplastic plastics with dyestuffs of the formula ##STR1## The dyestuffs are added to the melt of the thermoplastic plastic or to its precursors.
Inventors
- 👤 Otto Fuchs
- 👤 Adolf Kroh
- 👤 Wolfgang Teige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/3447; C09; C09B; C09B57/00; C09B57/12; D; D01; D01F; D01F1/00; D01F1/02; D01F1/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A process for coloring water-insoluble thermoplastic plastics with dyestuffs of the formula ##STR9## in which R denotes alkyl having 3 to 18 carbon atoms, hydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl, alkoxyalkoxyalkyl, carbalkoxyalkyl, carboxyalkyl or phenylalkyl having in each case 1 to 14 carbon atoms in the alkyl and alkoxy part respectively, X denotes halogen, alkyl, alkoxy, acylamino, acyl, carboxyl, carbalkoxy, carbamoyl, mono- or dialkylcarbamoyl, sulfamoyl, mono- or dialkylsulfamoyl having in each case up to 8 carbon atoms in the radicals, nitro or cyano, and n is 0 to 3, with the X substituents being identical or different, which comprises adding these dyestuffs to the melt of the thermoplastic plastic or to its precursors.
Claim 2
Dependent Claim
110 words
A process for coloring water-insoluble thermoplastic plastics with dyestuffs of the formula ##STR9## in which R denotes alkyl having 3 to 18 carbon atoms, hydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl, alkoxyalkoxyalkyl, carbalkoxyalkyl, carboxyalkyl or phenylalkyl having in each case 1 to 14 carbon atoms in the alkyl and alkoxy part respectively, X denotes halogen, alkyl, alkoxy, acylamino, acyl, carboxyl, carbalkoxy, carbamoyl, mono- or dialkylcarbamoyl, sulfamoyl, mono- or dialkylsulfamoyl having in each case up to 8 carbon atoms in the radicals, nitro or cyano, and n is 0 to 3, with the X substituents being identical or different, which comprises adding these dyestuffs to the melt of the thermoplastic plastic or to its precursors.
Claim 3
Dependent Claim
14 words
The process as claimed in claim 1, wherein the plastic is a linear polyester.
Claim 4
Dependent Claim
18 words
The process as claimed in claim 1 or 2, wherein the dyestuff is added to a spinning composition.
Claim 5
Dependent Claim
18 words
A colored water-insoluble thermoplastic plastic, obtained by one of the processes as claimed in claim 1 or 2.
References Cited (Backward Citations)
US2988402A
Cited
US3043843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |