Patent US4344767A successfully refreshed from Google Patents.
US4344767A
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Process for coloring linear polyesters in the melt
Assignee: BASF Corp
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Filing: 1981-05-20
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Granted: 1982-08-17
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Expires: 2001-05-20
Abstract
Abstract The invention relates to a process for coloring linear polyesters in the melt. The process comprises the use of 1-hydroxy-4-phenylaminoanthraquinones of the formula ##STR1## wherein one X is a hydrogen atom and the other is an alkylsulfonyloxy or chloroalkylsulfoxy group and Y is a hydrogen or halogen atom or an alkyl group. The violet shades obtained are distinguished by excellent color strength and purity and also by good fastness properties.
Inventors
- 👤 Gerhard Umsonst
- 👤 Hans P. Kolliker
- 👤 Max Jost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:35
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/51; C09B1/514; C09B1/5145; C08; C08K; C08K5/00; C08K5/36; C08K5/41
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
A process for coloring linear polyesters in the melt, which process comprises the use of a 1-hydroxy-4-phenylaminoanthraquinone of the formula ##STR8## wherein one X is a hydrogen atom or methyl group and the other is an alkylsulfonyloxy or chloroalkylsulfonyloxy group and Y is a hydrogen or halogen atom or an alkyl group.
Claim 2
Dependent Claim
52 words
A process for coloring linear polyesters in the melt, which process comprises the use of a 1-hydroxy-4-phenylaminoanthraquinone of the formula ##STR8## wherein one X is a hydrogen atom or methyl group and the other is an alkylsulfonyloxy or chloroalkylsulfonyloxy group and Y is a hydrogen or halogen atom or an alkyl group.
Claim 3
Dependent Claim
43 words
A process according to claim 1, wherein the colorant is a compound of the formula I, in which one X is an alkylsulfonyloxy or chloroalkylsulfonyloxy group of 1 to 4 carbon atoms and the other is hydrogen or methyl, and Y is hydrogen.
Claim 4
Dependent Claim
14 words
A process according to claim 2, wherein the alkylsulfonyloxy group is the methylsulfonyloxy group.
Claim 5
Dependent Claim
22 words
A process according to claim 1, wherein the colorant is a compound of the formula ##STR9## wherein Z is hydrogen or chlorine.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein the colorant is a compound of the formula ##STR10##
Claim 7
Dependent Claim
16 words
A process according to claim 1, wherein the colorant is a compound of the formula ##STR11##
Claim 8
Dependent Claim
16 words
A process according to claim 1, wherein the colorant is a compound of the formula ##STR12##
Claim 9
Dependent Claim
16 words
A process according to claim 1, wherein the colorant is a compound of the formula ##STR13##
Claim 10
Dependent Claim
13 words
A melt colored linear polyester which contains a colorant according to claim 1.
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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |