Patent US910416A successfully refreshed from Google Patents.
Patent US4311527A successfully refreshed from Google Patents.
US4311527A
Expired / Lapsed
US
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Isoindoline colorants
Assignee: BASF SE
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Filing: 1980-03-04
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Granted: 1982-01-19
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Expires: 2000-03-04
Abstract
Abstract Plastics, finishes and printing inks which contain, as the colorant, one or more compounds of the formula ##STR1## where A is hydrogen or phenyl and B is hydrogen, C 1 -C 4 -alkyl, phenyl or carbo-C 1 -C 4 -alkoxy, the phenyl radicals and the ring C being unsubstituted or substituted by groups which do not confer solubility, and the four groups A and B may be identical or different from one another. The colorants have a high tinctorial strength and the colorations have good fastness characteristics and high infrared reflectance.
Inventors
- 👤 Wolfgang Lotsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:56
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
In a colored polymer or coating composition, the improvement which comprises using a coloring amount of a colorant therefor which is a compound of the formula I: ##STR29## where A is hydrogen or phenyl, and B is hydrogen, C 1 -C 4 alkyl, phenyl or carbo-C 1 -C 4 -alkoxy, the phenyl radicals and the ring C being unsubstituted or substituted by groups which do not confer solubility, and the four groups A and B may be identical or different from one another; wherein said compound is prepared by condensing one mole of a diiminoisoindoline of the formula II: ##STR30## with two same or different moles of a pyrazolone of the formula III: ##STR31##
Claim 2
Dependent Claim
114 words
In a colored polymer or coating composition, the improvement which comprises using a coloring amount of a colorant therefor which is a compound of the formula I: ##STR29## where A is hydrogen or phenyl, and B is hydrogen, C 1 -C 4 alkyl, phenyl or carbo-C 1 -C 4 -alkoxy, the phenyl radicals and the ring C being unsubstituted or substituted by groups which do not confer solubility, and the four groups A and B may be identical or different from one another; wherein said compound is prepared by condensing one mole of a diiminoisoindoline of the formula II: ##STR30## with two same or different moles of a pyrazolone of the formula III: ##STR31##
Claim 3
Dependent Claim
42 words
In the colored polymer or coating composition of claim 1, wherein the ring C and the phenyl radicals A and B are unsubstituted or are substituted, independently of one another, by chlorine, bromine, carbamyl, sulfamyl, C 2 -C 4 alkanoylamino or benzoylamino.
Claim 4
Dependent Claim
46 words
In the colored polymer or coating composition of claim 1, wherein the ring C does not carry further substituents and the phenyl radicals in A and B are unsubstituted or are substituted, independent of one another, by bromine, carbamyl, sulfamyl, or C 2 -C 4 alkanoylamino.
Claim 5
Dependent Claim
17 words
In the colored polymer or coating composition of claims 1, 2 or 3, wherewin B is methyl.
Claim 6
Dependent Claim
18 words
In the colored polymer of coating composition of claim 4, wherein A is 3-chlorophenyl, 4-chlorophenyl, phenyl or hydrogen.
Claim 7
Dependent Claim
27 words
In the colored polymer or coating composition of claim 1, wherein said reaction between said diiminoisoindoline II and said pyrazolone III is carried out in one stage.
Claim 8
Dependent Claim
19 words
In the colored polymer or coating composition of claim 1, wherein said two moles of pyrazolone III are different.
Claim 9
Dependent Claim
30 words
In the colored polymer or coating composition of claims 1 or 7, wherein said reaction between said dye diiminoisoindoline II and said pyrazolone III is carried out in two stages.
Claim 10
Dependent Claim
22 words
In the colored polymer or coating composition of claim 8, wherein an excess of pyrazolone III is used in the second stage.
Claim 11
Dependent Claim
26 words
In the colored polymer or coating composition of claim 1, wherein said reaction is carried out in an aliphatic monocarboxylic or dicarboxylic acid as a solvent.
Claim 12
Dependent Claim
19 words
In the colored polymer or coating composition of claim 1, wherein said reaction is carried out at 50°-150° C.
References Cited (Backward Citations)
DE1025080B
Cited
US3646033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |