GB868360A - Manufacture of quinacridone pigments - Google Patents
Manufacture of quinacridone pigmentsInfo
- Publication number
- GB868360A GB868360A GB1811358A GB1811358A GB868360A GB 868360 A GB868360 A GB 868360A GB 1811358 A GB1811358 A GB 1811358A GB 1811358 A GB1811358 A GB 1811358A GB 868360 A GB868360 A GB 868360A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bis
- terephthalic acid
- hydrolysing
- phenylamino
- trifluoromethyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B48/00—Quinacridones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
2 : 5-Bis-(phenylamino)-terephthalic acids substituted in the 31 position of the phenyl groups by methyl, trifluoromethyl or chlorine or substituted in the 41 position by chlorine are made by hydrolysing the corresponding dimethyl esters which are made by dehydrogenating the corresponding dimethyl 3 : 6-dihydro-2 : 5-bis (phenylamino) terephthalates prepared by condensing dimethyl succinylosuccinate with m-toluidine, m-trifluoromethyl-aniline or m- or pchloro-aniline respectively. 2 : 5- Bis- (21-methoxyphenylamino) terephthalic acid, 2 : 5- bis- (41-phenylaminophenyl amino)-terephthalic acid and 2 : 5-bis(pyridyl21-amino) terephthalic acid are made by hydrolysing the corresponding dimethyl esters. Specification 868,361 is referred to.ALSO:Linear quinacridones are made by heating a 2 : 5-bis(arylamino) terephthalic acid or an alkyl ester thereof with a polyphosphoric acid. Examples are given. The products are yellowish-red to bluish-red pigments and are used for colouring paints, lacquers and plastic materials. Specification 868,361 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1811358A GB868360A (en) | 1958-06-06 | 1958-06-06 | Manufacture of quinacridone pigments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1811358A GB868360A (en) | 1958-06-06 | 1958-06-06 | Manufacture of quinacridone pigments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB868360A true GB868360A (en) | 1961-05-17 |
Family
ID=10106864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1811358A Expired GB868360A (en) | 1958-06-06 | 1958-06-06 | Manufacture of quinacridone pigments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB868360A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1031615A2 (en) * | 1999-02-26 | 2000-08-30 | Ciba SC Holding AG | Aqueous process for the preparation of linear quinacridones having a reduced particle size |
| US6465652B1 (en) | 1997-03-06 | 2002-10-15 | Clariant Finance (Bvi) Limited | Quinacridone pigment |
-
1958
- 1958-06-06 GB GB1811358A patent/GB868360A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6465652B1 (en) | 1997-03-06 | 2002-10-15 | Clariant Finance (Bvi) Limited | Quinacridone pigment |
| EP1031615A2 (en) * | 1999-02-26 | 2000-08-30 | Ciba SC Holding AG | Aqueous process for the preparation of linear quinacridones having a reduced particle size |
| EP1031615A3 (en) * | 1999-02-26 | 2002-11-13 | Ciba SC Holding AG | Aqueous process for the preparation of linear quinacridones having a reduced particle size |
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